Tuesday, April 24, 2012

KRAH [250358]: Preliminary Local Storm Report

NWUS52 KRAH 250358
LSRRAH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
1157 PM EDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0720 PM TSTM WND GST FAYETTEVILLE REGIONAL A 34.99N 78.88W
04/24/2012 M51 MPH CUMBERLAND NC ASOS

44 KT WNW WIND GUST FROM A SHOWER THAT PRODUCED A TRACE
OF PRECIPITATION.


&&

EVENT NUMBER RAH1200177

$$

MWS

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KCYS [250349]: Preliminary Local Storm Report

NWUS55 KCYS 250349
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
949 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0356 PM NON-TSTM WND GST TORRINGTON 42.07N 104.18W
04/24/2012 M58 MPH GOSHEN WY ASOS


&&

$$

HAMMER

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KTFX [250339]: Preliminary Local Storm Report

NWUS55 KTFX 250339
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
939 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0602 PM TSTM WND GST 1 ENE EAST GLACIER PARK 48.45N 113.20W
04/24/2012 M58 MPH GLACIER MT DEPT OF HIGHWAYS

58 MPH THUNDERSTORM WIND GUST REPORTED AT THE TWO
MEDICINE BRIDGE MT DOT SITE.


&&

$$

COULSTON

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KUNR [250335]: Preliminary Local Storm Report

NWUS53 KUNR 250335
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
935 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0926 PM TSTM WND GST RAPID CITY AIRPORT 44.04N 103.05W
04/24/2012 M55 MPH PENNINGTON SD ASOS


&&

$$

JC

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KUNR [250328]: Preliminary Local Storm Report

NWUS53 KUNR 250328
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
927 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0920 PM TSTM WND GST 4 S DOWNTOWN RAPID CITY 44.01N 103.24W
04/24/2012 M53 MPH PENNINGTON SD NWS EMPLOYEE


&&

$$

JC

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KMSO [250322]: Preliminary Local Storm Report

NWUS55 KMSO 250322
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
922 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0910 PM HAIL 2 NW OROFINO 46.50N 116.27W
04/24/2012 E1.00 INCH CLEARWATER ID TRAINED SPOTTER

TRAINED SPOTTER REPORTED QUARTER SIZE HAIL 2 MILES NW OF
OROFINO


&&

$$

LBR

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KMSO [250312]: Preliminary Local Storm Report

NWUS55 KMSO 250312
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
912 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0910 PM HAIL 5 NE OROFINO 46.54N 116.18W
04/24/2012 E1.25 INCH CLEARWATER ID TRAINED SPOTTER

TRAINED SPOTTER REPORTED HALF DOLLAR SIZE HAIL 5 NE OF
OROFINO


&&

$$

LBR

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KUNR [250308]: Preliminary Local Storm Report

NWUS53 KUNR 250308
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
908 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0858 PM TSTM WND GST 3 NW SAINT ONGE 44.58N 103.76W
04/24/2012 M56 MPH LAWRENCE SD TRAINED SPOTTER


&&

$$

JC

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KMSO [250308]: Preliminary Local Storm Report

NWUS55 KMSO 250308
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
908 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0900 PM HAIL OROFINO 46.48N 116.25W
04/24/2012 E1.75 INCH CLEARWATER ID TRAINED SPOTTER

TRAINED SPOTTER REPORTED GOLF BALL SIZE HAIL IN OROFINO

0905 PM HAIL 3 NE OROFINO 46.51N 116.22W
04/24/2012 E1.00 INCH CLEARWATER ID TRAINED SPOTTER

TRAINED SPOTTER REPORTED 1 INCH HAIL 3 MILES NE OF
OROFINO


&&

$$

LBR

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KLUB [250228]: Preliminary Local Storm Report

NWUS54 KLUB 250228
LSRLUB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LUBBOCK TX
928 PM CDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0920 PM NON-TSTM WND GST 1 NE AMHERST 34.02N 102.40W
04/24/2012 M64 MPH LAMB TX MESONET

WEST TEXAS MESONET REPORT


&&

EVENT NUMBER LUB1200169

$$

JWJ

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KLKN [250214]: Preliminary Local Storm Report

NWUS55 KLKN 250214
LSRLKN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ELKO NV
714 PM PDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0211 PM TSTM WND GST 4 SSW MANHATTAN 38.47N 117.09W
04/24/2012 M59.00 MPH NYE NV MESONET

7984 FEET AMSL... QUIMA PEAK RAWS


&&

$$

RCM

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KLBF [250208]: Preliminary Local Storm Report

NWUS53 KLBF 250208
LSRLBF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
908 PM CDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0728 PM TSTM WND GST 4 E ROSCOE 41.13N 101.52W
04/24/2012 E80 MPH KEITH NE EMERGENCY MNGR

*** 1 INJ *** CAR BLOWN OFF INTERSTATE 80 AT MILE MARKER
137 DUE TO STRAIGHT LINE WINDS.


&&

$$

JAHSENMA

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KLBF [250207]: Preliminary Local Storm Report

NWUS53 KLBF 250207
LSRLBF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
906 PM CDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0725 PM TSTM WND GST ROSCOE 41.13N 101.60W
04/24/2012 E80 MPH KEITH NE EMERGENCY MNGR

TWO POWER POLES WERE BENT OVER AT A 45 DEGREE ANGLES DUE
TO STRAIGHT LINE WINDS.


&&

$$

JAHSENMA

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KLBF [250205]: Preliminary Local Storm Report

NWUS53 KLBF 250205
LSRLBF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
905 PM CDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0725 PM TSTM WND GST ROSCOE 41.13N 101.60W
04/24/2012 E80.00 MPH KEITH NE EMERGENCY MNGR

TWO CAR GARAGE COMPLETELY DEMOLISHED AND A 12 INCH
DIAMETER PINE TREE IN THE YARD SNAPPED IN HALF 8 FEET
ABOVE THE GROUND.


&&

$$

JAHSENMA

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KLBF [250200]: Preliminary Local Storm Report...corrected

NWUS53 KLBF 250200
LSRLBF

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE NORTH PLATTE NE
900 PM CDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0725 PM TSTM WND GST 2 S ROSCOE 41.11N 101.60W
04/24/2012 E80.00 MPH KEITH NE EMERGENCY MNGR

*** 1 INJ *** SEMI-TRAILER BLOWN OFF INTERSTATE 80 MILE
MARKER 134. WIND SPEED IS ESTIMATED.


&&

$$

JAHSENMA

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KLUB [250153]: Preliminary Local Storm Report

NWUS54 KLUB 250153
LSRLUB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LUBBOCK TX
853 PM CDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0845 PM TSTM WND GST 1 NE AMHERST 34.02N 102.40W
04/24/2012 M59 MPH LAMB TX MESONET

WEST TEXAS MESONET REPORT


&&

EVENT NUMBER LUB1200168

$$

JWJ

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KUNR [250136]: Preliminary Local Storm Report

NWUS53 KUNR 250136
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
735 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0728 PM TSTM WND GST 8 NW ROCKYPOINT 44.99N 105.20W
04/24/2012 M51 MPH CAMPBELL WY MESONET


&&

$$

JC

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KGLD [250135]: Preliminary Local Storm Report

NWUS53 KGLD 250135
LSRGLD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
735 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0731 PM TSTM WND GST 6 SE GOVE 38.90N 100.40W
04/24/2012 M62 MPH GOVE KS MESONET


&&

$$

FOLTZ

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KLUB [250120]: Preliminary Local Storm Report

NWUS54 KLUB 250120
LSRLUB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LUBBOCK TX
820 PM CDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0818 PM TSTM WND GST 2 SSW MULESHOE 34.20N 102.74W
04/24/2012 M60 MPH BAILEY TX MESONET

WEST TEXAS MESONET REPORT


&&

EVENT NUMBER LUB1200167

$$

JWJ

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KGLD [250052]: Preliminary Local Storm Report

NWUS53 KGLD 250052
LSRGLD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
652 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0648 PM TSTM WND GST GRINNELL 39.12N 100.63W
04/24/2012 M61 MPH GOVE KS MESONET


&&

$$

FOLTZ

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KGLD [250052]: Preliminary Local Storm Report

NWUS53 KGLD 250052
LSRGLD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
652 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0644 PM TSTM WND GST 2 ESE OAKLEY 39.12N 100.82W
04/24/2012 M58 MPH LOGAN KS AWOS


&&

$$

FOLTZ

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KGLD [250046]: Preliminary Local Storm Report

NWUS53 KGLD 250046
LSRGLD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
645 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0644 PM TSTM WND GST 3 N COLBY 39.43N 101.05W
04/24/2012 M60 MPH THOMAS KS AWOS


&&

$$

FOLTZ

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KLBF [250030]: Preliminary Local Storm Report

NWUS53 KLBF 250030
LSRLBF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
730 PM CDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0725 PM TSTM WND GST 2 S ROSCOE 41.11N 101.60W
04/24/2012 E80 MPH KEITH NE LAW ENFORCEMENT

SEMI-TRAILER BLOWN OVER AT CONSTRUCTION SITE ALONG WITH
BARRICADES. WIND SPEED IS ESTIMATED.


&&

$$

JAHSENMA

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KMSO [250005]: Preliminary Local Storm Report

NWUS55 KMSO 250005
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
605 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0600 PM HAIL 2 N PIERCE 46.52N 115.80W
04/24/2012 E1.25 INCH CLEARWATER ID TRAINED SPOTTER

TRAINED WEATHER SPOTTER REPORTED 1 1/4 INCH HAIL ALONG
WITH SOME WIND DAMAGE


&&

$$

LBR

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KPDT [250005]: Preliminary Local Storm Report

NWUS56 KPDT 250005
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
505 PM PDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0459 PM HAIL PRINEVILLE 44.31N 120.84W
04/23/2012 E0.25 INCH CROOK OR PUBLIC

2 INCHES RAIN IN 45 MINUTES WITH 1/2 INCH HAIL. MINOR
STREET FLOODING.

0459 PM HEAVY RAIN 6 SE MAYVILLE 45.03N 120.08W
04/23/2012 E0.90 INCH WHEELER OR TRAINED SPOTTER

SMALL HAIL AND 0.9 INCH RAIN IN 10 MINUTES


&&

$$

DC

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KOTX [242350]: Preliminary Local Storm Report

NWUS56 KOTX 242350
LSROTX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
450 PM PDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0335 PM HAIL 2 N WINCHESTER 46.27N 116.62W
04/24/2012 E0.50 INCH LEWIS ID PUBLIC


&&

$$

RMILLER

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KOTX [242308]: Preliminary Local Storm Report

NWUS56 KOTX 242308
LSROTX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
408 PM PDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0339 PM HAIL CLARK FORK 48.15N 116.18W
04/24/2012 E0.75 INCH BONNER ID PUBLIC

0340 PM HAIL 2 SSE CLARK FORK 48.13N 116.16W
04/24/2012 E0.75 INCH BONNER ID PUBLIC

0343 PM HAIL 3 SE CLARK FORK 48.11N 116.14W
04/24/2012 E1.00 INCH BONNER ID PUBLIC

0343 PM HAIL 4 SE CLARK FORK 48.11N 116.13W
04/24/2012 M1.00 INCH BONNER ID PUBLIC


&&

$$

RMILLER

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KPIH [242256]: Preliminary Local Storm Report

NWUS55 KPIH 242256
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
456 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0423 PM TSTM WND GST 16 S KILGORE 44.17N 111.88W
04/24/2012 E57 MPH FREMONT ID MESONET

GAS CAVES - ELE 5775 FT


&&

$$

PANGEL

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MESO: Mesoscale Discussion 0584

ACUS11 KWNS 242244
SWOMCD
SPC MCD 242244
SDZ000-NDZ000-242345-

MESOSCALE DISCUSSION 0584
NWS STORM PREDICTION CENTER NORMAN OK
0544 PM CDT TUE APR 24 2012

AREAS AFFECTED...W-CNTRL AND S-CNTRL ND / N-CNTRL SD

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 242244Z - 242345Z

AN ISOLD STRONG-SEVERE WIND GUST THREAT MAY MATERIALIZE WITH THE
STRONGEST UPDRAFTS OVER THE NEXT FEW HOURS BEFORE DIURNAL BOUNDARY
LAYER STABILIZATION LESSENS THIS RISK WITH TIME /AFTER 02Z/. THE
SEVERE RISK AND ANTICIPATED COVERAGE OF STORMS WILL PRECLUDE THE
NEED FOR A SEVERE WATCH.

RECENT SURFACE MESOANALYSIS PLACES A 997MB SURFACE LOW OVER W-CNTRL
ND WITHIN A UNSEASONABLY WARM AIRMASS WITH TEMPS IN THE MID 80S TO
90 DEG F. WATER VAPOR IMAGERY SHOWS A SHORTWAVE TROUGH CRESTING THE
HIGH PLAINS UPPER RIDGE AND MOVING ACROSS ERN MT AND INTO WRN ND
OVER THE NEXT FEW HOURS. THE COMBINATION OF LOW LEVEL CONVERGENCE
INVOF THE LEE SURFACE TROUGH/LOW...WEAK LARGE SCALE ASCENT
ASSOCIATED WITH THE APPROACHING UPPER IMPULSE...AND THE REMOVAL OF
CINH THROUGH STRONG DIABATIC HEATING---HAS LED TO A FLARE-UP IN
WIDELY SCTD STORMS AND THIS WILL LIKELY SUPPORT CONTINUED FURTHER
ISOLD STORM DEVELOPMENT ACROSS THE AREA THROUGH THE EARLY EVENING
HOURS. RUC FORECAST SOUNDINGS SHOW NEAR DRY ADIABATIC LAPSE RATES
IN THE LOWEST FEW KM...WITH LOW LEVEL SWLYS VEERING TO NEAR 50 KTS
AT 6 KM AGL PER KBIS VAD. THE THERMODYNAMIC PROFILES SUPPORT AMPLE
STORM-SCALE EVAPORATIVE COOLING AND HIGHER MOMENTUM TRANSPORT --
PERHAPS RESULTING IN A FEW STRONG OR AN ISOLD SEVERE WIND GUST.

..SMITH.. 04/24/2012

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...ABR...BIS...UNR...

LAT...LON 45090129 46400289 47190293 47470234 46860004 46179923
45519932 45000015 45090129

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KBOI [242243]: Preliminary Local Storm Report

NWUS55 KBOI 242243
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
443 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0330 PM HAIL 6 N CALDWELL 43.75N 116.68W
04/24/2012 E1.00 INCH CANYON ID NWS EMPLOYEE

NWS EMPLOYEE REPORTED HAIL OF 1 INCH IN DIAMETER AND HAIL
DAMAGE TO PERSONAL VEHICLE.


&&

$$

THIMMESCH

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KBOI [242220]: Preliminary Local Storm Report

NWUS55 KBOI 242220
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
420 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0419 PM HAIL S NAMPA 43.58N 116.56W
04/24/2012 M0.50 INCH CANYON ID TRAINED SPOTTER

TRAINED SPOTTER REPORTED HEAVY RAIN AND HAIL OF ONE-HALF
INCH IN DIAMETER.


&&

$$

THIMMESCH

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KOTX [242208]: Preliminary Local Storm Report

NWUS56 KOTX 242208
LSROTX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
307 PM PDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0238 PM HAIL 5 NW SPIRIT LAKE 48.02N 116.93W
04/24/2012 M0.50 INCH BONNER ID PUBLIC


&&

$$

RMILLER

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KBOI [242204]: Preliminary Local Storm Report

NWUS55 KBOI 242204
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
404 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0345 PM HAIL 10 ENE MIDDLETON 43.76N 116.44W
04/24/2012 M1.25 INCH ADA ID TRAINED SPOTTER

HALF DOLLAR SIZE HAIL AND GUSTS TO 75 MPH.


&&

$$

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KAPX [242146]: Preliminary Local Storm Report

NWUS53 KAPX 242146
LSRAPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GAYLORD MI
546 PM EDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1152 AM NON-TSTM WND GST HARRISVILLE 44.66N 83.30W
04/24/2012 M49.00 MPH ALCONA MI C-MAN STATION

MEASURED AT STURGEON POINT LIGHTHOUSE.

0235 PM NON-TSTM WND GST 1 N CADILLAC 44.26N 85.42W
04/24/2012 M45.00 MPH WEXFORD MI AWOS

MEASURED AT THE CADILLAC AIRPORT.

0335 PM NON-TSTM WND GST KINROSS 46.27N 84.48W
04/24/2012 M47.00 MPH CHIPPEWA MI AWOS

0400 PM NON-TSTM WND GST 4 SE PRESQUE ISLE 45.26N 83.41W
04/24/2012 M49.00 MPH PRESQUE ISLE MI MESONET

MEASURED AT LAFARGE PRESQUE ISLE DOCK.

0420 PM NON-TSTM WND GST 3 E AU GRES 44.04N 83.63W
04/24/2012 M48.00 MPH LMZ777 MI C-MAN STATION

MEASURED AT GRAVELLY SHOALS LIGHT.


&&

$$

SCHWARTZ

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KBOI [242143]: Preliminary Local Storm Report

NWUS55 KBOI 242143
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
343 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0330 PM HAIL 6 N CALDWELL 43.75N 116.68W
04/24/2012 E1.00 INCH CANYON ID NWS EMPLOYEE


&&

$$

BBURGESS

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KPDT [242131]: Preliminary Local Storm Report...summary

NWUS56 KPDT 242131
LSRPDT

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE PENDLETON OR
231 PM PDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0544 PM HAIL 8 NW TERREBONNE 44.43N 121.28W
04/23/2012 E0.75 INCH JEFFERSON OR TRAINED SPOTTER

0544 PM HAIL 9 NW TERREBONNE 44.44N 121.29W
04/23/2012 E0.50 INCH JEFFERSON OR TRAINED SPOTTER

0626 PM HAIL 3 NW ASHWOOD 44.77N 120.80W
04/23/2012 E0.75 INCH JEFFERSON OR TRAINED SPOTTER

0700 PM HAIL CLARNO 44.91N 120.47W
04/23/2012 M1.00 INCH WASCO OR PUBLIC

PUBLIC REPORTED HAIL UP TO 1 INCH IN DIAMETER AND WINDS
OF 40 TO 50 MPH.

0840 PM HEAVY RAIN SSE HEPPNER 45.35N 119.55W
04/23/2012 M0.75 INCH MORROW OR TRAINED SPOTTER

OVER A 35 MINUTE PERIOD BETWEEN 805 AND 840 PM.

0855 PM HEAVY RAIN NNW HEPPNER 45.36N 119.55W
04/23/2012 M1.23 INCH MORROW OR TRAINED SPOTTER

OVER A 1 HOUR PERIOD.

0901 PM TSTM WND GST HERMISTON 45.83N 119.28W
04/23/2012 M60.00 MPH UMATILLA OR ASOS

HERMISTON AIRPORT ASOS REPORTED A WIND GUST OF 60 MPH AT
901 PM AND 0.86 INCHES OF RAIN IN 50 MINUTES.

0904 PM TSTM WND GST ECHO 45.74N 119.19W
04/23/2012 E58.00 MPH UMATILLA OR PUBLIC

MADISON FARMS WEATHER INSTRUMENT RECORDED 58 MPH WIND
GUST.

0905 PM TSTM WND DMG 1 NW HERMISTON 45.84N 119.30W
04/23/2012 UMATILLA OR PUBLIC

ROCKY HEIGHTS ELEMENTARY SCHOOL HAD ROOFING MATERIAL,
METAL FLASHING AND INSULATION PEELED BACK ON THE ROOF ON
THE SOUTH SIDE OF THE GYMNASIUM BY THUNDERSTORM WINDS.
HEAVY RAIN CAUSED INTERIOR WATER DAMAGE.

0911 PM TSTM WND GST UMATILLA 45.91N 119.33W
04/23/2012 E58.00 MPH UMATILLA OR PUBLIC

UMATILLA SOUTH HILL. WEATHER INSTRUMENT RECORDED 58 MPH
WIND GUST.

0942 PM TSTM WND GST PASCO 46.25N 119.13W
04/23/2012 E62.00 MPH FRANKLIN WA ASOS

1000 PM TSTM WND GST 10 N PASCO 46.40N 119.13W
04/23/2012 E59.00 MPH FRANKLIN WA AMATEUR RADIO


&&

$$

GP

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KPDT [242130]: Preliminary Local Storm Report

NWUS56 KPDT 242130
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
230 PM PDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0700 PM HAIL CLARNO 44.91N 120.47W
04/23/2012 M1.00 INCH WASCO OR PUBLIC

PUBLIC REPORTED HAIL UP TO 1 INCH IN DIAMETER AND WINDS
OF 40 TO 50 MPH.

0905 PM TSTM WND DMG 1 NW HERMISTON 45.84N 119.30W
04/23/2012 UMATILLA OR PUBLIC

ROCKY HEIGHTS ELEMENTARY SCHOOL HAD ROOFING MATERIAL,
METAL FLASHING AND INSULATION PEELED BACK ON THE ROOF ON
THE SOUTH SIDE OF THE GYMNASIUM BY THUNDERSTORM WINDS.
HEAVY RAIN CAUSED INTERIOR WATER DAMAGE.


&&

$$

GP

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KCYS [242022]: Preliminary Local Storm Report

NWUS55 KCYS 242022
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
222 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0130 PM TSTM WND GST BORDEAUX 41.95N 104.95W
04/24/2012 M65 MPH PLATTE WY DEPT OF HIGHWAYS


&&

$$

MWEILAND

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KCYS [241959]: Preliminary Local Storm Report

NWUS55 KCYS 241959
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
159 PM MDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0140 PM NON-TSTM WND GST 9 S WHEATLAND 41.92N 104.96W
04/24/2012 M56 MPH PLATTE WY DEPT OF HIGHWAYS

BORDEAUX WYDOT SITE.


&&

$$

HAMMER

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 241929
SWODY1
SPC AC 241928

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0228 PM CDT TUE APR 24 2012

VALID 242000Z - 251200Z

...NO SVR TSTM AREAS FORECAST...

EARLIER THOUGHTS REGARDING THE EVOLUTION OF CONVECTION ACROSS THE
NRN ROCKIES INTO THE NRN HIGH PLAINS REMAIN. GREATEST POCKET OF
INSTABILITY...ON THE ORDER OF 1000 J/KG MLCAPE...CURRENTLY RESIDES
ACROSS ERN WA INTO NRN ID AND ISOLATED THUNDERSTORMS ARE BEGINNING
TO DEVELOP OVER THE HIGHER TERRAIN OF SHOSHONE/CLEARWATER/IDAHO
COUNTIES. SUBSTANTIAL SHEAR IS IN PLACE FOR THIS ACTIVITY TO SPREAD
DOWNSTREAM INTO MT WHERE VERY STEEP LAPSE RATES RESIDE.

FARTHER SOUTH...HAVE INCREASED THUNDERSTORM PROBABILITIES ACROSS
MUCH OF THE SRN ROCKIES TO ACCOUNT FOR VERY HIGH BASED CONVECTION
THAT IS DEVELOPING ACROSS THIS REGION. LATEST LIGHTING DATA SUGGEST
THESE UPDRAFTS ARE ATTAINING LEVELS SUFFICIENT FOR DISCHARGE AND
ISOLATED TSTMS WILL BE NOTED INTO THE EARLY EVENING HOURS.

..DARROW.. 04/24/2012

.PREV DISCUSSION... /ISSUED 1129 AM CDT TUE APR 24 2012/

...SYNOPSIS...
THE DEEP OCCLUDED LOW N OF LAKE ONTARIO WILL CONTINUE TO MOVE NWD
TOWARD JAMES BAY...WHILE A DEEP TROUGH WILL PERSIST OVER THE
ATLANTIC COAST. FARTHER W...THE PERSISTENT RIDGE OVER THE
INTERMOUNTAIN WEST IS BEGINNING TO BREAK DOWN AND SHIFT EWD TOWARD
THE HIGH PLAINS...AS ONE UPSTREAM SHORTWAVE APPROACHES SRN CA AND
ANOTHER TROUGH DIGS SEWD FROM THE GULF OF ALASKA TOWARD THE PAC NW
COAST. STEEP LAPSE RATES CONTINUE ACROSS THE INTERMOUNTAIN WEST AS
A RESULT OF STRONG SURFACE HEATING/MIXING THE PAST SEVERAL
DAYS...AND AN ELEVATED MIXED LAYER IS NOW OVERSPREADING THE PLAINS.

...NRN ROCKIES TO NRN HIGH PLAINS THIS AFTERNOON/EVENING...
12Z SOUNDINGS FROM BOI AND OTX SHOWED PW VALUES NEAR 0.80 INCH AND
THE POTENTIAL FOR MLCAPE NEAR 500 J/KG WITH DAYTIME HEATING OVER THE
HIGHER TERRAIN. ADDITIONALLY...A SERIES OF SUBTLE EMBEDDED SPEED
MAXIMA WILL EJECT NWD AND EWD AROUND THE NWRN PERIPHERY OF THE
RIDGE...CONTRIBUTING TO A FAVORABLE ENVIRONMENT FOR THUNDERSTORM
DEVELOPMENT THIS AFTERNOON ACROSS THE NRN ROCKIES. DEEP-LAYER
UNIDIRECTIONAL PROFILES WITH SOME SPEED SHEAR WILL SUPPORT MULTICELL
CLUSTERS...WHILE THE STEEP LAPSE RATES AND MODEST BUOYANCY WILL
SUPPORT A RISK FOR ISOLATED STRONG/DAMAGING WINDS AND SMALL HAIL
THIS AFTERNOON/EVENING.

SOME OF THE CONVECTION OVER THE MOUNTAINS COULD PROGRESS EWD/ENEWD
INTO THE STEEP LAPSE RATE ENVIRONMENT ACROSS MT WITH AN ATTENDANT
RISK FOR ISOLATED STRONG GUSTS WITH THE HIGH-BASED STORMS. FARTHER
E INTO WRN ND...SURFACE HEATING/MIXING COULD SUFFICIENTLY REDUCE
CONVECTIVE INHIBITION TO ALLOW ISOLATED STORM DEVELOPMENT NEAR THE
LEE TROUGH/CYCLONE LATE THIS AFTERNOON. INVERTED-V PROFILES WILL
SUPPORT SOME POTENTIAL FOR ISOLATED DAMAGING GUSTS...AND PERHAPS
SOME HAIL.

...CENTRAL PLAINS TO THE LOWER OH VALLEY THROUGH TONIGHT...
MORNING SOUNDINGS AND RECENT SURFACE OBSERVATIONS SHOW LIMITED
LOW-LEVEL MOISTURE FROM N TX TO KS/MO...AND THE SHORT-TERM MODEL
FORECASTS OF NEAR 60 F BOUNDARY LAYER DEWPOINTS BY MID AFTERNOON
APPEAR OVERDONE. THIS ALSO SUGGESTS THAT THE MOISTURE FEED JUST
ABOVE THE SURFACE INTO THE MID MS/LOWER OH VALLEY WAA ZONE WILL
REMAIN MARGINAL...SUCH THAT IT IS UNLIKELY THAT BUOYANCY WILL BECOME
SUFFICIENT FOR A SEVERE STORM RISK. MEANWHILE..STRONG SURFACE
HEATING WILL OCCUR ACROSS THE PLAINS...THOUGH WARMING TEMPERATURES
ABOVE THE SURFACE WILL TEND TO LIMIT THE DEPTH OF VERTICAL MIXING
AND MAINTAIN A CAP OVER THE ERN PLAINS. FARTHER W...TEMPERATURES IN
THE 90S WILL RESULT IN SURFACE MIXED LAYER EXTENDING AS HIGH AS 500
MB...AND A FEW DRY THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON
ACROSS THE CENTRAL HIGH PLAINS.

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MESO: Mesoscale Discussion 0583

ACUS11 KWNS 241919
SWOMCD
SPC MCD 241918
IDZ000-MTZ000-ORZ000-WAZ000-242045-

MESOSCALE DISCUSSION 0583
NWS STORM PREDICTION CENTER NORMAN OK
0218 PM CDT TUE APR 24 2012

AREAS AFFECTED...NE ORE...ID...SE WA...FAR WRN MT

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 241918Z - 242045Z

AS THUNDERSTORM DEVELOPMENT INCREASES ACROSS THE NRN ROCKIES...HAIL
AND ISOLATED WIND DAMAGE MAY OCCUR WITH THE MORE INTENSE CELLS. THE
THREATS ARE EXPECTED TO REMAIN MARGINAL AND WW ISSUANCE IS NOT
ANTICIPATED.

THUNDERSTORMS ARE BEGINNING TO INITIATE ACROSS NCNTRL ID WHERE
MESOANALYSIS SHOWS MODERATE INSTABILITY IN PLACE WITH MLCAPE VALUES
ESTIMATED IN THE 1000 TO 1500 J/KG RANGE. IN ADDITION...REGIONAL
WSR-88D VWPS SHOW ABOUT 30 KT OF DEEP LAYER SHEAR. THIS COMBINED
WITH LAPSE RATES OF 8.0 TO 9.0 C/KM SHOULD BE ENOUGH FOR STRONG
UPDRAFTS CAPABLE OF PRODUCING HAIL. ALSO...SFC TEMPERATURE-DEWPOINT
SPREADS OF 30 TO 40 DEGREES MAY HELP ENHANCE DOWNDRAFT STRENGTH
ENOUGH FOR ISOLATED WIND DAMAGE OVER THE NEXT FEW HOURS.
HOWEVER...THE MCD AREA IS LOCATED JUST TO THE WEST OF THE RIDGE AXIS
WHICH SHOULD KEEP STORM ORGANIZATION ON THE MARGINAL SIDE THIS
AFTERNOON.

..BROYLES.. 04/24/2012

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...MSO...BOI...OTX...PDT...

LAT...LON 46171447 47001477 47311558 47151687 46531726 45621713
45101752 44541771 44161721 44021658 44141604 44871508
45451450 46171447

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 241728
SWODY2
SPC AC 241726

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1226 PM CDT TUE APR 24 2012

VALID 251200Z - 261200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF THE MID MS AND
OH VALLEY REGION...

...MID MS/OH VALLEY REGION...

WEAK HEIGHT RISES WILL OVERSPREAD THE MID MS/OH VALLEY REGION
WEDNESDAY PRIOR TO SHORT-WAVE TROUGH THAT WILL DIG SEWD INTO THE
GREAT LAKES LATE. EARLY IN THE PERIOD LOW LEVEL WARM ADVECTION WILL
BE FOCUSED OVER THE UPPER MS VALLEY AHEAD OF SFC LOW OVER SWRN MN
AND THIS SHOULD PROVE RESPONSIBLE FOR EARLY MORNING CONVECTION.
GIVEN THE PRESENCE OF HEIGHT RISES ACROSS THIS REGION AND THE
LIKELIHOOD THAT A STRONG CAP WILL BE PRESENT ACROSS THE MID MS
VALLEY...WARM ADVECTION SHOULD PROVE INSTRUMENTAL IN CONVECTIVE
DEVELOPMENT THROUGH THE PERIOD. LATEST MODEL GUIDANCE STRONGLY
SUPPORTS THE IDEA THAT WARM SECTOR TSTM DEVELOPMENT WILL BE
NEGLIGIBLE OR SEVERELY RETARDED DURING THE PERIOD AS WLY FLOW LIMITS
DEEPER UPDRAFTS. FOR THIS REASON IT APPEARS ASCENT NORTH-EAST OF
RETREATING WARM FRONT WILL DRIVE ELEVATED CONVECTION SEWD ALONG A
CORRIDOR FROM SRN WI INTO IL/IND DURING THE DAY. LATEST SHORT RANGE
GUIDANCE APPEARS TO BE OVERESTIMATING LOW LEVEL MOISTURE RETURN INTO
THIS REGION WITH THE 12Z NAM SUGGESTING MID 60S DEW POINTS WILL
RETURN INTO THE WARM FRONTAL ZONE. THIS IS LIKELY TOO HIGH AS TRUE
MID 60S DEW POINTS ARE LIMITED TO DEEP SOUTH TX ATTM. EVEN
SO...STEEP MID LEVEL LAPSE RATES DO SUGGEST TRANSITORY CLUSTERS OF
ELEVATED THUNDERSTORMS COULD PRODUCE HAIL AS THEY SPREAD TOWARD THE
OH VALLEY INTO THE EVENING HOURS. IT/S NOT ENTIRELY CLEAR WHETHER
BOUNDARY LAYER HEATING WILL BE SUFFICIENT FOR SFC-BASED CONVECTION
ACROSS SRN IA/NRN MO AS WEAK CONVERGENCE AND THE AFOREMENTIONED
STRONG CAP SHOULD BE NOTED.

...NRN ROCKIES...

UNTIL THE UPPER RIDGE SHIFTS DOWNSTREAM IT APPEARS RESIDUAL MOISTURE
WILL PROVE SUFFICIENT FOR THUNDERSTORM DEVELOPMENT DURING THE HEAT
OF THE DAY WEDNESDAY ACROSS THE NRN ROCKIES/INTERIOR NW. SHORT
RANGE MODELS CONTINUE TO SUGGEST STRONG BOUNDARY LAYER HEATING WILL
BE FOCUSED ACROSS ERN ORE INTO SWRN ID. SFC PARCELS SHOULD BE FREE
TO CONVECT AS TEMPERATURES RISE INTO THE UPPER 60S/LOWER 70S AT
LOWER ELEVATIONS. FORECAST SOUNDINGS SUGGEST A FEW ROBUST UPDRAFTS
ARE POSSIBLE WITHIN AN ENVIRONMENT THAT IS FAVORABLY SHEARED FOR
STORM ORGANIZATION. MARGINALLY SEVERE HAIL AND GUSTY WINDS COULD
ACCOMPANY THIS ACTIVITY INTO THE EARLY EVENING HOURS.

..DARROW.. 04/24/2012

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 241631
SWODY1
SPC AC 241629

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1129 AM CDT TUE APR 24 2012

VALID 241630Z - 251200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
THE DEEP OCCLUDED LOW N OF LAKE ONTARIO WILL CONTINUE TO MOVE NWD
TOWARD JAMES BAY...WHILE A DEEP TROUGH WILL PERSIST OVER THE
ATLANTIC COAST. FARTHER W...THE PERSISTENT RIDGE OVER THE
INTERMOUNTAIN WEST IS BEGINNING TO BREAK DOWN AND SHIFT EWD TOWARD
THE HIGH PLAINS...AS ONE UPSTREAM SHORTWAVE APPROACHES SRN CA AND
ANOTHER TROUGH DIGS SEWD FROM THE GULF OF ALASKA TOWARD THE PAC NW
COAST. STEEP LAPSE RATES CONTINUE ACROSS THE INTERMOUNTAIN WEST AS
A RESULT OF STRONG SURFACE HEATING/MIXING THE PAST SEVERAL
DAYS...AND AN ELEVATED MIXED LAYER IS NOW OVERSPREADING THE PLAINS.

...NRN ROCKIES TO NRN HIGH PLAINS THIS AFTERNOON/EVENING...
12Z SOUNDINGS FROM BOI AND OTX SHOWED PW VALUES NEAR 0.80 INCH AND
THE POTENTIAL FOR MLCAPE NEAR 500 J/KG WITH DAYTIME HEATING OVER THE
HIGHER TERRAIN. ADDITIONALLY...A SERIES OF SUBTLE EMBEDDED SPEED
MAXIMA WILL EJECT NWD AND EWD AROUND THE NWRN PERIPHERY OF THE
RIDGE...CONTRIBUTING TO A FAVORABLE ENVIRONMENT FOR THUNDERSTORM
DEVELOPMENT THIS AFTERNOON ACROSS THE NRN ROCKIES. DEEP-LAYER
UNIDIRECTIONAL PROFILES WITH SOME SPEED SHEAR WILL SUPPORT MULTICELL
CLUSTERS...WHILE THE STEEP LAPSE RATES AND MODEST BUOYANCY WILL
SUPPORT A RISK FOR ISOLATED STRONG/DAMAGING WINDS AND SMALL HAIL
THIS AFTERNOON/EVENING.

SOME OF THE CONVECTION OVER THE MOUNTAINS COULD PROGRESS EWD/ENEWD
INTO THE STEEP LAPSE RATE ENVIRONMENT ACROSS MT WITH AN ATTENDANT
RISK FOR ISOLATED STRONG GUSTS WITH THE HIGH-BASED STORMS. FARTHER
E INTO WRN ND...SURFACE HEATING/MIXING COULD SUFFICIENTLY REDUCE
CONVECTIVE INHIBITION TO ALLOW ISOLATED STORM DEVELOPMENT NEAR THE
LEE TROUGH/CYCLONE LATE THIS AFTERNOON. INVERTED-V PROFILES WILL
SUPPORT SOME POTENTIAL FOR ISOLATED DAMAGING GUSTS...AND PERHAPS
SOME HAIL.

...CENTRAL PLAINS TO THE LOWER OH VALLEY THROUGH TONIGHT...
MORNING SOUNDINGS AND RECENT SURFACE OBSERVATIONS SHOW LIMITED
LOW-LEVEL MOISTURE FROM N TX TO KS/MO...AND THE SHORT-TERM MODEL
FORECASTS OF NEAR 60 F BOUNDARY LAYER DEWPOINTS BY MID AFTERNOON
APPEAR OVERDONE. THIS ALSO SUGGESTS THAT THE MOISTURE FEED JUST
ABOVE THE SURFACE INTO THE MID MS/LOWER OH VALLEY WAA ZONE WILL
REMAIN MARGINAL...SUCH THAT IT IS UNLIKELY THAT BUOYANCY WILL BECOME
SUFFICIENT FOR A SEVERE STORM RISK. MEANWHILE..STRONG SURFACE
HEATING WILL OCCUR ACROSS THE PLAINS...THOUGH WARMING TEMPERATURES
ABOVE THE SURFACE WILL TEND TO LIMIT THE DEPTH OF VERTICAL MIXING
AND MAINTAIN A CAP OVER THE ERN PLAINS. FARTHER W...TEMPERATURES IN
THE 90S WILL RESULT IN SURFACE MIXED LAYER EXTENDING AS HIGH AS 500
MB...AND A FEW DRY THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON
ACROSS THE CENTRAL HIGH PLAINS.

..THOMPSON/ROGERS.. 04/24/2012

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KOTX [241554]: Preliminary Local Storm Report

NWUS56 KOTX 241554
LSROTX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
853 AM PDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0827 AM FLOOD CALDER 47.27N 116.19W
04/24/2012 SHOSHONE ID EMERGENCY MNGR

ELK PRAIRIE RD, AKA CALDER RD,IS CLOSED DUE TO ST JOE
RIVER FLOODING. RESIDENTS OF CALDER HAVE TO DETOUR 11
MILES TO GET ONTO THE MAIN ST JOE RIVER RD.

0827 AM FLOOD 5 NE CATALDO 47.59N 116.25W
04/24/2012 SHOSHONE ID EMERGENCY MNGR

THE OLD COEUR D ALENE RIVER RD,ON THE NORTH SIDE OF THE
NF COEUR D ALENE RIVER, IS CLOSED TO TRAFFIC FROM THE
BUMBLE BEE BRIDGE ON UPSTREAM, DUE TO RIVER FLOODING ON
THE NORTH FORK COEUR D ALENE RIVER.

0827 AM FLOOD 2 E CATALDO 47.54N 116.28W
04/24/2012 SHOSHONE ID EMERGENCY MNGR

RIVERVIEW DRIVE IS CLOSED BETWEEN CATALDO AND KINGSTON
DUE TO FLOODING ON THE COEUR D ALENE RIVER.


&&

$$

KROWDEN

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KAPX [241539]: Preliminary Local Storm Report

NWUS53 KAPX 241539
LSRAPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GAYLORD MI
1139 AM EDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1001 AM NON-TSTM WND GST 6 W ALPENA 45.07N 83.56W
04/24/2012 M49.00 MPH ALPENA MI ASOS

1015 AM NON-TSTM WND GST 7 NE HOUGHTON LAKE 44.37N 84.66W
04/24/2012 M47.00 MPH ROSCOMMON MI ASOS

1047 AM NON-TSTM WND GST WEST BRANCH 44.28N 84.24W
04/24/2012 M49.00 MPH OGEMAW MI DEPT OF HIGHWAYS

1054 AM NON-TSTM WND GST 4 N HARRISVILLE 44.71N 83.30W
04/24/2012 M45.00 MPH ALCONA MI C-MAN STATION

STURGEON POINT LIGHTHOUSE

1054 AM NON-TSTM WND GST 1 ENE THOMPSONS HARBOR 45.35N 83.54W
04/24/2012 M47.00 MPH PRESQUE ISLE MI C-MAN STATION

PRESQUE ISLE LIGHTHOUSE.


&&

$$

HALBLAUB

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KSGX [241502]: Preliminary Local Storm Report

NWUS56 KSGX 241502
LSRSGX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
802 AM PDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1244 AM NON-TSTM WND GST 5 NE THOUSAND PALMS 33.88N 116.33W
04/24/2012 M69.00 MPH RIVERSIDE CA MESONET

SKY VALLEY MESONET RECORDED WIND GUSTS IN EXCESS OF 58
MPH SEVERAL TIMES BETWEEN 400 PM PDT ON 4/23 AND 100 AM
PDT ON 4/24. A PEAK WIND GUST OF 69 MPH WAS RECORDED AT
1244 AM ON 4/24.

1250 AM NON-TSTM WND GST 10 NW PALM SPRINGS 33.95N 116.66W
04/24/2012 M60.00 MPH RIVERSIDE CA MESONET

WHITE WATER RAWS RECORDED A WIND GUST OF 60 MPH AT 1250
AM PDT.

0150 AM NON-TSTM WND GST 3 NNE CATHEDRAL CITY 33.87N 116.43W
04/24/2012 M56.00 MPH RIVERSIDE CA MESONET

EDOM HILL MESONET RECORDED A WIND GUST OF 56 MPH AT 150
AM PDT.


&&

$$

JMOKER

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KPBZ [241354]: Preliminary Local Storm Report

NWUS51 KPBZ 241354
LSRPBZ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
954 AM EDT TUE APR 24 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0800 AM SNOW STARR 41.53N 79.36W
04/24/2012 M7.0 INCH FOREST PA PUBLIC

SNOW DEPTH.


&&

EVENT NUMBER PBZ1200400

$$



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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 241231
SWODY1
SPC AC 241229

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0729 AM CDT TUE APR 24 2012

VALID 241300Z - 251200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...

A MIDLEVEL RIDGE WILL REMAIN CENTERED ALONG THE ROCKIES THROUGH THE
D1 PERIOD WITH A GRADUAL EWD PROGRESSION OF DOWNSTREAM TROUGH OVER
THE ERN U.S./NWRN ATLANTIC. SEVERAL WEAKER IMPULSES ARE PRESENT
WITHIN THIS BROADER-SCALE FLOW REGIME...ONE OF WHICH CRESTING RIDGE
AXIS OVER THE NRN ROCKIES WILL TRANSLATE SEWD INTO THE UPPER MS
VALLEY BY 25/12Z. IN THE LOW LEVELS...WARM FRONT ANALYZED FROM A
SURFACE LOW OVER SRN ALBERTA SEWD THROUGH A SECONDARY LOW OVER CNTRL
SD TO ERN NEB WILL INTENSIFY WHILE SHIFTING EWD/SEWD INTO THE
UPPER/MID MS VALLEY.

...ERN PARTS OF WA/ORE INTO NRN HIGH PLAINS...

IN THE WAKE OF LEAD IMPULSE MENTIONED IN SYNOPSIS...THE APPROACH OF
AN UPSTREAM VORTICITY MAXIMUM OVER THE GREAT BASIN WILL AUGMENT
STRONG DAYTIME HEATING ALONG THE HIGH TERRAIN TO FOSTER
ISOLATED-WIDELY SCATTERED TSTM DEVELOPMENT THIS AFTERNOON INTO
TONIGHT. THE PRESENCE OF STEEP LOW TO MIDLEVEL LAPSE RATES...PW
VALUES OF 0.5-0.8 INCH...AND 40-45 KT OF DEEP-LAYER SHEAR WILL
RESULT IN AN ENVIRONMENT FAVORABLE FOR A FEW SUSTAINED/ROTATING
STORMS CAPABLE OF LOCALLY DAMAGING WIND GUSTS AND MARGINALLY SEVERE
HAIL.

...DAKOTAS INTO UPPER MS VALLEY...

CAPPING ASSOCIATED WITH AN EML WILL INTENSIFY TODAY AS MIDLEVEL FLOW
BECOMES INCREASINGLY ZONAL ACROSS CREST OF RIDGE OVER THE NRN HIGH
PLAINS. AT THE SAME TIME...STRONG HEATING OF BOUNDARY LAYER W OF
WARM FRONT AND LEE TROUGH COUPLED WITH THE APPROACH OF MIDLEVEL
IMPULSE MENTIONED ABOVE MAY LOCALLY WEAKEN CAP SUCH THAT ISOLATED
STORM DEVELOPMENT IS POSSIBLE BY LATE AFTERNOON OR EVENING OVER THE
CNTRL DAKOTAS. OTHER STORMS FORMING UPSTREAM OVER THE HIGH PLAINS
OF MT/NRN WY WILL LIKELY MOVE INTO THE REGION THIS EVENING.
FORECAST SOUNDINGS EXHIBIT STEEP LAPSE RATES AND A DEEPLY MIXED
BOUNDARY LAYER WHICH WILL SUPPORT VIGOROUS UP/DOWNDRAFTS WITH A RISK
FOR HAIL AND DAMAGING OUTFLOW WINDS.

SOME POTENTIAL FOR MAINLY SUB-SEVERE HAIL MAY DEVELOP EWD INTO THE
UPPER MS VALLEY OVERNIGHT IN CONJUNCTION WITH ELEVATED TSTMS FORMING
AHEAD OF VORTICITY MAXIMUM APPROACHING FROM THE DAKOTAS.

...MID MO/LOWER OH/TN VALLEYS...

HERE TOO...CAPPING WILL STRENGTHEN DUE TO RISING MIDLEVEL HEIGHTS
AND THE ADVECTION OF NRN ROCKIES EML WITHIN PREVAILING NWLY FLOW
REGIME. SWLY LOW-LEVEL FLOW ON BACKSIDE OF SURFACE ANTICYCLONE
CENTERED OVER THE N-CNTRL GOM WILL ALLOW FOR BOUNDARY LAYER MOISTURE
TO INCREASE WITH DEWPOINTS RISING THROUGH THE 50S TO THE W OF WARM
FRONT. THIS MOISTURE WILL COMBINE WITH STRONG DAYTIME HEATING AND
THE EML TO YIELD AFTERNOON MLCAPE VALUES POSSIBLY APPROACHING
1000-1500 J/KG ACROSS PARTS OF MO AND ERN KS. HOWEVER...THE
STRENGTHENING CAP IS EXPECTED TO INHIBIT SURFACE-BASED TSTM
DEVELOPMENT WITHIN WARM SECTOR THROUGH THE PERIOD.

THE POTENTIAL FOR ELEVATED TSTMS CAPABLE OF MARGINALLY SEVERE HAIL
WILL INCREASE THIS EVENING AND TONIGHT AS WAA/ISENTROPIC ASCENT IS
ENHANCED ALONG/E OF WARM FRONT BY STRENGTHENING WLY LLJ.

..MEAD/LEITMAN.. 04/24/2012

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 240901
SWOD48
SPC AC 240900

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0400 AM CDT TUE APR 24 2012

VALID 271200Z - 021200Z

...DISCUSSION...
00Z ECMWF/GEFS/UKMET ARE IN GOOD GENERAL AGREEMENT WITH DEPICTIONS
OF A RELATIVELY AMPLIFIED/SOMEWHAT STAGNANT LARGE SCALE PATTERN THIS
WEEKEND INTO EARLY NEXT WEEK. THE SHORTWAVE TROUGH AS DISCUSSED IN
THE DAY 3 OUTLOOK IS EXPECTED TO GENERALLY WEAKEN/MINOR OVER THE
MIDWEST BY DAY 4/FRIDAY...WITH CYCLONIC/NEBULOUS UPPER FLOW
OTHERWISE PREVALENT FROM THE ROCKIES TO THE SOUTH-CENTRAL PLAINS
LATE THIS WEEK. NO 30 PERCENT SEVERE AREAS ARE WARRANTED AS NO
PARTICULARLY WIDESPREAD/CONSEQUENTIAL SEVERE RISKS ARE CURRENTLY
ANTICIPATED.

NONETHELESS...AT LEAST ISOLATED/POSSIBLE SEVERE RISKS WILL EXIST
INTO THE WEEKEND. FOR DAY 4/FRIDAY...SOME SEVERE TSTMS MAY BE
POSSIBLE ACROSS PORTIONS OF THE LOWER MO VALLEY/MIDDLE MS VALLEY
NEAR A SURFACE FRONT/REMNANT FRONTAL ZONE...WITH POSSIBLE SEVERE
DEVELOPMENT LESS CERTAIN IN THE PRESENCE OF GREATER CAPPING/NEBULOUS
FORCING FOR ASCENT WITH SOUTH-SOUTHWESTWARD EXTENT ACROSS OK/NORTH
TX IN VICINITY OF A DRYLINE/WEAK FRONT. OTHER STRONG/POSSIBLY SEVERE
TSTMS MIGHT BE POSSIBLE ON DAY 4/FRIDAY ACROSS THE CENTRAL HIGH
PLAINS IN THE PRESENCE OF LOW-LEVEL UPSLOPE FLOW/MODERATE VERTICAL
SHEAR. BY DAY 5/SATURDAY...SOME SEVERE TSTMS MAY BE POSSIBLE ALONG
THE SOUTHEASTWARD ADVANCING FRONT ACROSS PORTIONS OF OK/NORTH TX TO
THE ADJACENT ARKLATEX AND MID-SOUTH REGIONS.

..GUYER.. 04/24/2012

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 240732
SWODY3
SPC AC 240730

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0230 AM CDT TUE APR 24 2012

VALID 261200Z - 271200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS THE CENTRAL HIGH
PLAINS...

...CO/SOUTHEAST WY FRONT RANGE AND CENTRAL/SOUTHERN HIGH PLAINS...
00Z-BASED MODELS ARE IN RELATIVELY GOOD AGREEMENT WITH THE EXPECTED
NORTHEASTWARD-ADVANCEMENT OF A SOUTHERN STREAM SHORTWAVE TROUGH FROM
THE DESERT SOUTHWEST EARLY THURSDAY TO THE CENTRAL HIGH PLAINS BY
THURSDAY EVENING. THIS WILL LEAD TO HIGH PLAINS SURFACE
CYCLOGENESIS/MOISTENING...ALTHOUGH IT DOES SEEM LIKELY THAT
ESPECIALLY 00Z NAM/GFS REMAIN A LITTLE TOO AGGRESSIVE WITH THE
WEST-NORTHWESTWARD EXTENT OF NEAR/ABOVE 60S F SURFACE DEWPOINTS
ACROSS THE CENTRAL PLAINS.

NONETHELESS...SUFFICIENT MOISTENING IN CONJUNCTION WITH UPPER JET
EXIT REGION/AMPLE FORCING FOR ASCENT AND LOW-LEVEL UPSLOPE SHOULD
YIELD AT LEAST ISOLATED STRONG/SEVERE TSTM DEVELOPMENT DURING THE
AFTERNOON...INCLUDING SOME SUPERCELLS CAPABLE OF LARGE HAIL. THIS
SEEMS MOST PROBABLE FROM THE NORTHEAST CO/SOUTHEAST WY FRONT RANGE
VICINITY INTO THE CENTRAL HIGH PLAINS. ANTICIPATED STRENGTH OF THE
ELEVATED MIXED LAYER ALOFT PROVIDES UNCERTAINTY REGARDING THE
POTENTIAL FOR MORE ISOLATED DEVELOPMENT ACROSS THE SOUTHERN HIGH
PLAINS AREAS TO THE SOUTH OF THE WNW-ESE ORIENTED FRONTAL ZONE
ACROSS KS.

...OH/TN VALLEYS TO MID-ATLANTIC STATES/CAROLINAS...
UNCERTAINTIES FROM THE DAY 2/WEDNESDAY PERIOD CARRYOVER INTO
THURSDAY...ESPECIALLY REGARDING THE LIKELIHOOD/EXTENT OF EARLY DAY
PRECIPITATION AND THE EFFECTIVE LOCATION OF THE EAST-SOUTHEASTWARD
MOVING COLD FRONT ACROSS THE REGION. EVEN SO...GIVEN A WESTERLY
MOIST/UNSTABLE FEED IN CONJUNCTION WITH MODERATELY STRONG/CYCLONIC
WEST-NORTHWESTERLY FLOW ALOFT...SEVERAL CORRIDORS OF ISOLATED SEVERE
WIND/HAIL MAY OCCUR ACROSS THE REGION ESPECIALLY THURSDAY
AFTERNOON/EARLY EVENING.

...LOWER MO VALLEY/MIDDLE MS VALLEY THURSDAY NIGHT...
CURRENT INDICATIONS ARE THAT TSTMS SHOULD EXPAND INTO THE
REGION/DEVELOP ON THE EDGE OF THE CAP THURSDAY NIGHT AS A LOW LEVEL
JET STRENGTHENS. GIVEN THIS SCENARIO...THE PROXIMITY OF STEEP LAPSE
RATES/RESERVOIR OF ELEVATED INSTABILITY SUGGEST SEVERE HAIL WOULD BE
POSSIBLE WITH THE STRONGEST STORMS.

...SOUTHEAST MT/FAR NORTHEAST WY...
A FEW STRONG TSTMS CANNOT BE RULED OUT THURSDAY AFTERNOON/EVENING
ACROSS THE REGION...BUT THE UNCERTAIN DEGREE OF
MOISTENING/DESTABILIZATION PRECLUDES SEVERE PROBABILITIES AT THE DAY
3 JUNCTURE.

..GUYER.. 04/24/2012

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KMFR [240618]: Preliminary Local Storm Report

NWUS56 KMFR 240618
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1118 PM PDT MON APR 23 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1117 PM TSTM WND DMG TILLER 42.93N 122.95W
04/23/2012 DOUGLAS OR PUBLIC

DIME SIZE HAIL WITH A THUNDERSTORM BETWEEN 300 AND 330 PM
MONDAY 4/23. ANOTHER WINDY STORM CAME THROUGH AROUND 530
PM AND OAK TREE WAS BLOWN DOWN ONTO A VEHICLE. THIS
OCCURRED NEAR MILO IN DOUGLAS COUNTY...BETWEEN TILLER AND
DAYS CREEK.


&&

$$

STOCKTON

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KPDT [240600]: Preliminary Local Storm Report

NWUS56 KPDT 240600
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
1100 PM PDT MON APR 23 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0911 PM TSTM WND GST UMATILLA 45.91N 119.33W
04/23/2012 E58 MPH UMATILLA OR PUBLIC

UMATILLA SOUTH HILL. WEATHER INSTRUMENT RECORDED 58 MPH
WIND GUST.


&&

$$

VP

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 240600
SWODY2
SPC AC 240559

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1259 AM CDT TUE APR 24 2012

VALID 251200Z - 261200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PORTIONS OF THE
MIDWEST/OH VALLEY...

...MIDDLE/UPPER MS VALLEY AND MIDWEST/OH VALLEY...
CONCERN REMAINS THAT NUMERICAL GUIDANCE IS TOO AGGRESSIVE WITH
BOUNDARY LAYER MOISTENING INTO WEDNESDAY ACROSS THE REGION GIVEN
POTENTIAL FOR MIXING AND CURRENT/SHORT-TERM FLOW TRAJECTORIES VIA
THE CENTRAL CONUS/GULF OF MEXICO ANTICYCLONE. BUT EVEN SO...BOUNDARY
LAYER MOISTENING WILL OCCUR NEAR A SHARPENING WARM FRONT/ADJACENT
WARM SECTOR AS A PLUME OF STEEP LAPSE RATES ALOFT ADVECTS EASTWARD
TOWARD THE MIDDLE MS VALLEY/TN VALLEY.

SPECIFIC SCENARIO CONFIDENCE IS NOT PARTICULARLY HIGH GIVEN
ANTICIPATED NEBULOUS/LOW AMPLITUDE WEST-NORTHWESTERLY FLOW
ALOFT...POTENTIAL FOR WARM SECTOR CAPPING...IN ADDITION TO VARIED
GUIDANCE SOLUTIONS. HOWEVER...A SLIGHT RISK APPEARS WARRANTED AT
LEAST IN A CONDITIONAL/ISOLATED SENSE. AN ASSORTMENT OF NUMERICAL
GUIDANCE IS INDICATIVE OF THE POTENTIAL FOR ONE OR MORE
PROGRESSIVE/LOW AMPLITUDE DISTURBANCES ALOFT TO COINCIDE
WITH A RELATIVELY MOIST/POTENTIALLY UNSTABLE AIRMASS IN VICINITY OF
THE AFOREMENTIONED WARM FRONT...AND ALONG/SOUTH OF A
SOUTH-SOUTHEASTWARD MOVING COLD FRONT ACROSS THE UPPER MIDWEST.

INITIALLY...SOME ELEVATED TSTMS CAPABLE OF HAIL CANNOT BE RULED OUT
EARLY IN THE DAY ACROSS THE MIDDLE/UPPER MS RIVER VALLEY. INTO THE
AFTERNOON...INITIAL SURFACE BASED DEVELOPMENT COULD OCCUR ACROSS THE
UPPER MS RIVER VALLEY NEAR A SURFACE LOW/TRIPLE POINT...WITH AT
LEAST A CONDITIONAL SEVERE THREAT POSSIBLE PENDING TSTM DEVELOPMENT.
HOWEVER...THE RELATIVELY MOST CONFIDENT SCENARIO IS FOR TSTMS TO
NOCTURNALLY INCREASE ACROSS THE MIDWEST/OH VALLEY AFTER DARK AS LOW
LEVEL JET AIDED ISENTROPIC ASCENT INCREASES ALONG/NORTHEAST OF THE
WARM FRONT. AT THE VERY LEAST...SOME OF THE STRONGER STORMS WILL BE
CAPABLE OF SEVERE HAIL GIVEN THE PROXIMITY OF STEEP LAPSE RATES
ALOFT/AMPLE ELEVATED INSTABILITY AMID A HIGH DEGREE OF VERTICAL
SHEAR.

...PACIFIC NORTHWEST/NORTHERN INTERMOUNTAIN REGION...
HEIGHT FALLS WILL OCCUR ACROSS THE REGION WITH BACKING/STRENGTHENING
FLOW ALOFT AS AN UPPER TROUGH AMPLIFIES/DIGS SOUTHEASTWARD OFF THE
COAST OF THE PACIFIC NORTHWEST. IT APPEARS THAT ANOTHER DAY OF
SPORADIC HAIL/GUSTY TSTM WIND POTENTIAL MAY BE POSSIBLE ACROSS THE
REGION ESPECIALLY DURING THE AFTERNOON/EVENING GIVEN INCREASING
PRECIPITABLE WATER/VERTICAL SHEAR.

...FAR SOUTHERN CA/AZ...
A SOUTHERN STREAM UPPER TROUGH WILL BECOME MORE PROGRESSIVE AND
APPROACH FAR SOUTHERN CA/NORTHERN BAJA BY WEDNESDAY NIGHT.
ANTICIPATED LIMITED BUOYANCY PRECLUDES SEVERE PROBABILITIES AT THIS
TIME...BUT SOME SMALL HAIL AND/OR WATERSPOUTS CANNOT CURRENTLY BE
RULED OUT FOR COASTAL FAR SOUTHERN CA/ADJACENT OFFSHORE AREAS.

..GUYER.. 04/24/2012

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KPDT [240552]: Preliminary Local Storm Report

NWUS56 KPDT 240552
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
1052 PM PDT MON APR 23 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0904 PM TSTM WND GST ECHO 45.74N 119.19W
04/23/2012 E58 MPH UMATILLA OR PUBLIC

MADISON FARMS WEATHER INSTRUMENT RECORDED 58 MPH WIND
GUST.


&&

$$

VP

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 240535
SWODY1
SPC AC 240533

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1233 AM CDT TUE APR 24 2012

VALID 241200Z - 251200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
AS A LARGE ERN U.S. UPPER TROUGH BEGINS LIFTING NEWD/AWAY FROM THE
SERN CONUS...AN UPPER LOW OVER THE ERN PACIFIC IS PROGGED TO BEGIN
ADVANCING TOWARD THE CA COAST AS A SECOND LOW BEGINS DIGGING SWD OUT
OF THE GULF OF CA. MEANWHILE...BETWEEN THE ERN AND WRN U.S.
TROUGHS...A LARGE RIDGE OF HIGH PRESSURE WILL REMAIN CENTERED OVER
THE ROCKIES THROUGH THE PERIOD.

AT THE SURFACE...A DEEP LOW INITIALLY OVER SRN ONTARIO IS FORECAST
TO WEAKEN AS IT LIFTS NWD ACROSS QUEBEC. MEANWHILE...A MORE COMPLEX
PATTERN IS PROGGED OVER THE CENTRAL CONUS...WITH SURFACE TROUGHING
EXPECTED ACROSS THE NRN PLAINS...A WEAK LEE TROUGH ACROSS THE
CENTRAL AND SRN HIGH PLAINS...AND IN BETWEEN -- A WARM FRONT
FORECAST TO EXTEND ESEWD ACROSS THE MID AND LOWER MO VALLEY THROUGH
MUCH OF THE PERIOD.

...NRN GREAT BASIN/ERN PORTIONS OF THE PAC NW EWD TO THE NRN
PLAINS...
AS SEVERAL WEAK DISTURBANCES ALOFT ARC NEWD/EWD ACROSS THE REGION --
WITHIN FAST FLOW ON THE NRN SIDE OF THE MAIN UPPER RIDGE...SCATTERED
TO ISOLATED DIURNAL STORM DEVELOPMENT IS EXPECTED IN CONJUNCTION
WITH DAYTIME HEATING/DESTABILIZATION. INITIAL CONVECTIVE
DEVELOPMENT IS FORECAST FROM PARTS OF NV NWD AND EWD INTO MT/NRN
WY...WHERE A FEW STRONGER CELLS MAY PRODUCE GUSTY WINDS AND MARGINAL
HAIL. WITH TIME...CONVECTION SHOULD SPREAD EWD OUT OF THE HIGHER
TERRAIN AND INTO ERN MT AND EVENTUALLY THE NRN PLAINS. HERE...A
DEEP DRY BOUNDARY LAYER MAY PROMOTE EVAPORATIVELY-COOLED DOWNDRAFTS
-- AND THUS AN EWD EXPANSION OF 5% WIND PROBABILITY ACROSS THIS
REGION IS WARRANTED FOR LATE AFTERNOON/EVENING STORMS.

...MID/LOWER MO VALLEY INTO THE MID MS/LOWER OH/TN VALLEY REGION...
LOW-LEVEL WARM ADVECTION -- ASSOCIATED WITH A WLY LOW-LEVEL JET
TRANSLATING SEWD ACROSS THE CENTRAL U.S. -- ATOP A WARM FRONT
PROGGED TO EXTEND ESEWD ACROSS THIS REGION SHOULD FUEL A BAND OF
SHOWERS AND THUNDERSTORMS TO THE COOL SIDE OF THE FRONT THROUGH MUCH
OF THE PERIOD. WITH THE WARM SECTOR BOUNDARY LAYER LIKELY TO REMAIN
CAPPED HINDERING SURFACE-BASED DEVELOPMENT...ANY SEVERE POTENTIAL
WILL LIKELY REMAIN MARGINAL/ISOLATED...AND CONFINED MAINLY TO HAIL.

..GOSS.. 04/24/2012

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KPDT [240529]: Preliminary Local Storm Report

NWUS56 KPDT 240529
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
1028 PM PDT MON APR 23 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1000 PM TSTM WND GST 10 N PASCO 46.40N 119.13W
04/23/2012 E59 MPH FRANKLIN WA AMATEUR RADIO

0942 PM TSTM WND GST PASCO 46.25N 119.13W
04/23/2012 E62 MPH FRANKLIN WA ASOS

0901 PM TSTM WND GST HERMISTON 45.83N 119.28W
04/23/2012 E60 MPH UMATILLA OR ASOS


&&

$$

VP

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KPDT [240435]: Preliminary Local Storm Report

NWUS56 KPDT 240435
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
934 PM PDT MON APR 23 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0840 PM HEAVY RAIN SSE HEPPNER 45.35N 119.55W
04/23/2012 M0.75 INCH MORROW OR TRAINED SPOTTER

OVER A 35 MINUTE PERIOD BETWEEN 805 AND 840 PM.

0855 PM HEAVY RAIN NNW HEPPNER 45.36N 119.55W
04/23/2012 M1.23 INCH MORROW OR TRAINED SPOTTER

OVER A 1 HOUR PERIOD.


&&

$$

JSOLOMON

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KBOI [240417]: Preliminary Local Storm Report

NWUS55 KBOI 240417
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
1017 PM MDT MON APR 23 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0439 PM TSTM WND GST BOISE 43.61N 116.23W
04/23/2012 M48.00 MPH ADA ID ASOS

0945 PM TSTM WND DMG WEISER 44.25N 116.97W
04/23/2012 WASHINGTON ID COUNTY OFFICIAL

LARGE TREE LIMBS REPORTED DOWN AND POWER OUTAGES AT
WEISER.


&&

$$

LCOLIN

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