KJAX [090242]: Preliminary Local Storm Report

NWUS52 KJAX 090242
LSRJAX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1042 PM EDT WED APR 08 2009

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

0800 PM FLOOD 3 NE SUWANNEE RIVER STA 30.43N 83.13W
04/08/2009 HAMILTON FL PUBLIC

A RESIDENT REPORTED FLOODING AT THEIR HOME ALONG THE
SUWANNEE RIVER ON SW 59TH BOULEVARD IN SOUTHWESTERN
HAMILTON COUNTY. THE HOME WAS SURROUNDED BY FLOOD WATERS
WITH 3 FEET OF WATER ON THEIR FIRST FLOOR.

&&

$$

SHULER

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KSLC [090151]: Preliminary Local Storm Report

NWUS55 KSLC 090151
LSRSLC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
750 PM MDT WED APR 08 2009

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

0200 AM NON-TSTM WND GST ALTA 40.59N 111.65W
04/08/2009 M59 MPH SALT LAKE UT MESONET

CARDIFF PEAK - 10059 FT

0915 AM NON-TSTM WND GST STOCKTON 40.46N 112.41W
04/08/2009 M61 MPH TOOELE UT MESONET

SOUTH MOUNTAIN - 6001 FT

0145 PM NON-TSTM WND GST SUNDANCE 40.37N 111.59W
04/08/2009 M64 MPH UTAH UT MESONET

SUNDANCE - ARROWHEAD - 8251 FT

0100 PM NON-TSTM WND GST PARK CITY 40.61N 111.53W
04/08/2009 M59 MPH SUMMIT UT MESONET

DV - EMPIRE PK - 9570 FT

0200 PM NON-TSTM WND GST CRANMER 40.61N 111.48W
04/08/2009 M61 MPH SUMMIT UT MESONET

DV - MOUNT BALDY - 9347 FT

0208 PM NON-TSTM WND GST MONROE 38.63N 112.06W
04/08/2009 M61 MPH SEVIER UT MESONET

SIGNAL PEAK - 8792 FT

0220 PM NON-TSTM WND GST MAGNA 40.73N 112.21W
04/08/2009 M60 MPH SALT LAKE UT MESONET

GREAT SALT LAKE MARINA - 4206 FT

0400 PM NON-TSTM WND GST ALTA 40.57N 111.64W
04/08/2009 M61 MPH SALT LAKE UT MESONET

CENTRAL WASATCH PEAKS - 11066 FT

0500 PM NON-TSTM WND GST SNOWBASIN 41.20N 111.88W
04/08/2009 M65 MPH WEBER UT MESONET

OGDEN PEAK - 9570 FT

&&

$$

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KMAF [090148]: Preliminary Local Storm Report

NWUS54 KMAF 090148
LSRMAF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
848 PM CDT WED APR 08 2009

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

0833 PM NON-TSTM WND GST WINK 31.76N 103.15W
04/08/2009 E60 MPH WINKLER TX BROADCAST MEDIA

ESTIMATED 60 MPH WIND GUST GENERATED FROM A PASSING VIRGA
SHOWER. OFF-DUTY BROADCAST MEDIA.

&&

$$

CGITRO

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KGJT [090056]: Preliminary Local Storm Report

NWUS55 KGJT 090056
LSRGJT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
656 PM MDT WED APR 08 2009

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

0624 PM NON-TSTM WND GST MEEKER 40.05N 107.89W
04/08/2009 M54 MPH RIO BLANCO CO ASOS

&&

$$

MSCHWIT

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 090045
SWODY1
SPC AC 090042

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0742 PM CDT WED APR 08 2009

VALID 090100Z - 091200Z

...NO SVR TSTM AREAS FORECAST...

...GREAT BASIN/ROCKIES...
DESPITE RATHER LOW MOISTURE CONTENT TO THE AIR MASS...SURFACE
HEATING ACROSS THE HIGHER TERRAIN...BENEATH RELATIVELY COOL AIR
ALOFT...HAS CONTRIBUTED STEEP LAPSE RATES AND WEAK CONDITIONAL
INSTABILITY ACROSS A LARGE PORTION OF THE INTERMOUNTAIN WEST AND
ROCKIES. SCATTERED THUNDERSTORM ACTIVITY HAS PRIMARILY BEEN
CONFINED TO A ZONE OF STRONGER LIFT/COOLING IN THE LEFT EXIT REGION
OF A WEAKENING MID-LEVEL JET...NOW NOSING NORTH NORTHEASTWARD ACROSS
THE COLORADO/WYOMING ROCKIES.

MUCH OF THE ACTIVITY WEST OF THE CONTINENTAL DIVIDE SEEMS LIKELY TO
DIMINISH SHORTLY AFTER SUNSET WITH THE LOSS OF DAYTIME HEATING. TO
THE EAST OF THE MID-LEVEL CIRCULATION ACCOMPANYING THE JET
STREAK...FORCING MAY BE SUFFICIENT TO MAINTAIN SCATTERED WEAK HIGH
BASED STORMS TO THE LEE OF THE WYOMING ROCKIES INTO THE EVENING
HOURS. HOWEVER...EVEN THIS ACTIVITY LIKELY WILL DIMINISH BY
02-04Z...AS THE FORCING SPREADS INTO A PROGRESSIVELY COOLER
LOW-LEVEL ENVIRONMENT ACROSS THE NORTH CENTRAL HIGH PLAINS...AND THE
ENVIRONMENT IN CLOSER PROXIMITY TO THE HIGHER TERRAIN COOLS WITH THE
LOSS OF DAYTIME HEATING.

STRENGTHENING FORCING ASSOCIATED WITH AN INTENSIFYING MID-LEVEL JET
STREAK AND ASSOCIATED IMPULSE...PROGGED TO NOSE EASTWARD THROUGH THE
FOUR CORNERS REGION LATE THIS EVENING INTO THE OVERNIGHT HOURS
...WILL CONTRIBUTE TO INCREASING CONVECTIVE POTENTIAL ACROSS PARTS
OF THE CENTRAL/SOUTHERN ROCKIES. HOWEVER...DUE TO THE LACK OF MORE
FAVORABLE MOISTURE...ANY THUNDERSTORM ACTIVITY WILL LIKELY BE SPARSE
IN COVERAGE.

..KERR.. 04/09/2009

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KGJT [090029]: Preliminary Local Storm Report

NWUS55 KGJT 090029
LSRGJT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
629 PM MDT WED APR 08 2009

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

0526 PM NON-TSTM WND GST 5 NW MACK 39.27N 108.94W
04/08/2009 M59 MPH MESA CO TRAINED SPOTTER

&&

$$

MSCHWIT

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KGJT [090013]: Preliminary Local Storm Report

NWUS55 KGJT 090013
LSRGJT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
610 PM MDT WED APR 08 2009

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

0215 PM NON-TSTM WND GST GRAND JUNCTION 39.09N 108.55W
04/08/2009 M49.00 MPH MESA CO ASOS

0334 PM NON-TSTM WND GST DURANGO 37.29N 107.87W
04/08/2009 M47.00 MPH LA PLATA CO ASOS

0345 PM NON-TSTM WND GST VERNAL 40.45N 109.54W
04/08/2009 M48.00 MPH UINTAH UT ASOS

0358 PM NON-TSTM WND GST 18 NW MOAB 38.76N 109.78W
04/08/2009 M55.00 MPH GRAND UT ASOS

MEASURED AT CANYONLANDS AIRPORT.

0427 PM NON-TSTM WND GST MONTROSE 38.48N 107.87W
04/08/2009 M47.00 MPH MONTROSE CO ASOS

0455 PM NON-TSTM WND GST CRAIG 40.52N 107.55W
04/08/2009 M47.00 MPH MOFFAT CO ASOS

&&

$$

MSCHWIT

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KPIH [082137]: Preliminary Local Storm Report

NWUS55 KPIH 082137
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
337 PM MDT WED APR 08 2009

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

0230 PM HAIL 8 N KETCHUM 43.80N 114.38W
04/08/2009 E0.25 INCH BLAINE ID TRAINED SPOTTER

1/4 INCH GRAUPEL REPORTED WITH THUNDERSTORM OVERHEAD.

&&

$$

TWYATT

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KBOI [082123]: Preliminary Local Storm Report

NWUS55 KBOI 082123
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
323 PM MDT WED APR 08 2009

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

0300 PM HAIL 2 N TWIN FALLS 42.59N 114.46W
04/08/2009 E0.25 INCH TWIN FALLS ID DEPT OF HIGHWAYS

1/4 INCH HAIL ACCUMULATED TO A DEPTH OF 3 INCHES ON
INTERSTATE I-84 AND HIGHWAY 93 NEAR MILE POST 175. THIS
CAUSED AT LEAST TWO VEHICLE SLIDE OFFS.

&&

$$

JBREIDEN

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KPIH [082106]: Preliminary Local Storm Report

NWUS55 KPIH 082106
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
306 PM MDT WED APR 08 2009

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

0100 PM TORNADO 3 SW BURLEY 42.51N 113.83W
04/08/2009 CASSIA ID LAW ENFORCEMENT

TORNADO SPOTTED BY CASSIA COUNTY SHERIFF DEPUTY ALONG 200
WEST. NO DAMAGE REPORTED. WAS ON THE GROUND FOR LESS THAN
5 MINUTES.

&&

$$

TWYATT

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KBOI [082058]: Preliminary Local Storm Report

NWUS55 KBOI 082058
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
257 PM MDT WED APR 08 2009

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

0250 PM HAIL 5 WSW TWIN FALLS 42.53N 114.55W
04/08/2009 M0.25 INCH TWIN FALLS ID TRAINED SPOTTER

PEA SIZE HAIL FELL FOR 1 HOUR AND ACCUMULATED ON THE
GROUND TO A DEPTH OF 1 INCH. WATER EQUIVALENT IN THE RAIN
GAGE OF RAIN AND MELTED HAIL WAS 1 INCH.

&&

$$

JBREIDEN

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 081958
SWODY1
SPC AC 081954

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0254 PM CDT WED APR 08 2009

VALID 082000Z - 091200Z

...NO SVR TSTM AREAS FORECAST...

-- UPDATES --
...CENTRAL PLAINS...
OVERNIGHT/ELEVATED WARM CONVEYOR ACROSS MOST OF CENTRAL PLAINS STILL
APPEARS BE TOO DRY AND/OR STRONGLY CAPPED FOR AOA 10-PERCENT
UNCONDITIONAL THUNDER PROBABILITIES. HOWEVER...WARM/MOIST ADVECTION
MAY BOOST THETAE SUFFICIENTLY ACROSS PORTIONS CENTRAL...SRN AND WRN
NEB TO RESULT IN WEAKLY CAPPED TO UNCAPPED SOUNDINGS DURING LATTER
3-4 HOURS OF PERIOD. ANY PARCELS THUS LIFTED ISENTROPICALLY TO LFC
WILL HAVE ACCESS TO STEEP MIDLEVEL LAPSE RATES SUPPORTING 100-300
J/KG MUCAPE...ROOTED NEAR 600 MB. ELEVATED MUCAPE MAY BE LARGER
FARTHER SE TOWARD N-CENTRAL KS VICINITY CNK/SLN...BUT GREATER
PROBABILITY OF STG MUCINH AT BASE OF EML KEEPS THUNDER POTENTIAL TOO
MRGL/CONDITIONAL TO EXTEND GEN TSTM AREA THAT FAR SE ATTM.

..EDWARDS.. 04/08/2009

.PREV DISCUSSION... /ISSUED 1117 AM CDT WED APR 08 2009/

...SYNOPSIS...
AN UPR LVL LOW AND ASSOCIATED SURFACE TROUGH/COLD FRONT WILL
PROGRESS EWD ACROSS THE GREAT BASIN AND INTO THE CENTRAL ROCKIES
THROUGH THE DAY AND NIGHT. MEANWHILE...LEE TROUGH DEVELOPMENT OVER
THE HIGH PLAINS WILL EVENTUALLY CONSOLIDATE INTO A SURFACE CYCLONE
OVER THE SRN PLAINS TOWARD THE END OF THE PERIOD...RESULTING IN
STRENGTHENING SOUTHERLY LOW LVL RETURN FLOW OVER TX. FARTHER
EAST...A PERTURBATION ALONG THE WRN SIDE OF A BROAD UPR TROUGH OVER
THE NERN CONUS WILL MOVE TOWARD THE CENTRAL APPALACHIANS THROUGH THE
DAY...AND THEN THE CSTL CAROLINA PLAINS DURING THE NIGHT.

...GREAT BASIN/ROCKIES...
A PLUME OF RELATIVELY HIGHER PWAT VALUES /AOA 0.35 IN PER GPS TPW
GUIDANCE/ WILL CONTINUE TO SPREAD E-NEWD ACROSS THE GREAT
BASIN/ROCKIES DURING THE DAY AS AN UPR TROUGH SHIFTS FROM NV INTO
ID/WY. COLD MID LVL TEMPERATURES /AOB -20 DEG C AT 500 MB BASED ON
12Z RAOB DATA/ WILL ACCOMPANY THE MOISTENING
ENVIRONMENT...CONTRIBUTING TO VERY STEEP LAPSE RATES. THUNDERSTORM
COVERAGE IS EXPECTED TO INCREASE DURING THE AFTERNOON...AND SMALL
HAIL WILL BE POSSIBLE WITH THE STRONGER CORES /PARTICULARLY OVER ERN
ID AND NRN UT INTO WY WHERE DEEP LAYER SHEAR IS EXPECTED TO BE
SLIGHTLY STRONGER/...BUT THESE STORMS ARE CURRENTLY ANTICIPATED TO
REMAIN BELOW SEVERE LEVELS.

...KY/TN/VA...
A LOW AMPLITUDE UPR LVL IMPULSE/VORT MAX WAS OBSERVED IN MID MORNING
WV IMAGERY TRANSLATING SEWD THROUGH IA/IL...AND IS FORECAST TO MOVE
ACROSS ERN KY/TN BY MID TO LATE AFTERNOON. COLD TEMPERATURES ALOFT
/AROUND -10 DEG C AT 700 MB/ COMBINED WITH AFTERNOON HEATING WILL
RESULT IN VERY STEEP LOW LVL LAPSE RATES /AOA 9 C PER KM IN THE 0-3
KM LAYER/. THIS WILL CONTRIBUTE TOWARD THE DEVELOPMENT OF A COUPLE
HUNDRED J/KG OF MUCAPE...WHICH MAY EXTEND INTO THE MIXED PHASE
REGION FAVORING ISOLATED LIGHTNING STRIKES. SMALL HAIL/GRAUPEL MAY
OCCUR WITH AFTERNOON THUNDERSTORMS...BUT SEVERE STORMS ARE NOT
EXPECTED.

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KHNX [081919]: Preliminary Local Storm Report

NWUS56 KHNX 081919
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
1219 PM PDT WED APR 08 2009

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

1200 PM HEAVY SNOW HUNTINGTON LAKE SNOTEL 37.23N 119.22W
04/08/2009 E12.0 INCH FRESNO CA MESONET

ELEV. 7,000

1200 PM HEAVY SNOW CHILKOOT MEADOW SNOTEL 37.41N 119.49W
04/08/2009 E9.0 INCH MADERA CA MESONET

ELEV. 7,150

1200 PM HEAVY SNOW TAMARACK SUMMIT SNOTEL 37.17N 119.20W
04/08/2009 E17.0 INCH FRESNO CA MESONET

ELEV. 7,550

1200 PM HEAVY SNOW GREEN MTN SNOTEL 37.56N 119.24W
04/08/2009 E8.0 INCH MADERA CA MESONET

ELEV. 7,900

1200 PM HEAVY SNOW OSTRANDER LAKE SNOTEL 37.64N 119.55W
04/08/2009 E20.0 INCH MARIPOSA CA MESONET

ELEV. 8,200

1200 PM HEAVY SNOW HORSE MEADOW SNOTEL 38.16N 119.66W
04/08/2009 E8.0 INCH TUOLUMNE CA MESONET

ELEV. 8,400

1200 PM HEAVY SNOW TUOLUMNE MEADOWS SNOTEL 37.87N 119.35W
04/08/2009 E6.0 INCH TUOLUMNE CA MESONET

ELEV. 8,600

1200 PM HEAVY SNOW UPPER BURNT CORRAL SNOT 37.18N 118.94W
04/08/2009 E9.0 INCH FRESNO CA MESONET

ELEV. 9,700

1200 PM HEAVY SNOW VOLCANIC KNOB SNOTEL 37.39N 118.90W
04/08/2009 E16.0 INCH FRESNO CA MESONET

ELEV. 10,050

1200 PM HEAVY SNOW BLACKCAP BASIN SNOTEL 37.07N 118.77W
04/08/2009 E18.0 INCH FRESNO CA MESONET

ELEV. 10,300

1200 PM HEAVY SNOW CHARLOTTE LAKE SNOTEL 36.80N 118.42W
04/08/2009 E19.0 INCH FRESNO CA MESONET

ELEV. 10,400

1200 PM HEAVY SNOW QUAKING ASPEN SNOTEL 36.12N 118.54W
04/08/2009 E10.0 INCH TULARE CA MESONET

ELEV 7,200

1200 PM HEAVY SNOW FAREWELL GAP SNOTEL 36.41N 118.58W
04/08/2009 E13.0 INCH TULARE CA MESONET

ELEV. 9,500

1200 PM HEAVY SNOW CHAGOOPA PLATEAU SNOTEL 36.50N 118.44W
04/08/2009 E11.0 INCH TULARE CA MESONET

ELEV. 10,300

1200 PM HEAVY SNOW LODGEPOLE 36.60N 118.73W
04/08/2009 E8.0 INCH TULARE CA CO-OP OBSERVER

1200 PM HEAVY SNOW TUOLUMNE MEADOWS 37.87N 119.36W
04/08/2009 E5.0 INCH TUOLUMNE CA CO-OP OBSERVER

&&

$$

BPET

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KJKL [081836]: Preliminary Local Storm Report

NWUS53 KJKL 081836
LSRJKL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON KY
236 PM EDT WED APR 08 2009

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

1108 PM TSTM WND DMG 4 WSW PRESTONSBURG 37.66N 82.83W
04/05/2009 FLOYD KY NWS EMPLOYEE

FOUR LARGE LIMBS WERE DOWNED AT THE PROPERTY OF AN NWS
EMPLOYEE.

&&

$$

SCHOETTMER

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KPIH [081836]: Preliminary Local Storm Report

NWUS55 KPIH 081836
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
1235 PM MDT WED APR 08 2009

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

1230 PM SNOW SW STANLEY 44.21N 114.94W
04/08/2009 E2.0 INCH CUSTER ID TRAINED SPOTTER

ESTIMATED 1.5-2 INCHES - STILL SNOWING AS OF 1230PM MDT

&&

$$

JKEYES

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KMFR [081823]: Preliminary Local Storm Report

NWUS56 KMFR 081823
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1123 AM PDT WED APR 08 2009

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

1121 AM SNOW LAKEVIEW 42.19N 120.35W
04/08/2009 E8.0 INCH LAKE OR PUBLIC

ESTIMATED TOTAL FROM 230AM THROUGH 1124AM

&&

$$

BUNKER

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 081739
SWODY2
SPC AC 081736

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1236 PM CDT WED APR 08 2009

VALID 091200Z - 101200Z

...THERE IS A SLGT RISK OF SVR TSTMS PORTIONS OZARKS REGION TO NE TX
AND LOWER MS VALLEY...

...SYNOPSIS...
IN MID-UPPER LEVELS...PROGRESSIVE SHORTWAVE PATTERN OF CONSIDERABLE
AMPLITUDE IS FCST THROUGH PERIOD. UPPER CYCLONE INITIALLY COVERS
NRN PORTIONS CA/NV. THIS FEATURE CONTAINS TWO PRIMARY MID-UPPER
LEVEL VORTICITY LOBES...ONE OVER NWRN CA NEAR SFO...AND ONE OVER
NERN NV...BASED ON LATEST VWP DATA AND MOISTURE CHANNEL IMAGERY.
THESE LOBES ARE FCST TO SPREAD APART...WITH NV VORTICITY CENTER
MOVING ENEWD OVER WY AND WEAKENING THROUGH PERIOD. MEANWHILE...CA
SEGMENT SHOULD PIVOT SEWD TO NM AS COMPACT/STG SHORTWAVE TROUGH BY
9/12Z...MOVING NEWD ACROSS TX PANHANDLE AND SWRN KS/NWRN OK AREA
MID-DAY THURSDAY...THEN FORMING CLOSED 500 MB CYCLONE OVER ERN KS BY
10/06Z.

AT SFC...LEE TROUGHING NOW DEVELOPING OVER CENTRAL/SRN HIGH PLAINS
WILL INTENSIFY THROUGH BEGINNING OF PERIOD AS MID-UPPER TROUGH
APCHS. BY 9/12Z...DEEPENING SFC LOW SHOULD BE LOCATED INVOF NWRN
OK...WITH WARM FRONT ESEWD OVER NRN OK AND SEWD THROUGH ARKLATEX
REGION. SFC CYCLONE SHOULD MOVE GENERALLY EWD ACROSS NRN OK THEN
NEWD TOWARD ERN PORTION KS/OK BORDER BY 10/00Z...WARM FRONT ESEWD
ACROSS OZARKS TO WRN TN...COLD FRONT SWWD OVER WRN OK. LOW SHOULD
REACH PORTIONS CENTRAL/SERN MO BY END OF PERIOD...WITH COLD FRONT
OVER CENTRAL AR AND PORTIONS CENTRAL/SW TX.

DRYLINE IS EXPECTED TO BECOME BETTER DEFINED THROUGH EARLY PERIOD
ALONG W EDGE OF MOISTURE RETURN PROCESS DISCUSSED BELOW. DRYLINE
SHOULD MIX AND ADVECT EWD ACROSS MOST OF OK AND N-CENTRAL/CENTRAL TX
DURING AFTERNOON. BY 00Z...DRYLINE IS FCST FROM NERN OK SSWWD
ACROSS ERN OK -- ALONG OR E OF US-69 CORRIDOR -- SSWWD TO
MIDDLE-LOWER TX COASTAL PLAIN AND LOWER RIO GRANDE VALLEY.
OPERATIONAL NAM/SPECTRAL...EACH OFTEN SLIGHTLY TOO FAR E WITH FCST
DRYLINE POSITIONS...ARE SUPPORTED BY STG CONSENSUS OF 09Z SREF
MEMBERS.

...OZARKS REGION TO NE TX AND LOWER MS VALLEY...
MOST IMPORTANT FACTOR FOR SVR POTENTIAL WILL BE QUALITY OF MOISTURE
THROUGHOUT RETURN-FLOW BOUNDARY LAYER. STG COLD FROPA HAS
PENETRATED THROUGH ENTIRE GULF AND WELL INTO CENTRAL AMERICA AND
CARIBBEAN. NEAREST MARITIME/TROPICAL AIR MASS CONTAINING UPPER 60S
F SFC DEW POINTS IS ANALYZED OVER MEX PAC COAST AND ISTHMUS OF
TEHUANTEPEC ATTM...TOO FAR TO BE INCORPORATED INTO MOIST SECTOR OF
DAY-2 SYSTEM. NARROW PLUME OF VIGOROUS MARINE MODIFICATION IS
UNDERWAY FROM BAY OF CAMPECHE NWD TO OFFSHORE LOWER TX COAST...WITH
MID 50S AND SPOTTY LOW 60S F DEW POINTS EVIDENT. CENTRAL/WRN
OPEN-GULF SST SUPPORTS EQUILIBRIUM DEW POINTS GENERALLY 64-68 DEG
F...THOUGH DIURNAL/VERTICAL MIXING SHOULD REDUCE THESE VALUES WELL
INLAND FROM TX COAST. UPSTREAM BOUNDARY LAYER ALSO APPEARS RATHER
SHALLOW BASED ON MORNING BRO/MERIDA SOUNDINGS...AND LARGE AREA OF
MID-UPPER SUBSIDENCE EVIDENT IN MOISTURE CHANNEL IMAGERY OVER MOST
OF GULF. ACCORDINGLY...PRIND OPERATIONAL NAM...ETA-KF AND
ESPECIALLY ETA-BMJ MEMBERS OF SREF ARE TOO AGGRESSIVE WITH MOISTURE
RETURN. PRIND DEW POINTS SHOULD REACH MAINLY 50S E OF DRYLINE IN
OK BY 21Z...LOW 60S FROM SERN OK OVER MOST OF CENTRAL/ERN
TX...BENEATH STRONG ELEVATED MIXED-LAYER AND RELATED CAPPING.
MOISTURE SHOULD INCREASE CONSIDERABLY AFTER DARK AND JUST ABOVE
SFC...IN NARROW PLUME PRECEDING COLD FRONT AND DRYLINE.

SCATTERED TSTMS SHOULD INITIATE MID-DAY TO MID-AFTERNOON IMMEDIATELY
AHEAD OF SFC CYCLONE TRACK WHERE DEEP-LAYER ASCENT AND
LOW-LEVEL/CONVECTIVE SCALE FORCING WILL BE STRONGEST. ACTIVITY
SHOULD MOVE/EXPAND EWD THROUGH PERIOD ACROSS OZARKS REGION...WITH
SOME SWD BACKBUILDING INVOF COLD FRONT/DRYLINE AS STG CAP IS
OVERCOME LATE AFTERNOON INTO EARLY EVENING. UNCONDITIONAL SVR
POTENTIAL APPEARS GREATEST FROM VICINITY KS/OK BORDER EWD OVER
OZARKS...WITH CONVECTIVE COVERAGE AND SVR THREAT BECOMING MORE
UNCERTAIN WITH SWD EXTENT OVER ARKLATEX REGION AND E TX.

VERTICAL SHEAR PROFILES WILL BE FAVORABLE FOR SUPERCELLS OVER WIDE
AREA...WITH LARGE LOW LEVEL HODOGRAPHS...0-1 KM SRH AOA 200
J/KG...AND EFFECTIVE SHEAR MAGNITUDES AOB 50 KT COMMON OVER MUCH OF
MOIST SECTOR. FCST SFC HEATING...STEEP LAPSE RATES AND DEEP BUOYANT
PROFILES INDICATE MLCAPE EXCEEDING 1500 J/KG EVEN WITH MORE MODEST
MOISTURE RETURN. POTENTIAL FOR DAMAGING HAIL EXISTS WITH ANY
SUSTAINED AND RELATIVELY DISCRETE STORMS. TORNADO THREAT MAY
DEVELOP INVOF SFC WARM FRONT DURING AFTERNOON...WHERE LOW LEVEL
VORTICITY AND BACKED SFC WINDS EACH WILL BE MOST PRONOUNCED.
FARTHER S ALONG/AHEAD OF DRYLINE...TORNADO THREAT APPEARS FAR MORE
CONDITIONAL...ESPECIALLY GIVEN SOMEWHAT HIGH DIURNAL LCL. SOME
TORNADO THREAT MAY BE CONCENTRATED BETWEEN OZARKS AND ARKLATEX
DURING A FEW EVENING HOURS WHEN LCL LOWERS DUE TO COMBINATION OF SFC
COOLING AND MOIST ADVECTION...YET COOLING IS NOT YET TOO STG TO KEEP
EFFECTIVE LIFTED PARCELS ROOTED AT SFC.

..EDWARDS.. 04/08/2009

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KREV [081726]: Preliminary Local Storm Report

NWUS55 KREV 081726
LSRREV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
1026 AM PDT WED APR 08 2009

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

0932 AM SNOW 1 W CEDARVILLE 41.53N 120.18W
04/08/2009 E0.0 INCH MODOC CA TRAINED SPOTTER

RAIN-SNOW MIX IN CEDARVILLE. 3 TO 6 INCHES REPORTED ON
CEDAR PASS. ELEVATION 4630 FT.

0932 AM SNOW 2 NE FORT BIDWELL 41.88N 120.11W
04/08/2009 M1.0 INCH MODOC CA TRAINED SPOTTER

1 INCH OF WET SNOW OVER THE LAST COUPLE HOURS IN FT
BIDWELL. TEMP 35 DEG. EL. 4750 FT.

1024 AM SNOW HOMEWOOD 39.08N 120.16W
04/08/2009 M3.0 INCH PLACER CA TRAINED SPOTTER

3 INCHES OF SNOW FROM 9PM-9AM THIS MORNING IN HOMEWOOD
CA. ELEVATION 6330 FEET.

&&

$$

HOON

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KVEF [081635]: Preliminary Local Storm Report

NWUS55 KVEF 081635
LSRVEF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
934 AM PDT WED APR 08 2009

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

1100 PM SNOW ASPENDELL 37.23N 118.58W
04/07/2009 M4.1 INCH INYO CA CO-OP OBSERVER

THE CO-OP OBSERVER AT ASPENDELL MEASURED 4.1 INCHES OF
SNOW AT 8500 FEET IN ELEVATION BETWEEN 700 PM AND 1100
PM. THE TIME OF THIS EVENT WAS ESTIMATED BASED ON
SATELLITE IMAGERY.

0500 AM SNOW 5 SSE ASPENDELL 37.16N 118.56W
04/08/2009 E5.4 INCH INYO CA MESONET

THE SAWMILL SNOTEL SITE HAD AN ESTIMATED 5.4 INCHES OF
SNOW FROM 8 PM ON THE 7TH THROUGH 5 AM ON THE 8TH AT AN
ELEVATION OF 10200 FEET.

0500 AM SNOW 11 WNW OWENS VALLEY RAW 37.46N 118.74W
04/08/2009 E5.0 INCH MONO CA MESONET

AN ESTIMATED 5.0 INCHES OF SNOW FELL AT THE ROCK CREEK
LAKES SNOTEL AT AN ELEVATION OF 9700 FEET BETWEEN 8PM ON
THE 7TH AND 5 AM ON THE 8TH.

0500 AM SNOW 4 SSE ASPENDELL 37.18N 118.56W
04/08/2009 E6.0 INCH INYO CA MESONET

AN ESTIMATED 6.0 INCHES OF SNOW FELL AT THE SOUTH LAKE
SNOTEL AT AN ELEVATION OF 9600 FEET FROM AROUND 8 PM ON
THE 7TH THROUGH 5 AM ON THE 8TH.

&&

$$

STACHELSKI

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 081620
SWODY1
SPC AC 081617

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1117 AM CDT WED APR 08 2009

VALID 081630Z - 091200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
AN UPR LVL LOW AND ASSOCIATED SURFACE TROUGH/COLD FRONT WILL
PROGRESS EWD ACROSS THE GREAT BASIN AND INTO THE CENTRAL ROCKIES
THROUGH THE DAY AND NIGHT. MEANWHILE...LEE TROUGH DEVELOPMENT OVER
THE HIGH PLAINS WILL EVENTUALLY CONSOLIDATE INTO A SURFACE CYCLONE
OVER THE SRN PLAINS TOWARD THE END OF THE PERIOD...RESULTING IN
STRENGTHENING SOUTHERLY LOW LVL RETURN FLOW OVER TX. FARTHER
EAST...A PERTURBATION ALONG THE WRN SIDE OF A BROAD UPR TROUGH OVER
THE NERN CONUS WILL MOVE TOWARD THE CENTRAL APPALACHIANS THROUGH THE
DAY...AND THEN THE CSTL CAROLINA PLAINS DURING THE NIGHT.

...GREAT BASIN/ROCKIES...
A PLUME OF RELATIVELY HIGHER PWAT VALUES /AOA 0.35 IN PER GPS TPW
GUIDANCE/ WILL CONTINUE TO SPREAD E-NEWD ACROSS THE GREAT
BASIN/ROCKIES DURING THE DAY AS AN UPR TROUGH SHIFTS FROM NV INTO
ID/WY. COLD MID LVL TEMPERATURES /AOB -20 DEG C AT 500 MB BASED ON
12Z RAOB DATA/ WILL ACCOMPANY THE MOISTENING
ENVIRONMENT...CONTRIBUTING TO VERY STEEP LAPSE RATES. THUNDERSTORM
COVERAGE IS EXPECTED TO INCREASE DURING THE AFTERNOON...AND SMALL
HAIL WILL BE POSSIBLE WITH THE STRONGER CORES /PARTICULARLY OVER ERN
ID AND NRN UT INTO WY WHERE DEEP LAYER SHEAR IS EXPECTED TO BE
SLIGHTLY STRONGER/...BUT THESE STORMS ARE CURRENTLY ANTICIPATED TO
REMAIN BELOW SEVERE LEVELS.

...KY/TN/VA...
A LOW AMPLITUDE UPR LVL IMPULSE/VORT MAX WAS OBSERVED IN MID MORNING
WV IMAGERY TRANSLATING SEWD THROUGH IA/IL...AND IS FORECAST TO MOVE
ACROSS ERN KY/TN BY MID TO LATE AFTERNOON. COLD TEMPERATURES ALOFT
/AROUND -10 DEG C AT 700 MB/ COMBINED WITH AFTERNOON HEATING WILL
RESULT IN VERY STEEP LOW LVL LAPSE RATES /AOA 9 C PER KM IN THE 0-3
KM LAYER/. THIS WILL CONTRIBUTE TOWARD THE DEVELOPMENT OF A COUPLE
HUNDRED J/KG OF MUCAPE...WHICH MAY EXTEND INTO THE MIXED PHASE
REGION FAVORING ISOLATED LIGHTNING STRIKES. SMALL HAIL/GRAUPEL MAY
OCCUR WITH AFTERNOON THUNDERSTORMS...BUT SEVERE STORMS ARE NOT
EXPECTED.

..GARNER/EVANS.. 04/08/2009

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KPDT [081605]: Preliminary Local Storm Report

NWUS56 KPDT 081605
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
905 AM PDT WED APR 08 2009

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

0730 AM NON-TSTM WND GST 5 NE SISTERS 44.34N 121.49W
04/08/2009 M53.00 MPH DESCHUTES OR TRAINED SPOTTER

&&

$$

GKH

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WATCHES: Test...tornado Watch - Number 9991...test

WWUS20 KWNS 081603
SEL1
SPC WW 081603
NEZ000-081600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TEST...TORNADO WATCH - NUMBER 9991...TEST
NWS STORM PREDICTION CENTER NORMAN OK
1103 AM CDT WED APR 8 2009

THE NWS STORM PREDICTION CENTER HAS CANCELLED...TEST...
TORNADO WATCH NUMBER 9991 ISSUED AT 1000 AM CDT FOR PORTIONS OF

NEBRASKA

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WATCHES: Test...tornado Watch - Number 9990...test

WWUS20 KWNS 081603
SEL0
SPC WW 081603
IAZ000-081600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TEST...TORNADO WATCH - NUMBER 9990...TEST
NWS STORM PREDICTION CENTER NORMAN OK
1103 AM CDT WED APR 8 2009

THE NWS STORM PREDICTION CENTER HAS CANCELLED...TEST...
TORNADO WATCH NUMBER 9990 ISSUED AT 950 AM CDT FOR PORTIONS OF

IOWA

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KVEF [081524]: Preliminary Local Storm Report

NWUS55 KVEF 081524
LSRVEF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
823 AM PDT WED APR 08 2009

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

0134 AM NON-TSTM WND GST 4 NNW BLUE DIAMOND RIDG 36.13N 115.43W
04/08/2009 M58.00 MPH CLARK NV MESONET

THE RED ROCK CANYON RAWS MEASURED A PEAK WIND GUST OF 58
MPH AT 134 AM AND AGAIN AT 334 AM AT AN ELEVATION OF 3756
FEET.

0253 AM NON-TSTM WND GST NORTH LAS VEGAS AP 36.21N 115.20W
04/08/2009 M44.00 MPH CLARK NV ASOS

THE NORTH LAS VEGAS AIRPORT MEASURED A PEAK WIND GUST OF
44 MPH AT 253 AM AT AN ELEVATION OF 2268 FEET. WIND GUSTS
OF 40 MPH OR GREATER WERE RECORDED BETWEEN 253 AM AND 453
MPH.

&&
GUSTY DOWNSLOPE WINDS DEVELOPED OVERNIGHT IN THE LEE OF THE SPRING
MOUNTAINS. THE HIGHEST WIND GUSTS EXTENDED FROM RED ROCK CANYON INTO
THE WESTERN PORTION OF THE LAS VEGAS VALLEY.
$$

STACHELSKI

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KVEF [081512]: Preliminary Local Storm Report

NWUS55 KVEF 081512
LSRVEF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
812 AM PDT WED APR 08 2009

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

0440 PM NON-TSTM WND GST 3 WSW INDEPENDENCE 36.78N 118.24W
04/07/2009 M58.00 MPH INYO CA MESONET

SIERRA ROTORS SITE NUMBER 2 AT AN ELEVATION OF 4842 FEET
RECORDED A PEAK WIND GUST OF 58 MPH.

&&

$$

STACHELSKI

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WATCHES: Test...tornado Watch Number 9991...test

WWUS20 KWNS 081458
SEL1
SPC WW 081458
NEZ000-081600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TEST...TORNADO WATCH NUMBER 9991...TEST
NWS STORM PREDICTION CENTER NORMAN OK
1000 AM CDT WED APR 8 2009

THE NWS STORM PREDICTION CENTER HAS ISSUED A...TEST...
TORNADO WATCH FOR PORTIONS OF

NEBRASKA

EFFECTIVE THIS WEDNESDAY MORNING FROM 1000 AM UNTIL 1100 AM CDT.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TEST TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 105
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES NORTHWEST
OF SIDNEY NEBRASKA TO 55 MILES NORTH NORTHEAST OF LINCOLN
NEBRASKA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 9990...

DISCUSSION......THIS IS A TEST TORNADO WATCH...

...THIS IS ONLY A TEST...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400.
MEAN STORM MOTION VECTOR 27025.

...CARBIN

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WATCHES: Test...tornado Watch Number 9990...test

WWUS20 KWNS 081451
SEL0
SPC WW 081451
IAZ000-081600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TEST...TORNADO WATCH NUMBER 9990...TEST
NWS STORM PREDICTION CENTER NORMAN OK
950 AM CDT WED APR 8 2009

THE NWS STORM PREDICTION CENTER HAS ISSUED A...TEST...
TORNADO WATCH FOR PORTIONS OF

IOWA

EFFECTIVE THIS WEDNESDAY MORNING FROM 950 AM UNTIL 1100 AM CDT.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TEST TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES WEST OF
DENISON IOWA TO 30 MILES EAST NORTHEAST OF CEDAR RAPIDS IOWA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU0).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

DISCUSSION......THIS IS A TEST TORNADO WATCH...

...THIS IS ONLY A TEST...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400.
MEAN STORM MOTION VECTOR 27025.

...CARBIN

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KJAN [081420]: Preliminary Local Storm Report

NWUS54 KJAN 081420
LSRJAN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
920 AM CDT WED APR 08 2009

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

1107 PM TSTM WND GST ST. JOSEPH 31.92N 91.24W
03/25/2009 E75.00 MPH TENSAS LA NWS STORM SURVEY

ON THE S SIDE OF TOWN...SEVERAL TREES WERE UPROOTED AND
DAMAGED WITH A COUPLE DOWN ON A FEW HOMES. SOME ROOFS
WERE DAMAGED AS WELL...MOSTLY IN THE FORM OF TIN PEALED
OFF.

1110 PM TSTM WND GST 1 NE ST. JOSEPH 31.93N 91.23W
03/25/2009 E90.00 MPH TENSAS LA NWS STORM SURVEY

INTENSE STRAIGHT LINE WINDS BLEW THROUGH ST. JOSEPH WITH
AROUND 90 MPH WINDS. SEVERAL STRUCTURES WERE DAMAGED WITH
MINOR TO MAJOR ROOF DAMAGE. A OPEN TRACTOR SHED HAD THE
ROOF TORN OFF ALONG WITH ANOTHER SHED. A STRING OF 12
POWER LINES WERE DOWN WITH AROUND 12 POLES LEANING OVER.
ONE POLE WAS SNAPPED AT THE CROSSBOW. MOST OF THIS AREA
WAS OPEN...BUT SEVERAL TREES WERE SNAPPED AND UPROOTED
NEAR THE LEVEE. THIS DAMAGE STARTED ON THE N SIDE OF TOWN
AND MOVED NE TOWARDS THE RIVER.

&&

$$

CME

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 081211
SWODY1
SPC AC 081208

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0708 AM CDT WED APR 08 2009

VALID 081300Z - 091200Z

...NO SVR TSTM AREAS FORECAST...

...GREAT BASIN/ROCKIES...
UPPER LOW OVER NORTHERN CA WILL MOVE EASTWARD ACROSS THE GREAT BASIN
TODAY...SPREADING COLD TEMPERATURES ALOFT AND STEEP LAPSE RATES OVER
MUCH OF THE WESTERN STATES. DAYTIME HEATING AND LIFT ASSOCIATED
WITH THE UPPER LOW WILL RESULT IN A BROAD AREA OF POTENTIAL FOR
AFTERNOON THUNDERSTORMS FROM THE EASTERN GREAT BASIN ACROSS THE
CENTRAL AND NORTHERN ROCKIES. HAIL WILL BE POSSIBLE IN STRONGER
CORES...BUT NO SEVERE WEATHER IS ANTICIPATED.

...NEB/KS...
LOW LEVEL WARM ADVECTION WILL INCREASE RAPIDLY OVERNIGHT AS SURFACE
CYCLOGENESIS ENHANCES THE LOW LEVEL JET. THIS WILL RESULT IN AN
INCREASING RISK OF ISOLATED CONVECTION FROM PARTS OF NEB/KS INTO
MO/AR. MOST OF THIS ACTIVITY WILL LIKELY OCCUR SHORTLY AFTER
12Z...BUT AT LEAST PARTS OF NEB/KS MAY SEE THUNDERSTORMS BEFORE THE
END OF THIS FORECAST PERIOD.

...KY/TN/VA...
MID LEVEL SPEED MAX IS TRACKING SOUTH-SOUTHEASTWARD ACROSS THE UPPER
MS VALLEY THIS MORNING. THIS FEATURE IS EXPECTED TO ROTATE INTO THE
OH VALLEY BY AFTERNOON AND RESULT IN SCATTERED PRECIPITATION FOR
PARTS OF KY/WV/TN/VA. FORECAST SOUNDINGS SUGGEST THAT THERMODYNAMIC
PROFILES WILL BE MARGINAL FOR CHARGE SEPARATION. THE AREA OF
GREATEST RISK FOR A FEW LIGHTNING STRIKES WILL BE OVER SOUTHEASTERN
KY/EASTERN TN WHERE SLIGHTLY WARMER PROFILES ARE ANTICIPATED.

..HART/HURLBUT.. 04/08/2009

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 080842
SWOD48
SPC AC 080841

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0341 AM CDT WED APR 08 2009

VALID 111200Z - 161200Z

...DISCUSSION...
ACTIVE WEATHER PATTERN WILL CONTINUE INTO MID-NEXT WEEK. SHORTWAVE
ENERGY OVER THE ERN PAC WILL CONTINUE TO DIG SWD AS CLOSED LOWS
ALONG THE WEST CST...THEN EJECT ENE TO THE CNTRL/SRN PLNS. THE
SECOND SYSTEM WILL ARRIVE ALONG THE HIGH PLNS BY LATE SATURDAY...BUT
RECENT TRENDS HAVE BEEN FOR THE MEDIUM RANGE GUIDANCE TO SLOW THIS
SYSTEM DOWN. 00Z ECMWF IS PREFERRED AS THE GFS APPEARS TO BE ON THE
FAST SIDE OF THE MODEL GUIDANCE ENVELOPE.

RICH LLVL MOISTURE WILL HAVE GATHERED OVER THE WRN GULF BASIN BY THE
WEEKEND AND IS EXPECTED TO SURGE NW INTO TX SATURDAY/SATURDAY NIGHT.
LARGER SCALE HEIGHT FALLS BEGIN TO EDGE ONTO THE W TX HIGH PLNS
INVOF THE DRYLINE VERY LATE SATURDAY...SO WIDESPREAD SVR STORMS MAY
NOT MATERIALIZE ON DAY 4 /SAT-SAT NITE/ AS ONCE EXPECTED.
RATHER...ISOLD SVR STORMS WILL PROBABLY EXPAND ENE FROM W TX INTO OK
BY SUNDAY MORNING.

HIGHER END SVR POTENTIAL NOW APPEARS LIKELY FROM CNTRL/ERN TX EWD
TOWARD THE LWR MS VLY ON DAY 5 /SUNDAY-SUNDAY NITE/. WHILE
CLOUDS/ELEVATED CONVECTION BECOMES COMMONPLACE GENERALLY NORTH OF
THE RED RVR...AIR MASS SHOULD DESTABILIZE ACROSS THE WARM SECTOR
SUNDAY AFTN/EVE. TSTMS SHOULD DEVELOP ALONG/E OF THE
DRYLINE/SFC-LOW TRACK ACROSS CNTRL TX. MAGNITUDE OF
MOISTURE...STEEP LAPSE RATES IN THE MID-LVLS AND 60-80 KTS OF SWLY
H5 FLOW WILL LIKELY LEAD TO NUMEROUS SVR STORMS WITH LARGE
HAIL...DMGG WIND GUSTS AND TORNADOES. THIS ACTIVITY WILL PROBABLY
ADVANCE E AS FAR AS THE LWR MS VLY BY EARLY SUNDAY WITH THE STRONGER
TSTMS FEEDING ON THE NRN EDGE OF THE HIGHER THETA-E AIR MASS.

BEYOND SUNDAY...MODEL PREDICTABILITY BECOMES LOW WITH RESPECT TO THE
HANDLING OF THE CYCLONE AS IT PROGRESSES EWD. THUS...A SVR OTLK IS
NOT YET JUSTIFIED FOR NEXT WEEK.

..RACY.. 04/08/2009

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KHNX [080808]: Preliminary Local Storm Report

NWUS56 KHNX 080808
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
108 AM PDT WED APR 08 2009

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

0102 AM HAIL FRESNO 36.78N 119.79W
04/08/2009 E0.50 INCH FRESNO CA TRAINED SPOTTER

ONE-HALF INCH HAIL REPORTED IN FRESNO WITH ACCUMULATION
ON STREETS

&&

$$

JBRO

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 080730
SWODY3
SPC AC 080728

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0228 AM CDT WED APR 08 2009

VALID 101200Z - 111200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER A LARGE PART OF THE OH/TN
VLYS SWWD INTO THE DEEP SOUTH...

...SYNOPSIS...
MID-LVL WAVE LOCATED OVER THE MID/LWR MS VLY EARLY FRIDAY WILL
DAMPEN OVER THE APLCN MOUNTAINS FRIDAY NIGHT AS THE NEXT IN A SERIES
OF UPR SYSTEMS DIGS INTO SRN CA/DESERT SW. SFC LOW ATTENDANT WITH
THE LEAD TROUGH WILL MOVE ALONG THE OH RVR FROM SRN IL TO SRN OH BY
00Z SATURDAY BEFORE REDEVELOPING EAST OF THE VA MOUNTAINS BY
SATURDAY MORNING. TRAILING THE LOW...A CDFNT WILL MOVE SEWD INTO
THE CAROLINAS BY SATURDAY MORNING...BUT BEGIN TO STALL OVER DIXIE
AND SERN TX.

...OH/TN VLYS AND THE DEEP SOUTH...
AT LEAST ISOLD SVR TSTMS WILL BE POSSIBLE EARLY IN THE PD ACROSS
PARTS OF THE MID-SOUTH AND LWR MS VLY...ALONG/AHEAD OF THE SFC
LOW/CDFNT. THIS ACTIVITY SHOULD BEGIN TO WEAKEN AND MOVE ENE DURING
THE MORNING. PRE-FRONTAL PCPN-INDUCED MOISTENING AND STRONG LLVL
MOISTURE TRANSPORT WILL LIKELY DESTABILIZE A LARGE REGION AHEAD OF
THE ADVANCING UPR SYSTEM DURING THE AFTN. SFC-BASED TSTMS SHOULD
INITIATE BY MID-AFTN...ESPECIALLY ALONG THE TRACK OF THE STRONGEST
HEIGHT FALLS...NAMELY FROM ALONG THE OH RVR SWD INTO THE TN VLY.
THOUGH THE MID-LVL SYSTEM WILL BE WEAKENING WITH TIME...PRESENCE OF
MODEST WLY MID-LEVEL FLOW ATOP 30 KTS OF WSW H85 FLOW WILL PRODUCE
SUFFICIENT SHEAR FOR ORGANIZED STORMS WITH LARGE HAIL...DMGG WINDS
AND PERHAPS TORNADOES. THESE STORMS WILL MOVE QUICKLY ENE TO THE
CNTRL APLCNS OVERNIGHT...POSSIBLY AS SMALL-SCALE LEWPS/BOWS GIVING
AT LEAST ISOLD SVR WIND PROSPECTS TO THE E OF THE MOUNTAINS INTO SRN
VA.

FARTHER S...LARGER SCALE SUPPORT BEGINS TO WEAKEN THROUGH THE
AFTN...BUT PERSISTENT LLVL MOISTURE FLUX AND RELATIVELY COOL
TEMPERATURES ALOFT WILL FAVOR ISOLD-WDLY SCTD TSTMS ALONG THE
TRAILING PORTION OF THE CDFNT FROM MIDDLE TN SWWD INTO LA. SRN
FRINGES OF STRONGER MID-LVL FLOW WILL EXIST ACROSS THE REGION AND
CONTINUAL FEED OF STEEP LAPSE RATES FROM THE WEST WILL CONTRIBUTE TO
ORGANIZED STORMS WITH LARGE HAIL...DMGG WINDS AND A TORNADO OR TWO.
THIS ACTIVITY WILL ADVANCE QUICKLY ENE TOWARD PARTS OF THE CAROLINAS
OVERNIGHT. IT IS UNCLEAR HOW QUICKLY THE LLVLS WILL MOISTEN THAT
FAR NE...BUT THERE WILL BE AT LEAST AN ISOLD THREAT OF SVR STORMS.

...CSTL TX...
TAIL-END OF THE FRONT AND SEABREEZE WILL LIKELY BE IMPETUS FOR ISOLD
TSTMS AS CAP IS BREACHED ALONG THE SERN TX CST ON FRIDAY AFTN/EARLY
EVE. ROUGHLY 40-45 KTS OF VERTICAL SHEAR AND H5-H7 LAPSE RATES OF
7.5-8 DEG C PER KM WILL RESULT IN VIGOROUS UPDRAFTS/ROTATION WITH
LARGE HAIL THE MOST LIKELY THREAT.

..RACY.. 04/08/2009

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 080556
SWODY2
SPC AC 080555

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1255 AM CDT WED APR 08 2009

VALID 091200Z - 101200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER ERN PARTS OF THE SRN PLNS
EWD INTO THE LWR OH/MS VLYS...

...SYNOPSIS...
UPR LOW OVER CA IS EXPECTED TO BRIEFLY BECOME AN OPEN WAVE AND
TRANSLATE ACROSS THE ROCKIES WEDNESDAY NIGHT. BY THURSDAY
AFTN...ACTIVE SRN STREAM WILL PHASE WITH SRN END OF THE TROUGH AND
CAUSE A SECONDARY CUT-OFF LOW TO EVOLVE OVER KS. THIS FEATURE WILL
TRAVEL INTO THE MID-MS VLY BY 12Z FRIDAY.

AT THE SFC...A LOW OVER NWRN OK EARLY THU WILL INTENSIFY AND TRAVEL
EWD ALONG A WRMFNT ALONG THE KS/OK BORDER DURING THE AFTN AND SRN MO
OVERNIGHT. A STRONG DRYLINE WILL MIX EWD TO THE S OF THE
LOW...REACHING THE I-35 CORRIDOR EARLY THU AFTN...AND INTO ERN
OK/ERN TX BY EVENING. A CDFNT WILL EVENTUALLY OVERTAKE THE DRYLINE
FROM NW-SE...REACHING A SCNTRL MO...CNTRL AR AND SCNTRL TX POSITION
BY DAYBREAK FRIDAY.

...SE KS/E OK/E TX EWD INTO THE MID-SOUTH/LWR OH VLY...
LLVL MOISTURE TRANSPORT WILL BEGIN IN EARNEST WEDNESDAY NIGHT AND
THURSDAY AHEAD OF THE APCHG UPR LOW. SFC DEW POINTS IN THE MID 50S
TO NEAR 60 WILL HAVE BEEN TRANSPORTED AS FAR N AS SRN MO/ERN OK/SERN
KS BY THURSDAY AFTN. STOUT EML STREAMING EWD FROM THE HIGHER SRN
PLNS WILL CAP SFC-BASED PARCELS THROUGH EARLY AFTN. BUT...AS
90-METER HEIGHT FALLS/ABRUPT COOLING ALOFT QUICKLY SPREAD EWD DURING
THE AFTN...THIS CAP WILL ERODE. DEEP DRYLINE CIRCULATION AND
WEAKENING CINH SHOULD BE VERY FAVORABLE FOR SFC-BASED TSTM
INITIATION FROM SERN KS INTO NERN OK BY MID- AFTN...WITH THE
ACTIVITY BACKBUILDING SWD INTO ERN TX.

INITIAL STORM MODE WILL LIKELY BE SUPERCELLULAR WITH THE STORMS
RAPIDLY MOVING ENE ACROSS SRN MO...WRN/CNTRL AR...ERN TX AND NWRN LA
DURING THE LATE AFTN/EARLY EVENING. MID-LVL LAPSE RATES NEAR 8 DEG
C PER KM AND BULK SHEAR IN EXCESS OF 45 KTS ACROSS THE DRYLINE WILL
FAVOR VERY LARGE HAIL. LCL/S WILL INITIALLY BE HIGH OWING TO THE
SOMEWHAT POOR QUALITY THETA-E. BUT...DURING THE EVENING... DEWPOINT
DEPRESSIONS SHOULD BECOME SMALLER AS TEMPERATURES FALL AND SURGE OF
LLVL MOISTURE OCCURS. STORM MODE MAY BECOME LINEAR AS LARGE SCALE
FORCING INCREASES DURING THE EVENING...BUT THREAT WILL EXIST FOR
MORE DISCRETE STORMS TO EXIST ALONG SRN EXTENT/STRONGER CINH.
TORNADIC THREAT WILL BE HIGHEST WITH THESE STORMS ACROSS PARTS OF AR
AND PERHAPS SRN MO DURING THE EVENING. OTHERWISE...DMGG WINDS/HAIL
WILL BE LIKELY AS THE STORMS MOVE EWD.

NRN EDGE OF ACTIVITY WILL BECOME INCREASINGLY ELEVATED ACROSS THE
MID-MS VLY AND N OF THE OH RVR OVERNIGHT THURSDAY. BUT...LARGE HAIL
COULD STILL OCCUR WITH THIS ACTIVITY. SFC-BASED STORMS COULD
MAINTAIN INTENSITY ALONG THE AXIS OF A VEERING LLJ INTO PARTS OF THE
MID-SOUTH.

MEANWHILE...SOME ENSEMBLE MEMBERS INDICATE THAT A POSSIBLE TSTM
CLUSTER...EITHER SEPARATE DEVELOPMENT OR UPSCALE EVOLUTION FROM
DAYTIME ACTIVITY...WILL OCCUR ALONG SRN FRINGES OF THE UPR TROUGH
ACROSS THE LWR MS VLY. THESE STORMS WILL BE EMBEDDED WITHIN 55+ KTS
OF MID-LVL FLOW AND STEEP LAPSE RATES. THUS...A FEW OF THESE STORMS
WILL PRODUCE LARGE HAIL AND DMGG WINDS. ALSO...AS LWR-MID 60S SFC
DEW POINTS MAKE A LATE NIGHT SURGE INTO THIS AREA... TORNADOES
CANNOT BE RULED OUT. BUT...COMPARATIVELY WEAKER LLVL FLOW THIS FAR
SOUTH MAY LESSEN THE TORNADO PROBABILITIES.

..RACY.. 04/08/2009

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 080548
SWODY1
SPC AC 080545

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1245 AM CDT WED APR 08 2009

VALID 081200Z - 091200Z

...NO SVR TSTM AREAS FORECAST...

...EASTERN GREAT BASIN/INTERMOUNTAIN WEST...
EASTWARD ADVANCING UPPER LOW AND ASSOCIATED LEFT EXIT REGION OF
UPPER JET CROSSING THE SOUTHERN ROCKIES...COMBINED WITH OROGRAPHIC
LIFT/MODEST HEATING...WILL FAVOR A BROAD AREA OF ISOLATED TSTM
POTENTIAL TODAY ACROSS THE INTERMOUNTAIN WEST/ROCKIES. SOME SMALL
HAIL COULD OCCUR THIS AFTERNOON IN CLOSE PROXIMITY TO THE UPPER
LOW...MAINLY PORTIONS OF WESTERN/SOUTHERN WY...BUT SEVERE TSTMS ARE
NOT EXPECTED.

...OHIO VALLEY TO CENTRAL/SOUTHERN APPALACHIANS...
CLIPPER-TYPE IMPULSE AMIDST NORTHWESTERLY FLOW ALOFT...IN
CONJUNCTION WITH A WEAK SURFACE LOW/TROUGH...WILL FOCUS THE
DEVELOPMENT OF LOW-TOPPED CONVECTION LATE THIS
AFTERNOON/EVENING...LARGELY CENTERED ON EASTERN KY. AS SUGGESTED BY
00Z GFS/NAM FORECAST SOUNDINGS...MODEST BOUNDARY LAYER HEATING/COLD
THERMAL PROFILES ALOFT SHOULD FAVOR CONVECTION OF SUFFICIENT DEPTH
FOR CHARGE SEPARATION AND THE POSSIBILITY OF ISOLATED TSTMS.

..GUYER/SMITH.. 04/08/2009

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KSGX [080457]: Preliminary Local Storm Report

NWUS56 KSGX 080457
LSRSGX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
957 PM PDT TUE APR 07 2009

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

0458 PM NON-TSTM WND GST 7 SE LUCERNE VALLEY 34.37N 116.87W
04/07/2009 M61 MPH SAN BERNARDINO CA TRAINED SPOTTER

PEAK GUST 61 MPH, NO DAMAGE REPORTED.

&&

$$

BM

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