KBYZ [200124]: Preliminary Local Storm Report

NWUS55 KBYZ 200124
LSRBYZ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
724 PM MDT SAT MAY 19 2007

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

0719 PM HAIL 14 SE ROUNDUP 46.36N 108.27W
05/19/2007 E1.25 INCH MUSSELSHELL MT TRAINED SPOTTER

QUARTER TO HALF DOLLAR SIZE HAIL.

&&

$$

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KLBF [200119]: Preliminary Local Storm Report

NWUS53 KLBF 200119
LSRLBF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
818 PM CDT SAT MAY 19 2007

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

0808 PM HAIL 18 W TRYON 41.56N 101.29W
05/19/2007 E0.75 INCH MCPHERSON NE PUBLIC

&&

$$

MASEK

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KBYZ [200102]: Preliminary Local Storm Report

NWUS55 KBYZ 200102
LSRBYZ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
702 PM MDT SAT MAY 19 2007

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

0622 PM HAIL 1W COLSTRIP 45.88N 106.64W
05/19/2007 E1.00 INCH ROSEBUD MT TRAINED SPOTTER

0622 PM TSTM WND GST 1W COLSTRIP 45.88N 106.64W
05/19/2007 M63 MPH ROSEBUD MT TRAINED SPOTTER

0656 PM HAIL 10 SE ROUNDUP 46.35N 108.44W
05/19/2007 E1.00 INCH MUSSELSHELL MT TRAINED SPOTTER

&&

$$

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 200100
SWODY1
SPC AC 200058

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0758 PM CDT SAT MAY 19 2007

VALID 200100Z - 201200Z

..THERE IS A SLGT RISK OF SVR TSTMS TONIGHT OVER PORTIONS OF THE
NRN HIGH PLAINS...

..NRN HIGH PLAINS...

LATEST MESOANALYSIS INDICATES LOW-LEVEL BAROCLINIC ZONE STRETCHING
FROM SURFACE LOW N OF BZN GENERALLY EWD THROUGH CNTRL MT AND THEN
MORE SHARPLY SEWD FROM SERN MT INTO SWRN SD OR THE NWRN NEB PNHDL.
AS OF 0030Z...TSTMS WERE WIDELY SCATTERED FROM VICINITY OF THIS
SURFACE LOW EWD TO JUST W OF MLS. MUCH OF THIS ACTIVITY HAS
STRUGGLED TO SUSTAIN ITSELF SO FAR THIS AFTERNOON AND
EVENING...THOUGH SOME INTENSIFICATION HAS RECENTLY OCCURRED WITH
LARGER COMPLEX W OF MLS.

00Z REGIONAL SOUNDINGS AND RUC OBJECTIVE FIELDS INDICATE THE
PRESENCE OF RELATIVELY STEEP LOW TO MID-LEVEL LAPSE RATES WHICH WERE
CONTRIBUTING TO POCKETS OF MODERATE INSTABILITY WITH MLCAPES OF
1000-1500 J/KG. MOREOVER...THE LEADING EDGE OF STRONG MID-LEVEL JET
ATTENDANT TO SHORT WAVE TROUGH OVER THE PACIFIC NW IS BEGINNING TO
SPREAD E OF THE CONTINENTAL DIVIDE...ATOP LOW-LEVEL ELY FLOW TO THE
N OF FRONTAL ZONE. RESULTING DEEP LAYER VERTICAL SHEAR IS
SUFFICIENT /I.E. EFFECTIVE BULK SHEAR OF 45-55 KT/ TO SUPPORT
SUPERCELLS AND/OR BOWING STRUCTURES CAPABLE OF DAMAGING WINDS AND
LARGE HAIL.

STORMS MAY TEND TO MERGE INTO LARGER CLUSTERS LATER THIS EVENING
WITH THE DAMAGING WIND AND HAIL THREAT SPREADING EWD TOWARD THE WRN
DAKOTAS.

..CNTRL HIGH PLAINS...

CLUSTERS OF TSTMS ARE ONGOING THIS EVENING OVER THE PLAINS OF ERN CO
NEWD THROUGH CNTRL NEB TO SERN SD ALONG AND S OF ERN EXTENSION OF
NRN HIGH PLAINS FRONTAL ZONE. 00Z SOUNDING FROM LBF ALSO SHOWED
STEEP LOW/MID-LEVEL LAPSE RATES AND MODEST BOUNDARY LAYER MOISTURE
WHICH WERE CONTRIBUTING TO MLCAPES OF AROUND 1500 J/KG.
HOWEVER...THIS REGION IS DISPLACED WELL TO THE SE OF THE STRONGER
MID-LEVEL FLOW CRESTING THE NRN ROCKIES WITH DEEP LAYER VERTICAL
SHEAR OF GENERALLY 20-25 KT.

GIVEN THE MARGINAL VERTICAL SHEAR AND ABSENCE OF ANY APPRECIABLE
LARGE-SCALE FORCING FOR ASCENT...EXPECT ONGOING STORMS TO BEGIN TO
WEAKEN AFTER 03-04Z AS BOUNDARY LAYER AND LAPSE RATES WEAKEN.
HOWEVER PRIOR TO THIS...THE MORE INTENSE STORMS WILL REMAIN CAPABLE
OF ISOLATED STRONG WIND GUSTS AND SOME SEVERE HAIL.

.MEAD.. 05/20/2007

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KLBF [200052]: Preliminary Local Storm Report

NWUS53 KLBF 200052
LSRLBF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
752 PM CDT SAT MAY 19 2007

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

0702 PM HAIL 17 S SENECA 41.80N 100.83W
05/19/2007 E0.88 INCH THOMAS NE PUBLIC

&&

$$

HENDERSON

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KMPX [200046]: Preliminary Local Storm Report

NWUS53 KMPX 200046
LSRMPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
745 PM CDT SAT MAY 19 2007

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

0550 PM HAIL MAPLETON 43.93N 93.95W
05/19/2007 E0.88 INCH BLUE EARTH MN LAW ENFORCEMENT

HAIL COVERED GROUND

&&

$$

LRS

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KMPX [200045]: Preliminary Local Storm Report

NWUS53 KMPX 200045
LSRMPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
744 PM CDT SAT MAY 19 2007

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

0710 PM FLASH FLOOD MAPLETON 43.93N 93.95W
05/19/2007 BLUE EARTH MN LAW ENFORCEMENT

MULTIPLE SIDE STREETS FLOODED..A FEW STALLED CARS.
DRAINAGE DITCFHES OUTSIDE TOWN OVER BANKS

&&

$$

LRS

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KLBF [200044]: Preliminary Local Storm Report

NWUS53 KLBF 200044
LSRLBF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
744 PM CDT SAT MAY 19 2007

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

0730 PM HAIL 10 N TRYON 41.70N 100.94W
05/19/2007 E0.88 INCH MCPHERSON NE PUBLIC

&&

$$

MASEK

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KMPX [200043]: Preliminary Local Storm Report

NWUS53 KMPX 200043
LSRMPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
743 PM CDT SAT MAY 19 2007

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

0714 PM HEAVY RAIN MAPLETON 43.93N 93.95W
05/19/2007 E0.00 INCH BLUE EARTH MN TRAINED SPOTTER

3.1 INCHES OF RAIN SINCE LATE AFTERNOON

&&

$$

LRS

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KFSD [200039]: Preliminary Local Storm Report

NWUS53 KFSD 200039
LSRFSD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
739 PM CDT SAT MAY 19 2007

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

0725 PM HAIL 11 S LENNOX 43.19N 96.90W
05/19/2007 E0.75 INCH LINCOLN SD PUBLIC

&&

$$

JH

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KFGF [200038]: Preliminary Local Storm Report

NWUS53 KFGF 200038
LSRFGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
738 PM CDT SAT MAY 19 2007

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

1133 PM TSTM WND DMG 3 N RANUM 47.50N 96.13W
05/18/2007 NORMAN MN TRAINED SPOTTER

WINDS ESTIMATED AT 60 MPH

&&

$$

DKELLENB

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KGLD [200033]: Preliminary Local Storm Report

NWUS53 KGLD 200033
LSRGLD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
633 PM MDT SAT MAY 19 2007

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

0632 PM HAIL WRAY 40.08N 102.23W
05/19/2007 E0.88 INCH YUMA CO TRAINED SPOTTER

&&

$$

BLM

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KFGF [200029]: Preliminary Local Storm Report...summary

NWUS53 KFGF 200029
LSRFGF

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
729 PM CDT SAT MAY 19 2007

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

0519 PM HAIL 9 ENE JESSIE 47.59N 98.06W
05/18/2007 E1.75 INCH GRIGGS ND PUBLIC

0545 PM HAIL 1 S WYLIE 47.95N 96.35W
05/18/2007 E0.88 INCH RED LAKE MN PUBLIC

0550 PM HAIL 10 WSW HAZEL 47.96N 96.31W
05/18/2007 E0.75 INCH PENNINGTON MN PUBLIC

0555 PM HAIL RED LAKE FALLS 47.89N 96.27W
05/18/2007 E0.88 INCH RED LAKE MN TRAINED SPOTTER

0600 PM HAIL 2 W SHARON 47.60N 97.94W
05/18/2007 E1.75 INCH STEELE ND PUBLIC

0615 PM HAIL 3 N MENTOR 47.74N 96.14W
05/18/2007 E0.75 INCH POLK MN PUBLIC

0625 PM HAIL 6 SE COOPERSTOWN 47.38N 98.03W
05/18/2007 E1.25 INCH GRIGGS ND TRAINED SPOTTER

0630 PM HAIL 7 E HANNAFORD 47.31N 98.04W
05/18/2007 E1.75 INCH GRIGGS ND PUBLIC

0630 PM HAIL 6 N LUVERNE 47.34N 97.93W
05/18/2007 E0.75 INCH STEELE ND PUBLIC

0639 PM HAIL ERSKINE 47.66N 96.01W
05/18/2007 E1.00 INCH POLK MN PUBLIC

0652 PM TORNADO 3 E WALUM 47.27N 98.13W
05/18/2007 GRIGGS ND TRAINED SPOTTER

TORNADO ON THE GROUND 8N OF LUVERNE ON GRIGGS SIDE OF THE
COUNTY LINE REPORTED BY TRAINED SPOTTER AT 652 PM. REPORT
RELAYED BY STEELE COUNTY LAW ENFORECEMENT.

0700 PM HAIL 3 N LUVERNE 47.29N 97.93W
05/18/2007 E0.88 INCH STEELE ND PUBLIC

0700 PM HAIL 2 W SIBLEY 47.22N 98.01W
05/18/2007 M1.75 INCH BARNES ND PUBLIC

0700 PM TORNADO 2 W SIBLEY 47.22N 98.01W
05/18/2007 BARNES ND PUBLIC

3 BRIEF DUST SWIRLS WERE NOTED

0812 PM HAIL 3 N MOORHEAD 46.91N 96.76W
05/18/2007 E1.00 INCH CLAY MN TRAINED SPOTTER

0813 PM HAIL MINNEWAUKAN 48.07N 99.25W
05/18/2007 E0.75 INCH BENSON ND TRAINED SPOTTER

0820 PM HAIL MOORHEAD 46.86N 96.76W
05/18/2007 M1.50 INCH CLAY MN CO-OP OBSERVER

0820 PM HAIL 2 E SIBLEY 47.22N 97.92W
05/18/2007 E1.75 INCH BARNES ND LAW ENFORCEMENT

0838 PM HAIL DILWORTH 46.88N 96.70W
05/18/2007 E1.00 INCH CLAY MN PUBLIC

0840 PM HAIL 1 NE DILWORTH 46.89N 96.68W
05/18/2007 E1.75 INCH CLAY MN TRAINED SPOTTER

0850 PM TORNADO 3 NE VALLEY CITY 46.95N 97.96W
05/18/2007 BARNES ND TRAINED SPOTTER

TRAINED SPOTTER LOCATED AT 117 AVE SE AND 31ST ST SE 3
MILES NORTH OF VALLEY CITY REPORTED A BRIEF TOUCHDOWN IN
A FIELD 3.5 MILES NE OF VALLEY CITY.

0850 PM HAIL DEVILS LAKE 48.11N 98.87W
05/18/2007 E0.75 INCH RAMSEY ND TRAINED SPOTTER

0855 PM HAIL MOORHEAD 46.86N 96.76W
05/18/2007 E0.88 INCH CLAY MN PUBLIC

0856 PM HAIL DEVILS LAKE 48.11N 98.87W
05/18/2007 E0.88 INCH RAMSEY ND LAW ENFORCEMENT

DIME TO NICKEL SIZE HAIL REPORTED.

0903 PM HAIL SABIN 46.78N 96.65W
05/18/2007 E1.00 INCH CLAY MN LAW ENFORCEMENT

0904 PM HAIL FARGO 46.88N 96.82W
05/18/2007 E0.75 INCH CASS ND TRAINED SPOTTER

0909 PM HAIL FARGO 46.88N 96.82W
05/18/2007 E0.88 INCH CASS ND TRAINED SPOTTER

0914 PM HAIL 2 E ORISKA 46.93N 97.75W
05/18/2007 E1.00 INCH BARNES ND TRAINED SPOTTER

0919 PM FLASH FLOOD MOORHEAD 46.86N 96.76W
05/18/2007 CLAY MN PUBLIC

STREETS IN MOORHEARD FLOODING OVER THE CURBS. DITCHES
FILLING UP.

0920 PM HAIL 4 E ORISKA 46.93N 97.70W
05/18/2007 E1.00 INCH BARNES ND PUBLIC

0930 PM FLASH FLOOD FARGO 46.88N 96.82W
05/18/2007 CASS ND LAW ENFORCEMENT

STREET FLOODING.

0944 PM HAIL BUFFALO 46.92N 97.55W
05/18/2007 E1.00 INCH CASS ND TRAINED SPOTTER

0948 PM HAIL MOORHEAD 46.86N 96.76W
05/18/2007 E1.00 INCH CLAY MN PUBLIC

1020 PM HAIL CASSELTON 46.90N 97.21W
05/18/2007 E1.75 INCH CASS ND PUBLIC

1121 PM HAIL 11 S HILLSBORO 47.24N 97.06W
05/18/2007 E0.75 INCH TRAILL ND PUBLIC

1122 PM HAIL 11 S HILLSBORO 47.24N 97.06W
05/18/2007 E0.75 INCH TRAILL ND PUBLIC

OBSERVED ALONG INTERSTATE 29.

1230 AM HAIL 4 NW LITCHVILLE 46.70N 98.25W
05/19/2007 E0.75 INCH BARNES ND PUBLIC

&&

$$

DKELLENB

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KTFX [200026]: Preliminary Local Storm Report...corrected

NWUS55 KTFX 200026
LSRTFX

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GREAT FALLS MT
625 PM MDT SAT MAY 19 2007

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

0448 PM HAIL 5 E DENTON 47.32N 109.84W
05/19/2007 E1.75 INCH FERGUS MT PUBLIC

&&

$$

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KTFX [200025]: Preliminary Local Storm Report

NWUS55 KTFX 200025
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
625 PM MDT SAT MAY 19 2007

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

0448 PM HAIL DENTON 47.32N 109.95W
05/19/2007 E1.75 INCH FERGUS MT PUBLIC

&&

$$

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KGLD [200020]: Preliminary Local Storm Report

NWUS53 KGLD 200020
LSRGLD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
620 PM MDT SAT MAY 19 2007

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

0550 PM HAIL 3 SE FLAGLER 39.26N 103.03W
05/19/2007 E0.75 INCH KIT CARSON CO PUBLIC

&&

$$

JDK

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KFSD [200019]: Preliminary Local Storm Report

NWUS53 KFSD 200019
LSRFSD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
719 PM CDT SAT MAY 19 2007

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

0555 PM HAIL 4 S MAGNOLIA 43.59N 96.07W
05/19/2007 E0.88 INCH ROCK MN PUBLIC

HAIL LASTED FOR 10 MINUTES ENDING AROUND 555 PM CDT.

0555 PM HAIL 4 SSE MAGNOLIA 43.59N 96.04W
05/19/2007 E0.88 INCH NOBLES MN PUBLIC

0620 PM HAIL 3 S AVON 42.96N 98.06W
05/19/2007 E0.75 INCH BON HOMME SD PUBLIC

&&

$$

JH

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KGLD [200015]: Preliminary Local Storm Report

NWUS53 KGLD 200015
LSRGLD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
614 PM MDT SAT MAY 19 2007

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

0612 PM HAIL WRAY 40.08N 102.23W
05/19/2007 M0.75 INCH YUMA CO CO-OP OBSERVER

3/4-INCH HAIL COVERING THE GROUND

&&

$$

BLM

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KFGF [200006]: Preliminary Local Storm Report

NWUS53 KFGF 200006
LSRFGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
706 PM CDT SAT MAY 19 2007

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

0700 PM HAIL 3 N LUVERNE 47.29N 97.93W
05/18/2007 E0.88 INCH STEELE ND PUBLIC

&&

$$

DKELLENB

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KMPX [200002]: Preliminary Local Storm Report

NWUS53 KMPX 200002
LSRMPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
702 PM CDT SAT MAY 19 2007

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

0643 PM HEAVY RAIN MAPLETON 43.93N 93.95W
05/19/2007 E0.00 INCH BLUE EARTH MN LAW ENFORCEMENT

MAPLETON POLICE REPORT SEVERE STREET FLOODING THROUGHOUT
TOWN

&&

$$

LRS

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KFGF [200001]: Preliminary Local Storm Report

NWUS53 KFGF 200001
LSRFGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
701 PM CDT SAT MAY 19 2007

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

0700 PM HAIL 2 W SIBLEY 47.22N 98.01W
05/18/2007 M1.75 INCH BARNES ND PUBLIC

&&

$$

JKAISER

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KFGF [192359]: Preliminary Local Storm Report

NWUS53 KFGF 192359
LSRFGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
659 PM CDT SAT MAY 19 2007

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

0700 PM TORNADO 2 W SIBLEY 47.22N 98.01W
05/18/2007 BARNES ND PUBLIC

3 BRIEF DUST SWIRLS WERE NOTED

&&

$$

JKAISER

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KMAF [192356]: Preliminary Local Storm Report

NWUS54 KMAF 192356
LSRMAF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
656 PM CDT SAT MAY 19 2007

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

0650 PM HAIL 5 W MARFA 30.31N 104.11W
05/19/2007 E1.75 INCH PRESIDIO TX LAW ENFORCEMENT

10 MINUTE DURATION, STARTED AT 640, ON US90

&&

$$

JGUDMEST

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KFGF [192346]: Preliminary Local Storm Report

NWUS53 KFGF 192346
LSRFGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
645 PM CDT SAT MAY 19 2007

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

1230 AM HAIL 4 NW LITCHVILLE 46.70N 98.25W
05/19/2007 E0.75 INCH BARNES ND PUBLIC

&&

$$

JKAISER

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MESO: Mesoscale Discussion 0838

ACUS11 KWNS 192343
SWOMCD
SPC MCD 192343
MTZ000-WYZ000-200115-

MESOSCALE DISCUSSION 0838
NWS STORM PREDICTION CENTER NORMAN OK
0643 PM CDT SAT MAY 19 2007

AREAS AFFECTED...CNTRL THROUGH SERN MT

CONCERNING...SEVERE THUNDERSTORM WATCH 280...

VALID 192343Z - 200115Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 280
CONTINUES.

THREAT FOR ISOLATED DAMAGING WIND AND HAIL WILL PERSIST NEXT FEW
HOURS ACROSS CNTRL THROUGH SERN MT. SEVERE THUNDERSTORM WATCH HAS
BEEN EXTENDED FARTHER EAST INTO SERN MT.

AXIS OF SURFACE DEWPOINTS IN THE LOWER 50S EXTENDS FROM SE THROUGH
CNTRL MT ON THE N SIDE OF A STATIONARY FRONT. MLCAPE AROUND 1500
J/KG EXISTS ALONG THIS THETA-E AXIS. STORMS THAT DEVELOPED OVER THE
HIGHER TERRAIN HAVE GRADUALLY STRENGTHENED AS THEY SPREAD NEWD INTO
STRONGER INSTABILITY ACROSS CNTRL AND SERN MT. WV IMAGERY SUGGESTS
ASCENT ASSOCIATED WITH A NEWD ADVANCING SHORTWAVE TROUGH IS ALSO
SPREADING NEWD THROUGH THE AREA. THIS ALONG WITH HEATING OVER THE
HIGHER TERRAIN WILL CONTINUE TO SUPPORT ADDITIONAL UPSTREAM
DEVELOPMENT NEXT FEW HOURS. DEEP LAYER SHEAR OF 40 TO 50 KT IS
FAVORABLE FOR STORMS TO DEVELOP SUPERCELL STRUCTURES. SIZE OF LOW
LEVEL HODOGRAPHS WILL ALSO INCREASE ACROSS ERN MT AS THE LOW LEVEL
JET STRENGTHENS THIS EVENING. HOWEVER...HIGH BASED NATURE OF THE
STORMS SUGGESTS LARGE HAIL AND DAMAGING WIND SHOULD REMAIN THE
PRIMARY THREATS. STORMS MOVING THROUGH CNTRL MT MAY EVENTUALLY
WEAKEN AS THEY APPROACH NERN MT WHERE THE ATMOSPHERE IS MORE STABLE.
SOME DESTABILIZATION ABOVE THE SURFACE MAY OCCUR IN NERN MT LATER
TONIGHT AS THE LOW LEVEL JET STRENGTHENS...BUT PRIMARY SEVERE THREAT
SHOULD REMAIN FROM CNTRL THROUGH SERN MT NEXT FEW HOURS.

.DIAL.. 05/19/2007

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

ATTN...WFO...UNR...BYZ...GGW...TFX...

44920477 45110788 45881067 47501086 47510879 45910428

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KMPX [192328]: Preliminary Local Storm Report

NWUS53 KMPX 192328
LSRMPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
627 PM CDT SAT MAY 19 2007

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

0600 PM HAIL SW VERNON CENTER 43.96N 94.17W
05/19/2007 E0.88 INCH BLUE EARTH MN PUBLIC

&&

$$

LRS

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KMPX [192326]: Preliminary Local Storm Report

NWUS53 KMPX 192326
LSRMPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
626 PM CDT SAT MAY 19 2007

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

0556 PM HAIL 1 SW MAPLETON 43.92N 93.97W
05/19/2007 E0.75 INCH BLUE EARTH MN TRAINED SPOTTER

&&

$$

LRS

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KUNR [192308]: Preliminary Local Storm Report

NWUS53 KUNR 192308
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
507 PM MDT SAT MAY 19 2007

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

0430 PM HAIL PRINGLE 43.61N 103.59W
05/19/2007 E1.25 INCH CUSTER SD PUBLIC

HAIL LASTED FROM 430 PM TO 455 PM.

&&

$$

WETENKAMP

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KLBF [192250]: Preliminary Local Storm Report

NWUS53 KLBF 192250
LSRLBF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
550 PM CDT SAT MAY 19 2007

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

0530 PM HAIL 5 NW PURDUM 42.12N 100.33W
05/19/2007 E1.00 INCH CHERRY NE PUBLIC

&&

$$

HENDERSON

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KFGF [192227]: Preliminary Local Storm Report

NWUS53 KFGF 192227
LSRFGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
527 PM CDT SAT MAY 19 2007

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

1020 PM HAIL CASSELTON 46.90N 97.21W
05/18/2007 E1.75 INCH CASS ND PUBLIC

&&

$$

DKELLENB

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KUNR [192212]: Preliminary Local Storm Report

NWUS53 KUNR 192212
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
412 PM MDT SAT MAY 19 2007

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

0350 PM HAIL 5 W CUSTER 43.77N 103.70W
05/19/2007 E1.00 INCH CUSTER SD PUBLIC

&&

$$

WETENKAMP

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MESO: Mesoscale Discussion 0837

ACUS11 KWNS 192103
SWOMCD
SPC MCD 192102
NEZ000-192330-

MESOSCALE DISCUSSION 0837
NWS STORM PREDICTION CENTER NORMAN OK
0402 PM CDT SAT MAY 19 2007

AREAS AFFECTED...WEST CENTRAL NEBRASKA

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 192102Z - 192330Z

STORMS WILL INCREASE IN INTENSITY AND COVERAGE WITH THE MAIN THREAT
SEVERE HAIL. STRONG WINDS GUSTS WILL BECOME INCREASINGLY LIKELY AS
OUTFLOW POOL GROWS AND STORMS PROPAGATE SW.

VISIBLE IMAGERY SHOWS TCU AND THUNDERSTORMS DEVELOPING WITHIN
PRE-FRONTAL TROUGH OVER NRN NEB. STEEP LOW TO MID LEVEL LAPSE RATES
IS RESULTING IN MODERATE INSTABILITY...BUT SHEAR IS QUITE WEAK.
OBSERVED AND FORECAST HODOGRAPHS INDICATE MOST LIKELY STORM MOTIONS
WILL BE SLOWLY IN A SWLY DIRECTION. A FEW LONGER LIVED MULTICELLULAR
STORMS MAY PRODUCE SEVERE HAIL AT TIMES. RELATIVELY WARM/DRY
BOUNDARY LAYER WILL ALSO ENHANCE EVAPORATION WITH LOCALLY STRONG
DOWNDRAFTS AS WELL.

.JEWELL.. 05/19/2007

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

ATTN...WFO...LBF...CYS...

42070238 42550091 42709917 42499909 42209922 41639975
41010102 41090209 41310250 41490277 41760273

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WATCHES: Severe Thunderstorm Watch Number 280

WWUS20 KWNS 192038
SEL0
SPC WW 192038
MTZ000-WYZ000-200400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 280
NWS STORM PREDICTION CENTER NORMAN OK
240 PM MDT SAT MAY 19 2007

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

CENTRAL MONTANA
NORTH CENTRAL WYOMING

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 240 PM UNTIL
1000 PM MDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTH
NORTHWEST OF BOZEMAN MONTANA TO 105 MILES EAST NORTHEAST OF
BILLINGS MONTANA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

DISCUSSION...SCATTERED THUNDERSTORMS ARE BEGINNING TO FORM OVER THE
MOUNTAINS OF SOUTHWEST MT. STORMS ARE EXPECTED TO INTENSIFY AS THEY
SPREAD EASTWARD INTO LOW LEVEL MOISTURE/INSTABILITY AXIS WHICH
EXTENDS FROM BTM - BIL - SOUTHEAST MT. FORECAST SOUNDINGS SUGGEST
THE POTENTIAL FOR HIGH-BASED SUPERCELLS CAPABLE OF LARGE HAIL AND
DAMAGING WINDS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 24035.

..HART

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KMFL [192009]: Preliminary Local Storm Report

NWUS52 KMFL 192009
LSRMFL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
408 PM EDT SAT MAY 19 2007

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

0402 PM HAIL 1 S OPA-LOCKA 25.89N 80.26W
05/19/2007 E0.75 INCH MIAMI-DADE FL PUBLIC

&&

$$

STRASSBERG

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MESO: Mesoscale Discussion 0836

ACUS11 KWNS 192002
SWOMCD
SPC MCD 192001
TXZ000-192100-

MESOSCALE DISCUSSION 0836
NWS STORM PREDICTION CENTER NORMAN OK
0301 PM CDT SAT MAY 19 2007

AREAS AFFECTED...SWRN TX

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 192001Z - 192100Z

ISOLATED SEVERE STORMS ARE LIKELY ACROSS WRN TX WITH THE MAIN THREAT
LARGE/DAMAGING HAIL.

VISIBLE IMAGERY SHOWS HEATING CONTINUES OVER SWRN TX WITH DEWPOINTS
HOLDING IN THE MID 50S. GIVEN RELATIVELY COOL AIR ALOFT...MODERATE
INSTABILITY HAS DEVELOPED WITH MLCAPE OF 1000-1500 J/KG. SELY LOW
LEVEL FLOW...ALBEIT WEAK...IS CONTRIBUTING TO EFFECTIVE BULK SHEAR
VECTOR MAGNITUDES ON THE ORDER OF 30 KTS. THIS MAY BE SUFFICIENT FOR
A COUPLE LONG LIVED SEVERE CELLS...POSSIBLY WITH SUPERCELL
CHARACTERISTICS. RADAR AS OF 20Z ALREADY SHOWED SEVERE CELLS JUST
ACROSS THE RIO GRANDE W OF HUDSPETH COUNTY. MEAN SELY STORM MOTIONS
COULD KEEP THESE STORMS W OF THE BORDER...HOWEVER...ONLY SLIGHT EWD
UPDRAFT PROPAGATION WOULD BRING THESE CELLS INTO THE U.S. OTHER
CELLS MAY BECOME SEVERE NEAR THE DAVIS MTNS.

.JEWELL.. 05/19/2007

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

ATTN...WFO...MAF...EPZ...

31210591 31440593 31900479 31940355 31700338 30660285
29690261 28830314 29740465 30260481 30580497 31030571

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 191956
SWODY1
SPC AC 191954

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0254 PM CDT SAT MAY 19 2007

VALID 192000Z - 201200Z

..THERE IS A SLGT RISK OF SVR TSTMS ACROSS CENTRAL/EASTERN MT AND
NORTHEAST WY...

..MT...
SWLY MID LEVEL FLOW EXTENDING FROM ID INTO WRN/CENTRAL MT WILL
CONTINUE TO STRENGTHEN FROM 40-50 KT THROUGH TONIGHT AS THE UPSTREAM
MID/UPPER LEVEL TROUGH SHIFTS INLAND ACROSS THE PACIFIC NW. WATER
VAPOR IMAGERY SHOWED THE LEADING EDGE OF A SHORT WAVE TROUGH
TRACKING NEWD ACROSS WRN MT/SRN ALBERTA EARLY THIS AFTERNOON.
ASCENT WITH THIS FEATURE LIKELY AIDED TSTMS THAT OCCURRED OVER WRN
MT THIS MORNING...WITH MORE RECENT ACTIVITY NOW INTO SRN ALBERTA.

THE SRN EXTENT OF THIS IMPULSE IS EXPECTED TO SPREAD NEWD INTO MT
THIS AFTERNOON AND TONIGHT PROVIDING ASCENT FOR UPWARD VERTICAL
MOTION AND ADDITIONAL TSTMS. SATELLITE IMAGERY/LIGHTNING DATA
INDICATED THAT THIS ASCENT COMBINED WITH SURFACE HEATING IS AIDING
AN INCREASE IN TSTMS ACROSS NWRN WY...WITH ADDITIONAL DEVELOPMENT
OCCURRING INTO SWRN MT. EARLY AFTERNOON SURFACE ANALYSIS SHOWED A
BOUNDARY EXTENDING FROM SWRN SD WNWWD THROUGH SRN MT AND THEN NWWD
INTO WRN MT. A NARROW AXIS OF SURFACE DEWPOINTS IN THE LOWER 50S
ALONG THIS BOUNDARY AND BENEATH STEEP LAPSE RATES ARE RESULTING IN
MLCAPES AROUND 1000 J/KG...WITH ADDITIONAL SURFACE HEATING AIDING IN
FURTHER DESTABILIZATION. ELY SURFACE WINDS ACROSS MT BENEATH
INCREASING SWLY MID LEVEL FLOW WILL CONTINUE TO SUPPORT EFFECTIVE
BULK SHEAR VALUES OF 40-50 KT FOR SUPERCELLS. STORMS SHOULD
INCREASE IN INTENSITY AS THEY MOVE OFF THE HIGHER TERRAIN INTO THE
INSTABILITY AXIS. MAIN THREATS ARE EXPECTED TO BE HAIL AND DAMAGING
WIND GUSTS.

TSTMS ARE EXPECTED TO SPREAD EWD INTO ERN MT/NERN WY THIS EVENING
AND REACH WRN ND/NWRN SD LATER IN THE FORECAST PERIOD. THIS
ACTIVITY MAY EVOLVE INTO AN MCS GIVEN INCREASING LOW LEVEL WAA
EXPECTED TONIGHT ALONG THE NOSE OF STRENGTHENING/VEERING LLJ INTO
THE NRN HIGH PLAINS.

..WI/MN/SD/NEB...
SURFACE FRONT EXTENDED FROM NERN WI SWWD THROUGH MSP TO SERN SD AND
INTO THE NEB PANHANDLE...WITH THE ERN EXTENT EXPECTED TO CONTINUE
MOVING SWD AND REACHING SRN WI TO THE MN/IA BORDER BY 12Z SUNDAY.
AIR MASS ALONG THE PORTION OF THIS BOUNDARY IN MN TO SD AND NEB HAS
BECOME MODERATELY UNSTABLE. ALTHOUGH POTENTIAL FOR TSTM DEVELOPMENT
APPEARS LOW GIVEN RIDGING ALOFT...THE MODERATE INSTABILITY AND STEEP
LOW LEVEL LAPSE RATES WILL SUPPORT AN ISOLATED STRONG TO SEVERE
STORM WITH HAIL AND GUSTY WINDS.

..SW TX...
A MODERATELY UNSTABLE AIR MASS HAS DEVELOPED FROM CHIHUAHUA MEXICO
NWD THROUGH FAR W TX INTO ADJACENT PARTS OF SRN NM. GREATEST
POTENTIAL FOR ORGANIZED STORMS SHOULD BE CONFINED TO THE TX BIG BEND
REGION WHERE EFFECTIVE BULK SHEAR IS 30-40 KT. HOWEVER... MODELS
SUGGEST HIGHER LIKELIHOOD FOR TSTM DEVELOPMENT NORTH OF THE TX BIG
BEND AS CONFIRMED BY CURRENT LIGHTNING DATA AND REGIONAL RADARS.
ALTHOUGH DEEP LAYER SHEAR IS RATHER WEAK WITH NWD EXTENT...MODERATE
INSTABILITY AND STEEP LAPSE RATES SUPPORT MAINLY A THREAT FOR
ISOLATED HAIL.

..EXTREME SRN FL PENINSULA...
A FEW TSTMS HAVE DEVELOPED SO FAR ALONG THE SEA BREEZE BOUNDARY IN
BROWARD COUNTY. DIURNAL TSTM THREAT WILL CONTINUE ACROSS THE SRN FL
PENINSULA WHERE THE AIR MASS HAS BECOME MODERATELY UNSTABLE. ELY
LOW LEVEL WINDS LOCATED BENEATH WLY MID LEVEL WINDS SHOULD MAINTAIN
EFFECTIVE BULK SHEAR VALUES TO AROUND 30 KT...SUPPORTING AN ISOLATED
THREAT FOR STRONG GUSTY WINDS AND/OR HAIL WITH THE STRONGEST CORES.

.PETERS.. 05/19/2007

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KMFL [191956]: Preliminary Local Storm Report

NWUS52 KMFL 191956
LSRMFL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
356 PM EDT SAT MAY 19 2007

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

0355 PM HAIL MIAMI LAKES 25.91N 80.31W
05/19/2007 E0.50 INCH MIAMI-DADE FL PUBLIC

ALSO STRONG WINDS AT TIME OF REPORT

&&

$$

LOCKE

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KMFL [191955]: Preliminary Local Storm Report

NWUS52 KMFL 191955
LSRMFL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
355 PM EDT SAT MAY 19 2007

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

0348 PM HAIL HIALEAH GARDENS 25.87N 80.34W
05/19/2007 E1.75 INCH MIAMI-DADE FL PUBLIC

AND FUNNEL CLOUDS NOT TOUCHING THE GROUND OCCURRING AT
TIME OF REPORT.

&&

$$

LOCKE

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KMFL [191953]: Preliminary Local Storm Report

NWUS52 KMFL 191953
LSRMFL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
353 PM EDT SAT MAY 19 2007

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

0345 PM HAIL 1 NW OPA-LOCKA 25.91N 80.27W
05/19/2007 E1.00 INCH MIAMI-DADE FL PUBLIC

REPORTED NEAR INTERSECTION OF NW 67TH AVE AND MIAMI LAKES
DRIVE.

&&

$$

STRASSBERG

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KFGF [191944]: Preliminary Local Storm Report

NWUS53 KFGF 191944
LSRFGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
243 PM CDT SAT MAY 19 2007

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

0920 PM HAIL 4 E ORISKA 46.93N 97.70W
05/18/2007 E1.00 INCH BARNES ND PUBLIC

&&

$$

KRAMLICH

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MESO: Mesoscale Discussion 0835

ACUS11 KWNS 191942
SWOMCD
SPC MCD 191941
MTZ000-WYZ000-192045-

MESOSCALE DISCUSSION 0835
NWS STORM PREDICTION CENTER NORMAN OK
0241 PM CDT SAT MAY 19 2007

AREAS AFFECTED...PORTIONS SWRN/CENTRAL MT...N-CENTRAL/NERN WY.

CONCERNING...SEVERE POTENTIAL...WATCH LIKELY

VALID 191941Z - 192045Z

WW MAY BE REQUIRED PORTIONS MT. TSTMS ARE FCST TO INCREASE IN
COVERAGE/INTENSITY ACROSS HIGHER TERRAIN OF SWRN MT DURING NEXT FEW
HOURS AND MOVE NEWD TOWARD BIL-LWT-GTF AREA..WITH POTENTIAL FOR
SUPERCELL AND BOW STRUCTURES...LARGE HAIL AND DAMAGING GUSTS. SVR
THREAT SHOULD INCREASE AS ACTIVITY MOVES INTO HIGH PLAINS...WITH
DAMAGING WIND AND HAIL EXPECTED. BRIEF TORNADO CANNOT BE RULED
OUT...THOUGH EXPECTED HIGH LCL AND DOWNDRAFT EVAPORATION/COOLING
POTENTIAL INDICATE VERY LOW PROBABILITIES ATTM.

SFC AIR MASS ACROSS THIS REGION GENERALLY IS CHARACTERIZED BY
MID-UPPER 40S DEW POINTS...THOUGH PLUME OF LOW 50S EXTENDING FROM
MLS WWD ACROSS BIL AREA AND GOLDEN VALLEY COUNTY MAY BE MAINTAINED
THROUGH 21Z AS EFFECTS OF MOIST ADVECTION AND VERTICAL MIXING ARE
COUNTERBALANCED. ASSOCIATED MOIST AXIS IS ANALYZED JUST N OF SFC
FRONTAL ZONE ANALYZED NEAR BTM-LVM-BIL LINE ESEWD ACROSS NWRN
SD...WITH WEAK LOW EVIDENT NEAR BZN AS OF 19Z. FRONT SHOULD REMAIN
QUASISTATIONARY...AS ELY FLOW COMPONENT TO ITS N CONTRIBUTES
FAVORABLY TO ENLARGEMENT OF BOTH LOW LEVEL HODOGRAPHS AND DEEP-LAYER
SHEAR PROFILES. VWP AND RUC FCST SOUNDINGS INDICATE 45-55 KT
EFFECTIVE SHEAR MAGNITUDE...0-1 KM SRH AROUND 150 J/KG AND 0-3 KM
SRH 200-300 J/KG...OVER THAT PORTION OF W-CENTRAL THROUGH S-CENTRAL
MT E OF MOUNTAINS. THIS IS ALSO INVOF MOIST AXIS WHERE MLCAPES
AROUND 1500 J/KG MAY BE MAINTAINED.

WIDELY SCATTERED CB ALSO ARE EXPECTED ACROSS NRN WY...MOVING EWD OFF
WIND RIVER...ABSAROKA AND BIGHORN MOUNTAINS. WEAKER DEEP-LAYER
SHEAR PROFILES AND MOISTURE ARE EVIDENT WITH SWD EXTENT INTO
N-CENTRAL/NERN WY IN LEE OF THOSE RANGES...INDICATING LESS ORGANIZED
AND MORE ISOLATED HAIL/WIND THREAT.

.EDWARDS.. 05/19/2007

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

ATTN...WFO...UNR...BYZ...GGW...RIW...TFX...MSO...

43560935 44970954 45691101 46051209 46501286 47391238
47581105 47640978 47060837 46460670 45240562 44230557
43550615 43460707

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KUNR [191755]: Preliminary Local Storm Report

NWUS53 KUNR 191755
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
1155 AM MDT SAT MAY 19 2007

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

1100 PM HAIL 2 ENE DEADWOOD 44.39N 103.70W
05/18/2007 M0.75 INCH LAWRENCE SD TRAINED SPOTTER

&&

$$

WFO UNR STAFF

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KFGF [191738]: Preliminary Local Storm Report...summary

NWUS53 KFGF 191738
LSRFGF

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
1238 PM CDT SAT MAY 19 2007

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

0519 PM HAIL 9 ENE JESSIE 47.59N 98.06W
05/18/2007 E1.75 INCH GRIGGS ND PUBLIC

0545 PM HAIL 1 S WYLIE 47.95N 96.35W
05/18/2007 E0.88 INCH RED LAKE MN PUBLIC

0550 PM HAIL 10 WSW HAZEL 47.96N 96.31W
05/18/2007 E0.75 INCH PENNINGTON MN PUBLIC

0555 PM HAIL RED LAKE FALLS 47.89N 96.27W
05/18/2007 E0.88 INCH RED LAKE MN TRAINED SPOTTER

0600 PM HAIL 2 W SHARON 47.60N 97.94W
05/18/2007 E1.75 INCH STEELE ND PUBLIC

0615 PM HAIL 3 N MENTOR 47.74N 96.14W
05/18/2007 E0.75 INCH POLK MN PUBLIC

0625 PM HAIL 6 SE COOPERSTOWN 47.38N 98.03W
05/18/2007 E1.25 INCH GRIGGS ND TRAINED SPOTTER

0630 PM HAIL 6 N LUVERNE 47.34N 97.93W
05/18/2007 E0.75 INCH STEELE ND PUBLIC

0630 PM HAIL 7 E HANNAFORD 47.31N 98.04W
05/18/2007 E1.75 INCH GRIGGS ND PUBLIC

0639 PM HAIL ERSKINE 47.66N 96.01W
05/18/2007 E1.00 INCH POLK MN PUBLIC

0652 PM TORNADO 3 E WALUM 47.27N 98.13W
05/18/2007 GRIGGS ND TRAINED SPOTTER

TORNADO ON THE GROUND 8N OF LUVERNE ON GRIGGS SIDE OF THE
COUNTY LINE REPORTED BY TRAINED SPOTTER AT 652 PM. REPORT
RELAYED BY STEELE COUNTY LAW ENFORECEMENT.

0812 PM HAIL 3 N MOORHEAD 46.91N 96.76W
05/18/2007 E1.00 INCH CLAY MN TRAINED SPOTTER

0813 PM HAIL MINNEWAUKAN 48.07N 99.25W
05/18/2007 E0.75 INCH BENSON ND TRAINED SPOTTER

0820 PM HAIL 2 E SIBLEY 47.22N 97.92W
05/18/2007 E1.75 INCH BARNES ND LAW ENFORCEMENT

0820 PM HAIL MOORHEAD 46.86N 96.76W
05/18/2007 M1.50 INCH CLAY MN CO-OP OBSERVER

0838 PM HAIL DILWORTH 46.88N 96.70W
05/18/2007 E1.00 INCH CLAY MN PUBLIC

0840 PM HAIL 1 NE DILWORTH 46.89N 96.68W
05/18/2007 E1.75 INCH CLAY MN TRAINED SPOTTER

0850 PM TORNADO 3 NE VALLEY CITY 46.95N 97.96W
05/18/2007 BARNES ND TRAINED SPOTTER

TRAINED SPOTTER LOCATED AT 117 AVE SE AND 31ST ST SE 3
MILES NORTH OF VALLEY CITY REPORTED A BRIEF TOUCHDOWN IN
A FIELD 3.5 MILES NE OF VALLEY CITY.

0850 PM HAIL DEVILS LAKE 48.11N 98.87W
05/18/2007 E0.75 INCH RAMSEY ND TRAINED SPOTTER

0855 PM HAIL MOORHEAD 46.86N 96.76W
05/18/2007 E0.88 INCH CLAY MN PUBLIC

0856 PM HAIL DEVILS LAKE 48.11N 98.87W
05/18/2007 E0.88 INCH RAMSEY ND LAW ENFORCEMENT

DIME TO NICKEL SIZE HAIL REPORTED.

0903 PM HAIL SABIN 46.78N 96.65W
05/18/2007 E1.00 INCH CLAY MN LAW ENFORCEMENT

0904 PM HAIL FARGO 46.88N 96.82W
05/18/2007 E0.75 INCH CASS ND TRAINED SPOTTER

0909 PM HAIL FARGO 46.88N 96.82W
05/18/2007 E0.88 INCH CASS ND TRAINED SPOTTER

0914 PM HAIL 2 E ORISKA 46.93N 97.75W
05/18/2007 E1.00 INCH BARNES ND TRAINED SPOTTER

0919 PM FLASH FLOOD MOORHEAD 46.86N 96.76W
05/18/2007 CLAY MN PUBLIC

STREETS IN MOORHEARD FLOODING OVER THE CURBS. DITCHES
FILLING UP.

0944 PM HAIL BUFFALO 46.92N 97.55W
05/18/2007 E1.00 INCH CASS ND TRAINED SPOTTER

0948 PM HAIL MOORHEAD 46.86N 96.76W
05/18/2007 E1.00 INCH CLAY MN PUBLIC

1122 PM HAIL 11 S HILLSBORO 47.24N 97.06W
05/18/2007 E0.75 INCH TRAILL ND PUBLIC

OBSERVED ALONG INTERSTATE 29.

&&

$$

DRIDDLE

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 191727
SWODY2
SPC AC 191726

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1226 PM CDT SAT MAY 19 2007

VALID 201200Z - 211200Z

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

..SYNOPSIS...
MID/UPPER LEVEL TROUGH IS EXPECTED TO AMPLIFY AS IT MOVES ACROSS THE
PACIFIC NW INTO THE NRN INTERMOUNTAIN REGION ON SUNDAY AS UPSTREAM
HEIGHTS RISE ACROSS THE NERN PACIFIC. 12Z NAM IS NOW FASTER AND A
LITTLE STRONGER /BETTER AGREEMENT WITH GFS/ TRANSLATING A MID LEVEL
IMPULSE NEWD FROM ORE TO CENTRAL/ERN MT BY LATE SUNDAY AFTERNOON
/TOWARD 21/00Z/.

AT THE SURFACE...A COLD FRONT IS EXPECTED TO MOVE EWD INTO THE NRN
HIGH PLAINS SUNDAY AFTERNOON AND SHOULD EXTEND FROM THE MT/ND BORDER
SWWD TO THE WY/MT BORDER AREA BY 21/00Z. SURFACE LOW LOCATED IN THE
VICINITY OF NERN WY/SERN MT IS FORECAST TO DEEPEN IN RESPONSE TO THE
HEIGHT FALLS. A BOUNDARY INITIALLY EXTENDING EWD FROM THE LOW
THROUGH SRN SD TO ALONG THE MN/IA BORDER WILL RETREAT NWD AS A WARM
FRONT DUE TO STRENGTHENING SLY LOW LEVEL WINDS ACROSS THE PLAINS.
DESPITE THESE SLY WINDS...SURFACE RIDGING INTO THE WRN GULF WILL
CONTINUE TO LIMIT GULF MOISTURE RETURN FARTHER N THIS FORECAST
PERIOD.

..NRN HIGH PLAINS...
AT 12Z SUNDAY...TSTMS MAY BE ONGOING ACROSS PARTS OF ND. THIS
ACTIVITY WILL BE ASSOCIATED WITH A MID LEVEL IMPULSE TOPPING THE
RIDGE AND SHOULD PERSIST WITHIN WAA REGIME INTO ERN ND/NRN MN AND
ADJACENT PARTS OF CANADA. SEVERE WEATHER THREAT WILL BE MINIMAL DUE
TO WEAK ELEVATED INSTABILITY.

FARTHER W ACROSS THE SLIGHT RISK AREA...STRONG SURFACE HEATING
EXPECTED IN THE WARM SECTOR AND WWD FROM THE SURFACE LOW ALONG THE
COLD FRONT INTO SRN MT SHOULD RESULT IN MLCAPE VALUES UP TO 1500-
2000 J/KG...GIVEN STEEP LAPSE RATES AND SURFACE DEWPOINTS IN THE
50S. STRONGEST SWLY MID LEVEL FLOW IS EXPECTED TO EXTEND FROM ID/MT
INTO SRN CANADA AS UPPER TROUGH AMPLIFIES. ALTHOUGH SURFACE TO AT
LEAST 1 KM WINDS SHOULD GENERALLY BE WEAK ACROSS MT/WY...INCREASING
AND VEERING WINDS WITH HEIGHT WILL SUPPORT EFFECTIVE SHEAR OF 30-40
KT FAVORING SUPERCELLS.

TSTMS ARE EXPECTED TO INITIATE SUNDAY AFTERNOON ALONG THE COLD FRONT
IN SRN TO ERN MT. GIVEN STEEP MID LEVEL LAPSE RATES AND DRY
ADIABATIC PROFILES IN THE LOWEST 1-2 KM...BOTH SEVERE WIND AND HAIL
CAN BE EXPECTED WITH THESE STORMS. MODELS ALSO SUGGEST TSTM
DEVELOPMENT IN THE VICINITY OF THE SURFACE LOW AND EWD ALONG THE SD/
ND BORDER NEAR THE WARM FRONT BY LATE SUNDAY AFTERNOON. HAIL AND
STRONG WINDS WILL BE THE PRIMARY THREAT WITH THIS ACTIVITY.
HOWEVER...AN INCREASING SLY LLJ INTO THE DAKOTAS BY EARLY SUNDAY
EVENING AND RESULTANT INCREASING LOW LEVEL HODOGRAPH SIZE SUGGESTS
THE THREAT FOR ISOLATED TORNADOES.

ACTIVITY OVER MT MAY GROW UPSCALE INTO AN MCS SUNDAY EVENING AS IT
TRACKS ENEWD INTO ND AND ADJACENT PARTS OF SRN CANADA.
STRENGTHENING DAKOTAS SLY LLJ WILL MAINTAIN A FEED OF SUFFICIENT
ELEVATED INSTABILITY FOR A CONTINUED SEVERE THREAT SUNDAY NIGHT.

ELSEWHERE...HIGH BASED STORMS ARE POSSIBLE ACROSS EXTREME ERN WY/
FAR NWRN NEB TO THE SOUTH OF THE SURFACE LOW LATE SUNDAY AFTERNOON.
40+F SURFACE TEMPERATURE/DEWPOINT SPREADS WOULD BE SUPPORTIVE OF
STRONG WIND GUSTS...BUT ACTIVITY SHOULD BE DIURNAL AND GENERALLY
ISOLATED IN COVERAGE.

.PETERS.. 05/19/2007

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KCHS [191655]: Preliminary Local Storm Report

NWUS52 KCHS 191655
LSRCHS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1255 PM EDT SAT MAY 19 2007

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

1015 AM RIP CURRENTS TYBEE ISLAND 32.00N 80.85W
05/19/2007 CHATHAM GA PARK/FOREST SRVC

LIFEGUARDS REPORTED RIP CURRENTS AS TIDE WAS COMING IN.

&&

$$

SPR

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KFGF [191645]: Preliminary Local Storm Report

NWUS53 KFGF 191645
LSRFGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
1145 AM CDT SAT MAY 19 2007

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

1122 PM HAIL 11 S HILLSBORO 47.24N 97.06W
05/18/2007 E0.75 INCH TRAILL ND PUBLIC

OBSERVED ALONG INTERSTATE 29.

&&

$$

WBARRETT

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 191614
SWODY1
SPC AC 191611

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1111 AM CDT SAT MAY 19 2007

VALID 191630Z - 201200Z

..THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF CENTRAL/EASTERN
MT AND NORTHEAST WY...

BROAD UPPER RIDGE PERSISTS OVER THE CENTRAL PLAINS TODAY. WATER
VAPOR LOOPS SHOW ONE STRONG SHORTWAVE MOVING INLAND ACROSS WA/ORE
INTO ID...WHILE ANOTHER OVER ND/MN IS TURNING SOUTHEASTWARD AROUND
UPPER RIDGE INTO THE GREAT LAKES. STRONGER WESTERLIES ARE CONFINED
TO THE NORTHERN PLAINS...WHERE GREATER THREAT OF ORGANIZED
THUNDERSTORMS WILL BE PRESENT TODAY.

..MT...
UPPER TROUGH NOW APPROACHING BOI WILL TRACK EASTWARD AND INTO
WESTERN MT BY THIS AFTERNOON. RELATIVELY STRONG LARGE SCALE FORCING
FOR ASCENT WILL OVERSPREAD THE MOUNTAINS OF WESTERN/CENTRAL MT WHERE
SUNNY SKIES AND STEEPENING LAPSE RATES ARE HELPING TO DESTABILIZE
AIR MASS. SCATTERED THUNDERSTORMS WILL DEVELOP OVER THE HIGHER
TERRAIN SOUTH OF GTF AND WEST OF BIL...SPREADING EASTWARD INTO THE
ADJACENT PLAINS DURING THE LATE AFTERNOON AND EVENING. LOW LEVEL
TRAJECTORIES OVER NORTHEAST MT WILL LIKELY LIMIT RETURN OF GREATER
MOISTURE AND UNSTABLE AIR. THIS MAY CONFINE GREATER RISK OF SEVERE
STORMS TO HLN/LWT SOUTHWARD. FORECAST SOUNDINGS IN THIS REGION
APPEAR FAVORABLE FOR HIGH BASED SUPERCELLS CAPABLE OF LARGE HAIL AND
DAMAGING WINDS. EVOLUTION INTO SQUALL LINE IS POSSIBLE THIS EVENING
AS STORMS MOVE EASTWARD INTO SOUTHEAST MT AND PERHAPS NORTHEAST WY.

..WI/MN/SD/NEB...
WEAK COLD FRONT EXTENDS FROM NEAR DLH - HON - RAP. THIS BOUNDARY IS
LIKELY TO CONTINUE MOVING SLOWLY SOUTHEASTWARD THROUGH THE DAY AS
SHORTWAVE TROUGH OVER MN SHIFTS EASTWARD. CONVERGENCE ALONG
FRONT...COUPLED WITH STEEP LOW LEVEL LAPSE RATES AND DAYTIME HEATING
MAY RESULT IN ISOLATED THUNDERSTORMS ANYWHERE FROM CENTRAL WI INTO
WESTERN NEB. VERTICAL SHEAR PROFILES ARE RELATIVELY WEAK THROUGHOUT
THE REGION...BUT STRONGEST OVER MN/WI /25-30 KNOTS OF EFFECTIVE
SHEAR/. ISOLATED...SLOW MOVING THUNDERSTORMS ALONG THIS BOUNDARY
WILL POSE A RISK OF LOCALLY GUSTY WINDS AND HAIL THIS AFTERNOON AND
EVENING. AREAL COVERAGE AND ORGANIZATION OF STORMS IS FORECAST TO
BE TOO LOW TO WARRANT A SLIGHT RISK.

..FL...
MOIST AND MODERATELY UNSTABLE AIR MASS REMAINS OVER THE SOUTHERN FL
PENINSULA TODAY WITH DEWPOINTS IN THE MID/UPPER 60S AND STRONG
HEATING. SIMILAR TO YESTERDAY...COMBINATION OF SEA BREEZE
INTERACTIONS AND SLOW MOVING COLD FRONT MAY RESULT IN SCATTERED
AFTERNOON THUNDERSTORMS. GUSTY WINDS AND HAIL ARE POSSIBLE IN
STRONGEST CELLS.

.HART/JEWELL.. 05/19/2007

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 191244
SWODY1
SPC AC 191242

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0742 AM CDT SAT MAY 19 2007

VALID 191300Z - 201200Z

..THERE IS A SLGT RISK OF SVR TSTMS THIS AFTERNOON INTO EARLY
TONIGHT FOR CENTRAL AND SRN MT TO EXTREME NE WY AND WRN SD...

..MT AREA THIS AFTERNOON INTO EARLY TONIGHT...
A MID LEVEL LOW W OF VANCOUVER WILL MOVE SLOWLY EWD TOWARD SRN
BRITISH COLUMBIA BY EARLY SUNDAY...WITH DOWNSTREAM HEIGHT FALLS
EXPECTED OVER THE NRN ROCKIES AS AN EMBEDDED SHORTWAVE TROUGH
ROTATES AROUND THE SERN PERIPHERY OF THE LOW FROM WA/ORE TO MT. A
WEAK COLD FRONT WILL MOVE EWD INTO WRN MT IN CONJUNCTION WITH THE
MID LEVEL TROUGH...WHILE A WEAK SURFACE LOW DEVELOPS EWD ACROSS S
CENTRAL INTO SE MT. MEANWHILE...A SEPARATE FRONT ACROSS NRN AND ERN
MT WILL LIKELY STALL TODAY...AND LIFT A LITTLE TO THE NE BY EARLY
TONIGHT.

LOW-LEVEL MOISTURE IS LIMITED ACROSS MT WITH BOUNDARY LAYER
DEWPOINTS ONLY IN THE MID-UPPER 40S ACROSS SRN MT THIS
MORNING...WITH LESSER MOISTURE ACROSS N/NE MT. STILL...STEEP
LOW-MID LEVEL LAPSE RATES AND AFTERNOON TEMPERATURES NEAR 80 F WILL
CONTRIBUTE TO MODERATE INSTABILITY /MLCAPE VALUES OF 750-1500 J/KG/
OVER CENTRAL AND SRN MT. INITIAL THUNDERSTORM DEVELOPMENT IS
EXPECTED BY MID AFTERNOON OVER THE HIGH TERRAIN OF SW MT...AND
CONVECTION WILL THEN SPREAD EWD ACROSS CENTRAL/SRN MT THROUGH THE
EVENING. VERTICAL SHEAR WILL ALSO INCREASE FROM W TO E AS THE
HEIGHT FALLS AND STRONGER MID LEVEL HEIGHT GRADIENT SPREAD EWD...AND
THE ENVIRONMENT WILL BECOME FAVORABLE FOR A FEW HIGH-BASED
SUPERCELLS. GIVEN THE RELATIVELY DRY BOUNDARY LAYER AND THE
POTENTIAL FOR STRONG COLD POOL DEVELOPMENT...CONVECTION MAY GROW
UPSCALE INTO A LINEAR MCS THROUGH OUTFLOW MERGERS. LARGE HAIL AND
DAMAGING WINDS WILL BE THE PRIMARY SEVERE THREATS. BY LATER
TONIGHT...THE SEVERE THREAT SHOULD DIMINISH AS THE CONVECTION
ENCOUNTERS THE MORE STABLE LOW-LEVEL AIR MASS ACROSS NE MT AND ND.

..NRN NEB/SRN SD TO CENTRAL WI THIS AFTERNOON...
A SURFACE COLD FRONT WILL SAG SWD ACROSS THE UPPER MS VALLEY...WHILE
THE BOUNDARY SHOULD STALL THIS AFTERNOON ACROSS NEB/SD. S OF THE
FRONT...A NARROW CORRIDOR OF BOUNDARY LAYER DEWPOINTS IN THE MID 50S
F PERSISTS THIS MORNING. THE NAM/GFS FORECASTS OF SURFACE DEWPOINTS
IN THE 60S F THIS AFTERNOON FROM SD TO WI APPEAR OVERDONE...WITH
MEAN VALUES IN THE MID-UPPER 50S MORE PROBABLE. THIS MOISTURE AND
AFTERNOON TEMPERATURES AOA 80 F WILL CONTRIBUTE TO MLCAPE VALUES OF
750-1500 J/KG...AND THE SURFACE FRONT WILL PROVIDE A FOCUS FOR STORM
DEVELOPMENT THIS AFTERNOON. STORM ORGANIZATION/PERSISTENCE WILL BE
LIMITED BY RELATIVELY WEAK VERTICAL SHEAR...BUT A FEW STORMS COULD
BRIEFLY PRODUCE OUTFLOW WINDS AND HAIL NEAR SEVERE CRITERIA.

.THOMPSON/TAYLOR.. 05/19/2007

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KFGF [191109]: Preliminary Local Storm Report

NWUS53 KFGF 191109
LSRFGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
609 AM CDT SAT MAY 19 2007

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

0625 PM HAIL 6 SE COOPERSTOWN 47.38N 98.03W
05/18/2007 E1.25 INCH GRIGGS ND TRAINED SPOTTER

&&

$$

GV

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