KFGZ [231938]: Preliminary Local Storm Report

NWUS55 KFGZ 231938
LSRFGZ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1238 PM MST SUN MAY 23 2010

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

1236 PM DUST STORM CHINLE 36.15N 109.58W
05/23/2010 APACHE AZ LAW ENFORCEMENT

CHINLE DISPATCH REPORTS VISBILITY NEAR ZERO DUE TO DUST
ON HWY 191 NORTH OF CHINLE

&&

EVENT NUMBER FGZ1000087

$$

DL

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KRAH [231935]: Preliminary Local Storm Report

NWUS52 KRAH 231935
LSRRAH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
335 PM EDT SUN MAY 23 2010

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

0310 PM TSTM WND GST 6 WNW GARNER 35.72N 78.72W
05/23/2010 E55 MPH WAKE NC TRAINED SPOTTER

ESTIMATED WIND GUSTS OF 50 TO 60 MPH.

&&

$$

KMC

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KAKQ [231920]: Preliminary Local Storm Report

NWUS51 KAKQ 231920
LSRAKQ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WAKEFIELD VA
320 PM EDT SUN MAY 23 2010

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

0230 PM LIGHTNING 2 N NORGE 37.39N 76.77W
05/23/2010 JAMES CITY VA TRAINED SPOTTER

LIGHTNING STRUCK A HOUSE ON LOCUST STREET...WHICH SPARKED
A HOUSE FIRE.

&&

$$

HURLEY

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KILM [231915]: Preliminary Local Storm Report

NWUS52 KILM 231915
LSRILM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
314 PM EDT SUN MAY 23 2010

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

0235 PM HAIL 4 NNW GARDEN CITY 33.64N 79.02W
05/23/2010 E1.25 INCH HORRY SC PUBLIC

PUBLIC REPORTS HALF DOLLAR SIZED HAIL FELL FROM ABOUT 235
TO 250 AND BEGAN TO COVER THE GROUND.

&&

$$

WEISS

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MESO: Mesoscale Discussion 0673

ACUS11 KWNS 231908
SWOMCD
SPC MCD 231908
MNZ000-WIZ000-232015-

MESOSCALE DISCUSSION 0673
NWS STORM PREDICTION CENTER NORMAN OK
0208 PM CDT SUN MAY 23 2010

AREAS AFFECTED...PORTIONS OF NERN MN AND NWRN WI

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 231908Z - 232015Z

THUNDERSTORMS MAY DEVELOP OVER PORTIONS OF NERN MN DURING THE NEXT
HOUR OR SO AND THEN SPREAD EWD INTO NWRN WI. A WW MAY BE REQUIRED
LATER THIS AFTERNOON.

AT 19Z...A SLOW MOVING COLD FRONT EXTENDED ROUGHLY FROM NEAR INL
SWWD TO NORTH AND WEST OF RWF. THIS FRONT WILL CONTINUE TO MOVE
SLOWLY EWD THIS AFTERNOON...IN CONJUNCTION WITH RIGHT ENTRANCE
REGION OF UPPER JET MAX LOCATED OVER MANITOBA...AND AID CONVECTIVE
DEVELOPMENT. LATEST ANALYSIS SHOWS THAT DEEP LAYER SHEAR AT 30-40 KT
AND MLCAPE VALUES FROM 1500-2500 J/KG WOULD BE SUFFICIENT FOR SEVERE
STORMS. HOWEVER...MOSTLY CLOUDY SKIES...SLIGHT HEIGHT RISES AND
GRADUALLY BACKING OF WINDS ALOFT DO RAISE SOME UNCERTAINTY ON THE
INTENSITY AS WELL AS THE COVERAGE OF STORMS. IF IT BECOMES EVIDENT
THAT STRONGER UPDRAFTS CAN BE SUSTAINED...A WW WOULD THEN BECOME
MORE LIKELY.

..IMY.. 05/23/2010

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

ATTN...WFO...DLH...MPX...

LAT...LON 45419388 45949391 47569271 48059174 47889057 47388986
45659111 45009228 45099327 45419388

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KILM [231847]: Preliminary Local Storm Report

NWUS52 KILM 231847
LSRILM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
247 PM EDT SUN MAY 23 2010

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

0238 PM HAIL SOCASTEE 33.69N 79.01W
05/23/2010 E1.00 INCH HORRY SC TRAINED SPOTTER

&&

$$

BACON

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 231742
SWODY2
SPC AC 231742

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1242 PM CDT SUN MAY 23 2010

VALID 241200Z - 251200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF THE CENTRAL
PLAINS NWD THROUGH THE NRN PLAINS...

...SYNOPSIS...
BLOCKING PATTERN /REX BLOCK/ WILL CONTINUE TO EVOLVE OVER THE ERN
U.S. INTO THE DAY 2 PERIOD...WITH HEIGHT RISES ACROSS THE GREAT
LAKES TO NEW ENGLAND/ADJACENT ERN CANADA...AND A BROAD UPPER LOW
WILL BE MAINTAINED FROM THE WRN ATLANTIC TO SERN STATES. THE ERN
BLOCK WILL PLAY A KEY ROLE IN THE DAY 2 OUTLOOK...RESULTING IN A NWD
TRACK OF A STRONG MID AND UPPER-LEVEL LOW FROM THE FOUR CORNERS TO
THE CENTRAL CANADIAN U.S. BORDER AREA LATE MONDAY/EARLY TUESDAY.
THIS WILL SUPPORT THE SYSTEM DEEPENING AS IT BECOMES
NEGATIVELY-TILTED ACROSS THE CENTRAL ROCKIES/HIGH PLAINS MONDAY
AFTERNOON TO THE NRN PLAINS MONDAY NIGHT.

...NRN AND CENTRAL PLAINS...
THE DEEPENING MID-UPPER LEVEL SYSTEM WILL BE ACCOMPANIED BY A FAIRLY
STRONG SURFACE CYCLONE TRACKING NWD FROM SERN WY/NEB BORDER AT 12Z
MONDAY TO EXTREME SERN SASKATCHEWAN BY 12Z TUESDAY. AN E/NEWD
SURGING COLD FRONT IS EXPECTED TO OVERTAKE A WRN PLAINS DRY LINE BY
MONDAY EVENING AND SHOULD EXTEND FROM MN SWWD THROUGH MID MO VALLEY
TO SRN HIGH PLAINS BY END OF DAY 2.

TSTMS...SOME SEVERE...ARE EXPECTED TO BE ONGOING ACROSS PARTS OF THE
NRN PLAINS AT 12Z MONDAY ALONG AND N OF A WARM FRONT WHICH SHOULD
EXTEND ENEWD FROM THE WY/NEB SURFACE LOW THROUGH CENTRAL SD TO
CENTRAL MN. THIS ACTIVITY WILL BE DRIVEN BY WAA REGIME ALONG NOSE
OF A STRONG SLY LLJ...BUT SHOULD WEAKEN MONDAY MORNING AS IT SHIFTS
NWD AND A CAPPING ELEVATED MIXED LAYER SPREADS NWD THROUGH THE
REGION. THE AMOUNT OF ASSOCIATED CLOUDINESS/PRECIPITATION WITH THE
MORNING ACTIVITY WILL LIKELY RESULT IN HOW FAR N THE WARM FRONT WILL
BE ABLE TO RETURN. DESPITE THIS UNCERTAINTY MODELS ARE IN FAIRLY
GOOD AGREEMENT SHOWING THE WARM FRONT EXTENDING NEWD FROM WRN SD
THROUGH SRN ND TO NWRN MN BY 24/21Z. SURFACE HEATING WITHIN A MOIST
WARM SECTOR /SURFACE DEWPOINTS MID-UPPER 60S AND BENEATH STEEP MID
LEVEL LAPSE RATES /7-8.5 C PER KM/ WILL SUPPORT MLCAPE /1500-3000 J
PER KG/.

NEW TSTM DEVELOPMENT WILL BE POSSIBLE MONDAY AFTERNOON ALONG THE DRY
LINE FROM THE SURFACE LOW IN WRN SD TO PARTS OF WRN KS AS THE
LEADING EDGE OF THE STRONGER FORCING FOR ASCENT AND COOLER MID LEVEL
TEMPERATURES SPREAD ACROSS THIS REGION. ADDITIONAL STORMS WILL BE
POSSIBLE ALONG THE WARM FRONT. ALTHOUGH STRONG MID-UPPER LEVEL
WINDS WILL BE NEARLY UNIDIRECTIONAL /SSWLY/...RE-STRENGTHENING SLY
LLJ /40-50 KT/ FROM NRN KS TO THE DAKOTAS AND SELY SURFACE WINDS IN
THE WARM SECTOR WILL PROMOTE STRONG EFFECTIVE BULK SHEAR /40-60 KT/.
THIS COMBINED WITH THE MODERATE TO VERY STRONG INSTABILITY WILL
SUPPORT SUPERCELLS WITH THE INITIAL DRY LINE AND WARM FRONT STORMS.
PRIMARY SEVERE THREATS SHOULD BE TORNADOES AND LARGE HAIL...SOME
VERY LARGE. GIVEN THESE FACTORS...SEVERE PROBABILITIES HAVE BEEN
INCREASED TO A HIGH END SLIGHT RISK FOR MUCH OF CENTRAL SD INTO SRN
ND. GIVEN THAT THERE REMAINS SOME UNCERTAINTY IN THE PLACEMENT OF
THE WARM FRONT MONDAY AFTERNOON...THIS OUTLOOK WILL NOT BE UPGRADED
TO A MODERATE RISK. HOWEVER...SEVERE PARAMETERS ARE BECOMING MORE
CONVINCING THAT A SIGNIFICANT SEVERE WEATHER THREAT SHOULD OCCUR
OVER THE DAKOTAS DURING DAY 2.

MODELS REMAIN CONSISTENT FOR MONDAY NIGHT SHOWING AN UPSCALE GROWTH
INTO A MESOSCALE CONVECTIVE SYSTEM SPREADING NNEWD ACROSS THE
DAKOTAS/NEB WITH THE PRIMARY SEVERE THREAT TRANSITIONING TO DAMAGING
WINDS ALONG THE SURGING COLD FRONT.

..PETERS.. 05/23/2010

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KLWX [231729]: Preliminary Local Storm Report

NWUS51 KLWX 231729
LSRLWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
129 PM EDT SUN MAY 23 2010

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

0124 PM FLASH FLOOD ARCOLA 38.95N 77.53W
05/23/2010 LOUDOUN VA EMERGENCY MNGR

BELMONT RIDGE RD CLOSED

&&

EVENT NUMBER LWX1000290

$$

SMZ

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KRNK [231707]: Preliminary Local Storm Report

NWUS51 KRNK 231707
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
107 PM EDT SUN MAY 23 2010

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

0530 PM TSTM WND DMG ELMO 36.67N 79.13W
05/22/2010 HALIFAX VA EMERGENCY MNGR

LARGE TREE DOWN. TIME ESTIMATED FROM RADAR.

&&

$$

KM

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MESO: Mesoscale Discussion 0672

ACUS11 KWNS 231704
SWOMCD
SPC MCD 231703
NCZ000-VAZ000-SCZ000-231800-

MESOSCALE DISCUSSION 0672
NWS STORM PREDICTION CENTER NORMAN OK
1203 PM CDT SUN MAY 23 2010

AREAS AFFECTED...PORTIONS OF SC/NC/VA

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 231703Z - 231800Z

THUNDERSTORMS WILL CONTINUE TO INCREASE IN COVERAGE THIS
AFTERNOON...WITH ISOLATED STRONGER STORMS CAPABLE OF DMGG WINDS AND
MARGINALLY SEVERE HAIL. A WW IS NOT ANTICIPATED...THOUGH TRENDS WILL
CONTINUE TO BE MONITORED.

COMPLEX OF THUNDERSTORMS IN ERN NC CONTINUES...WHILE THE CU FIELD IS
BEGINNING TO INCREASE ALONG A BOUNDARY/WEAK SURFACE TROUGH AXIS
EXTENDING SWWD OF THIS THROUGH FLO AND CAE. DESTABILIZATION IS
OCCURRING BEHIND THE COMPLEX...IN PART DUE TO DIURNAL HEATING...AND
IN ASSOCIATION WITH COOLING TEMPERATURES ALOFT. ADDITIONALLY...A SEA
BREEZE IS BEGINNING TO MOVE INLAND ALONG THE COAST...AND BOTH
AFOREMENTIONED AREAS OF SURFACE CONVERGENCE MAY BE FAVORED AREAS FOR
INITIAL/CONTINUED DEVELOPMENT.

FARTHER N IN VA...CU FIELD IS BEGINNING TO INCREASE ALONG THE HIGHER
TERRAIN...AND ACROSS PORTIONS OF ERN VA ALONG THE SURFACE TROUGH
AXIS. AS STORMS CONTINUE TO DEVELOP AHEAD OF A VORT MAX IN ERN
WV/NWRN VA...MLCAPE NEAR 1500 J/KG AND AREAS OF FAVORED SURFACE
CONVERGENCE MAY ENHANCE UPDRAFT STRENGTH...ALLOWING FOR BRIEFLY
STRONG TO SEVERE STORMS. ALTHOUGH FLOW REMAINS WEAK...STEEP LOW
LEVEL LAPSE RATES/PRECIPITATION LOADING WILL ENHANCE DOWNDRAFT
STRENGTH...WHILE COOL TEMPERATURES ALOFT WILL SUPPORT MARGINALLY
SEVERE HAIL.

..HURLBUT.. 05/23/2010

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

ATTN...WFO...AKQ...MHX...LWX...RAH...ILM...RNK...CHS...CAE...
GSP...

LAT...LON 34797747 33507912 33187969 33078063 33568135 33968126
34288078 35468018 36338005 37137990 38047934 38267782
37657701 37007649 35537648 34797747

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KABR [231657]: Preliminary Local Storm Report

NWUS53 KABR 231657
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
1157 AM CDT SUN MAY 23 2010

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

0635 PM HAIL HERREID 45.84N 100.07W
05/22/2010 E1.75 INCH CAMPBELL SD TRAINED SPOTTER

&&

$$

ATG

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KTFX [231632]: Preliminary Local Storm Report

NWUS55 KTFX 231632
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1032 AM MDT SUN MAY 23 2010

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

0800 AM SNOW 11 NW BOULDER 46.35N 112.28W
05/23/2010 M8.0 INCH JEFFERSON MT MESONET

ROCKER PEAK SNOTEL MEASURED 24-HOUR SNOWFALL OF 8 INCHES.
ELEVATION 8000 FEET.

0900 AM SNOW BASIN 46.27N 112.26W
05/23/2010 E6.0 INCH JEFFERSON MT TRAINED SPOTTER

ESTIMATED 12-HOUR SNOWFALL OF 6 INCHES. ELEVATION 5400
FEET.

0900 AM SNOW 7 NE BUTTE 46.08N 112.43W
05/23/2010 E7.0 INCH JEFFERSON MT TRAINED SPOTTER

ESTIMATED 12-HOUR SNOWFALL 7 INCHES. ELEVATION 6100 FEET.

&&

$$

MLS

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KBOI [231632]: Preliminary Local Storm Report

NWUS55 KBOI 231632
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
1032 AM MDT SUN MAY 23 2010

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

0900 AM HEAVY RAIN 2 NE BOISE 43.63N 116.20W
05/23/2010 M1.70 INCH ADA ID COCORAHS

RAIN/SNOW MIX

&&

$$

VMILLS

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 231631
SWODY1
SPC AC 231630

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1130 AM CDT SUN MAY 23 2010

VALID 231630Z - 241200Z

...THERE IS A SLGT RISK OF SVR TSTMS FROM THE UPPER MS VALLEY
THROUGH THE CNTRL PLAINS INTO THE SRN HIGH PLAINS...

...SYNOPSIS...

THE PRIMARY FEATURE OF INTEREST THIS PERIOD IS A STRONG MID AND
UPPER-LEVEL LOW CURRENTLY DIGGING SEWD OVER CA/NV. THIS SYSTEM WILL
BEGIN TO TURN EWD LATER TODAY PRIOR TO ACCELERATING NEWD INTO THE
FOUR CORNERS REGION TONIGHT AS MID/HIGH-LEVEL JET STREAKS ROUND THE
TROUGH BASE AND DEVELOP DOWNSTREAM OVER THE ROCKIES. THIS EVOLUTION
WILL RESULT IN A CORRIDOR OF SIGNIFICANT HEIGHT FALLS/DYNAMIC
FORCING FOR ASCENT SPREADING EWD/NEWD FROM THE LOWER CO VALLEY INTO
THE CNTRL/SRN ROCKIES.

AT THE SURFACE...CURRENT MESOANALYSIS SHOWS PRIMARY SYNOPTIC FRONT
EXTENDING FROM CNTRL MN SWWD THROUGH THE MID MO VALLEY INTO THE SRN
HIGH PLAINS AND SRN ROCKIES. THE NRN PORTION OF THIS BOUNDARY WILL
SHIFT SLOWLY EWD TODAY GRADUALLY WEAKENING WITH TIME BENEATH
BUILDING MIDLEVEL HEIGHTS. MEANWHILE...THE SWRN EXTENSION OF THIS
FRONT WILL RETREAT NWD THROUGH THE CNTRL PLAINS IN RESPONSE TO LEE
CYCLOGENESIS OVER ERN CO LATER TODAY INTO TONIGHT. AS THIS
OCCURS...A LEE TROUGH/DRY LINE WILL BE ENHANCED OVER THE HIGH
PLAINS...ALLOWING FOR THE WWD/NWWD ADVECTION OF A MOIST BOUNDARY
LAYER INTO THE HIGH PLAINS REGION.

...UPPER MS VALLEY TODAY...

12Z MODEL GUIDANCE CONTINUES TO SUGGEST THAT DIURNAL STORM
DEVELOPMENT WILL BE POSSIBLE ALONG THE WEAKENING COLD FRONT TODAY
WITHIN A MOIST AND MODERATELY UNSTABLE ENVIRONMENT BASED ON 12Z MPX
SOUNDING. FACTORS POTENTIALLY LIMITING A MORE ROBUST SEVERE WEATHER
THREAT APPEAR TO BE RISING MIDLEVEL HEIGHTS ACROSS THE REGION AND
THE PRESENCE OF WIDESPREAD LOW CLOUDS WHICH COULD LIMIT THE
DEVELOPMENT OF STRONGER AIR MASS DESTABILIZATION. NONETHELESS...THE
PRESENCE OF 30-40 KT DEEP...SWLY SHEAR AND THE MOIST BOUNDARY LAYER
MAY YIELD A FEW SEVERE STORMS/CLUSTERS CAPABLE OF MAINLY DAMAGING
WINDS AND HAIL.

...CNTRL/SRN HIGH PLAINS THIS AFTERNOON AND TONIGHT...

12Z OBSERVED SOUNDINGS INDICATE THE PRESENCE OF A STRONG CAP
ASSOCIATED WITH AN ESTABLISHED EML OVER THE REGION. STEEP MIDLEVEL
LAPSE RATES ASSOCIATED WITH THE EML...BOUNDARY LAYER DEW POINTS IN
THE 60S AND DIABATIC HEATING WILL CONTRIBUTE TO A MODERATE TO
STRONGLY UNSTABLE WARM SECTOR AIR MASS TODAY WITH MLCAPE OF
2000-3000 J/KG.

GIVEN THE TENDENCY FOR SLIGHT MIDLEVEL HEIGHT RISES/RIDGING IN
ADVANCE OF THE SWRN U.S. SYSTEM...IT APPEARS THAT THE CAP MAY
SUPPRESS SURFACE-BASED STORM INITIATION THROUGH MUCH OF THE
AFTERNOON. BY 24/00Z THE COMBINATION OF NEUTRAL TO WEAK HEIGHT
FALLS COUPLED WITH THE INITIAL DEVELOPMENT OF A 50+ KT LLJ SUGGEST
AN INCREASED LIKELIHOOD OF STORM FORMATION ALONG THE RETREATING WARM
FRONT ACROSS WRN KS/ERN CO...AND PERHAPS SWD ALONG THE LEE
TROUGH/RETREATING DRY LINE.

THE PRESENCE OF 45-55 KT SWLY FLOW ACROSS THE HIGH PLAINS WILL
RESULT IN SUFFICIENT DEEP-LAYER SHEAR FOR SUPERCELLS CAPABLE OF
LARGE HAIL THROUGH THE DIURNAL HEATING CYCLE INTO TONIGHT.
MOREOVER...INITIALLY VEERED LOW-LEVEL FLOW WILL BACK AND
STRENGTHEN...PARTICULARLY THIS EVENING...SUGGESTING AN INCREASED
THREAT FOR TORNADOES WITH ANY SURFACE-BASED SUPERCELLS THAT CAN
BECOME ESTABLISHED.

STRONG-SEVERE TSTMS ARE EXPECTED TO INCREASE IN COVERAGE TONIGHT
ALONG THE RETREATING WARM FRONT FROM NERN CO/NWRN KS THROUGH NEB/ERN
WY INTO SD. LARGE HAIL WILL BE THE PRIMARY HAZARD WITH THESE
STORMS...THOUGH A TORNADO OR TWO WILL REMAIN POSSIBLE WITH ANY
SUPERCELLS THAT CAN REMAIN MORE ISOLATED.

...CAROLINAS TODAY...

12Z UPPER-AIR ANALYSIS SHOWED A POCKET OF RELATIVELY COOL MIDLEVEL
TEMPERATURES /I.E. -11 TO -14 C AT 500 MB/ ASSOCIATED WITH A
WELL-DEFINED VORTICITY MAXIMUM SLOWLY TRANSLATING SWD INTO THE
REGION FROM WV/VA. CLOUD SHIELD ASSOCIATED WITH ONGOING TSTM
COMPLEX OVER ERN NC MAY LOCALLY INHIBIT DAYTIME HEATING AND AIR MASS
DESTABILIZATION. ELSEWHERE...STRONG DIABATIC HEATING...DEW POINTS
IN THE 60S AND MIDLEVEL COOLING WILL CONTRIBUTE TO A MODERATELY
UNSTABLE AIR MASS LATER TODAY WITH MLCAPE OF 1000-2000 J/KG.
VERTICAL SHEAR WILL REMAIN RELATIVELY WEAK...THOUGH THE DEGREE OF
INSTABILITY AND INCREASED FORCING FOR ASCENT ASSOCIATED WITH THE
UPPER SYSTEM MAY FOSTER ISOLATED SEVERE STORMS CAPABLE OF STRONG
WIND GUSTS AND PERHAPS SOME HAIL.

..MEAD/HURLBUT.. 05/23/2010

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KBOI [231549]: Preliminary Local Storm Report

NWUS55 KBOI 231549
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
949 AM MDT SUN MAY 23 2010

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

0900 AM SNOW GARDEN VALLEY 44.10N 115.96W
05/23/2010 M1.0 INCH BOISE ID TRAINED SPOTTER

ABOUT ONE INCH OF SNOW ON GROUND. SNOWED YESTERDAY
AFTERNOON. TOTAL PRECIPITATION 0.78. VISIBILITY 0.25 MILE
IN DENSE FOG.

0804 AM SNOW 11 SSE HORSESHOE BEND 43.77N 116.11W
05/23/2010 M15.0 INCH BOISE ID MESONET

14 HOURS THROUGH MIDNIGHT 15 INCHES OF NEW SNOW AT BOGUS
BASIN SNOTEL...SWE INCREASE FROM 10 AM TO MIDNIGHT WAS
1.5 INCHES LIQUID.

0800 AM HEAVY RAIN 2 NNE BOISE 43.63N 116.21W
05/23/2010 E1.45 INCH ADA ID COCORAHS

HAD A RAIN SNOW MIX.

0800 AM SNOW 13 E BOISE 43.64N 115.98W
05/23/2010 M4.0 INCH BOISE ID TRAINED SPOTTER

4 INCHES AT RIM RANCHES 1 TO 4 PM. SNOW COVERED ROADS -
HIGHWAY 21 STILL SNOW ON GROUND EARLY SUNDAY 5/23/2010
MORNING PER ESPOTTER. MORES CREEK SNOTEL 4 INCHES NEW
SNOW 10 TO 1 RATIO FROM NOON THROUGH 4 PM 5/22. JACKSON
PEAK SNOTEL 5 INCHES NEW SNOW AND 0.5 LIQUID FROM NOON
5/22 THROUGH MIDNIGHT.

0703 AM HEAVY RAIN 9 NNW BOISE 43.73N 116.29W
05/23/2010 M1.19 INCH ADA ID COCORAHS

ALSO A TRACE OF SNOW.

0700 AM HEAVY RAIN 4 SE BOISE 43.57N 116.17W
05/23/2010 M1.52 INCH ADA ID COCORAHS

0700 AM HEAVY RAIN 5 NE BOISE 43.66N 116.16W
05/23/2010 M1.00 INCH ADA ID COCORAHS

0700 AM HEAVY RAIN 7 SE BOISE 43.53N 116.13W
05/23/2010 M1.27 INCH ADA ID COCORAHS

ALSO SNOWED 0.7 INCHES WITH SNOW DEPTH 0.5 INCHES.

&&

$$

VMILLS

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KCHS [231540]: Preliminary Local Storm Report

NWUS52 KCHS 231540
LSRCHS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1140 AM EDT SUN MAY 23 2010

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

0900 AM RIP CURRENTS FOLLY BEACH 32.66N 79.92W
05/23/2010 CHARLESTON SC COUNTY OFFICIAL

RIP CURRENT REPORTED BY THE COUNTY LIFEGUARDS AT THE
SOUTH END OF THE BEACH AROUND LOW TIDE.

&&

$$

RJB

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KABR [231534]: Preliminary Local Storm Report

NWUS53 KABR 231534
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
1034 AM CDT SUN MAY 23 2010

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

0910 PM FLASH FLOOD LEOLA 45.72N 98.94W
05/22/2010 MCPHERSON SD TRAINED SPOTTER

2.12 IN. OF RAIN FELL WITHIN 1 HOUR...YARD AND STREET
FLOODING REPORTED.

&&

$$

ATG

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KPIH [231527]: Preliminary Local Storm Report

NWUS55 KPIH 231527
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
927 AM MDT SUN MAY 23 2010

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

0922 AM SNOW STANLEY 44.22N 114.94W
05/23/2010 M3.0 INCH CUSTER ID CO-OP OBSERVER

3 INCHES STORM TOTAL SNOWFALL

0922 AM SNOW 4 NW CLAYTON 44.30N 114.46W
05/23/2010 E6.0 INCH CUSTER ID TRAINED SPOTTER

6 INCHES STORM TOTAL SNOWFALL

0922 AM SNOW 1 S CHALLIS 44.49N 114.22W
05/23/2010 E6.0 INCH CUSTER ID TRAINED SPOTTER

6 INCHES STORM TOTAL SNOWFALL

0922 AM SNOW 28 NE STANLEY 44.50N 114.54W
05/23/2010 M3.0 INCH CUSTER ID MESONET

3 INCHES STORM TOTAL SNOWFALL

0922 AM SNOW 22 ENE GALENA 43.99N 114.24W
05/23/2010 M3.0 INCH CUSTER ID MESONET

3 INCHES STORM TOTAL SNOWFALL

0922 AM SNOW 24 N CHALLIS 44.85N 114.22W
05/23/2010 M4.0 INCH CUSTER ID MESONET

4 INCHES STORM TOTAL SNOWFALL

&&

$$

DPHELPS

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KMSO [231512]: Preliminary Local Storm Report...corrected

NWUS55 KMSO 231512
LSRMSO

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE MISSOULA MT
912 AM MDT SUN MAY 23 2010

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

0541 AM HEAVY SNOW DIVIDE 45.75N 112.75W
05/23/2010 M7.0 INCH SILVER BOW MT TRAINED SPOTTER

SEVEN INCHES TOTAL SINCE SATURDAY AFTERNOON. SIX INCHES
FELL BETWEEN 600 PM SATURDAY TO 600 AM SUNDAY.

0700 AM HEAVY SNOW 2 SE MAY 44.58N 113.88W
05/23/2010 M4.0 INCH LEMHI ID CO-OP OBSERVER

0721 AM HEAVY SNOW 8 S BUTTE 45.89N 112.53W
05/23/2010 M6.0 INCH SILVER BOW MT TRAINED SPOTTER

0755 AM HEAVY SNOW 5 SW BUTTE 45.95N 112.60W
05/23/2010 M9.3 INCH SILVER BOW MT TRAINED SPOTTER

9.3 INCHES OF STORM TOTAL SNOW. 5 INCHES OF SNOW FELL IN
3 HOURS FROM 600 PM TO 900 PM SATURDAY EVENING.

0905 AM HEAVY SNOW 7 NW ANACONDA 46.20N 113.04W
05/23/2010 M4.4 INCH DEER LODGE MT TRAINED SPOTTER

STORM TOTAL SNOWFALL FROM APPROXIMATELY 730 PM SATURDAY
EVENING THROUGH 800 AM THIS MORNING.

&&

$$

DEROSA

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KABR [231449]: Preliminary Local Storm Report

NWUS53 KABR 231449
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
949 AM CDT SUN MAY 23 2010

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

0800 PM HAIL 6 S IPSWICH 45.36N 99.03W
05/22/2010 E1.00 INCH EDMUNDS SD PUBLIC

&&

$$

ATG

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KCAE [231426]: Preliminary Local Storm Report

NWUS52 KCAE 231426
LSRCAE

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
1026 AM EDT SUN MAY 23 2010

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

0730 PM HAIL 4 E ST. MATTHEWS 33.66N 80.71W
05/22/2010 E0.88 INCH CALHOUN SC COUNTY OFFICIAL

&&
NICKEL SIZED HAIL REPORTED BY COUNTY DISPATCH.
$$

DCM

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KIWX [231417]: Preliminary Local Storm Report

NWUS53 KIWX 231417
LSRIWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
1017 AM EDT SUN MAY 23 2010

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

0800 AM HEAVY RAIN SAINT JOE 41.32N 84.90W
05/22/2010 M6.25 INCH DE KALB IN PUBLIC

36 HOUR RAINFALL TOTAL ENDING SATURDAY MORNING. PUBLIC
REPORT FROM LOCAL NEWS WEBSITE.

&&

EVENT NUMBER IWX1000587

$$

NG

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KFGF [231353]: Preliminary Local Storm Report

NWUS53 KFGF 231353
LSRFGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
852 AM CDT SUN MAY 23 2010

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

1030 PM HAIL FORMAN 46.11N 97.64W
05/22/2010 E1.00 INCH SARGENT ND PUBLIC

ARB OBSERVER REPORTED DIME TO QUARTER SIZED HAIL FROM
1030PM TO 1035PM.

&&

$$

JKAISER

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KTFX [231330]: Preliminary Local Storm Report...summary

NWUS55 KTFX 231330
LSRTFX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GREAT FALLS MT
730 AM MDT SUN MAY 23 2010

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

0500 PM HEAVY SNOW 18 W GRANT 45.01N 113.43W
05/22/2010 M9.0 INCH BEAVERHEAD MT MESONET

12 HOUR SNOW ACCUMULATION LEMHI RIDGE SNOTEL ELEVATION
8100 FEET.

0200 AM HEAVY SNOW 14 S JACKSON 45.17N 113.41W
05/23/2010 M15.0 INCH BEAVERHEAD MT MESONET

BLOODY DICK SNOTEL SITE ELEVATION 7549 FEET 12 HR TOTAL

0500 AM HEAVY SNOW 15 SW JACKSON 45.21N 113.63W
05/23/2010 M15.0 INCH BEAVERHEAD MT MESONET

DARKHORSE LAKE SNOTEL - ELEVATION 8701 - 24 HR TOTAL

0500 AM HEAVY SNOW 19 S JACKSON 45.09N 113.41W
05/23/2010 M16.0 INCH BEAVERHEAD MT MESONET

LEMHI RIDGE SNOTEL SITE - ELEVATION 8100 -24 HR TOTAL

&&

$$

CZELZER

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KCTP [231259]: Preliminary Local Storm Report...corrected

NWUS51 KCTP 231259
LSRCTP

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE STATE COLLEGE PA
859 AM EDT SUN MAY 23 2010

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

0435 AM FLOOD 4 NNW GREENCASTLE 39.84N 77.76W
05/23/2010 FRANKLIN PA LAW ENFORCEMENT

WALL COLLAPSE...HOUSE FLOODED.

0439 AM FLASH FLOOD 2 W CHAMBERSBURG 39.93N 77.69W
05/23/2010 FRANKLIN PA LAW ENFORCEMENT

BACK CREEK FLOODED NEAR TWIN BRIDGES CAMPGROUND. 6 WATER
RESCUES...25 PEOPLE EVACUATED FROM CAMPGROUND. NO
INJURIES REPORTED.

0648 AM HEAVY RAIN 8 W CHAMBERSBURG 39.93N 77.81W
05/23/2010 E6.00 INCH FRANKLIN PA TRAINED SPOTTER

SPOTTER MEASURED 5 INCHES OF RAIN FROM 230 PM SATURDAY
UNTIL 651 AM SUNDAY...ESTIMATE IS MORE LIKE 6
INCHES...WAS USING A 5 INCH GAGE.

0805 AM FLASH FLOOD 8 W CHAMBERSBURG 39.93N 77.81W
05/23/2010 FRANKLIN PA EMERGENCY MNGR

EMERGENCY MANAGEMENT REPORTED EVACURATIONS AT SAINT
THOMAS AT 805 AM...DUE TO HEAVY RAIN.

&&

$$

DNM

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KPIH [231238]: Preliminary Local Storm Report

NWUS55 KPIH 231238
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
638 AM MDT SUN MAY 23 2010

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

0637 AM SNOW SW CHALLIS 44.50N 114.23W
05/23/2010 M5.0 INCH CUSTER ID TRAINED SPOTTER

STORM TOTAL FOR SNOW - 0.72 IN LIQUID EQUIVALENT

&&

$$

JKEYES

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KTFX [231238]: Preliminary Local Storm Report...corrected

NWUS55 KTFX 231238
LSRTFX

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GREAT FALLS MT
637 AM MDT SUN MAY 23 2010

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

0500 AM HEAVY SNOW 15 SW JACKSON 45.21N 113.63W
05/23/2010 M15.0 INCH BEAVERHEAD MT MESONET

DARKHORSE LAKE SNOTEL - ELEVATION 8701 - 24 HR TOTAL

&&

$$

DEMANUEL

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 231232
SWODY1
SPC AC 231231

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0731 AM CDT SUN MAY 23 2010

VALID 231300Z - 241200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS THE CENTRAL U.S. FROM MN
TO WEST TX...

...SYNOPSIS...
HIGHLY AMPLIFIED MID LEVEL FLOW PATTERN WILL CONTINUE ACROSS THE
CONUS WITH A SIGNIFICANT TROUGH DOMINATING THE WEST...AND A
DOWNSTREAM BLOCKING RIDGE TAKING FORM FROM THE MS VALLEY TO THE
GREAT LAKES. IN THE EAST...A WEAK CIRCULATION CENTER OVER PA/WV THIS
MORNING WILL SETTLE TOWARD THE MID ATLANTIC SEABOARD...EVENTUALLY
BECOMING ABSORBED INTO THE WRN FLANK OF LARGE OFFSHORE GYRE DRIFTING
WWD.

AS ONE STRONG DISTURBANCE IS EJECTED OUT OF THE WRN TROUGH AND LIFTS
INTO CNTRL CANADA...SHORT WAVE RIDGING AND HEIGHT RISES WILL DEVELOP
ATOP TRAILING FRONTAL ZONE FROM MN SWWD TO NRN KS. THE NEXT STRONG
SHORT WAVE WITHIN THE LARGER SCALE TROUGH WILL MOVE FROM SRN CA TO
THE FOUR CORNERS THIS PERIOD. HEIGHT FALLS AND STRENGTHENING
DEEP-LAYER SWLY/SLY FLOW WILL OVERSPREAD THE ROCKIES AND ADJACENT
HIGH PLAINS AND DRIVE CYCLOGENESIS OVER CO. RESULTANT SURFACE LOW
AND WARM FRONT WILL DEVELOP NWD FROM CO/KS LATE TODAY TO NEB/SD
BORDER AREA BY MONDAY MORNING. DIURNAL E-W OSCILLATIONS OF THE DRY
LINE...TRAILING SOUTH FROM ERN CO TO WEST TX...WILL REMAIN WITHIN A
NARROW RANGE GIVEN SIGNIFICANT MERIDIONAL COMPONENT TO THE LARGE
SCALE FLOW.

...UPPER MS VALLEY...
DESPITE LIMITED LARGE SCALE SUPPORT FOR ASCENT ALONG THE FRONT
MOVING INTO THIS AREA...RICH BOUNDARY LAYER MOISTURE /SURFACE
DEWPOINTS WELL INTO THE 60SF/ AND DIURNAL HEATING WILL CONTRIBUTE TO
MODEST TO LOCALLY STRONG DESTABILIZATION. IT SEEMS PROBABLE THAT
PERSISTENT CONVERGENCE ALONG THE FRONT...COMBINED WITH HEATING OF
THE DAY...MAY BE SUFFICIENT TO OVERCOME INHIBITION AND SUPPORT
SCATTERED CONVECTIVE INITIATION FROM THE ARROWHEAD OF MN SWD/SWWD
ACROSS MN/NWRN WI. STRONGER DEEP-LAYER SHEAR WILL LAG THE FRONTAL
ZONE BUT MAGNITUDE OF INSTABILITY SUGGESTS AT LEAST A LOW
PROBABILITY THREAT OF HAIL/WIND.

SEVERE WEATHER POTENTIAL MAY INCREASE AGAIN ACROSS WRN MN
LATE IN THE PERIOD AS THE NEXT SYSTEM APPROACHES AND LIFT ACROSS THE
WARM FRONT BRINGS ANOTHER CHANCE FOR DEEP CONVECTION.

...CNTRL PLAINS...
A DIFFICULT FORECAST CHALLENGE PRESENTS ITSELF ACROSS PARTS OF THE
PLAINS WHERE FRONTAL ZONE IS NOW STALLING FROM SERN CO TO NRN KS
BENEATH STRONG CAPPING INVERSION/EML. A WIDE ARRAY OF DETERMINISTIC
MODEL SOLUTIONS ARGUE THAT PREDICTABILITY IN THIS REGIME IS LOW.
LIFT ACROSS THE FRONT WILL INCREASE DURING THE SECOND HALF OF THE
FORECAST PERIOD AS SIGNIFICANT SHORT WAVE TROUGH APPROACHES AND MASS
ADJUSTMENT COMMENCES. UNTIL THEN...DESPITE PRONOUNCED DIURNAL
DESTABILIZATION...STRONG CAP AND WEAK/NEUTRAL HEIGHT FALLS MAY
PRECLUDE STORM INITIATION.

PROBABILITY OF THUNDERSTORMS INCREASES SUBSTANTIALLY BETWEEN 21Z AND
00Z NEAR AND NORTH OF TRIPLE POINT AND DEVELOPING WARM FRONT FROM
NWRN KS/ERN CO INTO NEB. MAGNITUDE OF INSTABILITY AND SHEAR IN THESE
AREAS WILL BE MORE THAN ADEQUATE FOR INTENSE/SUSTAINED CONVECTIVE
DEVELOPMENT. SUPERCELLS WITH TORNADO POTENTIAL APPEAR QUITE POSSIBLE
EARLY IN THIS DEVELOPMENT PROCESS...ESPECIALLY NEAR THE DEVELOPING
WARM FRONT FROM NWRN KS/SRN NEB NWWD TO EXTREME SERN WY. FAST NEWD
STORM MOTION SUGGESTS THAT SOME CELLS MAY MOVE FASTER THAN WARM
FRONTAL RETREAT ACROSS THESE AREAS...BECOMING DECOUPLED FROM
BOUNDARY LAYER INFLOW AND PRESENTING MORE OF A LARGE HAIL THREAT
WITH TIME.

SEVERE WEATHER THREAT IN THE FORM OF HAIL/WIND AND PERHAPS TORNADOES
IS FORECAST TO EXPAND NWD OVER THE NRN PLAINS AND ADJACENT HIGH
PLAINS THROUGH THE NIGHT AND INTO EARLY MONDAY AS STRONG FORCING FOR
ASCENT ACCOMPANYING VIGOROUS TROUGH SPREADS NWD/EWD...LOW LEVEL JET
INTENSIFIES...AND ABUNDANT INSTABILITY FUELS WIDESPREAD/ORGANIZED
CONVECTION.

...SRN HIGH PLAINS...
AT LEAST SCATTERED ROBUST CONVECTIVE DEVELOPMENT APPEARS LIKELY
ALONG EXTENSIVE DRY LINE FROM CO/KS BORDER TO NM/TX BORDER THROUGH
EARLY EVENING. STORMS WILL EXIST AMIDST CAPE AROUND 2000 J/KG AND
SUFFICIENT SHEAR FOR SUPERCELLS. THIS DEVELOPMENT IS LIKELY TO BE
SUSTAINED IN SOME FORM WELL AFTER DARK WITH THE APPROACH OF MORE
SUBSTANTIAL FORCING FOR ASCENT WITH THE UPPER TROUGH MOVING EAST.
THUS...THE PROBABILITY OF SEVERE HAIL AND WIND ACROSS THESE AREAS
HAS BEEN INCREASED IN THIS OUTLOOK.

...CAROLINAS...
SITUATION APPEARS SIMILAR TO YESTERDAY WITH PERHAPS SLIGHTLY GREATER
DESTABILIZATION POSSIBLE DUE TO HIGHER BOUNDARY LAYER THETA-E AND
COOLER TEMPS ALOFT. NWLY TO NLY FLOW OF 20-30KT AROUND THE BASE OF
WEAK CIRCULATION DROPPING SOUTH ACROSS THE AREA COULD RESULT IN A
COUPLE MORE ORGANIZED OR PERSISTENT CLUSTERS OF CONVECTION WITH SOME
HAIL AND DAMAGING WIND POTENTIAL.

..CARBIN/ROGERS.. 05/23/2010

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KTFX [231226]: Preliminary Local Storm Report

NWUS55 KTFX 231226
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
625 AM MDT SUN MAY 23 2010

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

0500 AM HEAVY SNOW 19 S JACKSON 45.09N 113.41W
05/23/2010 M16.0 INCH BEAVERHEAD MT MESONET

LEMHI RIDGE SNOTEL SITE - ELEVATION 8100 -24 HR TOTAL

&&

$$

DEMANUEL

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KTFX [231222]: Preliminary Local Storm Report

NWUS55 KTFX 231222
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
622 AM MDT SUN MAY 23 2010

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

0500 AM HEAVY SNOW 16 SW JACKSON 45.20N 113.64W
05/23/2010 M15.0 INCH LEMHI ID MESONET

DARKHORSE LAKE SNOTEL - ELEVATION 8701 - 24 HR TOTAL

&&

$$

DEMANUEL

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KFGF [231214]: Preliminary Local Storm Report...summary

NWUS53 KFGF 231214
LSRFGF

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
714 AM CDT SUN MAY 23 2010

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

0918 PM HAIL 9 SE COOPERSTOWN 47.35N 97.99W
05/22/2010 E0.88 INCH GRIGGS ND TRAINED SPOTTER

0948 PM HAIL 2 S BLABON 47.37N 97.79W
05/22/2010 E1.25 INCH STEELE ND PUBLIC

1000 PM HAIL 4 N STRAUBVILLE 46.10N 97.90W
05/22/2010 E1.00 INCH SARGENT ND PUBLIC

1010 PM HAIL GOLDEN LAKE 47.58N 97.64W
05/22/2010 E1.75 INCH STEELE ND TRAINED SPOTTER

1030 PM HAIL 2 NW HOLMES 47.74N 97.33W
05/22/2010 E1.00 INCH GRAND FORKS ND PUBLIC

1110 PM HAIL 4 N CAYUGA 46.13N 97.38W
05/22/2010 E1.00 INCH SARGENT ND TRAINED SPOTTER

1125 PM HAIL THIEF RIVER FALLS 48.11N 96.18W
05/22/2010 E0.75 INCH PENNINGTON MN TRAINED SPOTTER

1210 AM HAIL GREAT BEND 46.15N 96.80W
05/23/2010 E0.88 INCH RICHLAND ND LAW ENFORCEMENT

1215 AM HAIL ROSEAU 48.85N 95.76W
05/23/2010 E0.75 INCH ROSEAU MN TRAINED SPOTTER

1255 AM FLASH FLOOD 6 S FINLEY 47.42N 97.84W
05/23/2010 STEELE ND LAW ENFORCEMENT

THE STEELE COUNTY SHERIFF REPORTED 2 FEET OF GUSHING
WATER OVER STATE HIGHWAY 32 ABOUT 6 MILES SOUTH OF
FINLEY.

0152 AM FLASH FLOOD 6 S FINLEY 47.42N 97.84W
05/23/2010 STEELE ND EMERGENCY MNGR

HIGHWAY 32, 1 MILE SOUTH OF THE JUNCTION OF HIGHWAY 200
IS UNDER 3 FEET OF WATER FOR APPROXIMATELY 70 FEET
ACCORDING TO STEELE COUNTY SO.

&&

$$

GROCHOCINSKI

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KTFX [231148]: Preliminary Local Storm Report

NWUS55 KTFX 231148
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
548 AM MDT SUN MAY 23 2010

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

0200 AM HEAVY SNOW 14 S JACKSON 45.17N 113.41W
05/23/2010 M15.0 INCH BEAVERHEAD MT MESONET

12 HR TOTAL

&&

$$

DEMANUEL

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KMSO [231144]: Preliminary Local Storm Report...corrected

NWUS55 KMSO 231144
LSRMSO

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE MISSOULA MT
544 AM MDT SUN MAY 23 2010

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

0849 PM HEAVY SNOW 5 SW BUTTE 45.95N 112.60W
05/22/2010 M5.0 INCH SILVER BOW MT TRAINED SPOTTER

5 INCHES OF SNOW FELL IN 3 HOURS.

0541 AM HEAVY SNOW DIVIDE 45.75N 112.75W
05/23/2010 M7.0 INCH SILVER BOW MT TRAINED SPOTTER

SEVEN INCHES TOTAL SINCE SATURDAY AFTERNOON. SIX INCHES
FELL BETWEEN 6PM SATURDAY TO 6AM SUNDAY.

&&

$$

PALLISTE

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KCTP [231058]: Preliminary Local Storm Report...corrected

NWUS51 KCTP 231058
LSRCTP

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE STATE COLLEGE PA
657 AM EDT SUN MAY 23 2010

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

0435 AM FLOOD 4 NNW GREENCASTLE 39.84N 77.76W
05/23/2010 FRANKLIN PA LAW ENFORCEMENT

WALL COLLAPSE...HOUSE FLOODED.

0439 AM FLASH FLOOD 2 W CHAMBERSBURG 39.93N 77.69W
05/23/2010 FRANKLIN PA LAW ENFORCEMENT

BACK CREEK FLOODED NEAR TWIN BRIDGES CAMPGROUND. 6 WATER
RESCUES...25 PEOPLE EVACUATED FROM CAMPGROUND. NO
INJURIES REPORTED.

&&

$$

GAD

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KRAH [231001]: Preliminary Local Storm Report

NWUS52 KRAH 231001
LSRRAH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
601 AM EDT SUN MAY 23 2010

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

0820 PM FLASH FLOOD 1 SW GORDONTOWN 35.74N 80.13W
05/22/2010 DAVIDSON NC LAW ENFORCEMENT

REPORT OF BRIEF ROAD CLOSURE DUE TO FLOODING ALONG OLD
HIGHWAY 75 NEAR THE SILVER VALLEY COMMUNITY.

&&

$$

DJF

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KRAH [230945]: Preliminary Local Storm Report

NWUS52 KRAH 230945
LSRRAH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
545 AM EDT SUN MAY 23 2010

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

0655 PM TSTM WND DMG 2 SE BETHEL HILL 36.48N 78.86W
05/22/2010 PERSON NC LAW ENFORCEMENT

TREES BLOWN DOWN NEAR THE TRIPLE SPRINGS COMMUNITY. TIME
ESTIMATED.

&&

$$

DJF

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KCTP [230942]: Preliminary Local Storm Report...corrected

NWUS51 KCTP 230942
LSRCTP

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE STATE COLLEGE PA
542 AM EDT SUN MAY 23 2010

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

0435 AM FLOOD 4 NNW GREENCASTLE 39.84N 77.76W
05/23/2010 FRANKLIN PA LAW ENFORCEMENT

WALL COLLAPSE...HOUSE FLOODED.

0439 AM FLASH FLOOD 2 W CHAMBERSBURG 39.93N 77.69W
05/23/2010 FRANKLIN PA LAW ENFORCEMENT

FLOODING AND WATER RESCUES AT CAMPGROUND IN HAMILTON
TOWNSHIP.

&&

$$

GAD

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KCTP [230928]: Preliminary Local Storm Report

NWUS51 KCTP 230928
LSRCTP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
528 AM EDT SUN MAY 23 2010

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

0435 AM FLOOD 4 NNW GREENCASTLE 39.84N 77.76W
05/23/2010 FRANKLIN PA LAW ENFORCEMENT

WALL COLLAPSE...HOUSE FLOODED.

0439 AM FLASH FLOOD 1 NE NEW OXFORD 39.87N 77.04W
05/23/2010 ADAMS PA LAW ENFORCEMENT

FLOODING AND WATER RESCUES AT CAMPGROUND IN HAMILTON
TOWNSHIP.

&&

$$

GAD

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WATCHES: Severe Thunderstorm Watch - Number 205

WWUS20 KWNS 230903
SEL5
SPC WW 230903
MNZ000-SDZ000-230900-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH - NUMBER 205
NWS STORM PREDICTION CENTER NORMAN OK
403 AM CDT SUN MAY 23 2010

THE NWS STORM PREDICTION CENTER HAS CANCELLED
SEVERE THUNDERSTORM WATCH NUMBER 205 ISSUED AT 1130 PM CDT FOR PORTIONS OF

MINNESOTA
SOUTH DAKOTA

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WATCHES: Severe Thunderstorm Watch - Number 204

WWUS20 KWNS 230903
SEL4
SPC WW 230903
MNZ000-NDZ000-230900-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH - NUMBER 204
NWS STORM PREDICTION CENTER NORMAN OK
403 AM CDT SUN MAY 23 2010

THE NWS STORM PREDICTION CENTER HAS CANCELLED
SEVERE THUNDERSTORM WATCH NUMBER 204 ISSUED AT 900 PM CDT FOR PORTIONS OF

MINNESOTA
NORTH DAKOTA

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 230854
SWOD48
SPC AC 230854

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0354 AM CDT SUN MAY 23 2010

VALID 261200Z - 311200Z

...POTENTIAL FOR A REGIONAL SEVERE WEATHER EVENT APPEARS LOW...

MEDIUM RANGE MODELS CONTINUE TO SUGGEST THAT THE LARGE SCALE PATTERN
WILL REMAIN GENERALLY UNSUPPORTIVE OF A SIGNIFICANT ORGANIZED OR
REGIONAL SEVERE WEATHER EVENT DURING THE MIDDLE TO LATTER PORTIONS
OF THE COMING WORK WEEK. BUT THERE ARE INDICATIONS THAT AN
INTENSIFYING ZONAL BELT OF WESTERLIES MAY EVOLVE ACROSS THE PACIFIC
AND BEGIN TO NOSE TOWARD THE PACIFIC COAST DURING THE MEMORIAL DAY
WEEKEND. HOWEVER...VARIABILITY EXISTS CONCERNING THIS
DEVELOPMENT...AND ITS INFLUENCE ON A DOWNSTREAM CLOSED LOW/TROUGH
NEAR THE PACIFIC COAST...WHICH COULD ACCELERATE INLAND AND ACROSS
THE ROCKIES IN A MANNER THAT COULD SUPPORT INCREASING SEVERE
POTENTIAL...PARTICULARLY FROM PARTS OF THE NORTHERN PLAINS EASTWARD
INTO THE UPPER GREAT LAKES REGION BY LATE NEXT SUNDAY. GIVEN
INHERENT UNCERTAINTIES ASSOCIATED WITH THE DAY 7-8 EXTENDED TIME
FRAME.../LOW POTENTIAL/ CATEGORIZATION WILL BE MAINTAINED FOR THIS
PERIOD VERSUS /PREDICTABILITY TOO LOW/.

..KERR.. 05/23/2010

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KABR [230840]: Preliminary Local Storm Report...summary

NWUS53 KABR 230840
LSRABR

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE ABERDEEN SD
340 AM CDT SUN MAY 23 2010

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

0545 PM HAIL 10 S SELBY 45.36N 100.03W
05/22/2010 E0.88 INCH WALWORTH SD LAW ENFORCEMENT

REPORTED BY DEPUTY 631B

0550 PM HAIL 10 S SELBY 45.36N 100.03W
05/22/2010 E1.00 INCH WALWORTH SD LAW ENFORCEMENT

0605 PM HAIL 3 E SELBY 45.50N 99.97W
05/22/2010 E1.00 INCH WALWORTH SD LAW ENFORCEMENT

0613 PM HAIL 2 SSE JAVA 45.48N 99.87W
05/22/2010 E1.00 INCH WALWORTH SD TRAINED SPOTTER

0616 PM TORNADO 8 W BOWDLE 45.45N 99.82W
05/22/2010 WALWORTH SD TRAINED SPOTTER

REPORTED BY NUMEROUS TRAINED SPOTTERS

0621 PM TORNADO 5 W BOWDLE 45.45N 99.76W
05/22/2010 WALWORTH SD TRAINED SPOTTER

TRAINED SPOTTER REPORTS TWO TORNADOS ON THE GROUND IN THE
SAME LOCATION

0630 PM TORNADO 5 NW BOWDLE 45.50N 99.73W
05/22/2010 WALWORTH SD EMERGENCY MNGR

LARGE TORNADO ON GROUND. POWERLINE DAMAGE ON HIGHWAY 47
1.5 MILES SOUTH OF HIGHWAY 12. ROAD IMPASSIBLE.

0635 PM TORNADO 3 W HOSMER 45.58N 99.54W
05/22/2010 EDMUNDS SD TRAINED SPOTTER

TRAINED SPOTTER REPORTS LARGE WEDGE TORNADO ON THE GROUND

0640 PM TORNADO 4 SW HOSMER 45.54N 99.53W
05/22/2010 EDMUNDS SD TRAINED SPOTTER

SPOTTER WAS LOCATED 4 SOUTH AND 4 WEST OF HOSMER

0641 PM TORNADO 3 N BOWDLE 45.50N 99.66W
05/22/2010 EDMUNDS SD EMERGENCY MNGR

LARGE WEDGE TORNADO ON GROUND CROSSING HIGHWAY 47.

0645 PM TORNADO 1 N BOWDLE 45.47N 99.66W
05/22/2010 EDMUNDS SD EMERGENCY MNGR

EDMUNDS COUNTY EMERGENCY MANGER REPORTED MAJOR TORNADO
DAMAGE TO POWER LINES AND FARMS IN THE BOWDLE AREA.

0715 PM HAIL HOSMER 45.58N 99.47W
05/22/2010 E1.00 INCH EDMUNDS SD TRAINED SPOTTER

0804 PM TORNADO 5 NE IPSWICH 45.50N 98.96W
05/22/2010 EDMUNDS SD STORM CHASER

STORM CHASERS REPORT TORNADOS ON THE GROUND 3 TO 5 MILES
NORTHEAST OF IPSWICH

0821 PM HAIL IPSWICH 45.44N 99.03W
05/22/2010 E1.00 INCH EDMUNDS SD NWS EMPLOYEE

FELL FOR 10 MINUTES.

0825 PM HAIL IPSWICH 45.44N 99.03W
05/22/2010 E1.00 INCH EDMUNDS SD PUBLIC

0830 PM TORNADO WETONKA 45.62N 98.77W
05/22/2010 MCPHERSON SD BROADCAST MEDIA

KSFY STORM CHASERS REPORTED LARGE RAIN WRAPPED TORNADO IN
THE WETONKA AREA.

0834 PM FUNNEL CLOUD 3 E FAULKTON 45.03N 99.07W
05/22/2010 FAULK SD TRAINED SPOTTER

SPOTTER IS LOCATED 3 MILES EAST OF FAULKTON AND THE
FUNNELCLOUD IS LOCATED 3 MILES SOUTH WEST OF SPOTTER
LOCATION

0838 PM FUNNEL CLOUD 6 SW CRESBARD 45.11N 99.03W
05/22/2010 FAULK SD TRAINED SPOTTER

SPOTTER IS LOCATED 6 MILES SOUTHWEST OF CRESBARD

0845 PM FUNNEL CLOUD 2 SW BARNARD 45.71N 98.53W
05/22/2010 BROWN SD STORM CHASER

STORM CHASER REPORTS A FUNNEL CLOUD 1 MILE WEST OF 281 ON
HWY 10

0848 PM TSTM WND DMG 8 WNW WESTPORT 45.69N 98.65W
05/22/2010 BROWN SD LAW ENFORCEMENT

AT 377TH AVENUE AND 117TH STREET TWO VERY LARGE TREES
WERE UPROOTED AND HAD FALLEN ACROSS THE ROAD. ONE FARMER
HAD BARN DOORS RIPPED OFF WITH A HORSE TRAILER BEING
MOVED 150 FEET. ANOTHER FARMER HAD MAJOR DAMAGE TO
SEVERAL OUTBUILDINGS TO THE ROOFS AND SIDES.

0935 PM HAIL 1 NE STEPHAN 44.26N 99.44W
05/22/2010 E1.00 INCH HYDE SD TRAINED SPOTTER

NICKEL AND QUARTER SIZE HAIL...40 MPH WINDS AND HEAVY
RAIN

0945 PM HAIL WARNER 45.32N 98.50W
05/22/2010 E1.25 INCH BROWN SD LAW ENFORCEMENT

0953 PM HAIL ABERDEEN 45.47N 98.48W
05/22/2010 M1.00 INCH BROWN SD NWS EMPLOYEE

1003 PM HAIL BATH 45.47N 98.32W
05/22/2010 E1.00 INCH BROWN SD TRAINED SPOTTER

1027 PM HAIL 1 S REDFIELD 44.86N 98.52W
05/22/2010 E1.75 INCH SPINK SD STORM CHASER

1143 PM TSTM WND GST ROSLYN 45.50N 97.49W
05/22/2010 E60.00 MPH DAY SD FIRE DEPT/RESCUE

1150 PM HAIL 4 E VEBLEN 45.86N 97.20W
05/22/2010 E1.50 INCH ROBERTS SD LAW ENFORCEMENT

ALSO MEASURED 42MPH WIND WITH THE HAIL

&&

$$

AP

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KPIH [230824]: Preliminary Local Storm Report

NWUS55 KPIH 230824
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
224 AM MDT SUN MAY 23 2010

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

0221 AM SNOW CHALLIS 44.51N 114.22W
05/23/2010 E7.0 INCH CUSTER ID PUBLIC

SNOW ACCUMULATION SINCE SATURDAY EVENING IS 7 INCHES.
SNOWING VERY LIGHTLY AT THIS TIME.

&&

$$

RSURVICK

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KGJT [230803]: Preliminary Local Storm Report

NWUS55 KGJT 230803
LSRGJT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
202 AM MDT SUN MAY 23 2010

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

0343 PM NON-TSTM WND GST CORTEZ 37.35N 108.58W
05/22/2010 M49 MPH MONTEZUMA CO ASOS

&&

EVENT NUMBER GJT1000580

$$

MCS

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KGJT [230802]: Preliminary Local Storm Report

NWUS55 KGJT 230802
LSRGJT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
201 AM MDT SUN MAY 23 2010

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

0526 PM NON-TSTM WND GST ASPEN 39.19N 106.83W
05/22/2010 M46 MPH PITKIN CO ASOS

&&

EVENT NUMBER GJT1000579

$$

MCS

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KGJT [230800]: Preliminary Local Storm Report

NWUS55 KGJT 230800
LSRGJT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
200 AM MDT SUN MAY 23 2010

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

1227 PM NON-TSTM WND GST RIFLE 39.54N 107.78W
05/22/2010 M49 MPH GARFIELD CO ASOS

&&

EVENT NUMBER GJT1000578

$$

MCS

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KGJT [230759]: Preliminary Local Storm Report

NWUS55 KGJT 230759
LSRGJT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
159 AM MDT SUN MAY 23 2010

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

1111 AM NON-TSTM WND GST MEEKER 40.05N 107.89W
05/22/2010 M58 MPH RIO BLANCO CO ASOS

&&

EVENT NUMBER GJT1000577

$$

MCS

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KGJT [230758]: Preliminary Local Storm Report

NWUS55 KGJT 230758
LSRGJT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
158 AM MDT SUN MAY 23 2010

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

0419 PM NON-TSTM WND GST CANYONLANDS NP 38.40N 109.88W
05/22/2010 M47 MPH SAN JUAN UT ASOS

&&

EVENT NUMBER GJT1000576

$$

MCS

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KGJT [230758]: Preliminary Local Storm Report

NWUS55 KGJT 230758
LSRGJT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
157 AM MDT SUN MAY 23 2010

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

0440 PM NON-TSTM WND GST DURANGO 37.29N 107.87W
05/22/2010 M45 MPH LA PLATA CO ASOS

&&

EVENT NUMBER GJT1000575

$$

MCS

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KGJT [230756]: Preliminary Local Storm Report

NWUS55 KGJT 230756
LSRGJT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
156 AM MDT SUN MAY 23 2010

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

1211 PM NON-TSTM WND GST GRAND JUNCTION 39.09N 108.55W
05/22/2010 M49 MPH MESA CO ASOS

&&

EVENT NUMBER GJT1000574

$$

MCS

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