Friday, April 5, 2013

KRNK [051418]: Preliminary Local Storm Report

NWUS51 KRNK 051418
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1018 AM EDT FRI APR 05 2013

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

0200 PM SNOW 6 W MOUNT AIRY 36.50N 80.72W
04/04/2013 E2.0 INCH SURRY NC PUBLIC

0200 PM SLEET 6 W MOUNT AIRY 36.50N 80.72W
04/04/2013 E0.5 INCH SURRY NC PUBLIC

0200 PM FREEZING RAIN 6 W MOUNT AIRY 36.50N 80.72W
04/04/2013 E0.00 INCH SURRY NC PUBLIC


&&

EVENT NUMBER RNK1301311
EVENT NUMBER RNK1301312
EVENT NUMBER RNK1301313

$$

WHP

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KRNK [051414]: Preliminary Local Storm Report

NWUS51 KRNK 051414
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1013 AM EDT FRI APR 05 2013

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

0800 PM SNOW 5 S STEWARTSVILLE 37.20N 79.81W
04/04/2013 E1.0 INCH FRANKLIN VA TRAINED SPOTTER


&&

EVENT NUMBER RNK1301310

$$

HYSELL

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KRNK [051413]: Preliminary Local Storm Report

NWUS51 KRNK 051413
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1013 AM EDT FRI APR 05 2013

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

0800 PM SNOW 6 S GOODVIEW 37.14N 79.72W
04/04/2013 E2.0 INCH FRANKLIN VA TRAINED SPOTTER


&&

EVENT NUMBER RNK1301309

$$

HYSELL

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KRNK [051411]: Preliminary Local Storm Report

NWUS51 KRNK 051411
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1011 AM EDT FRI APR 05 2013

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

0800 PM SNOW 3 ENE CALLAWAY 37.03N 80.00W
04/04/2013 E1.0 INCH FRANKLIN VA TRAINED SPOTTER


&&

EVENT NUMBER RNK1301308

$$

HYSELL

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KRNK [051406]: Preliminary Local Storm Report

NWUS51 KRNK 051406
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1006 AM EDT FRI APR 05 2013

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

0800 PM SNOW 1 SW SOUTHERN SMITH MOU 37.00N 79.66W
04/04/2013 M2.3 INCH FRANKLIN VA TRAINED SPOTTER


&&

EVENT NUMBER RNK1301307

$$

HYSELL

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KRNK [051337]: Preliminary Local Storm Report

NWUS51 KRNK 051337
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
937 AM EDT FRI APR 05 2013

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

0800 PM SNOW 3 NNW BOONES MILL 37.16N 79.98W
04/04/2013 E1.8 INCH ROANOKE VA TRAINED SPOTTER


&&

EVENT NUMBER RNK1301306

$$

HYSELL

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KRNK [051336]: Preliminary Local Storm Report

NWUS51 KRNK 051336
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
936 AM EDT FRI APR 05 2013

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

0800 PM SNOW 1 ENE GLENVAR 37.28N 80.13W
04/04/2013 E2.0 INCH ROANOKE VA TRAINED SPOTTER


&&

EVENT NUMBER RNK1301305

$$

HYSELL

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KRNK [051335]: Preliminary Local Storm Report

NWUS51 KRNK 051335
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
935 AM EDT FRI APR 05 2013

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

0800 PM SNOW CATAWBA 37.39N 80.11W
04/04/2013 M5.3 INCH ROANOKE VA TRAINED SPOTTER

SNOW AND SLEET MIX.


&&

EVENT NUMBER RNK1301304

$$

HYSELL

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KRNK [051316]: Preliminary Local Storm Report

NWUS51 KRNK 051316
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
916 AM EDT FRI APR 05 2013

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

0900 PM SNOW 3 NW FINCASTLE 37.53N 79.92W
04/04/2013 E3.0 INCH BOTETOURT VA TRAINED SPOTTER

SNOW AND SLEET MIX.


&&

EVENT NUMBER RNK1301303

$$

HYSELL

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KRNK [051315]: Preliminary Local Storm Report

NWUS51 KRNK 051315
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
915 AM EDT FRI APR 05 2013

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

0900 PM SNOW 6 NW DALEVILLE 37.49N 79.99W
04/04/2013 E3.0 INCH BOTETOURT VA TRAINED SPOTTER

SNOW MIXED WITH SLEET


&&

EVENT NUMBER RNK1301302

$$

HYSELL

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KRNK [051314]: Preliminary Local Storm Report

NWUS51 KRNK 051314
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
914 AM EDT FRI APR 05 2013

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

0900 PM SNOW 4 W GALA 37.69N 79.89W
04/04/2013 E1.5 INCH BOTETOURT VA TRAINED SPOTTER


&&

EVENT NUMBER RNK1301301

$$

HYSELL

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KRNK [051251]: Preliminary Local Storm Report...corrected

NWUS51 KRNK 051251
LSRRNK

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BLACKSBURG VA
851 AM EDT FRI APR 05 2013

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

0621 PM SNOW HIX 37.72N 80.82W
04/04/2013 E3.0 INCH SUMMERS WV DEPT OF HIGHWAYS


&&

CORRECTED EVENT

EVENT NUMBER RNK1301236

$$

WHP

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KRNK [051247]: Preliminary Local Storm Report...corrected

NWUS51 KRNK 051247
LSRRNK

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BLACKSBURG VA
847 AM EDT FRI APR 05 2013

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

0848 PM SNOW UNION 37.58N 80.53W
04/04/2013 M2.0 INCH MONROE WV DEPT OF HIGHWAYS


&&

CORRECTED COUNTY/STATE...LOCATION

EVENT NUMBER RNK1301288

$$

WHP

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KRNK [051244]: Preliminary Local Storm Report...corrected

NWUS51 KRNK 051244
LSRRNK

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BLACKSBURG VA
844 AM EDT FRI APR 05 2013

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

0845 PM SNOW 1 W NEW CASTLE 37.50N 80.13W
04/04/2013 M5.5 INCH CRAIG VA PUBLIC


&&

CORRECTED COUNTY/STATE...LOCATION

EVENT NUMBER RNK1301287

$$

WHP

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KRNK [051243]: Preliminary Local Storm Report...corrected

NWUS51 KRNK 051243
LSRRNK

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BLACKSBURG VA
843 AM EDT FRI APR 05 2013

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

0844 PM SNOW RADFORD 37.13N 80.57W
04/04/2013 M5.0 INCH CITY OF RADFORD VA TRAINED SPOTTER


&&

CORRECTED COUNTY/STATE...LOCATION

EVENT NUMBER RNK1301286

$$

WHP

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KRNK [051241]: Preliminary Local Storm Report

NWUS51 KRNK 051241
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
841 AM EDT FRI APR 05 2013

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

0930 PM SNOW MAYBROOK 37.30N 80.54W
04/04/2013 E5.0 INCH GILES VA PUBLIC


&&

EVENT NUMBER RNK1301300

$$

WHP

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 051239
SWODY1
SPC AC 051237

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0737 AM CDT FRI APR 05 2013

VALID 051300Z - 061200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...

THE LARGE-SCALE PATTERN WILL UNDERGO DE-AMPLIFICATION DURING THE D1
PERIOD IN THE WAKE OF POLAR AND SUBTROPICAL BRANCH SHORT-WAVE
TROUGHS MOVING OFF THE ATLANTIC COAST. A NUMBER OF VORTICITY MAXIMA
WILL TRANSLATE EWD FROM THE ERN PACIFIC AND INTERMOUNTAIN WEST
WITHIN THIS INCREASINGLY ZONAL FLOW REGIME...THE MOST NOTABLE OF
WHICH WILL TRACK FROM THE PACIFIC NW INTO THE DAKOTAS AND UPPER MS
VALLEY BY SATURDAY MORNING.

IN THE LOW LEVELS...THE COLD FRONT ASSOCIATED WITH THE SERN U.S.
SHORT-WAVE TROUGH WILL MOVE EWD/SEWD THROUGH THE FL PENINSULA.
FARTHER TO THE NW...A MIGRATORY SURFACE CYCLONE WILL DEVELOP ALONG
AN ATTENDANT BAROCLINIC ZONE FROM THE NRN HIGH PLAINS TO UPPER MS
VALLEY.

...FL...

NOCTURNAL TSTMS OVER S FL HAVE GENERATED AN OUTFLOW BOUNDARY WHICH
IS SETTLING SWD THROUGH THE FL STRAITS...DISPLACING A HIGHER THETA-E
BOUNDARY LAYER TO THE S OF THE REGION. 12Z SOUNDINGS FROM
TAMPA...MIAMI...AND KEY WEST INDICATE WEAK LAPSE RATES...WHICH WHEN
COUPLED WITH THE WIDESPREAD CLOUDS...WILL LIMIT AIR MASS
DESTABILIZATION AHEAD OF THE COLD FRONT TODAY. THUS...WHILE A FEW
STRONG STORMS REMAIN POSSIBLE ALONG AND AHEAD OF THE FRONT...THE
LIMITED INSTABILITY AND VEERED...AND GRADUALLY WEAKENING...LOW-LEVEL
WINDS ARE EXPECTED TO PRECLUDE THE THREAT FOR SEVERE WEATHER.

...NRN INTERMOUNTAIN REGION TO NRN/CNTRL HIGH PLAINS...

STEEP LOW TO MIDLEVEL LAPSE RATES AND FORCING FOR ASCENT ATTENDANT
TO THE SHORT-WAVE TROUGH MENTIONED IN THE SYNOPSIS WILL FOSTER
WIDELY SCATTERED TSTMS THIS AFTERNOON INTO TONIGHT FROM W-E ACROSS
THE REGION. THE PRESENCE OF A RELATIVELY DRY AIR MASS WILL LIMIT
THE DEGREE OF INSTABILITY AND NO SEVERE WEATHER IS ANTICIPATED.

..MEAD/JIRAK.. 04/05/2013

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KRNK [051236]: Preliminary Local Storm Report

NWUS51 KRNK 051236
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
836 AM EDT FRI APR 05 2013

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

0600 PM SNOW 4 WNW ELLISTON 37.24N 80.29W
04/04/2013 E4.7 INCH MONTGOMERY VA TRAINED SPOTTER


&&

EVENT NUMBER RNK1301299

$$

WHP

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KRNK [051230]: Preliminary Local Storm Report

NWUS51 KRNK 051230
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
830 AM EDT FRI APR 05 2013

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

0700 PM SNOW 3 WNW SHAWSVILLE 37.19N 80.32W
04/04/2013 M6.5 INCH MONTGOMERY VA FOREST SERVICE


&&

EVENT NUMBER RNK1301298

$$

WHP

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KMFL [051214]: Preliminary Local Storm Report

NWUS52 KMFL 051214
LSRMFL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
814 AM EDT FRI APR 05 2013

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

0510 PM MARINE TSTM WIND 3 SE JUPITER 26.90N 80.07W
04/04/2013 M43.00 MPH PALM BEACH FL MESONET

MEASURED AT WEATHERFLOW SITE IN JUPITER.

0600 PM MARINE TSTM WIND 6 S DEERFIELD BEACH 26.23N 80.09W
04/04/2013 M43.00 MPH BROWARD FL MESONET

MEASURED AT WEATHERFLOW SITE IN POMPANO BEACH.

0605 PM MARINE TSTM WIND 3 SE FORT LAUDERDALE 26.09N 80.12W
04/04/2013 M47.00 MPH BROWARD FL MESONET

MEASURED AT WEATHERFLOW SITE IN PORT EVERGLADES AT AN
ELEVATION OF 135 FEET.

0625 PM MARINE TSTM WIND 5 SSE FORT LAUDERDALE 26.06N 80.11W
04/04/2013 M39.00 MPH BROWARD FL MESONET

MEASURED AT WEATHERFLOW SITE AT DANIA PIER.

0155 AM MARINE TSTM WIND 4 ESE CORAL GABLES 25.71N 80.21W
04/05/2013 M39.00 MPH AMZ630 FL MESONET

MEASURED AT WEATHERFLOW SITE OVER BISCAYNE BAY EAST OF
COCONUT GROVE.

0201 AM MARINE TSTM WIND 3 NNE KEY BISCAYNE 25.73N 80.15W
04/05/2013 M43.00 MPH MIAMI-DADE FL MESONET

MEASURED AT WEATHERFLOW SITE ON VIRGINIA KEY.

0430 AM NON-TSTM WND GST 6 E BUCKHEAD RIDGE 27.14N 80.79W
04/05/2013 M43.00 MPH AMZ610 FL MESONET

MEASURED AT SOUTH FLORIDA WATER MANAGEMENT SITE L001 IN
NORTHERN LAKE OKEECHOBEE. SUSTAINED WIND 38 MPH. POSSIBLY
DUE TO WAKE LOW FEATURE.

0603 AM NON-TSTM WND GST NAPLES 26.14N 81.80W
04/05/2013 M45.00 MPH COLLIER FL ASOS

MEASURED AT ASOS SITE KAPF AT NAPLES AIRPORT. POSSIBLY
RELATED TO WAKE LOW FEATURE.


&&

$$

MOLLEDA

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KMFR [051209]: Preliminary Local Storm Report

NWUS56 KMFR 051209
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
508 AM PDT FRI APR 5 2013

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

0505 AM HEAVY RAIN GOLD BEACH 42.41N 124.42W
04/05/2013 M1.48 INCH CURRY OR TRAINED SPOTTER

HEAVY RAIN DURATION 24 HOURS

&&

$$

IRIS SYSTEM

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KKEY [051033]: Preliminary Local Storm Report

NWUS52 KKEY 051033
LSRKEY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
633 AM EDT FRI APR 05 2013

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

0255 AM TSTM WND GST 1 E KEY WEST 24.56N 81.76W
04/05/2013 M39 MPH LOWER KEYS IN MONR FL MESONET

A WIND GUST OF 34 KTS WAS REPORTED BY THE RSOIS WEATHER
INSTRUMENT AT THE KEY WEST WEATHER FORECAST OFFICE.


&&

$$

MPARKE

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KKEY [051016]: Preliminary Local Storm Report

NWUS52 KKEY 051016
LSRKEY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
616 AM EDT FRI APR 05 2013

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

0501 AM MARINE TSTM WIND 8 SSE KEY LARGO 25.00N 80.39W
04/05/2013 M39 MPH GMZ052 FL C-MAN STATION

A THUNDERSTORM WIND GUST OF 34 KNOTS WAS REPORTED BY
MOLASSES REEF LIGHT C-MAN STATION.


&&

$$

11

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KKEY [050927]: Preliminary Local Storm Report

NWUS52 KKEY 050927
LSRKEY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
527 AM EDT FRI APR 05 2013

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

0427 AM MARINE TSTM WIND 8 SSE KEY LARGO 25.00N 80.39W
04/05/2013 M43 MPH GMZ052 FL C-MAN STATION

A THUNDERSTORM WIND GUST OF 37 KNOTS WAS REPORTED BY
MOLASSES REEF LIGHT C-MAN STATION.


&&

$$

11

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 050854
SWOD48
SPC AC 050854

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0354 AM CDT FRI APR 05 2013

VALID 081200Z - 131200Z

...DISCUSSION...
...SEVERE WEATHER APPEARS LIKELY EARLY NEXT WEEK FROM THE CNTRL/SRN
PLAINS TO THE MID/LOWER MS VALLEY...

WHILE RICH GULF MOISTURE HAS BECOME CONFINED TO THE SWRN PORTION OF
THE BASIN IN THE WAKE OF A COLD FRONT THAT HAS REACHED THE YUCATAN
PENINSULA...AIR MASS MODIFICATION WILL OCCUR THIS WEEKEND AND
ESPECIALLY EARLY NEXT WEEK AHEAD OF AN AMPLIFIED UPPER-LEVEL TROUGH
OVER THE WEST. THE WRN TROUGH WILL EJECT INTO THE CNTRL CONUS BY
MID-WEEK AS A POTENT MID-LEVEL JET STREAK ROUNDS THE BASE OF THE
TROUGH. BY THIS TIME...SEASONABLY RICH GULF MOISTURE WILL BE PRESENT
ALONG THE DRYLINE AND EVENTUAL COLD FRONT THAT WILL PUSH EWD TOWARDS
THE MS VALLEY. WITH SEVERAL DAYS OF MOISTURE RETURN OCCURRING
BENEATH A STOUT EML...A MODERATE TO STRONGLY UNSTABLE AIR MASS WILL
LIKELY DEVELOP.

DESPITE AVERAGE DIFFERENCES BETWEEN MODELS WITH REGARD TO
TIMING/PLACEMENT OF THE KEY SYNOPTIC FEATURES BY D5-6...INCREASING
FORCING FOR ASCENT ALONG WITH STEEP MID-LEVEL LAPSE RATES AND
STRENGTHENING DEEP-LAYER SHEAR SHOULD RENDER A SETUP FAVORABLE FOR
POTENTIALLY SIGNIFICANT AND WIDESPREAD SEVERE WEATHER DURING THIS
TIME FRAME. GREATEST DISCRETE SUPERCELL POTENTIAL WITH PRIMARILY
VERY LARGE HAIL AND TORNADOES SHOULD EXIST ON D5 AHEAD OF THE
DRYLINE. AS A PACIFIC COLD FRONT MERGES WITH THE DRYLINE...AN
EXTENSIVE SQUALL LINE SHOULD FORM AND DEVELOP EWD TOWARDS THE MS
VALLEY WITH PRIMARY RISKS BECOMING DAMAGING WINDS AND TORNADOES ON
D6. PRIOR TO D5...A LOCALIZED BUT ENHANCED RISK FOR VERY LARGE
HAIL/FEW TORNADOES SHOULD EXIST NEAR THE DRYLINE/WARM FRONT
INTERSECTION EXPECTED TO BE INVOF NWRN KS ON MON EVENING.

..GRAMS.. 04/05/2013

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KKEY [050830]: Preliminary Local Storm Report

NWUS52 KKEY 050830
LSRKEY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
430 AM EDT FRI APR 05 2013

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

0414 AM TSTM WND GST 1 E UPPER MATECUMBE KEY 24.92N 80.64W
04/05/2013 M41 MPH MONROE/UPPER KEYS FL MESONET

A THUNDERSTORM WIND GUST OF 36 KNOTS WAS REPORTED BY A
WEATHER FLOW STATION LOCATED ON A TOWER NEXT TO BERNARD
RUSSELL FIRE STATION 20.


&&

$$

11

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KKEY [050819]: Preliminary Local Storm Report

NWUS52 KKEY 050819
LSRKEY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
419 AM EDT FRI APR 05 2013

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

1240 AM TSTM WND GST N KEY LARGO 25.11N 80.44W
04/05/2013 M41 MPH MONROE/UPPER KEYS FL MESONET

A THUNDERSTORM WIND GUST OF 36 KNOTS WAS REPORTED BY A
WEATHER FLOW STATION LOCATED IN SOUTH KEY LARGO.


&&

$$

11

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KKEY [050804]: Preliminary Local Storm Report

NWUS52 KKEY 050804
LSRKEY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
404 AM EDT FRI APR 05 2013

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

0352 AM TSTM WND GST 1 E LONG KEY 24.82N 80.82W
04/05/2013 M43 MPH MIDDLE KEYS IN MON FL MESONET

A THUNDERSTORM WIND GUST OF 37 KNOTS WAS REPORTED BY THE
DAVIS WEATHER STATION AT THE FLORIDA KEYS ACQUEDUCT
AUTHORITY PUMPING STATION ON LONG KEY.


&&

$$

11

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KRNK [050748]: Preliminary Local Storm Report...corrected

NWUS51 KRNK 050748
LSRRNK

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BLACKSBURG VA
348 AM EDT FRI APR 05 2013

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

1100 PM SNOW FRIES 36.72N 80.98W
04/04/2013 M4.0 INCH GRAYSON VA TRAINED SPOTTER


&&

CORRECTED EVENT TIME...EVENT

EVENT NUMBER RNK1301199

$$

16

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KKEY [050726]: Preliminary Local Storm Report

NWUS52 KKEY 050726
LSRKEY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
326 AM EDT FRI APR 05 2013

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

0245 AM MARINE TSTM WIND 14 NW KEY WEST 24.71N 81.93W
04/05/2013 M43 MPH GMZ033 FL MESONET

THE WEATHER FLOW ANEMOMETER LOCATED ON SMITH SHOAL LIGHT
REPORTED A 37 KT WIND GUST ASSOCIATED WITH THE OUTFLOW OF
A LINE OF THUNDERSTORMS.


&&

$$

11

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 050715
SWODY3
SPC AC 050714

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0214 AM CDT FRI APR 05 2013

VALID 071200Z - 081200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
AN UPPER-LEVEL TROUGH WILL AMPLIFY ACROSS THE WEST WITH A
QUASI-ZONAL FLOW REGIME CONTINUING E OF THE ROCKIES. A COUPLE OF
LOW-AMPLITUDE MID-LEVEL IMPULSES MAY EMANATE EWD ACROSS THE PLAINS.
AT THE SURFACE...A QUASI-STATIONARY FRONT SHOULD LIE ACROSS THE
MIDWEST...WITH WRN PORTION OF THIS BOUNDARY ADVANCING NWD AS A WARM
FRONT IN THE CNTRL PLAINS. DRYLINE WILL MIX ACROSS PARTS OF WRN TX
ON SUN AFTERNOON...WITH LESS CONFIDENT PLACEMENT OF POSITION WITH
NRN EXTENT.

...CNTRL/SRN PLAINS...
A SLIGHT RISK DELINEATION MAY BE WARRANTED FOR PARTS OF THE REGION
IN LATER OUTLOOKS...BUT BELOW-AVERAGE CONFIDENCE EXISTS WITH
WHERE/HOW CONVECTION SHOULD EVOLVE SUN AFTERNOON/NIGHT.

LOW-LEVEL MOISTURE WILL CONTINUE TO INCREASE BENEATH A STOUT
EML...YIELDING 50S SURFACE DEW POINTS ALONG/JUST AHEAD OF THE
DRYLINE BY SUN AFTERNOON. HOWEVER...GUIDANCE DIFFERS WITH POSITION
OF THE DRYLINE...LIKELY OWING TO PRONOUNCED VARIATION WITH THE
HANDLING OF LOW-AMPLITUDE SHORTWAVE IMPULSES IN THE LEE OF THE
CNTRL/SRN ROCKIES. THE POTENTIALLY MOST UNSTABLE ENVIRONMENT WOULD
PROBABLY BE CENTERED ACROSS PARTS OF WRN OK INTO N TX IMMEDIATELY
ALONG THE DRYLINE. HERE...ELONGATED WIND PROFILES WOULD SUPPORT A
RISK FOR SUPERCELLS PRIMARILY PRODUCING LARGE HAIL SHOULD CONVECTION
BE ABLE TO BREACH THE CAP. THIS THREAT WOULD LIKELY REMAIN WITHIN A
NARROW SPATIAL CORRIDOR GIVEN THE EXPECTATION OF STRONG MLCIN TO THE
E IN THE MOIST SECTOR. FARTHER N INTO KS...TSTM PROBABILITIES ARE
HIGHER ALONG THE SLOWLY ADVANCING WARM FRONT BUT MORE MARGINAL
BUOYANCY IS ANTICIPATED.

..GRAMS.. 04/05/2013

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KMFL [050639]: Preliminary Local Storm Report

NWUS52 KMFL 050639
LSRMFL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
239 AM EDT FRI APR 05 2013

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

0215 AM TSTM WND GST 3 NW METRO ZOO 25.65N 80.43W
04/05/2013 M49 MPH MIAMI-DADE FL ASOS

THE ASOS AT WEST KENDALL-TAMIAMI EXECUTIVE AIRPORT
RECORDED A WEST-SOUTHWEST WIND GUST OF 40 KTS...OR 49
MPH...AT 215 AM EDT.


&&

$$

ROSS

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KMFR [050623]: Preliminary Local Storm Report

NWUS56 KMFR 050623
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1122 PM PDT THU APR 4 2013

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

1122 PM HEAVY RAIN 2 SSW OBRIEN 42.05N 123.71W
04/04/2013 M1.02 INCH JOSEPHINE OR TRAINED SPOTTER

HEAVY RAIN DURATION 24 HOURS


&&

$$

IRIS SYSTEM

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 050527
SWODY2
SPC AC 050525

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1225 AM CDT FRI APR 05 2013

VALID 061200Z - 071200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
A QUASI-ZONAL FLOW REGIME IS EXPECTED ACROSS THE CONUS ON D2 IN THE
WAKE OF AN UPPER-LEVEL TROUGH DEPARTING THE ATLANTIC COAST D1. A
LOW-AMPLITUDE SHORTWAVE TROUGH WILL PROGRESS EWD FROM THE NRN PLAINS
TO THE GREAT LAKES...WHILE AN UPSTREAM SHORTWAVE TROUGH APPROACHES
THE PACIFIC NW COAST. AT THE SURFACE...A CYCLONE WILL TRACK EWD FROM
THE UPPER MIDWEST TO THE GREAT LAKES WITH AN ATTENDANT COLD FRONT
DRAPED SWWD. TRAILING PORTION OF THIS FRONT WILL BECOME
QUASI-STATIONARY IN THE SRN HIGH PLAINS...INTERSECTING A DRYLINE IN
NWRN TX.

...CNTRL CONUS...
WITH A SURFACE COLD FRONT PASSING INTO THE SWRN GULF BASIN IN
ASSOCIATION WITH THE DEPARTING SHORTWAVE TROUGH IN THE
SOUTHEAST...LIMITED LOW-LEVEL MOISTURE RETURN WILL OCCUR AHEAD OF
THE NEXT COLD FRONT ENTERING THE CNTRL STATES. SURFACE DEW POINTS
SHOULD HOLD IN THE 40S TO LOWER 50S AS ONLY MODEST ONSHORE FLOW
COMMENCES ALONG THE TX GULF COAST.

ISOLATED ELEVATED TSTMS WILL BE POSSIBLE DURING THE DAY IN
ASSOCIATION WITH THE LOW-AMPLITUDE SHORTWAVE TROUGH APPROACHING THE
GREAT LAKES...POTENTIALLY EXPANDING S/SWWD SAT NIGHT WITHIN A
LOW-LEVEL WAA REGIME. FARTHER SW...INVOF THE DRYLINE/FRONT
INTERSECTION IN NWRN TX/SWRN OK...FORECAST SOUNDINGS ARE STRONGLY
CAPPED IN THE WARM SECTOR. THE 00Z NAM IS AN OUTLIER WITH DEPICTING
CONVECTION EMANATING FROM HIGH-BASED PARCELS /ROOTED AROUND 550-600
MB/ THAT APPEARS TO MOISTEN THE LOWER-LEVELS TO SUBSTANTIALLY
MINIMIZE INHIBITION /DUE TO THE BMJ CONVECTIVE SCHEME/. A MORE
PROBABLE SCENARIO IS THAT AS THE LLJ STRENGTHENS OVERNIGHT...A FEW
ELEVATED TSTMS MAY FORM ALONG THE EDGE OF THE CAP. COMBINATION OF
WEAK BUOYANCY/SHEAR SHOULD MITIGATE POTENTIAL FOR SEVERE HAIL.

..GRAMS.. 04/05/2013

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KPDT [050512]: Preliminary Local Storm Report...summary

NWUS56 KPDT 050512
LSRPDT

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE PENDLETON OR
1010 PM PDT THU APR 04 2013

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

0514 PM NON-TSTM WND GST 2 SE LEXINGTON 45.43N 119.66W
04/04/2013 M45.00 MPH MORROW OR MESONET

0522 PM TSTM WND GST 5 NE RUGGS 45.31N 119.61W
04/04/2013 M46.00 MPH MORROW OR MESONET

0615 PM TSTM WND DMG PENDLETON 45.67N 118.82W
04/04/2013 UMATILLA OR BROADCAST MEDIA

DOWNED TREE. DAMAGE TO HOME. POWER LINES DOWN.

0615 PM TSTM WND GST PENDLETON 45.67N 118.82W
04/04/2013 M55.00 MPH UMATILLA OR OFFICIAL NWS OBS

0615 PM TSTM WND DMG PENDLETON 45.67N 118.82W
04/04/2013 UMATILLA OR PUBLIC

POWER LINES DOWN. POSSIBLE TORNADO.

0615 PM TSTM WND DMG PENDLETON 45.67N 118.82W
04/04/2013 UMATILLA OR PUBLIC

BARN DESTROYED.

0617 PM TSTM WND GST 2 NW PENDLETON 45.69N 118.85W
04/04/2013 M53.00 MPH UMATILLA OR MESONET

0640 PM TSTM WND DMG WESTON 45.82N 118.43W
04/04/2013 UMATILLA OR NWS EMPLOYEE

POWER OUTAGES.

0705 PM TSTM WND GST 5 W COLLEGE PLACE 46.04N 118.49W
04/04/2013 M48.00 MPH WALLA WALLA WA MESONET

0708 PM TSTM WND GST 3 NNE WALLA WALLA 46.11N 118.32W
04/04/2013 M52.00 MPH WALLA WALLA WA OFFICIAL NWS OBS


&&

$$

JAS

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 050439
SWODY1
SPC AC 050436

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1136 PM CDT THU APR 04 2013

VALID 051200Z - 061200Z

...NO SVR TSTM AREAS FORECAST...

...SOUTH FL...

LONG LIVED MCS IS PROGRESSING ACROSS THE SERN GULF BASIN AND WILL
SPREAD ACROSS SOUTH FL BY SUNRISE OVERTURNING LINGERING INSTABILITY
THAT EXISTS SOUTH OF LAKE OKEECHOBEE. IN THE WAKE OF THIS COMPLEX
OF STORMS DEEP LAYER FLOW SHOULD GRADUALLY VEER AND LOW LEVEL
CONVERGENCE SHOULD WANE. LATEST MODEL GUIDANCE SUGGESTS COLD FRONT
WILL NOT SURGE OFFSHORE UNTIL AFTER 06/00Z...ALTHOUGH EFFECTIVE
PRE-FRONTAL WIND SHIFT MAY LIMIT DEEP CONVECTION ALONG MAIN COLD
FRONT. GIVEN THE EXPANSIVE PRECIPITATION AND LIKELY STABILIZING
EFFECTS WITH EARLY MORNING MCS IT/S NOT ENTIRELY CLEAR HOW ROBUST
DAYTIME CONVECTION WILL BE. EVEN SO...FORECAST DEEP LAYER SHEAR
WOULD CERTAINLY SUPPORT UPDRAFT ORGANIZATION AND FOR THIS REASON
WILL MAINTAIN LOW SEVERE PROBS TO ACCOUNT FOR POST-MCS ISOLATED
SEVERE TSTM DEVELOPMENT.


...NRN/CNTRL ROCKIES...

LOW AMPLITUDE PROGRESSIVE SHORT-WAVE TROUGH WILL MOVE ACROSS THE
INTERIOR NWRN U.S. TO A POSITION FROM CNTRL MT...SWD INTO NWRN CO BY
06/00Z. STRONG BOUNDARY LAYER HEATING COMBINED WITH LARGE SCALE
ASCENT SUGGEST SUFFICIENT MID LEVEL MOISTENING FOR ISOLATED
THUNDERSTORMS ACROSS MUCH OF THE NRN/CNTRL ROCKIES. MAGNITUDE OF
INSTABILITY APPEARS INADEQUATE TO WARRANT SEVERE PROBS WITH
PRIMARILY DIURNAL ACTIVITY.

..DARROW/GARNER.. 04/05/2013

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KSTO [050430]: Preliminary Local Storm Report

NWUS56 KSTO 050430
LSRSTO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SACRAMENTO CA
930 PM PDT THU APR 4 2013

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

0620 PM FUNNEL CLOUD 5 NW HENLEYVILLE 40.02N 122.40W
04/04/2013 TEHAMA CA PUBLIC

PUBLIC REPORTED A FUNNEL CLOUD IN THE
VICINITY OF RANCHO TEHAMA.

&&

$$

IRIS SYSTEM

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MESO: Mesoscale Discussion 0389

ACUS11 KWNS 050411
SWOMCD
SPC MCD 050411
FLZ000-050545-

MESOSCALE DISCUSSION 0389
NWS STORM PREDICTION CENTER NORMAN OK
1111 PM CDT THU APR 04 2013

AREAS AFFECTED...SOUTH FLORIDA

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 050411Z - 050545Z

PROBABILITY OF WATCH ISSUANCE...40 PERCENT

SUMMARY...AN ISOLATED SEVERE THREAT IS EXPECTED TO DEVELOP ACROSS
SOUTH FL TONIGHT AS A LINE APPROACHES THE FL WEST COAST OVER THE
NEXT HOUR. WW ISSUANCE COULD BECOME NECESSARY IF THE LINE CAN BECOME
BETTER ORGANIZED WITH ISOLATED WIND DAMAGE POSSIBLE.

DISCUSSION...A LINE OF STRONG THUNDERSTORMS IS ONGOING ABOUT 75
STATUTE MILES SSW OF FT MEYERS AND IS EXPECTED TO MOVE ONSHORE AND
INTO THE EVERGLADES OVER THE NEXT 1 TO 2 HOURS. THE AIRMASS AHEAD OF
THE STORMS OVER THE SRN FL PENINSULA IS VERY MOIST WITH SFC
DEWPOINTS NEAR 70 F WITH RESULTANT MLCAPE VALUES ESTIMATED IN THE
500 TO 1000 J/KG RANGE. ACCORDING TO OBJECTIVE ANALYSIS...THE
CONVECTION IS LOCATED ALONG AN AXIS OF ENHANCED LOW-LEVEL FLOW WHERE
850 MB WIND SPEED ARE ESTIMATED IN THE 20 TO 30 KT RANGE. THIS IS
EVIDENCED BY THE WSR-88D VWP AT MIAMI WHICH ALSO SHOWS ABOUT 40 KT
OF DEEP LAYER SHEAR. THIS WIND SHEAR ENVIRONMENT COULD BE ENOUGH TO
HELP ORGANIZE THE LINE. A FEW DAMAGING WIND GUSTS AND HAIL WILL BE
POSSIBLE AS THE LINE OF CONVECTION MOVES INLAND AFTER 05Z TO 06Z
TIMEFRAME.

..BROYLES/HART.. 04/05/2013

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

ATTN...WFO...MFL...KEY...

LAT...LON 26188085 25818176 25358179 24518167 24608098 25258027
25898005 26188085

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