Alert archive / Virginia / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 249, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 19, 2009, 5:29 PM EDT for Charlotte County, Halifax County, Virginia. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 19, 2009, 5:29 PM EDT (21:29 UTC)
- Expired
- Aug 19, 2009, 6:17 PM EDT
- In force
- 48 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
Counties Charlotte County, VA, Halifax County, VA
The radar
The Roanoke radar (KFCX), 132 km from the middle of the area, began a volume at 21:32 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Roanoke, VA (KRNK), launched 12:00Z, 9.5 hours before the alert went out and 71 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 474 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 748 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Blacksburg, VA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 19, 4:05 PM EDT, 1 hour 24 minutes earlier.
Area forecast discussion, Aug 19, 4:05 PM EDT, 1 hour 24 minutes before
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</html>Hazardous weather outlook, Aug 19, 6:23 AM EDT, 11 hours 6 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BLACKSBURG VA 623 AM EDT WED AUG 19 2009 NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059- WVZ042>045-201030- ASHE-ALLEGHANY NC-SURRY-STOKES-ROCKINGHAM-CASWELL-WATAUGA-WILKES- YADKIN-TAZEWELL-SMYTH-BLAND-GILES-WYTHE-PULASKI-MONTGOMERY-GRAYSON- CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH-ROANOKE-BOTETOURT-ROCKBRIDGE- PATRICK-FRANKLIN-BEDFORD-AMHERST-HENRY-PITTSYLVANIA-CAMPBELL- APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE-MERCER-SUMMERS-MONROE- GREENBRIER- 623 AM EDT WED AUG 19 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL NORTH CAROLINA...NORTHWEST NORTH CAROLINA...CENTRAL VIRGINIA...SOUTH CENTRAL VIRGINIA...SOUTHWEST VIRGINIA...WEST CENTRAL VIRGINIA AND SOUTHEAST WEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT. SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED TODAY INTO THIS EVENING. SOME OF THE STORMS WILL BRING TORRENTIAL RAINS...AND COULD CAUSE ISOLATED FLOODING PROBLEMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. SHOWERS AND THUNDERSTORMS ARE EXPECTED INTO FRIDAY. HEAVY RAINFALL AND ISOLATED FLOODING REMAINS A THREAT FROM THE STORMS...AND AN ISOLATED SEVERE THUNDERSTORM IS POSSIBLE...ESPECIALLY FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Aug 19, 3:19 PM EDT, 2 hours 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
319 PM EDT WED AUG 19 2009
NCZ003>005-020-VAZ032-043-192015-
HENRY VA-PATRICK VA-ROCKINGHAM NC-STOKES NC-SURRY NC-YADKIN NC-
319 PM EDT WED AUG 19 2009
...SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WILL AFFECT
HENRY...PATRICK...ROCKINGHAM...STOKES...SURRY AND YADKIN COUNTIES...
AT 318 PM EDT...SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WERE ALONG
A LINE FROM STUART TO 6 MILES SOUTH OF PILOT MOUNTAIN...MOVING EAST
AT 15 MPH.
WIND GUSTS TO 40 MPH ARE POSSIBLE WITH A THUNDERSTORM. VERY HEAVY
RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON
ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.
STORMS WILL BE NEAR EAST BEND AROUND 325 PM...VADE MECUM...AND
PINNACLE AROUND 330 PM...CRITZ...VADE MECUM...LAWSONVILLE...AND
LAWSONVILLE AROUND 335 PM...CAPELLA AROUND 340 PM...HANGING ROCK
STATE PARK AND AND KING AROUND 345 PM.
LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR LATER
UPDATES OR POSSIBLE WARNINGS.
LAT...LON 3626 8067 3673 8029 3658 7973 3624 8000
3625 8045 3622 8045 3622 8044 3620 8045
EXPERIMENTAL
KKLocal storm report, Aug 19, 3:57 PM EDT, 1 hour 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
357 PM EDT WED AUG 19 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0307 PM TSTM WND DMG ROCKY MOUNT 37.00N 79.88W
08/19/2009 FRANKLIN VA LAW ENFORCEMENT
TREES DOWN ALONG 220 AND GRASS HILL ROAD. ESTIMATED GUST
40 MPH.
&&
KKOSTURASpecial weather statement, Aug 19, 4:01 PM EDT, 1 hour 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 401 PM EDT WED AUG 19 2009 VAZ033-034-043>045-058-192100- BEDFORD VA-CAMPBELL VA-FRANKLIN VA-HALIFAX VA-HENRY VA- PITTSYLVANIA VA- 401 PM EDT WED AUG 19 2009 ...SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WILL AFFECT BEDFORD...CAMPBELL...FRANKLIN...HALIFAX...HENRY AND PITTSYLVANIA COUNTIES... AT 400 PM EDT...SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WERE ALONG A LINE FROM 6 MILES NORTHEAST OF MONETA TO 7 MILES WEST OF CALLANDS...MOVING EAST AT 15 MPH. WIND GUSTS TO 50 MPH AND PEA-SIZED HAIL ARE POSSIBLE WITH THUNDERSTORMS. VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. STORMS WILL BE NEAR SMITH MOUNTAIN LAKE STATE PARK AROUND 405 PM...SAGO AROUND 410 PM...SANDY RIVER...AND AJAX AROUND 415 PM...HUDDLESTON...AND CALLANDS AROUND 420 PM...SWANSONVILLE AROUND 425 PM...PITTSVILLE AND AND CLIMAX AROUND 435 PM. LAT...LON 3654 7906 3673 7985 3736 7964 3715 7888 EXPERIMENTAL KK
Special weather statement, Aug 19, 4:12 PM EDT, 1 hour 17 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
412 PM EDT WED AUG 19 2009
NCZ019-192115-
WILKES NC-
412 PM EDT WED AUG 19 2009
...SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WILL AFFECT WILKES
COUNTY...
AT 410 PM EDT...AN AREA OF SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN
WAS LOCATED 10 MILES SOUTH OF RONDA...MOVING SOUTHEAST AT 20 MPH.
WIND GUSTS TO 50 MPH AND PEA-SIZED HAIL ARE POSSIBLE WITH ANY
THUNDERSTORMS. VERY HEAVY RAIN WILL FALL FROM THIS STORMS...AND WILL
CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND
SMALL STREAMS.
LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR LATER
UPDATES OR POSSIBLE WARNINGS.
LAT...LON 3610 8114 3621 8096 3613 8088 3605 8088
3605 8100 3603 8101 3602 8105 3602 8107
EXPERIMENTAL
KKSpecial weather statement, Aug 19, 4:51 PM EDT, 38 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
451 PM EDT WED AUG 19 2009
NCZ006-VAZ044-045-058-059-192145-
CAMPBELL VA-CASWELL NC-CHARLOTTE VA-HALIFAX VA-PITTSYLVANIA VA-
451 PM EDT WED AUG 19 2009
...SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WILL AFFECT
CAMPBELL...CASWELL...CHARLOTTE...HALIFAX AND PITTSYLVANIA COUNTIES...
AT 447 PM EDT...SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WERE ALONG
A LINE FROM 6 MILES NORTHWEST OF BROOKNEAL TO 6 MILES SOUTH OF MT
AIRY TO DANVILLE CITY...MOVING EAST AT 20 MPH.
WIND GUSTS TO 50 MPH AND PEA-SIZED HAIL ARE POSSIBLE WITH A
THUNDERSTORM. VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND
WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES
AND SMALL STREAMS.
STORMS WILL BE NEAR LEDA...AND GATEWOOD AROUND 455 PM...RIDGEWAY
AROUND 500 PM...HAT CREEK...RINGGOLD...DANVILLE AIRPORT...AND
BROOKNEAL AROUND 505 PM...WREN...NATHALIE AND AND BLANCH AROUND 520
PM.
LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR LATER
UPDATES OR POSSIBLE WARNINGS.
LAT...LON 3680 7868 3654 7894 3654 7914 3646 7914
3650 7951 3655 7952 3655 7958 3687 7927
3722 7908 3713 7851 3713 7850
EXPERIMENTAL
KKSpecial weather statement, Aug 19, 5:08 PM EDT, 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 508 PM EDT WED AUG 19 2009 VAZ016-017-032-033-192215- CARROLL VA-FLOYD VA-FRANKLIN VA-PATRICK VA- 508 PM EDT WED AUG 19 2009 ...A STRONG THUNDERSTORM WILL AFFECT CARROLL...FLOYD...FRANKLIN AND PATRICK COUNTIES... AT 508 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 7 MILES EAST OF HILLSVILLE...MOVING EAST AT 20 MPH. WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM. VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. THIS STORM WILL BE NEAR LAUREL FORK AROUND 520 PM...WILLIS AROUND 535 PM...MEADOWS OF DAN AROUND 540 PM...ROCKY KNOB RECREATION AREA AROUND 555 PM...ROCKY KNOB SUMMIT AROUND 600 PM...WOOLWINE AND AND BUFFALO RIDGE AROUND 605 PM. LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR LATER UPDATES OR POSSIBLE WARNINGS. LAT...LON 3682 8075 3700 8017 3674 8008 3664 8069 EXPERIMENTAL KK
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 1:47 PM EDT | Special Weather Statement | RNK | Floyd | 58 min |
| Aug 19, 2:50 PM EDT | Special Weather Statement | RNK | Montgomery | 55 min |
| Aug 19, 3:06 PM EDT | Special Weather Statement | RNK | Bedford, Campbell, Pittsylvania | 54 min |
| Aug 19, 3:19 PM EDT | Special Weather Statement | RNK | Henry, Patrick | 56 min |
| Aug 19, 4:01 PM EDT | Special Weather Statement | RNK | Bedford, Pittsylvania | 59 min |
| Aug 19, 4:51 PM EDT | Special Weather Statement | RNK | Charlotte, Halifax, City of Danville | 54 min |
| Aug 19, 5:08 PM EDT | Special Weather Statement | RNK | Floyd | 67 min |
| Aug 19, 1:20 PM EDT | Special Weather Statement | RNK | Alleghany | 55 min |
| Aug 19, 4:12 PM EDT | Special Weather Statement | RNK | Wilkes | 63 min |
| Aug 19, 6:59 PM EDT | Special Weather Statement | RNK | Caswell | 61 min |
| Aug 19, 7:04 PM EDT | Special Weather Statement | RNK | Ashe, Watauga, Wilkes | 56 min |
| Aug 19, 12:12 PM EDT | Special Weather Statement | RNK | Mercer | 63 min |
| Aug 19, 1:01 PM EDT | Special Weather Statement | RNK | Greenbrier | 59 min |
Nearby
Severe Thunderstorm Warnings in Virginia, 2009Every severe thunderstorm warning in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.