Alert archive / Virginia / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 210, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 26, 2009, 1:40 PM EDT for 5 counties in Virginia. It was in force for 65 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
- Jul 26, 2009, 1:40 PM EDT (17:40 UTC)
- Expired
- Jul 26, 2009, 2:45 PM EDT
- In force
- 65 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
Counties Bedford County, VA, Campbell County, VA, Franklin County, VA, Henry County, VA, Pittsylvania County, VA
The radar
The Roanoke radar (KFCX), 62 km from the middle of the area, began a volume at 17:43 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 5.7 hours before the alert went out and 288 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
- 398 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 919 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
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 Jul 26, 1:16 PM EDT, 24 minutes earlier.
Area forecast discussion, Jul 26, 1:16 PM EDT, 24 minutes before
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</html>Hazardous weather outlook, Jul 26, 10:16 AM EDT, 3 hours 24 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE BLACKSBURG VA 1016 AM EDT SUN JUL 26 2009 NCZ004>006-020-VAZ043>047-058-059-271430- STOKES-ROCKINGHAM-CASWELL-YADKIN-HENRY-PITTSYLVANIA-CAMPBELL- APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE- 1016 AM EDT SUN JUL 26 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL NORTH CAROLINA...NORTHWEST NORTH CAROLINA...CENTRAL VIRGINIA AND SOUTH CENTRAL VIRGINIA. .DAY ONE...TODAY AND TONIGHT. A COLD FRONT WILL MOVE THROUGH THE AREA LATER THIS AFTERNOON. SCATTERED STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE AHEAD OF THE FRONT THROUGH THIS EVENING. THE PRIMARY THREAT APPEARS TO BE FROM DAMAGING WINDS ALTHOUGH SOME LARGE HAIL IS ALSO POSSIBLE. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATER THIS AFTERNOON. VAZ007-WVZ042-043-045-271430- TAZEWELL-MERCER-SUMMERS-GREENBRIER- 1016 AM EDT SUN JUL 26 2009 ...FLASH FLOOD WATCH IN EFFECT UNTIL 7 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST VIRGINIA AND SOUTHEAST WEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. FLASH FLOOD WATCH. SHOWERS AND THUNDERSTORMS MAY PRODUCE HEAVY RAINS...WHICH COULD CAUSE FLASH FLOODING ESPECIALLY ALONG SMALLER CREEKS AND STREAMS THROUGH EARLY THIS EVENING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. NCZ001>003-018-019-VAZ009>020-022>024-032>035-WVZ044-271430- ASHE-ALLEGHANY NC-SURRY-WATAUGA-WILKES-SMYTH-BLAND-GILES-WYTHE- PULASKI-MONTGOMERY-GRAYSON-CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH- ROANOKE-BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST-MONROE- 1016 AM EDT SUN JUL 26 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. A COLD FRONT WILL MOVE THROUGH THE AREA LATE THIS AFTERNOON...TRIGGERING SCATTERED THUNDERSTORMS. WHILE WIDESPREAD SEVERE WEATHER IS NOT EXPECTED AT THIS TIME...ISOLATED STORMS MAY BRING DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Jul 26, 8:44 AM EDT, 4 hours 56 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 844 AM EDT SUN JUL 26 2009 VAZ007-WVZ042-261445- TAZEWELL-MERCER- INCLUDING THE CITIES OF...TAZEWELL...BLUEFIELD...FLAT TOP 844 AM EDT SUN JUL 26 2009 ...CONTINUED RAINFALL MAY RESULT IN MINOR FLOODING... NUMEROUS SHOWERS AND AN ISOLATED THUNDERSTORM OR TWO WILL CONTINUE TO TRACK OVER RICHLANDS...TAZEWELL...BLUEFIELD...PRINCETON AND SURROUNDING AREAS THROUGH AT LEAST MID MORNING. RAINFALL THIS MORNING HAS NOT BEEN PARTICULARLY HEAVY...HOWEVER AN ADDITIONAL INCH TO INCH AND A HALF IS POSSIBLE IN SOME LOCATIONS THROUGH 11:00 AM EDT...AND THIS WOULD BE ENOUGH TO CAUSE PONDING OF WATER ON ROADWAYS AND IN LOW LYING AREAS...ESPECIALLY IN URBAN LOCATIONS AND AREAS THAT HAVE KNOWN DRAINAGE PROBLEMS. DO NOT ATTEMPT TO DRIVE THROUGH WATER IF IT IS FLOWING ACROSS THE ROAD. SLOW DOWN IF TRAVELING IN HEAVY RAIN AS STANDING WATER CAN CAUSE HYDROPLANING. LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE LATER UPDATES ON THIS SITUATION. SK
Local storm report, Jul 26, 8:51 AM EDT, 4 hours 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
851 AM EDT SUN JUL 26 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0849 PM TSTM WND DMG CLIFTON FORGE CITY 37.82N 79.83W
07/25/2009 ALLEGHANY VA LAW ENFORCEMENT
TREE DOWN ON BYRD STREET
&&
TWSpecial weather statement, Jul 26, 1:12 PM EDT, 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 112 PM EDT SUN JUL 26 2009 VAZ017-032-033-043-261815- FLOYD VA-FRANKLIN VA-HENRY VA-PATRICK VA- 112 PM EDT SUN JUL 26 2009 ...A STRONG THUNDERSTORM WILL AFFECT FLOYD...FRANKLIN...HENRY AND PATRICK COUNTIES... AT 110 PM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER WOOLWINE... MOVING NORTHEAST AT 30 MPH. WIND GUSTS TO 40 MPH AND HAIL UP TO DIME SIZE ARE POSSIBLE WITH THIS STORM. THIS STORM WILL BE NEAR CHARITY AROUND 120 PM...ENDICOTT AROUND 125 PM...FAIRY STONE STATE PARK AROUND 130 PM...BASSETT AROUND 135 PM AND FERRUM AROUND 140 PM. THE PUBLIC IS ENCOURAGED TO RELAY REPORTS OF STRONG WINDS...HAIL OR FLOODING TO THE NATIONAL WEATHER SERVICE IN BLACKSBURG BY CALLING 1...8 6 6...2 1 5...4 3 2 4...WHEN YOU CAN DO SO SAFELY. LAT...LON 3703 8006 3674 7993 3665 8034 3685 8044 EXPERIMENTAL SK
Special weather statement, Jul 26, 1:32 PM EDT, 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 132 PM EDT SUN JUL 26 2009 VAZ033-034-044-045-261830- BEDFORD VA-CAMPBELL VA-FRANKLIN VA-PITTSYLVANIA VA- 132 PM EDT SUN JUL 26 2009 ...A STRONG THUNDERSTORM WILL AFFECT BEDFORD...CAMPBELL...FRANKLIN AND PITTSYLVANIA COUNTIES...INCLUDING SMITH MOUNTAIN LAKE... AT 130 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES NORTHEAST OF PENHOOK...OR OVER EASTERN SMITH MOUNTAIN LAKE...MOVING EAST AT 25 MPH. WIND GUSTS TO 50 MPH AND HAIL UP TO DIME SIZE ARE POSSIBLE WITH THIS STORM. THIS STORM WILL BE NEAR PITTSVILLE AROUND 145 PM...LEESVILLE AROUND 200 PM...ALTAVISTA AROUND 215 PM AND STRAIGHTSTONE AROUND 230 PM. THE PUBLIC IS ENCOURAGED TO RELAY REPORTS OF STRONG WINDS...HAIL OR FLOODING TO THE NATIONAL WEATHER SERVICE IN BLACKSBURG BY CALLING 1...8 6 6...2 1 5...4 3 2 4...WHEN YOU CAN DO SO SAFELY. LAT...LON 3727 7927 3701 7912 3692 7966 3710 7972 EXPERIMENTAL SK
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 8:16 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Bath, Botetourt, City of Covington | 59 min |
| Jul 25, 8:30 PM EDT | Severe Thunderstorm Warning | RNK | Bland, Giles, Tazewell | 90 min |
| Jul 25, 8:47 PM EDT | Special Weather Statement | RNK | Botetourt | 58 min |
| Jul 25, 8:56 PM EDT | Special Weather Statement | RNK | Bland, Tazewell | 64 min |
| Jul 25, 9:06 PM EDT | Special Weather Statement | RNK | Amherst, Rockbridge, City of Buena Vista, City of Lexington | 84 min |
| Jul 25, 9:16 PM EDT | Severe Thunderstorm Warning | RNK | Amherst, Rockbridge, City of Buena Vista, City of Lexington | 59 min |
| Jul 25, 9:34 PM EDT | Severe Thunderstorm Warning | RNK | Bland, Smyth, Wythe | 33 min |
| Jul 25, 10:39 PM EDT | Special Weather Statement | RNK | Montgomery, City of Radford | 66 min |
| Jul 26, 9:59 AM EDT | Flash Flood Watch | RNK | Tazewell | 4 hr |
| Jul 26, 1:12 PM EDT | Special Weather Statement | RNK | Patrick | 63 min |
| Jul 26, 1:23 PM EDT | Severe Thunderstorm Warning | RNK | Henry, Patrick | 54 min |
| Jul 26, 1:32 PM EDT | Special Weather Statement | RNK | Bedford | 58 min |
| Jul 26, 2:05 PM EDT | Severe Thunderstorm Warning | RNK | Henry, Pittsylvania, City of Martinsville | 42 min |
| Jul 26, 2:15 PM EDT | Severe Thunderstorm Warning | RNK | Appomattox, Campbell, Charlotte, Halifax | 75 min |
| Jul 26, 2:35 AM EDT | Special Weather Statement | RNK | Greenbrier, Monroe, Summers | 55 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.