Alert archive / North Carolina / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 439, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 27, 2008, 1:00 PM EDT for Caswell County, North Carolina. It was in force for 60 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 27, 2008, 1:00 PM EDT (17:00 UTC)
- Expired
- Aug 27, 2008, 2:00 PM EDT
- In force
- 60 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
County Caswell County, NC
The radar
The Roanoke radar (KFCX), 109 km from the middle of the area, began a volume at 17:01 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 5.0 hours before the alert went out and 62 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
- 229 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 493 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 237 m²/s²
- 0-3 km storm-relative helicity
- 270 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
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 27, 11:57 AM EDT, 1 hour 3 minutes earlier.
Area forecast discussion, Aug 27, 11:57 AM EDT, 1 hour 3 minutes before
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</html>Hazardous weather outlook, Aug 27, 9:25 AM EDT, 3 hours 35 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BLACKSBURG VA 925 AM EDT WED AUG 27 2008 VAZ011>014-018>020-WVZ043>045-281330- GILES-WYTHE-PULASKI-MONTGOMERY-CRAIG-ALLEGHANY VA-BATH-SUMMERS- MONROE-GREENBRIER- 925 AM EDT WED AUG 27 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST VIRGINIA...WEST CENTRAL VIRGINIA AND SOUTHEAST WEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT. RAIN...HEAVY AT TIMES...CAN BE EXPECTED. THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL...WHICH COULD LEAD TO FLASH FLOODING OF SMALL STREAMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FOR FLOODING TODAY. VAZ017-022>024-033>035-281330- FLOYD-ROANOKE-BOTETOURT-ROCKBRIDGE-FRANKLIN-BEDFORD-AMHERST- 925 AM EDT WED AUG 27 2008 ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL VIRGINIA...SOUTH CENTRAL VIRGINIA...SOUTHWEST VIRGINIA AND WEST CENTRAL 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. RAIN...HEAVY AT TIMES...CAN BE EXPECTED. THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL...WHICH COULD LEAD TO FLASH FLOODING OF SMALL STREAMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FOR FLOODING TODAY. NCZ001>003-018-019-VAZ016-032-281330- ASHE-ALLEGHANY NC-SURRY-WATAUGA-WILKES-CARROLL-PATRICK- 925 AM EDT WED AUG 27 2008 ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL NORTH CAROLINA...NORTHWEST NORTH CAROLINA AND SOUTHWEST 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. STRONG THUNDERSTORMS COULD DEVELOP IN THE AFTERNOON WITH DAMAGING WINDS AND ISOLATED TORNADOES POSSIBLE. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FOR FLOODING TODAY AND POSSIBLE SEVERE THIS AFTERNOON. NCZ004-005-020-VAZ043>045-281330- STOKES-ROCKINGHAM-YADKIN-HENRY-PITTSYLVANIA-CAMPBELL- 925 AM EDT WED AUG 27 2008 ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL NORTH CAROLINA...NORTHWEST NORTH CAROLINA...CENTRAL VIRGINIA AND SOUTH CENTRAL 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. RAIN WILL BE HEAVY AT TIMES THROUGH THIS AFTERNOON. ISOLATED AREAS COULD SEE EXCESSIVE RAINFALL...THAT COULD CAUSE FLASH FLOODING OF STREAMS AND CREEKS. STRONG THUNDERSTORMS MAY ALSO DEVELOP...WITH DAMAGING WINDS AND ISOLATED TORNADOES POSSIBLE. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FOR FLOODING TODAY AND POSSIBLE SEVERE THIS AFTERNOON. NCZ006-VAZ046-047-058-059-281330- CASWELL-APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE- 925 AM EDT WED AUG 27 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL NORTH CAROLINA...CENTRAL VIRGINIA AND SOUTH CENTRAL VIRGINIA. .DAY ONE...TODAY AND TONIGHT. RAIN WILL BE HEAVY AT TIMES THROUGH THIS AFTERNOON. ISOLATED AREAS COULD SEE EXCESSIVE RAINFALL...THAT COULD CAUSE FLASH FLOODING OF STREAMS AND CREEKS. STRONG THUNDERSTORMS MAY ALSO DEVELOP...WITH DAMAGING WINDS AND ISOLATED TORNADOES POSSIBLE. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FOR FLOODING TODAY AND POSSIBLE SEVERE THIS AFTERNOON. VAZ015-281330- GRAYSON- 925 AM EDT WED AUG 27 2008 ...WIND ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST 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. WIND ADVISORY. RAIN WILL BE HEAVY AT TIMES THROUGH THIS AFTERNOON. ISOLATED AREAS COULD SEE EXCESSIVE RAINFALL...THAT COULD CAUSE FLASH FLOODING OF STREAMS AND CREEKS. WITH THE GROUND BEING SATURATED...GUSTY WINDS UP TO 40 MPH CAN UPROOT TREES. STRONG THUNDERSTORMS MAY ALSO DEVELOP THIS AFTERNOON...WITH DAMAGING WINDS AND ISOLATED TORNADOES POSSIBLE. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FOR FLOODING TODAY AND POSSIBLE SEVERE THIS AFTERNOON. VAZ007-009-010-WVZ042-281330- TAZEWELL-SMYTH-BLAND-MERCER- 925 AM EDT WED AUG 27 2008 ...WIND ADVISORY IN EFFECT UNTIL 8 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. WIND ADVISORY. RAIN...HEAVY AT TIMES...CAN BE EXPECTED. THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL...WHICH COULD LEAD TO FLASH FLOODING OF SMALL STREAMS. WITH THE GROUND BEING SATURATED...GUSTY WINDS UP TO 40 MPH CAN UPROOT TREES. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FOR FLOODING TODAY AND POSSIBLE SEVERE THIS AFTERNOON. RCS
In the hours before
Local storm report, Aug 27, 10:19 AM EDT, 2 hours 41 minutes before
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</html>Local storm report, Aug 27, 10:29 AM EDT, 2 hours 31 minutes before
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</html>Local storm report, Aug 27, 10:34 AM EDT, 2 hours 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1034 AM EDT WED AUG 27 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0940 AM FLASH FLOOD 7 WNW BOONE 36.25N 81.79W
08/27/2008 WATAUGA NC LAW ENFORCEMENT
HERB THOMAS RD. CLOSED BY FLOODING
&&
PCLocal storm report, Aug 27, 10:46 AM EDT, 2 hours 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1046 AM EDT WED AUG 27 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0940 AM FLASH FLOOD 5 NE BOONE 36.26N 81.61W
08/27/2008 WATAUGA NC LAW ENFORCEMENT
CASTLE FORD RD. CLOSED
&&
PCLocal storm report, Aug 27, 11:59 AM EDT, 1 hour 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1159 AM EDT WED AUG 27 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1120 AM FLASH FLOOD REIDSVILLE 36.35N 79.67W
08/27/2008 ROCKINGHAM NC LAW ENFORCEMENT
HARRISON STREET CLOSED DUE TO HIGH WATER. SEVERAL OTHER
STREETS REPORTED FLOODED IN REIDSVILLE.
&&
JJACKSONSpecial weather statement, Aug 27, 12:05 PM EDT, 55 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 1205 PM EDT WED AUG 27 2008 NCZ006-VAZ044-271715- CASWELL-PITTSYLVANIA- INCLUDING THE CITY OF...DANVILLE 1205 PM EDT WED AUG 27 2008 ...STRONG STORMS MOVING THROUGH SOUTHERN PITTSYLVANIA COUNTY AND ALL OF CASWELL COUNTY... AT NOON EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF STRONG THUNDERSTORMS DRIFTING EAST AT 10 MPH. THE LINE EXTENDED FROM NEAR DANVILLE SOUTH INTO WESTERN CASWELL COUNTY. THESE STORMS WILL CONTINUE TO DRIFT EAST THOUGH SOUTH CENTRAL AND SOUTHEAST PITTSYLVANIA COUNTY...AND INTO CENTRAL AND EASTERN CASWELL COUNTY THROUGH 100 PM EDT. SOME OF THE STRONGER STORMS WILL PRODUCE TORRENTIAL RAINFALL THAT WILL RESULT IN FLASH FLOODING STREAMS AND CREEKS AND OTHER LOW LYING AREAS...AS WELL AS GUSTY WINDS TO NEAR 45 MPH...WHICH MAY RESULT IN THE DOWNING OF TREES DUE TO SATURATED GROUND CONDITIONS. PLEASE BE PREPARED TO SEEK SHELTER INDOORS IF THREATENING WEATHER APPROACHES. A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ENTIRE AREA UNTIL 215 PM EDT. WERT
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 7:51 AM EDT | Flash Flood Warning | RNK | Patrick | 5 hr |
| Aug 27, 8:16 AM EDT | Flash Flood Warning | RNK | Henry, Pittsylvania, City of Danville, City of Martinsville | 6 hr |
| Aug 27, 9:33 AM EDT | Wind Advisory | RNK | Bland, Grayson, Smyth, Tazewell | 6 hr |
| Aug 27, 2:00 PM EDT | Flash Flood Warning | RNK | Halifax, Pittsylvania, City of Danville | 6 hr |
| Aug 27, 7:58 PM EDT | Flash Flood Warning | RNK | Halifax, Pittsylvania | 6 hr |
| Aug 26, 10:13 PM EDT | Flash Flood Warning | RNK | Watauga | 12 hr |
| Aug 27, 4:42 AM EDT | Flash Flood Warning | RNK | Wilkes | 6 hr |
| Aug 27, 9:54 AM EDT | Areal Flood Warning | RNK | Watauga | 4 hr |
| Aug 27, 10:17 AM EDT | Areal Flood Warning | RNK | Wilkes | 4 hr |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2008Every severe thunderstorm warning in 2008
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.