Alert archive / West Virginia / Flash Flood Watches in 2009
Flash Flood Watch 15, NWS Charleston, WV
NWS Charleston, WV issued this flash flood watch at Aug 29, 2009, 3:36 AM EDT for 9 counties in West Virginia. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Aug 29, 2009, 3:36 AM EDT (07:36 UTC)
- Expired
- Aug 29, 2009, 6:53 AM EDT
- In force
- 3 hr
- Issued by
- NWS Charleston, WV
- Flood severity
- None
Counties Barbour County, WV, Braxton County, WV, Calhoun County, WV, Clay County, WV, Gilmer County, WV, Harrison County, WV, Lewis County, WV, Taylor County, WV, Upshur County, WV
The radar
The Charleston,WV radar (KRLX), 125 km from the middle of the area, began a volume at 07:36 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 00:00Z, 7.6 hours before the alert went out and 215 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
- 822 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 681 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.5
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Charleston, WV wrote its last area forecast discussion before this flash flood watch went out at Aug 29, 2:11 AM EDT, 1 hour 25 minutes earlier.
Area forecast discussion, Aug 29, 2:11 AM EDT, 1 hour 25 minutes before
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</html>Hazardous weather outlook, Aug 28, 3:53 AM EDT, 23 hours 43 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHARLESTON WV 353 AM EDT FRI AUG 28 2009 KYZ101>103-105-OHZ066-067-075-076-083>087-VAZ003-004-WVZ005>011- 013>020-024>040-046-047-290800- GREENUP-CARTER-BOYD-LAWRENCE KY-PERRY-MORGAN-ATHENS-WASHINGTON- JACKSON OH-VINTON-MEIGS-GALLIA-LAWRENCE OH-DICKENSON-BUCHANAN-WAYNE- CABELL-MASON-JACKSON WV-WOOD-PLEASANTS-TYLER-LINCOLN-PUTNAM-KANAWHA- ROANE-WIRT-CALHOUN-RITCHIE-DODDRIDGE-MINGO-LOGAN-BOONE-CLAY-BRAXTON- GILMER-LEWIS-HARRISON-TAYLOR-MCDOWELL-WYOMING-RALEIGH-FAYETTE- NICHOLAS-WEBSTER-UPSHUR-BARBOUR-POCAHONTAS-RANDOLPH- 353 AM EDT FRI AUG 28 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST KENTUCKY...SOUTHEAST OHIO...SOUTHWEST VIRGINIA AND WEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. 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, Aug 29, 1:24 AM EDT, 2 hours 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHARLESTON WV 124 AM EDT SAT AUG 29 2009 WVZ027-028-290700- CLAY-BRAXTON- INCLUDING THE CITIES OF...CLAY...SUTTON...GASSAWAY...BURNSVILLE 124 AM EDT SAT AUG 29 2009 HERE IS A SPECIAL WEATHER STATEMENT FROM THE NATIONAL WEATHER SERVICE... SHOWERS AND A COUPLE OF EMBEDDED THUNDERSTORMS HAVE BEEN TRAINING FROM SOUTHWEST TO NORTHEAST ACROSS CENTRAL CLAY AND BRAXTON COUNTIES SINCE 1030 PM. RADAR ESTIMATES OF ONE TO TWO INCHES HAVE BEEN OBSERVED FROM POND GAP IN EXTREME EASTERN KANAWHA COUNTY...NORTHEAST THROUGH CLAY...TO FLATWOODS AND HEATHERS IN BRAXTON COUNTY. AN ADDITIONAL ONE HALF TO ONE INCH OF RAIN IS POSSIBLE OVER THIS SAME AREA OVER THE NEXT COUPLE OF HOURS...WITH THE BULK THIS MAY CAUSE HIGH WATER ON SOME AREAS STREAMS...ESPECIALLY THOSE THAT FEED INTO THE ELK RIVER IN CLAY COUNTY. ALSO...STANDING WATER ON AREA ROADS MAY BE OBSERVED. IF HEAVY RAIN CONTINUES LONGER THAN CURRENTLY EXPECTED...A FLASH FLOOD WARNING MAY BE NECESSARY. DO NOT DRIVE THROUGH AREAS WHERE WATER COVERS THE ROAD BE AWARE OF HIGH WATER ON NEARBY STREAMS...AND BE PREPARED TO TAKE ACTION IF FLOODING IS OBSERVED.
The office that day
Everything else NWS Charleston, WV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 1:50 AM EDT | Flash Flood Warning | RLX | Clay | 3 hr |
Nearby
Flash Flood Watches in West Virginia, 2009Every flash flood watch 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.