Alert archive / West Virginia / Flash Flood Warnings in 2001
Flash Flood Warning 45, NWS Baltimore/Washington
NWS Baltimore/Washington issued this flash flood warning at Aug 11, 2001, 10:10 PM EDT for Grant County, West Virginia. It was in force for 110 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Aug 11, 2001, 10:10 PM EDT (02:10 UTC)
- Expired
- Aug 12, 2001, 12:00 AM EDT
- In force
- 110 min
- Issued by
- NWS Baltimore/Washington
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Grant County, WV
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 2.2 hours before the alert went out and 162 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
- 5 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1770 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS51 KLWX 120212 FFWLWX WVC023-120415- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE BALTIMORE-WASHINGTON 1010 PM EDT SAT AUG 11 2001 THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A * FLASH FLOOD WARNING FOR... GRANT COUNTY IN EASTERN WEST VIRGINIA * UNTIL 1200 AM EDT * AT 1005 PM EDT...WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAINFALL OVER SOUTHWEST GRANT COUNTY NEAREST THE TOWN OF STREBY. THE THUNDERSTORM HAS BEEN STATIONARY OVER THE SAME AREA SINCE BEFORE 9 PM. EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...OTHER POOR DRAINAGE OR LOW LYING AREAS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. QUICKLY MOVE OUT OF AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. LAT...LON 3907 7943 3894 7926 3919 7905 3921 7920 $$ JLW
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before this flash flood warning went out at Aug 11, 8:25 PM EDT, 1 hour 45 minutes earlier.
Area forecast discussion, Aug 11, 8:25 PM EDT, 1 hour 45 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON 825 PM EDT SAT AUG 11 2001 SHOWERS ARE WDSPRD AND ONGOING...BUT DMSHG IN INTNSTY FOR THE MOST PART AND LESSENING THREAT FOR ADNL FLOODING...LAST OF THE FFW ABT TO EXPIRE AT 845 PM AND UNLKLY TO REISSUE ANYWHERE IF OVRALL WKNG TREND CONTS. ATTN IN SHORT TERM HAS SHFTD TO THE LN WITH BOWING STRUCTURE LIFTG NNEWD THRU THE NRN NECK OF VA ACRS THE LWR TIDAL POTOMAC AND BAY INTO THE SRN TIP LWR SRN MD WHERE WRNGS STILL IN EFFECT. 18Z ETA SEEMED TO HV A HNDL ON DETAILS AND SUGGESTED THE NRN NECK ACTVTY AIDED BY DBL STRUCTURE VORTMAX LIFTG NWD OVRNGT AND MAINTAINS A SHWR THREAT THRU THE NGT SPCLY ERN SXNS. THIS IS SUPPORTED BY OBSERVED SFC DATA SHOWG AN ASSOCD MESOLOW OVR SERN VA AND BY SATL AND RADAR TRENDS. THUS WILL KEEP SHWRS IN UPDATE BUT INDCT A CONTG DMSHG TREND AS NIGHT PROGRESSES. .LWX... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...NONE. JLW
In the hours before
Special weather statement, Aug 11, 4:10 PM EDT, 6 hours before
DCZ001-MDZ004>007-009>011-013-014-016>018-VAZ021-025>031-036>042- 050>057-WVZ048-054-055-112300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BALTIMORE-WASHINGTON 410 PM EDT SAT AUG 11 2001 ...NUMEROUS THUNDERSTORMS WITH TORRENTIAL RAINS... AT 410 PM EDT DOPPLER RADAR SHOWED NUMEROUS SLOW MOVING STRONG THUNDERSTORMS OVER A WIDE AREA OF NORTHERN AND CENTRAL VIRGINIA AND CENTRAL AND SOUTHERN MARYLAND. MANY OF THE STORMS WERE CONCENTRATED IN AN AREA FROM HOWARD AND MONTGOMERY COUNTIES SOUTH ACROSS THE DISTRICT PRINCE-GEORGES CHARLES FAIRFAX PRINCE-WILLIAM FAUQUIER COUNTIES AND THROUGH THE CENTRAL PIEDMONT COUNTIES OF MADISON ORANGE AND ALBEMARLE. THE GENERAL MOVEMENT OF THESE STORMS WAS A SLOW DRIFT TOWARD THE NORTHEAST BUT MANY WERE SHOWING ERRATIC MOVEMENT OR WERE NEARLY STATIONARY. THE PRIMARY THREAT FROM THESE IS LOCALLY VERY HEAVY RAINS CAPABLE OF PRODUCING RAINFALL RATES OF 2 TO 3 INCHES PER HOUR. LOCALIZED FLOODING OF SMALL STREAMS CREEKS AND PONDING OF WATER ON ROADWAYS UNDERPASSES AND OTHER LOW LYING AREAS IS A DISTINCT POSSIBILTY INTO THIS EVENING UNTIL AT LEAST 6 TO 8 PM. RESIDENTS IN FLOOD PRONE AREAS SHOULD BE ALERT FOR HEAVY RAINS IN THEIR AREA AND BE PREPARED TO SEEK HIGHER GROUND SHOULD FLOODING BE OBSERVED. MOTORISTS SHOULD UNDER NO CIRCUMSTANCE ATTEMPT TO DRIVE INTO FLOOD WATERS. LOCALLY GUSTY WINDS AND HAIL ARE ALSO POSSIBLE IN THE STRONGER THUNDERSTORMS. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES. FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT HTTP://WWW.NWS.NOAA.GOV/ER/LWX JLW
Nearby
Flash Flood Warnings in West Virginia, 2001Every flash flood warning in 2001
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.