Alert archive / West Virginia / Flash Flood Warnings in 2011

Flash Flood Warning 44, NWS Charleston, WV

August 7, 20114 counties in West Virginia

NWS Charleston, WV issued this flash flood warning at Aug 7, 2011, 12:17 AM EDT for 4 counties in West Virginia. It was in force for 118 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 7, 2011, 12:17 AM EDT (04:17 UTC)
Expired
Aug 7, 2011, 2:15 AM EDT
In force
118 min
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

Counties Barbour County, WV, Doddridge County, WV, Harrison County, WV, Taylor County, WV

The radar

The Pittsburgh radar (KPBZ), 139 km from the middle of the area, began a volume at 04:17 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.

What was reported inside it

TimeReportWhereRemark
Aug 7, 12:27 AM EDTFLASH FLOODW Bridgeport, WVWDTV IN CLARKSBURG REPORTS WATER FLOWING THROUGH STUDIO...NEED AT LEAST 2.25 INCHES OF RAIN IN A VERY SHORT PERIOD FOR THIS. NUMEROUS REPORTS OF FLASH FLOODING AND WATER RESCUES CLARKSBURG AREA.
Aug 7, 1:30 AM EDTFLASH FLOODBridgeport, WVNUMEROUS REPORTS OF SIGNIFICANT FLASH FLOODING CONTINUE AROUND THE CLARKSBURG AREA. MAIN ROADS SUCH AS ROUTES 50 AND 58 CLOSED...WATER IN STRUCTURES AND WATER EVACUATIONS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 4.3 hours before the alert went out and 127 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.

Skew-T log-pSkew-T log-p diagram, Pittsburgh, PA at 00:00Z on 2011-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1195 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 00:00Z on 2011-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1195 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
863 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

825 
WGUS51 KRLX 070417
FFWRLX
WVC001-017-033-091-070615-
/O.NEW.KRLX.FF.W.0044.110807T0417Z-110807T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON WV
1217 AM EDT SUN AUG 7 2011

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN BARBOUR COUNTY IN WEST VIRGINIA...
  THIS INCLUDES THE CITY OF PHILIPPI...
  EAST CENTRAL DODDRIDGE COUNTY IN WEST VIRGINIA...
  HARRISON COUNTY IN WEST VIRGINIA...
  THIS INCLUDES THE CITY OF CLARKSBURG...
  TAYLOR COUNTY IN WEST VIRGINIA...
  THIS INCLUDES THE CITY OF GRAFTON...

* UNTIL 215 AM EDT

* AT 1210 AM EDT...FLASH FLOODING POTENTIAL FROM THUNDERSTORMS OVER 
THE WARNED AREA IS INCREASING.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  STONEWOOD...SALEM...NUTTER FORT...LUMBERPORT...BRIDGEPORT AND
  ANMOORE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

&&

PLEASE REPORT HIGH WATER TO THE NATIONAL WEATHER SERVICE BY CALLING
TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3914 7990 3916 8055 3917 8059 3916 8061
      3916 8070 3933 8071 3941 8012 3939 8008
      3940 8003 3943 8001 3944 7990

$$

05
2 follow-up statements
064 
WGUS71 KRLX 070531
FFSRLX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
131 AM EDT SUN AUG 7 2011

WVC001-017-033-091-070615-
/O.CON.KRLX.FF.W.0044.000000T0000Z-110807T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HARRISON WV-DODDRIDGE WV-BARBOUR WV-TAYLOR WV-
131 AM EDT SUN AUG 7 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 AM EDT FOR
TAYLOR...NORTHERN BARBOUR...EAST CENTRAL DODDRIDGE AND HARRISON
COUNTIES...

AT 118 AM EDT...THE HEAVIEST THUNDERSTORMS HAVE MOVED EAST INTO 
TAYLOR AND BARBOUR COUNTIES...MOVING EAST AT 15 TO 20 MPH. 
HOWEVER...ADDITIONAL SHOWERS HAVE REDEVELOPED OVER HARRISON COUNTY. 
NUMEROUS REPORTS OF SIGNIFICANT FLASH FLOODING HAVE BEEN RECEIVED 
FROM HARRISON COUNTY AROUND THE CLARKSBURG AREA...RANGING FROM MAIN 
HIGHWAYS CLOSED TO WATER EVACUATIONS. DOPPLER RADAR PRECIPITATION 
ESTIMATES HAVE BEEN UPWARDS TO AROUND 3 INCHES IN ONE HOUR IN THE 
CLARKSBURG AREA. THUS...THE FLASH FLOOD WARNING CONTINUES UNTIL 215 
AM. MOST OF THE STORMS ARE EXPECTED TO FINALLY SHIFT EAST OF THE 
WARNED AREA BY AROUND 215 AM. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LUMBERPORT...
GRAFTON AND BRIDGEPORT

TURN AROUND DON'T DROWN. DO NOT DRIVE YOUR CAR ON FLOODED ROADWAYS.

PLEASE REPORT HIGH WATER TO THE NATIONAL WEATHER SERVICE BY CALLING
TOLL FREE 877-633-6772 WHEN YOU CAN DO SO SAFELY.

LAT...LON 3914 7990 3916 8055 3917 8059 3916 8061
      3916 8070 3933 8071 3941 8012 3939 8008
      3940 8003 3943 8001 3944 7990

$$

05
852 
WGUS71 KRLX 070619
FFSRLX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
219 AM EDT SUN AUG 7 2011

WVC001-017-033-091-070627-
/O.EXP.KRLX.FF.W.0044.000000T0000Z-110807T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HARRISON WV-DODDRIDGE WV-BARBOUR WV-TAYLOR WV-
219 AM EDT SUN AUG 7 2011

...THE FLASH FLOOD WARNING HAS EXPIRED FOR TAYLOR...NORTHERN
BARBOUR...EAST CENTRAL DODDRIDGE AND HARRISON COUNTIES...

HEAVY RAIN IS NO LONGER ANTICIPATED...THEREFORE THE FLASH FLOOD 
WARNING THAT WAS IN EFFECT HAS BEEN ALLOWED TO EXPIRE. 
HOWEVER...SIGNIFICANT FLOODING HAS OCCURRED IN PARTS OF THE WARNED 
AREA AND PERSONS SHOULD CONTINUE TO EXERCISE CAUTION AS WATERS 
RECEDE. 

TURN AROUND DON'T DROWN. DO NOT DRIVE YOUR CAR ON FLOODED ROADWAYS.

PLEASE REPORT HIGH WATER TO THE NATIONAL WEATHER SERVICE BY CALLING
TOLL FREE 877-633-6772 WHEN YOU CAN DO SO SAFELY.

LAT...LON 3914 7990 3916 8055 3917 8059 3916 8061
      3916 8070 3933 8071 3941 8012 3939 8008
      3940 8003 3943 8001 3944 7990

$$

05

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 7, 7:07 AM EDTFlash Flood WatchRLXJackson, Mason, Wood5 hr
Aug 7, 7:48 AM EDTSpecial Weather StatementRLXCabell, Jackson, Kanawha, Mason, Putnam, Roane and 2 more87 min
Aug 7, 12:40 PM EDTSpecial Weather StatementRLXBarbour, Harrison, Taylor50 min
Aug 7, 2:45 PM EDTFlash Flood WatchRLXBarbour, Braxton, Calhoun, Doddridge, Gilmer, Harrison and 11 more12 hr
Aug 7, 7:00 PM EDTSpecial Weather StatementRLXPleasants, Wood60 min
Aug 7, 7:41 PM EDTSpecial Weather StatementRLXCalhoun, Doddridge, Gilmer, Harrison, Ritchie, Tyler and 1 more64 min
Aug 7, 7:48 PM EDTSevere Thunderstorm WarningRLXCalhoun, Doddridge, Gilmer, Lewis, Pleasants, Ritchie and 3 more42 min

Nearby

Flash Flood Warnings in West Virginia, 2011Every flash flood warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.