Alert archive / West Virginia / Flash Flood Warnings in 2011

Flash Flood Warning 50, NWS Charleston, WV

September 4, 20117 counties in West Virginia

NWS Charleston, WV issued this flash flood warning at Sep 4, 2011, 5:50 PM EDT for 7 counties in West Virginia. It was in force for 3 hr. 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
Sep 4, 2011, 5:50 PM EDT (21:50 UTC)
Expired
Sep 4, 2011, 8:45 PM EDT
In force
3 hr
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

Counties Clay County, WV, Fayette County, WV, Kanawha County, WV, McDowell County, WV, Nicholas County, WV, Raleigh County, WV, Wyoming County, WV

The radar

The Charleston,WV radar (KRLX), 62 km from the middle of the area, began a volume at 21:50 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
Sep 4, 6:54 PM EDTFLASH FLOODGlen Daniel, WVWATER OVER COAL RIVER RD
Sep 4, 7:00 PM EDTFLASH FLOODMount Hope, WVCREEKS AND STREAMS OUT OF THEIR BANKS IN THE MOUNT HOPE AND GLEN JEAN AREAS.

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

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 9.8 hours before the alert went out and 185 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, Roanoke, VA at 12:00Z on 2011-09-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 259 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, Roanoke, VA at 12:00Z on 2011-09-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.1939Sfc1 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
259 J/kg
Mixed-layer CIN
-195 J/kg
Mixed-layer LCL
720 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
32 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

221 
WGUS51 KRLX 042150
FFWRLX
WVC015-019-039-047-067-081-109-050045-
/O.NEW.KRLX.FF.W.0050.110904T2150Z-110905T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON WV
550 PM EDT SUN SEP 4 2011

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN CLAY COUNTY IN WEST VIRGINIA...
  WESTERN FAYETTE COUNTY IN WEST VIRGINIA...
  THIS INCLUDES THE CITY OF FAYETTEVILLE...
  SOUTHEASTERN KANAWHA COUNTY IN WEST VIRGINIA...
  NORTHERN MCDOWELL COUNTY IN WEST VIRGINIA...
  THIS INCLUDES THE CITY OF WELCH...
  WEST CENTRAL NICHOLAS COUNTY IN WEST VIRGINIA...
  WESTERN RALEIGH COUNTY IN WEST VIRGINIA...
  CENTRAL WYOMING COUNTY IN WEST VIRGINIA...
  THIS INCLUDES THE CITY OF PINEVILLE...

* UNTIL 845 PM EDT

* AT 542 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN FROM THUNDERSTORMS OVER THE WARNED AREA...CAPABLE  
  OF PRODUCING FLASH FLOODING. EXPECT STORMS TO CONTINUE THROUGH AT  
  LEAST 7 PM THIS EVENING. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BURNWELL...
  GLEN...DRY CREEK...TWIN FALLS STATE PARK...SOPHIA...SMITHERS...
  PROSPERITY...PRATT...POWELLTON...OAK HILL...MULLENS...MOUNT HOPE...
  MONTGOMERY...HAWKS NEST STATE PARK...GAULEY BRIDGE...CRAB
  ORCHARD...BRADLEY AND ANSTED

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

LAT...LON 3741 8182 3779 8153 3779 8151 3788 8146
      3844 8136 3834 8107 3790 8112 3759 8134
      3734 8158

$$

05
2 follow-up statements
960 
WGUS71 KRLX 050011
FFSRLX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
811 PM EDT SUN SEP 4 2011

WVC015-019-039-047-067-081-109-050045-
/O.CON.KRLX.FF.W.0050.000000T0000Z-110905T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RALEIGH WV-NICHOLAS WV-MCDOWELL WV-KANAWHA WV-FAYETTE WV-CLAY WV-
WYOMING WV-
811 PM EDT SUN SEP 4 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR
CENTRAL WYOMING...SOUTHWESTERN CLAY...WESTERN FAYETTE...SOUTHEASTERN
KANAWHA...NORTHERN MCDOWELL...WEST CENTRAL NICHOLAS AND WESTERN
RALEIGH COUNTIES...

AT 801 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
ONLY LIGHT RAIN SHOWERS OVER THE WARNED AREA. HOWEVER...MORE SHOWERS 
AND THUNDERSTORMS WERE REDEVELOPING OVER EXTREME SOUTHWEST VIRGINIA 
AND MAY MOVE BACK OVER THE WARNED AREA BETWEEN 9 PM AND 10 PM. SO 
FAR...ONLY MINOR WATER PROBLEMS HAVE BEEN REPORTED.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BURNWELL...
GLEN...SMITHERS...PROSPERITY...PRATT...POWELLTON...OAK HILL...MOUNT
HOPE...MONTGOMERY...HAWKS NEST STATE PARK...GAULEY BRIDGE...
FAYETTEVILLE...BRADLEY AND ANSTED

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 3741 8182 3779 8153 3779 8151 3788 8146
      3844 8136 3834 8107 3790 8112 3759 8134
      3734 8158

$$

05
991 
WGUS71 KRLX 050048
FFSRLX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
848 PM EDT SUN SEP 4 2011

WVC015-019-039-047-067-081-109-050053-
/O.EXP.KRLX.FF.W.0050.000000T0000Z-110905T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RALEIGH WV-NICHOLAS WV-MCDOWELL WV-KANAWHA WV-FAYETTE WV-CLAY WV-
WYOMING WV-
848 PM EDT SUN SEP 4 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 845 PM EDT FOR CENTRAL
WYOMING...SOUTHWESTERN CLAY...WESTERN FAYETTE...SOUTHEASTERN
KANAWHA...NORTHERN MCDOWELL...WEST CENTRAL NICHOLAS AND WESTERN
RALEIGH COUNTIES...

HEAVY RAINS HAVE EXITED THE WARNED AREA. WHILE MORE HEAVY SHOWERS 
AND THUNDERSTORMS ARE OVER EASTERN KENTUCKY AND EXTREME SOUTHWEST 
VIRGINIA AT 840 PM...THE CURRENT MOTION WOULD TAKE THESE STORMS 
WEST OF THE WARNED AREA. THESE STORMS TO THE WEST WILL CONTINUE TO 
BE MONITORED FOR ANY CHANGES IN MOTION. SINCE ONLY MINOR WATER 
PROBLEMS HAVE BEEN REPORTED AND ONLY LIGHT SCATTERED RAIN SHOWERS 
REMAIN...THE FLASH FLOOD WARNING THAT WAS IN EFFECT HAS BEEN ALLOWED 
TO EXPIRE. 

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 3741 8182 3779 8153 3779 8151 3788 8146
      3844 8136 3834 8107 3790 8112 3759 8134
      3734 8158

$$

05

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 3, 9:23 PM EDTSpecial Weather StatementRLXCabell37 min
Sep 4, 3:00 PM EDTSevere Thunderstorm WarningRLXFayette34 min
Sep 4, 3:24 PM EDTSpecial Weather StatementRLXBarbour36 min
Sep 4, 3:47 PM EDTFlash Flood WatchRLXCabell, Jackson, Mason, Pleasants, Putnam, Tyler and 3 more13 hr
Sep 4, 4:25 PM EDTSpecial Weather StatementRLXTucker35 min
Sep 4, 6:05 PM EDTFlash Flood WarningRLXWayne3 hr
Sep 4, 6:56 PM EDTFlash Flood WarningRLXBarbour, Harrison, Lewis, Taylor, Upshur3 hr

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.