Alert archive / West Virginia / Flash Flood Warnings in 2012

Flash Flood Warning 30, NWS Charleston, WV

July 31, 2012Fayette County, Kanawha County, Raleigh County, West Virginia

NWS Charleston, WV issued this flash flood warning at Jul 31, 2012, 5:07 PM EDT for Fayette County, Kanawha County, Raleigh County, West Virginia. It was in force for 113 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 31, 2012, 5:07 PM EDT (21:07 UTC)
Expired
Jul 31, 2012, 7:00 PM EDT
In force
113 min
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

Counties Fayette County, WV, Kanawha County, WV, Raleigh County, WV

The radar

The Charleston,WV radar (KRLX), 42 km from the middle of the area, began a volume at 21:06 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 12:00Z, 9.1 hours before the alert went out and 193 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 2012-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 384 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 2012-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
384 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
804 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
36 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.

844 
WGUS51 KRLX 312107
FFWRLX
WVC019-039-081-312300-
/O.NEW.KRLX.FF.W.0030.120731T2107Z-120731T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON WV
507 PM EDT TUE JUL 31 2012

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EXTREME WEST CENTRAL FAYETTE COUNTY IN WEST VIRGINIA...
  EXTREME SOUTH CENTRAL KANAWHA COUNTY IN WEST VIRGINIA...
  NORTHWESTERN RALEIGH COUNTY IN WEST VIRGINIA...

* UNTIL 700 PM EDT

* AT 457 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM 6 MILES SOUTH OF BURNWELL...OR
  15 MILES SOUTHWEST OF FAYETTEVILLE...MOVING EAST AT 5 MPH.

* THE STORM PRODUCING VERY HEAVY RAIN WILL OTHERWISE REMAIN OVER
  MAINLY RURAL AREAS OF THE INDICATED COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...
BIRCH FORK...TENMILE FORK...CLEAR FORK...SYCAMORE CREEK...PAINT
CREEK...POWELLTON FORK...CANE FORK...CABIN CREEK...ROCKHOUSE CREEK...
RIGHT FORK SYCAMORE CREEK...FULTON CREEK...WHITE OAK CREEK...LONG
BRANCH...FIFTEENMILE FORK...MILBURN CREEK AND ARMSTRONG CREEK.

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 3799 8148 3799 8146 3802 8146 3803 8146
      3805 8148 3806 8146 3807 8132 3793 8131
      3793 8148

$$

13
1 follow-up statement
953 
WGUS71 KRLX 312257
FFSRLX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
657 PM EDT TUE JUL 31 2012

WVC019-039-081-312300-
/O.EXP.KRLX.FF.W.0030.000000T0000Z-120731T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RALEIGH WV-KANAWHA WV-FAYETTE WV-
657 PM EDT TUE JUL 31 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 700 PM EDT FOR EXTREME WEST
CENTRAL FAYETTE...EXTREME SOUTH CENTRAL KANAWHA AND NORTHWESTERN
RALEIGH COUNTIES...

HEAVY RAIN IS NO LONGER ANTICIPATED...THEREFORE THE FLASH FLOOD 
WARNING THAT WAS IN EFFECT HAS BEEN ALLOWED TO EXPIRE. 
HOWEVER...LIGHT TO OCCASIONAL MODERATE SHOWERS WILL PERSIST THRU 730 
PM. 

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 3799 8148 3799 8146 3802 8146 3803 8146
      3805 8148 3806 8146 3807 8132 3793 8131
      3793 8148

$$

05

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 30, 8:25 PM EDTSpecial Weather StatementRLXRoane35 min
Jul 30, 8:30 PM EDTSpecial Weather StatementRLXPocahontas45 min
Jul 30, 8:35 PM EDTSevere Thunderstorm WarningRLXMcDowell42 min
Jul 31, 1:00 PM EDTSpecial Weather StatementRLXRandolph60 min
Jul 31, 2:11 PM EDTSpecial Weather StatementRLXFayette49 min
Jul 31, 2:20 PM EDTSpecial Weather StatementRLXWebster40 min
Jul 31, 2:31 PM EDTSpecial Weather StatementRLXRaleigh59 min
Jul 31, 3:08 PM EDTSpecial Weather StatementRLXNicholas67 min
Jul 31, 3:32 PM EDTSpecial Weather StatementRLXPocahontas28 min
Jul 31, 3:43 PM EDTSpecial Weather StatementRLXFayette47 min
Jul 31, 4:18 PM EDTSpecial Weather StatementRLXMcDowell, Wyoming57 min
Jul 31, 4:22 PM EDTSevere Thunderstorm WarningRLXMcDowell, Wyoming23 min
Jul 31, 4:28 PM EDTSevere Thunderstorm WarningRLXFayette32 min
Jul 31, 4:32 PM EDTSevere Thunderstorm WarningRLXFayette, Kanawha43 min
Jul 31, 4:44 PM EDTSevere Thunderstorm WarningRLXMcDowell, Wyoming46 min
Jul 31, 5:04 PM EDTFlash Flood WarningRLXMcDowell, Wyoming3 hr
Jul 31, 5:53 PM EDTFlash Flood WarningRLXBraxton, Nicholas, Webster2 hr
Jul 31, 6:32 PM EDTSpecial Weather StatementRLXBoone28 min
Jul 31, 7:24 PM EDTFlash Flood WarningRLXRandolph111 min

Nearby

Flash Flood Warnings in West Virginia, 2012Every flash flood warning in 2012

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.