Alert archive / West Virginia / Flash Flood Warnings in 2011

Flash Flood Warning 41, NWS Charleston, WV

July 24, 2011Randolph County, West Virginia

NWS Charleston, WV issued this flash flood warning at Jul 24, 2011, 8:06 AM EDT for Randolph County, West Virginia. It was in force for 3 hr. 1 report 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
Jul 24, 2011, 8:06 AM EDT (12:06 UTC)
Expired
Jul 24, 2011, 11:00 AM EDT
In force
3 hr
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

County Randolph County, WV

The radar

The Sterling radar (KLWX), 181 km from the middle of the area, began a volume at 12:07 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
Jul 24, 9:00 AM EDTFLASH FLOODE Montrose, WVLEADING CREEK OUT OF BANKS. RT. 219 BLOCKED BY WATER.

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 12:00Z, 0.1 hours before the alert went out and 168 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 12:00Z on 2011-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 582 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2011-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 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
582 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
555 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
120 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

103 
WGUS51 KRLX 241206
FFWRLX
WVC083-241500-
/O.NEW.KRLX.FF.W.0041.110724T1206Z-110724T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON WV
806 AM EDT SUN JUL 24 2011

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN RANDOLPH COUNTY IN WEST VIRGINIA...
  THIS INCLUDES THE CITY OF ELKINS...

* UNTIL 1100 AM EDT

* AT 806 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DRYFORK...
  KERENS AND MONTROSE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

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 3891 7940 3893 7945 3889 7946 3889 7951
      3887 7950 3882 7954 3895 7993 3898 7989
      3911 7982 3910 7978 3904 7976 3898 7951
      3898 7943 3896 7934

$$

14
2 follow-up statements
633 
WGUS71 KRLX 241327
FFSRLX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
927 AM EDT SUN JUL 24 2011

WVC083-241500-
/O.CON.KRLX.FF.W.0041.000000T0000Z-110724T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RANDOLPH WV-
927 AM EDT SUN JUL 24 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 AM EDT FOR
NORTHEASTERN RANDOLPH COUNTY...

AT 921 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR HAS ESTIMATED 
THAT 3 TO 6 INCHES OF RAIN HAS FALLEN IN THE PAST THREE HOURS.  THE 
HEAVY RAIN AND THUNDERSTORMS ARE SLOWLY MOVING OUT OF THE WARNED 
AREA...BUT SOME FURTHER RUNOFF MAY OCCUR AND CAUSE WATER PROBLEMS.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KERENS...
DRYFORK AND MONTROSE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

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.

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 3891 7940 3893 7945 3889 7946 3889 7951
      3887 7950 3882 7954 3895 7993 3898 7989
      3911 7982 3910 7978 3904 7976 3898 7951
      3898 7943 3896 7934

$$

24
286 
WGUS71 KRLX 241451
FFSRLX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
1051 AM EDT SUN JUL 24 2011

WVC083-241500-
/O.EXP.KRLX.FF.W.0041.000000T0000Z-110724T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RANDOLPH WV-
1051 AM EDT SUN JUL 24 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1100 AM EDT FOR
NORTHEASTERN RANDOLPH COUNTY...

HEAVY RAIN IS NO LONGER ANTICIPATED...THEREFORE THE FLASH FLOOD 
WARNING THAT WAS IN EFFECT HAS BEEN ALLOWED TO EXPIRE. ALTHOUGH THE 
HEAVY RAIN HAS ENDED...RESIDUAL RUNOFF MAY CONTINUE TO CAUSE LOCAL 
WATER PROBLEMS.

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 3891 7940 3893 7945 3889 7946 3889 7951
      3887 7950 3882 7954 3895 7993 3898 7989
      3911 7982 3910 7978 3904 7976 3898 7951
      3898 7943 3896 7934

$$

24

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 6:58 AM EDTSpecial Weather StatementRLXBarbour62 min
Jul 24, 7:38 AM EDTFlash Flood WarningRLXBarbour3 hr
Jul 24, 4:00 PM EDTSpecial Weather StatementRLXPutnam30 min
Jul 24, 4:23 PM EDTSpecial Weather StatementRLXKanawha37 min
Jul 24, 7:05 PM EDTSpecial Weather StatementRLXLincoln25 min
Jul 24, 7:07 PM EDTSpecial Weather StatementRLXLincoln23 min
Jul 24, 7:50 PM EDTSpecial Weather StatementRLXCalhoun25 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.