Alert archive / West Virginia / Flash Flood Warnings in 2012

Flash Flood Warning 14, NWS Charleston, WV

May 2, 2012Calhoun County, Roane County, West Virginia

NWS Charleston, WV issued this flash flood warning at May 2, 2012, 2:52 AM EDT for Calhoun County, Roane County, West Virginia. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 2, 2012, 2:52 AM EDT (06:52 UTC)
Expired: May 2, 2012, 5:38 AM EDT
In force: 3 hr
Issued by: NWS Charleston, WV
Area: Storm-based polygon
Flood severity: None

Counties Calhoun County, WV, Roane County, WV

The radar

The Charleston,WV radar (KRLX), 64 km from the middle of the area, began a volume at 06:53 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

Pittsburgh, PA (KPIT), launched 00:00Z, 6.9 hours before the alert went out and 211 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1907 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 144 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.

023 
WGUS51 KRLX 020652
FFWRLX
WVC013-087-021045-
/O.NEW.KRLX.FF.W.0014.120502T0652Z-120502T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON WV
252 AM EDT WED MAY 2 2012

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN CALHOUN COUNTY IN WEST VIRGINIA...
  ROANE COUNTY IN WEST VIRGINIA...
  THIS INCLUDES THE CITY OF SPENCER...

* UNTIL 645 AM EDT

* AT 249 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM 8 MILES EAST OF AMMA...OR 10
  MILES NORTH OF CLAY...MOVING SOUTHEAST AT 25 MPH.

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.

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.

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.

&&

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

LAT...LON 3884 8104 3880 8103 3879 8106 3876 8103
      3876 8101 3872 8099 3859 8112 3852 8126
      3854 8134 3855 8147 3864 8154 3884 8152

$$

14

2 follow-up statements

187 
WGUS71 KRLX 020833
FFSRLX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
433 AM EDT WED MAY 2 2012

WVC013-087-021045-
/O.CON.KRLX.FF.W.0014.000000T0000Z-120502T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CALHOUN WV-ROANE WV-
433 AM EDT WED MAY 2 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 AM EDT FOR ROANE
AND SOUTHERN CALHOUN COUNTIES...

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.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

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 3884 8104 3880 8103 3879 8106 3876 8103
      3876 8101 3872 8099 3859 8112 3852 8126
      3854 8134 3855 8147 3864 8154 3884 8152

$$

14

424 
WGUS71 KRLX 020938
FFSRLX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
538 AM EDT WED MAY 2 2012

WVC013-087-020948-
/O.CAN.KRLX.FF.W.0014.000000T0000Z-120502T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CALHOUN WV-ROANE WV-
538 AM EDT WED MAY 2 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR ROANE AND SOUTHERN
CALHOUN COUNTIES...

HEAVY RAIN HAS MOVED OUT OF THE AREA AND AS A RESULT THE FLASH FLOOD 
WARNING HAS BEEN CANCELLED. IN ADDITION...NO REPORTS OF FLOODING 
HAVE BEEN RECEIVED.  

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

LAT...LON 3884 8104 3880 8103 3879 8106 3876 8103
      3876 8101 3872 8099 3859 8112 3852 8126
      3854 8134 3855 8147 3864 8154 3884 8152

$$

14

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 8:34 PM EDT	Flash Flood Watch	RLX	Doddridge, Pleasants, Ritchie, Tyler, Wirt, Wood	8 hr
May 1, 8:46 PM EDT	Severe Thunderstorm Warning	RLX	Jackson, Mason, Putnam	59 min
May 1, 8:48 PM EDT	Special Weather Statement	RLX	Wood	57 min
May 1, 9:34 PM EDT	Special Weather Statement	RLX	Jackson	26 min
May 1, 9:47 PM EDT	Special Weather Statement	RLX	Pleasants, Ritchie	28 min
May 1, 10:10 PM EDT	Special Weather Statement	RLX	Clay	65 min
May 1, 10:13 PM EDT	Special Weather Statement	RLX	Doddridge, Harrison, Ritchie, Tyler	62 min
May 1, 10:34 PM EDT	Special Weather Statement	RLX	Jackson, Mason, Wirt, Wood	56 min
May 2, 12:15 AM EDT	Special Weather Statement	RLX	Cabell, Jackson, Mason, Wood	60 min
May 2, 12:35 AM EDT	Flash Flood Warning	RLX	Mason	6 hr

Nearby

Flash Flood Warnings in West Virginia, 2012 Every 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.