Alert archive / West Virginia / Flash Flood Warnings in 2012
Flash Flood Warning 7, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Mar 21, 2012, 7:25 PM EDT for Greenbrier County, Monroe County, West Virginia. It was in force for 4 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
- Mar 21, 2012, 7:25 PM EDT (23:25 UTC)
- Expired
- Mar 21, 2012, 11:37 PM EDT
- In force
- 4 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Greenbrier County, WV, Monroe County, WV
The radar
The Roanoke radar (KFCX), 82 km from the middle of the area, began a volume at 23:25 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, 11.4 hours before the alert went out and 115 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.
- Mixed-layer CAPE
- 197 J/kg
- Mixed-layer CIN
- -107 J/kg
- Mixed-layer LCL
- 743 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
110
WGUS51 KRNK 212325
FFWRNK
WVC025-063-220515-
/O.NEW.KRNK.FF.W.0007.120321T2325Z-120322T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
725 PM EDT WED MAR 21 2012
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTH CENTRAL MONROE COUNTY IN SOUTHEAST WEST VIRGINIA
SOUTHWESTERN GREENBRIER COUNTY IN SOUTHEAST WEST VIRGINIA
* UNTIL 115 AM EDT.
* AT 716 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM OVER THE WARNED AREA. A
THUNDERSTORM WAS MOVING NORTHWEST THROUGH NORTHERN MONROE COUNTY
ACROSS AN AREA THAT RECEIVED SIGNIFICANT RAINFALL LATE WEDNESDAY
AFTERNOON. RAINFALL FROM THIS STORM MAY PROMPT FLASH FLOODING ALONG
WOLF CREEK. WOLF CREEK EMPTIES INTO THE GREENBRIER RIVER NEAR
GLENRAY AND THE PASSES NEAR ALDERSON.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WOLF
CREEK AND ALDERSON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 RELAY ANY REPORTS OF FLOODING INCLUDING MUDSLIDES...OR ROAD
CLOSURES TO THE NATIONAL WEATHER SERVICE IN BLACKSBURG BY CALLING
TOLL FREE...1...8 6 6...2 1 5...4 3 2 4. DELAYED REPORTS ARE WELCOME.
&&
LAT...LON 3778 8061 3771 8058 3763 8056 3763 8064
3769 8068 3770 8068 3771 8066 3774 8067
$$
DS2 follow-up statements
884
WGUS71 KRNK 220030
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
830 PM EDT WED MAR 21 2012
WVC025-063-220515-
/O.CON.KRNK.FF.W.0007.000000T0000Z-120322T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONROE WV-GREENBRIER WV-
830 PM EDT WED MAR 21 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM EDT FOR
NORTHERN MONROE AND SOUTHWESTERN GREENBRIER COUNTIES...
AT 825 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
HEAVY RAIN PRODUCING STORM THAT PROMPTED THE WARNING HAS WEAKENED TO
LIGHT RAIN. HOWEVER...FLASH FLOODING IS STILL EXPECTED ALONG WOLF
CREEK AS RUNOFF FROM THE EARLIER STORM DRAINS INTO WOLF CREEK.
EVENTUALLY THIS WATER WILL DRAIN INTO THE GREENBRIER RIVER AND PASS
NEAR ALDERSON.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ALDERSON
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
&&
LAT...LON 3778 8061 3771 8058 3763 8056 3763 8064
3769 8068 3770 8068 3771 8066 3774 8067
$$
DS729
WGUS71 KRNK 220337
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1137 PM EDT WED MAR 21 2012
WVC025-063-220340-
/O.CAN.KRNK.FF.W.0007.000000T0000Z-120322T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONROE WV-GREENBRIER WV-
1137 PM EDT WED MAR 21 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHERN MONROE AND
SOUTHWESTERN GREENBRIER COUNTIES...
FLASH FLOODING HAS ENDED OVER THE WARNED AREA...THUS THE FLASH FLOOD
WARNING HAS BEEN CANCELLED. LOCAL RESIDENTS IN ALDERSON WEST
VIRGINIA REPORTED THAT PONDING OF WATER CONTINUES ON SOME OF THE
STREETS...BUT THAT THE HEAVY RAIN HAD ENDED.
ACCORDING TO THE COUNTY WARNING POINT IN GREENBRIER COUNTY...ROADS
THAT WERE TEMPORARILY CLOSED EARLIER IN THE EVENING HAVE BEEN
REOPENED. IN SPITE OF THIS POSITIVE NEWS...MOTORISTS SHOULD STILL BE
ON THE LOOKOUT FOR DEBRIS THAT MAY REMAIN ON AREA HIGHWAYS. RADAR
ESTIMATED THAT BETWEEN 3 AND 4 INCHES OF RAIN FELL BETWEEN ALDERSON
AND MEADOW BLUFF IN GREENBRIER COUNTY...AND BETWEEN ALDERSON AND
WOLF CREEK IN MONROE COUNTY WEST VIRGINIA. HIGHWAYS...ESPECIALLY
THE GRAVEL ROADS...IN THESE AREAS MAY HAVE BEEN DAMAGED BY RUNOFF
FROM THIS EXTREME RAINFALL. PLEASE USE EXTRA CAUTION IF TRAVELING IN
THIS PART OF WEST VIRGINIA OVERNIGHT.
LAT...LON 3778 8061 3771 8058 3763 8056 3763 8064
3769 8068 3770 8068 3771 8066 3774 8067
$$The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 21, 5:24 PM EDT | Special Weather Statement | RNK | Monroe | 36 min |
| Mar 21, 5:35 PM EDT | Special Weather Statement | RNK | Greenbrier | 25 min |
| Mar 21, 6:04 PM EDT | Special Weather Statement | RNK | Greenbrier | 26 min |
| Mar 21, 6:15 PM EDT | Special Weather Statement | RNK | Fayette | 30 min |
| Mar 21, 6:31 PM EDT | Special Weather Statement | RNK | Greenbrier | 29 min |
| Mar 21, 6:57 PM EDT | Flash Flood Warning | RNK | Greenbrier, Summers | 5 hr |
| Mar 21, 7:36 PM EDT | Special Weather Statement | RNK | Summers | 24 min |
| Mar 21, 7:47 PM EDT | Special Weather Statement | RNK | Summers | 28 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.