Alert archive / Virginia / Flash Flood Warnings in 2011
Flash Flood Warning 61, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Jul 31, 2011, 7:48 AM EDT for Appomattox County, Charlotte County, Virginia. It was in force for 6 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
- Jul 31, 2011, 7:48 AM EDT (11:48 UTC)
- Expired
- Jul 31, 2011, 1:45 PM EDT
- In force
- 6 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Appomattox County, VA, Charlotte County, VA
The radar
The Roanoke radar (KFCX), 133 km from the middle of the area, began a volume at 11:51 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
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 11.8 hours before the alert went out and 165 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
- 635 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 1928 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- -12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
127 WGUS51 KRNK 311148 FFWRNK VAC011-037-311745- /O.NEW.KRNK.FF.W.0061.110731T1148Z-110731T1745Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE BLACKSBURG VA 748 AM EDT SUN JUL 31 2011 THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHWESTERN CHARLOTTE COUNTY IN SOUTH CENTRAL VIRGINIA SOUTH CENTRAL APPOMATTOX COUNTY IN CENTRAL VIRGINIA * UNTIL 145 PM EDT. * AT 736 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM OVER THE WARNED AREA. * THE STORM PRODUCING FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS. FLOODING IS EXPECTED ON BIG CUB CREEK NEAR STATE ROUTE 675... ON THE RIGHT HAND FORK OF BIG CUB CREEK NEAR STATE ROUTE 644 AND STATE ROUTE 727...AND ON THE LEFT HAND FORK WHERE IT JOINS BIG CUB CREEK. PRECAUTIONARY/PREPAREDNESS ACTIONS... ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE WARNED AREA. 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 3732 7886 3735 7877 3720 7872 3718 7880 $$ AMS
2 follow-up statements
357 WGUS71 KRNK 311439 FFSRNK FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 1039 AM EDT SUN JUL 31 2011 VAC011-037-311745- /O.CON.KRNK.FF.W.0061.000000T0000Z-110731T1745Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CHARLOTTE VA-APPOMATTOX VA- 1039 AM EDT SUN JUL 31 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 PM EDT FOR NORTHWESTERN CHARLOTTE AND SOUTHERN APPOMATTOX COUNTIES... AT 1024 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT HEAVIER RAINFALL HAS MOVED OUT OF THE AREA...BUT THAT A STEADY LIGHT TO OCCASIONALLY MODERATE RAINFALL CAN STILL BE EXPECTED THROUGH NOON. RADAR HAS ALSO INDICATED THAT ANYWHERE FROM 3 TO AS MUCH AS 5 INCHES OF RAIN FELL IN THE WARNED AREA EARLIER THIS MORNING. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO EVERGREEN PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. PLEASE RELAY ANY REPORTS OF FLOODING INCLUDING MUDSLIDES...OR ROAD CLOSURES TO THE NATIONAL WEATHER SERVICE IN BLACKSBURG BY CALLING TOLL FREE...1...8 6 6...2 1 5...4 3 2 4. DELAYED REPORTS ARE WELCOME. && LAT...LON 3732 7886 3735 7877 3720 7872 3718 7880 $$ NF
957 WGUS71 KRNK 311746 FFSRNK FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 146 PM EDT SUN JUL 31 2011 VAC011-037-311757- /O.EXP.KRNK.FF.W.0061.000000T0000Z-110731T1745Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CHARLOTTE VA-APPOMATTOX VA- 146 PM EDT SUN JUL 31 2011 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR NORTHWESTERN CHARLOTTE AND SOUTHERN APPOMATTOX COUNTIES... CREEKS AND STREAMS WERE RECEDING THUS THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. LAT...LON 3732 7886 3735 7877 3720 7872 3718 7880 $$ 16
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 8:02 PM EDT | Special Weather Statement | RNK | Grayson | 43 min |
| Jul 30, 8:46 PM EDT | Areal Flood Advisory | RNK | Grayson | 4 hr |
| Jul 31, 7:08 AM EDT | Special Weather Statement | RNK | Appomattox, City of Lynchburg | 67 min |
| Jul 31, 8:26 AM EDT | Special Weather Statement | RNK | Buckingham | 49 min |
| Jul 31, 3:36 PM EDT | Special Weather Statement | RNK | Pulaski | 24 min |
| Jul 31, 6:53 PM EDT | Special Weather Statement | RNK | Carroll | 37 min |
Nearby
Flash Flood Warnings in 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.