Alert archive / Virginia / Flash Flood Warnings in 2011
Flash Flood Warning 70, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Aug 27, 2011, 5:43 PM EDT for Buckingham County, 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
- Aug 27, 2011, 5:43 PM EDT (21:43 UTC)
- Expired
- Aug 27, 2011, 9:00 PM EDT
- In force
- 3 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
County Buckingham County, VA
The radar
The Norfolk radar (KAKQ), 146 km from the middle of the area, began a volume at 21:46 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, 9.7 hours before the alert went out and 98 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
- 77 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 655 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
949
WGUS51 KRNK 272143
FFWRNK
VAC029-280345-
/O.NEW.KRNK.FF.W.0070.110827T2143Z-110828T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
543 PM EDT SAT AUG 27 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
BUCKINGHAM COUNTY IN CENTRAL VIRGINIA
* UNTIL 1145 PM EDT.
* AT 537 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM CONTINUOUS RAIN BANDS MOVING OVER THE WARNED
AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GOLD HILL
AND CENTENARY. CREEKS AFFECTED MAY INCLUDE MUDDY CREEK...HORSEPEN
CREEK...LITTLE GEORGIA CREEK AND SHARPS CREEK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE
WARNED AREA.
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.
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 3751 7835 3734 7850 3739 7859 3740 7859
3739 7861 3742 7864 3743 7868 3775 7858
3776 7851 3778 7849 3774 7842 3771 7832
3767 7826
$$
PC2 follow-up statements
308
WGUS71 KRNK 272257
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
657 PM EDT SAT AUG 27 2011
VAC029-280345-
/O.CON.KRNK.FF.W.0070.000000T0000Z-110828T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BUCKINGHAM VA-
657 PM EDT SAT AUG 27 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT FOR
BUCKINGHAM COUNTY...
AT 653 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE PERIODS OF MODERATE TO HEAVY RAIN MOVING OVER THE WARNED
AREA.
THE HEAVIEST RAIN HAS FALLEN SOUTH OF CENTENARY IN THE MUDDY AND
TURPIN CREEK BASINS WHERE RADAR HAS ESTIMATED UP TO 5 INCHES OF RAIN.
HOWEVER...RAIN GAGE REPORTS FROM THE AREA ARE MUCH LOWER SO IT IS
LIKELY THAT RADAR IS OVERESTIMATING CONSIDERABLY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
&&
LAT...LON 3751 7835 3734 7850 3739 7859 3740 7859
3739 7861 3742 7864 3743 7868 3775 7858
3776 7851 3778 7849 3774 7842 3771 7832
3767 7826
$$
PC213
WGUS71 KRNK 280100
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
900 PM EDT SAT AUG 27 2011
VAC029-280110-
/O.CAN.KRNK.FF.W.0070.000000T0000Z-110828T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BUCKINGHAM VA-
900 PM EDT SAT AUG 27 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR BUCKINGHAM
COUNTY...
FLOODING HAS ENDED OVER THE WARNED AREA...THUS THE FLASH FLOOD
WARNING HAS BEEN CANCELLED.
LAT...LON 3751 7835 3734 7850 3739 7859 3740 7859
3739 7861 3742 7864 3743 7868 3775 7858
3776 7851 3778 7849 3774 7842 3771 7832
3767 7826
$$
PCThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 3:56 AM EDT | Special Weather Statement | RNK | Halifax | 79 min |
| Aug 27, 4:55 AM EDT | Wind Advisory | RNK | Amherst, Appomattox, Bedford, Buckingham, Campbell, Charlotte and 7 more | 16 hr |
| Aug 27, 2:30 PM EDT | Special Weather Statement | RNK | Appomattox, Buckingham, Charlotte, Halifax | 90 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.