Alert archive / Virginia / Flash Flood Warnings in 2011
Flash Flood Warning 26, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at May 16, 2011, 9:48 PM EDT for Patrick 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
- May 16, 2011, 9:48 PM EDT (01:48 UTC)
- Expired
- May 17, 2011, 3:45 AM EDT
- In force
- 6 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
County Patrick County, VA
The radar
The Roanoke radar (KFCX), 36 km from the middle of the area, began a volume at 01:51 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, 1.8 hours before the alert went out and 74 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
- 639 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 785 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
752
WGUS51 KRNK 170148
FFWRNK
VAC141-170745-
/O.NEW.KRNK.FF.W.0026.110517T0148Z-110517T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
948 PM EDT MON MAY 16 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EASTERN PATRICK COUNTY IN SOUTHWEST VIRGINIA
* UNTIL 345 AM EDT.
* AT 942 PM EDT...TRAINED WEATHER SPOTTERS REPORTED TWO INCHES OF
RAIN HAD FALLEN IN ABOUT AN HOUR AND A HALF.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WOOLWINE...
CHARITY AND BUFFALO RIDGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SPRING ROAD AND ANIMAL CLINIC ROAD ARE PRONE TO FLOODING.
ADDITIONAL RAINFALL AMOUNTS OF AN INCH ARE POSSIBLE IN THE WARNED
AREA.
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.
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 3656 8036 3682 8034 3687 8022 3682 8008
3678 8008 3678 8010 3662 8006 3655 8008
$$1 follow-up statement
938
WGUS71 KRNK 170314
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1114 PM EDT MON MAY 16 2011
VAC141-170745-
/O.CON.KRNK.FF.W.0026.000000T0000Z-110517T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PATRICK VA-
1114 PM EDT MON MAY 16 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM EDT FOR
EASTERN PATRICK COUNTY...
AT 1105 PM EDT...HEAVIER RAINFALL HAD BRIEFLY TAPERED OFF ACROSS THE
WARNED AREA. HOWEVER NATIONAL WEATHER SERVICE DOPPLER RADAR
CONTINUED TO SHOW MORE SHOWERS AND THUNDERSTORMS APPROACHING FROM
THE SOUTHEAST AND THESE WILL OVERSPREAD THE REGION AROUND MIDNIGHT.
THESE SHOWERS WILL AGAIN BRING ANOTHER ROUND OF MODERATE TO HEAVY
RAINFALL INTO THE EARLY MORNING HOURS OF TUESDAY.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ROCKY KNOB
RECREATION AREA...WOOLWINE...CHARITY AND BUFFALO RIDGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 1 TO PERHAPS 2 INCHES ARE POSSIBLE IN
THE WARNED AREA.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
&&
LAT...LON 3656 8036 3682 8034 3687 8022 3682 8008
3678 8008 3678 8010 3662 8006 3655 8008
$$
JHThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 11:22 PM EDT | Special Weather Statement | RNK | Henry, City of Martinsville | 53 min |
| May 17, 12:49 AM EDT | Special Weather Statement | RNK | City of Roanoke | 56 min |
| May 17, 12:53 AM EDT | Special Weather Statement | RNK | Franklin | 67 min |
| May 17, 2:07 AM EDT | Special Weather Statement | RNK | Roanoke, City of Roanoke, City of Salem | 53 min |
| May 17, 4:03 AM EDT | Flash Flood Watch | RNK | Alleghany, Amherst, Bath, Bedford, Botetourt, Campbell and 19 more | 24 hr |
| May 17, 11:03 AM EDT | Special Weather Statement | RNK | Floyd, Franklin | 57 min |
| May 17, 1:20 PM EDT | Special Weather Statement | RNK | City of Roanoke, City of Salem | 40 min |
| May 17, 2:24 PM EDT | Special Weather Statement | RNK | Charlotte | 51 min |
| May 17, 3:51 PM EDT | Special Weather Statement | RNK | Patrick | 24 min |
| May 17, 4:55 PM EDT | Special Weather Statement | RNK | Alleghany, City of Covington | 50 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.