Alert archive / Virginia / Flash Flood Warnings in 2011

Flash Flood Warning 18, NWS Blacksburg, VA

May 13, 2011Carroll County, Grayson County, City of Galax, Virginia

NWS Blacksburg, VA issued this flash flood warning at May 13, 2011, 2:39 PM EDT for Carroll County, Grayson County, City of Galax, Virginia. It was in force for 6 hr. 6 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 13, 2011, 2:39 PM EDT (18:39 UTC)
Expired: May 13, 2011, 8:30 PM EDT
In force: 6 hr
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Flood severity: None

Counties Carroll County, VA, City of Galax, VA, Grayson County, VA

The radar

The Roanoke radar (KFCX), 60 km from the middle of the area, began a volume at 18:40 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.

What was reported inside it

Time	Report	Where	Remark
May 13, 3:00 PM EDT	FLASH FLOOD	1 Se Fries, VA	FRIES ROAD FROM NEAR COUNTRY CONVENIENT TO LOW WATER BRIDGE WAS FLOODED WITH 6 TO 8 INCHES FLOWING OVER THE ROAD.
May 13, 3:00 PM EDT	FLASH FLOOD	Fries, VA	HEAVY RAIN HAS CAUSED A LARGE ROCK TO FALL INTO FRIES ROAD JUST OUTSIDE THE COMMUNITY OF FRIES.
May 13, 3:00 PM EDT	FLASH FLOOD	Wsw Fries, VA	WATER DAMAGE TO FIRST FLOOR OF FRIES MIDDLE SCHOOL. 15-20 CARS FLOODED IN THE SCHOOL PARKING LOT WITH WATER UP TO THE WINDOWS OF THE CARS.
May 13, 3:15 PM EDT	HEAVY RAIN 3.31	Fries, VA	3.31 INCHES OF RAIN MEASURED FROM A RAIN GAUGE IN DOWNTOWN
May 13, 3:15 PM EDT	HEAVY RAIN 3.31	Sw Fries, VA	3.31 INCHES OF RAIN IN 1 HOUR.
May 13, 3:30 PM EDT	FLASH FLOOD	Galax, VA	3 ROADS CLOSED IN THE CITY OF GALAX DUE TO FLOODING. CREEKVIEW RD...GIVENS RD...AND EASTVIEW RD. HIGH WATER RECEDED BY 430 PM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.7 hours before the alert went out and 106 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: 185 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 606 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 64 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.

507 
WGUS51 KRNK 131839
FFWRNK
VAC035-077-640-140045-
/O.NEW.KRNK.FF.W.0018.110513T1839Z-110514T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
239 PM EDT FRI MAY 13 2011

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CITY OF GALAX IN SOUTHWEST VIRGINIA
  EASTERN GRAYSON COUNTY IN SOUTHWEST VIRGINIA
  CARROLL COUNTY IN SOUTHWEST VIRGINIA

* UNTIL 845 PM EDT.

* AT 236 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WOODLAWN...
  SYLVATUS...HILLSVILLE...GLADESBORO...BYLLESBY...GALAX HILLSVILLE
  AIRPORT AND FRIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

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 3657 8109 3680 8105 3685 8089 3685 8083
      3690 8066 3661 8062 3660 8063 3659 8062
      3657 8061

$$

KK

4 follow-up statements

849 
WGUS71 KRNK 131859
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
259 PM EDT FRI MAY 13 2011

VAC035-077-640-140045-
/O.CON.KRNK.FF.W.0018.000000T0000Z-110514T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CITY OF GALAX VA-GRAYSON VA-CARROLL VA-
259 PM EDT FRI MAY 13 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR THE
CITY OF GALAX... CARROLL AND EASTERN GRAYSON COUNTIES...

AT 253 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER THE WARNED 
AREA. THIS STORM NEAR GALAX WAS MOVING TO THE EAST AT 15 MPH. 
RAINFALL RATE OF ONE TO THREE INCHES ARE POSSIBLE WITH THIS STORM.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WOODLAWN...
SYLVATUS...HILLSVILLE...GLADESBORO...BYLLESBY...GALAX HILLSVILLE
AIRPORT AND FRIES

WATCH FOR FLOODING ALONG BRUSH CREEK AND POOR BRANCH NEAR FRIES. 
FLOODING PROBLEMS ARE ALSO LIKELY NEAR GALAX.

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.

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.

&&

LAT...LON 3657 8109 3680 8105 3685 8089 3685 8083
      3690 8066 3661 8062 3660 8063 3659 8062
      3657 8061

$$

KK

753 
WGUS71 KRNK 132047
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
447 PM EDT FRI MAY 13 2011

VAC035-077-640-140045-
/O.CON.KRNK.FF.W.0018.000000T0000Z-110514T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CITY OF GALAX VA-GRAYSON VA-CARROLL VA-
447 PM EDT FRI MAY 13 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR THE 
CITY OF GALAX...CARROLL AND EASTERN GRAYSON COUNTIES...

AT 439 PM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLOODING IN 
THE FRIES AREA. LOCATIONS FLOODED INCLUDE DALTON CREEK ROAD...FRIES 
RV PARK...AND FRIES MIDDLE SCHOOL WHERE CARS ARE FLOODED. STREETS 
HAD BEEN FLOODED IN THE CITY OF GALAX...BUT THE HIGH WATER THERE HAS 
RECEDED. 

DOPPLER RADAR SHOWED THAT HEAVY RAIN HAS MOVED OUT OF THE AREA...AND 
HIGH WATER IN THE FIRES AREA SHOULD BEGIN TO RECEDE NOW. 
HOWEVER...ADDITIONAL SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WERE 
IN THE AREA...AND THEY MAY MOVE BACK ACROSS FRIES. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WOODLAWN...
SYLVATUS...HILLSVILLE...GLADESBORO...BYLLESBY...GALAX HILLSVILLE
AIRPORT AND FRIES

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.

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT FRIDAY
EVENING FOR NORTHWEST NORTH CAROLINA AND SOUTHWEST VIRGINIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1100 PM EDT FRIDAY
EVENING FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA.

&&

LAT...LON 3657 8109 3680 8105 3685 8089 3685 8083
      3690 8066 3661 8062 3660 8063 3659 8062
      3657 8061

$$

JJ

943 
WGUS71 KRNK 132234
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
634 PM EDT FRI MAY 13 2011

VAC035-077-640-140045-
/O.CON.KRNK.FF.W.0018.000000T0000Z-110514T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CITY OF GALAX VA-GRAYSON VA-CARROLL VA-
634 PM EDT FRI MAY 13 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR THE
CITY OF GALAX... CARROLL AND EASTERN GRAYSON COUNTIES...

AT 629 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
MORE THUNDERSTORMS WITH HEAVY RAINFALL MOVING INTO THE WARNED AREA. 
THESE STORMS COULD BRING A QUICK ADDITIONAL INCH OF RAIN. THE MAY 
CAUSE ADDITIONAL FLOODING IN THE FRIES AND GALAX AREAS.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WOODLAWN...
SYLVATUS...HILLSVILLE...GLADESBORO...BYLLESBY...GALAX HILLSVILLE
AIRPORT AND FRIES

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.

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT FRIDAY
EVENING FOR NORTHWEST NORTH CAROLINA AND SOUTHWEST VIRGINIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1100 PM EDT FRIDAY
EVENING FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA.

&&

LAT...LON 3657 8109 3680 8105 3685 8089 3685 8083
      3690 8066 3661 8062 3660 8063 3659 8062
      3657 8061

$$

JJ

008 
WGUS71 KRNK 140030
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
830 PM EDT FRI MAY 13 2011

VAC035-077-640-140039-
/O.CAN.KRNK.FF.W.0018.000000T0000Z-110514T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CITY OF GALAX VA-GRAYSON VA-CARROLL VA-
830 PM EDT FRI MAY 13 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR THE CITY OF
GALAX... CARROLL AND EASTERN GRAYSON COUNTIES...

FLOODING HAS ENDED OVER THE WARNED AREA...THUS THE FLASH FLOOD 
WARNING HAS BEEN CANCELLED. 

LAT...LON 3657 8109 3680 8105 3685 8089 3685 8083
      3690 8066 3661 8062 3660 8063 3659 8062
      3657 8061

$$

KK

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 13, 10:27 AM EDT	Special Weather Statement	RNK	Campbell	33 min
May 13, 11:00 AM EDT	Special Weather Statement	RNK	Charlotte	45 min
May 13, 2:07 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Wythe, City of Galax	38 min
May 13, 2:40 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Wythe, City of Galax	51 min
May 13, 2:49 PM EDT	Severe Thunderstorm Warning	RNK	Botetourt, Craig, Roanoke	56 min
May 13, 3:16 PM EDT	Flash Flood Watch	RNK	Alleghany, Bland, Botetourt, Carroll, Craig, Floyd and 13 more	6 hr
May 13, 3:28 PM EDT	Severe Thunderstorm Warning	RNK	Floyd, Franklin, Montgomery, Patrick	62 min
May 13, 3:45 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Patrick	60 min
May 13, 4:15 PM EDT	Severe Thunderstorm Warning	RNK	Montgomery, Roanoke, City of Roanoke, City of Salem	40 min
May 13, 4:25 PM EDT	Severe Thunderstorm Warning	RNK	Smyth, Tazewell	65 min
May 13, 4:40 PM EDT	Severe Thunderstorm Warning	RNK	Patrick	50 min
May 13, 4:50 PM EDT	Special Weather Statement	RNK	Bath	55 min
May 13, 4:52 PM EDT	Special Weather Statement	RNK	Giles	53 min
May 13, 5:10 PM EDT	Flash Flood Warning	RNK	Giles	4 hr
May 13, 5:16 PM EDT	Severe Thunderstorm Warning	RNK	Grayson, Smyth, Wythe	59 min
May 13, 5:30 PM EDT	Flash Flood Warning	RNK	Grayson, Wythe	6 hr
May 13, 5:46 PM EDT	Severe Thunderstorm Warning	RNK	Bath, Rockbridge	59 min
May 13, 6:19 PM EDT	Flash Flood Warning	RNK	Bland, Tazewell, Wythe	3 hr

Nearby

Flash Flood Warnings in Virginia, 2011 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.