Alert archive / Virginia / Flash Flood Warnings in 2003

Flash Flood Warning 17, NWS Blacksburg, VA

June 13, 2003Patrick County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Jun 13, 2003, 8:30 PM EDT for Patrick County, Virginia. It was in force for 2 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: Jun 13, 2003, 8:30 PM EDT (00:30 UTC)
Expired: Jun 13, 2003, 10:30 PM EDT
In force: 2 hr
Issued by: NWS Blacksburg, VA
Area: Counties, with a storm outline in the text

County Patrick County, VA

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 0.5 hours before the alert went out and 91 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: 501 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 961 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS51 KRNK 140030
FFWRNK
VAC141-140230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
830 PM EDT FRI JUN 13 2003

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN PATRICK COUNTY IN SOUTHWEST VIRGINIA

* UNTIL 1030 PM EDT

* AT 830 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A         
  THUNDERSTORM WITH VERY HEAVY RAINFALL JUST WEST OF STUART

* OTHER LOCATIONS THREATENED BY HEAVY RAIN INCLUDE...BUFFALO RIDGE...
  CHARITY...MEADOWS OF DAN...BROWNS CREEK...HOOKERS CREEK...AND      
  THE HEADWATERS OF THE DAN RIVER

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

RELAY REPORTS OF FLOODING TO THE NATIONAL WEATHER SERVICE IN
BLACKSBURG BY CALLING TOLL FREE...1...8 6 6...2 1 5...4 3 2 4.

LAT...LON 3655 8038 3664 8050 3679 8037 3687 8024
          3678 8008 3669 8017

$$

02

1 follow-up statement

000 
WGUS71 KRNK 140121
FFSRNK
VAC141-140230-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
920 PM EDT FRI JUN 13 2003

...A FLASH FLOOD WARNING CONTINUES FOR PATRICK COUNTY...

UNTIL 1030 PM EDT.

SOME LOCATIONS IN THE WARNING AREA INCLUDE....

*  CLAUDVILLE
*  STUART

AT 918 PM NATIONAL WEATHER SERVICE RADAR INDICATED THE THUNDERSTORM 
THAT PRODUCED MOST OF THE HEAVY RAIN WAS MOVING EAST AND CROSSING 
INTO HENRY COUNTY. HOWEVER...OTHER SMALLER STORMS ARE MOVING BACK 
INTO WESTERN PATRICK COUNTY.  RUNOFF FROM PREVIOUS RAINFALL AND THAT 
FROM THE NEW STORMS WILL CONTINUE TO CAUSE FLASH FLOODING OF LOW 
LYING AREAS AND SMALL CREEKS AND STREAMS IN THE WESTERN HALF OF 
PATRICK COUNTY. THIS INCLUDES URBAN FLOODING IN STUART.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. 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.

RELAY YOUR REPORTS OF FLOODING TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1...8 6 6...2 1 5...4 3 2 4.

$$

SK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 8:13 PM EDT	Severe Thunderstorm Warning	RNK	Patrick	47 min
Jun 13, 8:16 PM EDT	Severe Thunderstorm Warning	RNK	Patrick	44 min
Jun 13, 10:11 PM EDT	Flash Flood Warning	RNK	Patrick	49 min
Jun 13, 11:01 PM EDT	Flash Flood Warning	RNK	Patrick	59 min
Jun 14, 5:45 PM EDT	Flash Flood Warning	RNK	Bedford	2 hr
Jun 14, 6:53 PM EDT	Flash Flood Warning	RNK	Roanoke, City of Roanoke	3 hr

Nearby

Flash Flood Warnings in Virginia, 2003 Every flash flood warning in 2003

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.