Alert archive / North Carolina / Flash Flood Warnings in 2003

Flash Flood Warning 68, NWS Blacksburg, VA

August 14, 2003Caswell County, North Carolina; Pittsylvania County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Aug 14, 2003, 4:42 AM EDT for Caswell County, North Carolina; Pittsylvania 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 14, 2003, 4:42 AM EDT (08:42 UTC)
Expired: Aug 14, 2003, 7:45 AM EDT
In force: 3 hr
Issued by: NWS Blacksburg, VA
Area: Counties, with a storm outline in the text

Counties Caswell County, NC, Pittsylvania County, VA

The radar

The Roanoke radar (KFCX), 94 km from the middle of the area, began a volume at 08:43 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, 8.7 hours before the alert went out and 65 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: 917 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 1025 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 63 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.

000 
WGUS51 KRNK 140844
FFWRNK
NCC033-VAC143-141145-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
442 AM EDT THU AUG 14 2003

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN CASWELL COUNTY IN NORTH CENTRAL NORTH CAROLINA        
  SOUTHERN PITTSYLVANIA COUNTY IN SOUTH CENTRAL VIRGINIA

* UNTIL 745 AM EDT

* AT 442 AM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED PERSISTENT 
  SHOWERS AND THUNDERSTORMS EXTENDING FROM JUST WEST OF DANVILLE TO
  NEAR YANCEYVILLE. RADAR ESTIMATED THAT OVER 2 INCHES OF RAIN HAD FALLEN
  OVER EXTREME SOUTHERN PITTSYLVANIA COUNTY...NEAR THE DAN RIVER SINCE
  3:00 AM. AN ADDITIONAL 1 TO 2 INCHES OF RAIN CAN BE EXPECTED AS THE
  SHOWERS CONTINUE TO DRIFT INTO NORTHERN CASWELL COUNTY. THIS WILL BE
  ENOUGH TO CAUSE FLASH FLOODING OF SMALLER CREEKS AND STREAMS.

* SOME LOCATIONS THREATENED BY HEAVY RAIN THROUGH 745 AM EDT INCLUDE
  PROVIDENCE...

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 TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN
AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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 3645 7947 3658 7952 3660 7948 3659 7944
          3656 7944 3655 7938 3649 7934 3644 7928

$$

10

1 follow-up statement

000 
WGUS71 KRNK 141015
FFSRNK
NCC033-VAC143-141045-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
615 AM EDT THU AUG 14 2003

...THE FLASH FLOOD WARNING WHICH WAS IN EFFECT UNTIL 745 AM EDT FOR

  NORTHWESTERN CASWELL COUNTY IN NORTH CENTRAL NORTH CAROLINA...
  SOUTHERN PITTSYLVANIA COUNTY IN SOUTH CENTRAL VIRGINIA

HAS BEEN CANCELLED.

THE HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS AND CREEKS IN
THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO RECEDE...ENDING THE
FLASH FLOOD THREAT. EVEN THOUGH STREAMS AND CREEKS WERE RECEDING...
SOME ROADWAYS STILL MAY BE COVERED WITH WATER. MOTORISTS ARE ADVISED
TO AVOID DRIVING THROUGH FLOODED ROADWAYS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED. MOVE TO
HIGHER GROUND.

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.

$$

JH

Nearby

Flash Flood Warnings in North Carolina, 2003 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; radar from the NEXRAD Level II archive.