Alert archive / North Carolina / Flash Flood Warnings in 2002

Flash Flood Warning 31, NWS Blacksburg, VA

July 26, 2002Surry County, North Carolina

NWS Blacksburg, VA issued this flash flood warning at Jul 26, 2002, 12:09 AM EDT for Surry County, North Carolina. 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 counties it named.

The facts

Issued: Jul 26, 2002, 12:09 AM EDT (04:09 UTC)
Expired: Jul 26, 2002, 3:00 AM EDT
In force: 3 hr
Issued by: NWS Blacksburg, VA
Area: Whole counties

County Surry County, NC

The radar

The Roanoke radar (KFCX), 77 km from the middle of the area, began a volume at 04:12 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, 4.2 hours before the alert went out and 80 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: 1471 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 660 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KRNK 260409
FFWRNK
NCC171-260700-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
1204 AM EDT FRI JUL 26 2002

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SURRY COUNTY IN NORTH CENTRAL NORTH CAROLINA

* UNTIL 300 AM EDT

* AT 1204 AM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED THUNDERSTORMS
  WITH HEAVY RAINS NEAR DEVOTION MOVING SLOWLY NORTH. RAINFALL RATES
  OF TWO TO THREE INCHES PER HOUR ARE POSSIBLE WITH THESE STORMS. THIS
  WILL RESULT IN FLASH FLOODING. 

* OTHER LOCATIONS THREATENED BY HEAVY RAIN INCLUDE...FAIRVIEW...WHITE
  PLAINS...ARARAT...LEVEL CROSS...PINE RIDGE...STATE RD AND
  WESTFIELD...

<<CALL TO ACTION>>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 3654 8074 3641 8045 3626 8087 3643 8092

07

1 follow-up statement

000 
WGUS71 KRNK 260643
FFSRNK
NCC171-260745-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
245 AM EDT FRI JUL 26 2002

FLASH FLOOD WARNING FOR SURRY COUNTY WILL BE ALLOWED TO EXPIRE.

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE HEAVIEST RAIN HAS 
MOVED OUT OF SURRY COUNTY. THE FLOOD THREAT WAS DIMINISHING. SOME 
MINOR FLOODING MAY CONTINUE...BUT THE THREAT OF SERIOUS FLOODING IS 
ENDING. THUS...THE FLASH FLOOD WARNING FOR SURRY COUNTY IS BEING 
ALLOWED TO EXPIRE. ADDITIONAL SHOWERS AND THUNDERSTORMS WILL MOVE
NORTHEAST ACROSS THE AREA THIS MORNING. ADDITIONAL RAINFALL UP TO 
2 INCHES IS POSSIBLE WITH THESE STORMS. 

--CALL TO ACTION-- 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.

KK

$$

LAT...LON 3655 8049 3629 8046 3629 8087 3655 8083

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 6:41 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham	49 min

Nearby

Flash Flood Warnings in North Carolina, 2002 Every flash flood warning in 2002

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.