Alert archive / Virginia / Flash Flood Warnings in 2003

Flash Flood Warning 82, NWS Blacksburg, VA

September 27, 2003Giles County, Virginia; Monroe County, West Virginia

NWS Blacksburg, VA issued this flash flood warning at Sep 27, 2003, 5:14 PM EDT for Giles County, Virginia; Monroe County, West 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: Sep 27, 2003, 5:14 PM EDT (21:14 UTC)
Expired: Sep 27, 2003, 7:15 PM EDT
In force: 2 hr
Issued by: NWS Blacksburg, VA
Area: Counties, with a storm outline in the text

Counties Giles County, VA, Monroe County, WV

The radar

The Roanoke radar (KFCX), 63 km from the middle of the area, began a volume at 21:14 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

Roanoke, VA (KRNK), launched 12:00Z, 9.2 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: 55 J/kg
Mixed-layer CIN: -125 J/kg
Mixed-layer LCL: 652 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 129 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 272114
FFWRNK
VAC071-WVC063-272315-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
514 PM EDT SAT SEP 27 2003

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN GILES COUNTY IN SOUTHWEST VIRGINIA
  MONROE COUNTY IN SOUTHEAST WEST VIRGINIA

* UNTIL 715 PM EDT

* AT 510 PM EDT...LAW ENFORCEMENT REPORTED FLOODING IN THE TOWN OF 
  GLEN LYN.

* SOME LOCATIONS THREATENED BY HEAVY RAIN THROUGH 715 PM EDT 
  INCLUDE    
  GLEN LYN...
  RICH CREEK... 
  UNION...
  PETERSTOWN...

EXCESSIVE RUNOFF FROM NUMEROUS STORMS WILL CAUSE FLASH FLOODING OF 
SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. 
ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS 
AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH 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. 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 3769 8062 3766 8035 3734 8048 3725 8091
          3747 8083

$$

06

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 27, 4:57 PM EDT	Flash Flood Warning	RNK	Alleghany, City of Covington	3 hr
Sep 27, 6:38 PM EDT	Flash Flood Warning	RNK	Rockbridge, City of Buena Vista, City of Lexington	3 hr

Nearby

Flash Flood Warnings in Virginia, 2003 Flash Flood Warnings in West 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.