Alert archive / Virginia / Flash Flood Warnings in 1989
Flash Flood Warning 46, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Nov 16, 1989, 1:24 AM EST for Carroll County, Grayson County, Virginia. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Nov 16, 1989, 1:24 AM EST (06:24 UTC)
- Expired
- Nov 16, 1989, 3:30 AM EST
- In force
- 2 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Whole counties
Counties Carroll County, VA, Grayson County, VA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 6.4 hours before the alert went out and 118 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.
- Mixed-layer CAPE
- 135 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 568 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 221 m²/s²
- 0-3 km storm-relative helicity
- 265 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Nov 15, 9:49 PM EST, 3 hours 35 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROANOKE VA 945 PM EST WED NOV 15 1989 ...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PORTIONS OF WESTERN VIRGINIA UNTIL 1 AM EST... AT 930 THIS EVENING A STRONG COLD FRONT CONTINUES MOVING TO THE EAST THRU WESTERN WEST VIRGINIA AND EASTERN TENNESSEE AT AROUND 35 MPH. AT THIS SPEED EXTREME WESTERN VIRGINIA MAY START EXPERIENCING SOME GUSTY WINDS AHEAD OF THE FRONT ALONG WITH SOME LOCAL HEAVY SHOWERS OR THUNDERSTORMS. SOME LOCAL WINDS MAY EXCEED 50 MPH AS THE GUST FRONT AHEAD OF THE COLD FRONT MOVES THROUGH. ANOTHER AREA OF CONCERN AT THIS TIME IS ALONG THE SOUTHERN BORDER OF VIRGINIA WHICH JOINS THE TORNADO WATCH AREA TO OUR SOUTH IN WESTERN NORTH CAROLINA. SHOULD SEVERE WEATHER MOVES OUT OF NORTH CAROLINA TO THE NORTHEAST...QUICK ACTION WOULD BE NECESSARY FOR THIS AREA. MEANWHILE..REMAIN ALERT SHOULD FURTHUR STATEMENTS OR WARNINGS BECOME NECESSARY. WB
Special weather statement, Nov 15, 10:17 PM EST, 3 hours 7 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROANOKE VA 945 PM EST WED NOV 15 1989 ...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PORTIONS OF WESTERN VIRGINIA UNTIL 1 AM EST... AT 930 THIS EVENING A STRONG COLD FRONT CONTINUES MOVING TO THE EAST THRU WESTERN WEST VIRGINIA AND EASTERN TENNESSEE AT AROUND 35 MPH. AT THIS SPEED EXTREME WESTERN VIRGINIA MAY START EXPERIENCING SOME GUSTY WINDS AHEAD OF THE FRONT ALONG WITH SOME LOCAL HEAVY SHOWERS OR THUNDERSTORMS. SOME LOCAL WINDS MAY EXCEED 50 MPH AS THE GUST FRONT AHEAD OF THE COLD FRONT MOVES THROUGH. ANOTHER AREA OF CONCERN AT THIS TIME IS ALONG THE SOUTHERN BORDER OF VIRGINIA WHICH JOINS THE TORNADO WATCH AREA TO OUR SOUTTH IN WESTERN NORTH CAROLINA. SHOULD SEVERE WEATHER MOVES OUT OF NORTH CAROLINA TO THE NORTHEAST...QUICK ACTION WOULD BE NECESSARY FOR THIS AREA. MEANWHILE..REMAIN ALERT SHOULD FURTHUR STATEMENTS OR WARNINGS BECOME NECESSARY. WB
Special weather statement, Nov 15, 11:29 PM EST, 1 hour 55 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROANOKE VA 1125 PM EST WED NOV 15 1989 ...THUNDERSTORMS WITH HEAVY DOWNPOURS MOVING INTO SOUTH CENTRAL VIRGINIA AT 1115 PM EST THIS EVENING WEATHER RADAR DETECTED THUNDERSTORMS WITH DOWNPOURS JUST EAST OF GALAX IN CARROLL COUNTY AND IN EASTERN PULASKI COUNTY MOVING INTO MONTGOMVERY COUNTY VA NEAR RADFORD. THESE STORMS ARE CAPABLE OF STRONG GUSTY WINDS DANGEROUS LIGHTNING LOCAL DOWMPOURS AND \LOCAL SMALL STREAM URBAN FLOODING ALONG WITH PONDING OF WATER ON ROADWAYS. TAKE INDOOR SHELTER DURING THE PASSAGE OF THESE STORMS AND AVOID AREAS PRONE TO SMALL STREAM AND URBAN FLOODING. WB
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 15, 11:58 PM EST | Flash Flood Warning | RNK | Alleghany, Wilkes | 3 hr |
| Nov 16, 1:24 AM EST | Flash Flood Warning | RNK | Montgomery | 2 hr |
| Nov 16, 4:08 AM EST | Flash Flood Warning | RNK | Botetourt, Roanoke | 2 hr |
Nearby
Flash Flood Warnings in Virginia, 1989Every flash flood warning in 1989
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.