Alert archive / Virginia / Flash Flood Warnings in 1990
Flash Flood Warning 1, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Mar 17, 1990, 11:28 AM EST for Henry County, Virginia. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Mar 17, 1990, 11:28 AM EST (16:28 UTC)
- Expired
- Mar 17, 1990, 1:30 PM EST
- In force
- 2 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Whole counties
County Henry 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 12:00Z, 4.5 hours before the alert went out and 68 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
- 98 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 674 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 259 m²/s²
- 0-3 km storm-relative helicity
- 308 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KROA 171629 RRA
FFWROA
VAC690-089-171830-
BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE ROANOKE VA
1128 AM EST SAT MAR 17 1990
THE NATIONAL WEATHER SERVICE IN ROANOKE HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL 130 PM EST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTH CENTRAL VIRGINIA
...CITY MARTINSVILLE...HENRY
HEAVY RAIN DURING THE PAST 6 HOURS IN HENRY COUNTY HAS CAUSED SEVERAL
SMALL CREEKS AND STREAMS TO RISE OUT OF THIER BANKS. RADAR INDICATES
MORE RAIN...POSSIBLY HEAVY AT TIMES...FOR AT LEAST THE NEXT COUPLE OF
HOURS. CREEKS AND SMALLL STREAMS ARE EXPECTED TO REMAIN OUT OF THIER
BANKS FOR THE NEXT FEW HOURS.
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.
JACKSONWhat 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, Mar 17, 7:21 AM EST, 4 hours 7 minutes before
VAZ-008-009-013-014-015-016-271200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROANOKE VA 715 AM EST SAT MAR 17 1990 ...HEAVY SHOWERS IN PATRICK COUNTY VIRGINIA.. WEATHER RADAR SHOWED A LINE 4OF HEAVY SHOWERS OVER CENTRAL PATRICK COUNTY IN VIRGINIA MOVING RAPIDLY NORTHEAST AT 55 MPH. THIS LINE OF SHOWERS COULD PRODUCE SOME STRONG GUSTY WINDS AS IT MOVES THROUGH THE COUNTY. CG
Special weather statement, Mar 17, 7:22 AM EST, 4 hours 6 minutes before
VAZ-008-009-013-014-015-016-171300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROANOKE VA 715 AM EST SAT MAR 17 1990 ...HEAVY SHOWERS IN PATRICK COUNTY VIRGINIA.. WEATHER RADAR SHOWED A LINE 5OF HEAVY SHOWERS OVER CENTRAL PATRICK COUNTY IN VIRGINIA MOVING RAPIDLY NORTHEAST AT 55 MPH. THIS LINE OF SHOWERS COULD PRODUCE SOME STRONG GUSTY WINDS AS IT MOVES THROUGH THE COUNTY. CG
Special weather statement, Mar 17, 7:44 AM EST, 3 hours 44 minutes before
VAZ-008-009-014-171400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROANOKE VA 730 AM EST SAT MAR 17 1990 ...HEAVY SHOWERS OVER WESTERN FRANKLIN AND WESTERN HENRY IN VIRGINIA.. AT 725 EST RADAR SHOWED A LINE OF HEAVY SHOWERS FROM WESTERN FRANKLIN COUNTY SOUTH TO WESTERN HENRY COUNTY AND DOWN INTO NORTH CAROLINA. THIS LINE OF SHOWERS IS MOVING RAPIDLY NORTHEAST AT 55 MPH. STRONG GUSTY WINDS IS POSSIBLE WITH SOME MINOR STREET FLOODING. iCG
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 1:31 PM EST | Flash Flood Warning | RNK | Henry | 119 min |
Nearby
Flash Flood Warnings in Virginia, 1990Every flash flood warning in 1990
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.