Alert archive / Virginia / Flash Flood Warnings in 1989

Flash Flood Warning 36, NWS Blacksburg, VA

September 22, 19896 counties in Virginia

NWS Blacksburg, VA issued this flash flood warning at Sep 22, 1989, 9:40 AM EDT for 6 counties in Virginia. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Sep 22, 1989, 9:40 AM EDT (13:40 UTC)
Expired
Sep 22, 1989, 1:45 PM EDT
In force
4 hr
Issued by
NWS Blacksburg, VA
Area
Whole counties

Counties Carroll County, VA, Floyd County, VA, Grayson County, VA, Patrick County, VA, Pulaski County, VA, Wythe 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, 1.7 hours before the alert went out and 112 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 1989-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 293 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 1989-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 657 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
293 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
666 m above ground
0-6 km bulk shear
81 kt
0-1 km storm-relative helicity
657 m²/s²
0-3 km storm-relative helicity
944 m²/s²
Significant tornado parameter
1.1
Supercell composite
13.2

Open this sounding in Storm Lab

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, Sep 22, 7:11 AM EDT, 2 hours 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LYNCHBURG VA
710 AM EDT FRI SEP 22 1989

...TROPICAL STORM HUGO NEAR CHARLOTTE NC...
...TORNADO..FLASH FLOOD AND HIGH WIND WATCHES IN CENTRAL VIRGINIA...

ALTHOUGH THERE IS NO SEVERE WEATHER INDICATED IN SOUTHCENTRAL
VIRGINIA AT THIS TIME..AS THE CENTER OF HUGO NEARS SOUTHERN VIRGINIA
THUNDERSTORMS..HEAVY RAIN AND WIND GUSTS IN EXCESS OF 50 MPH ARE
POSSIBLE. THE POSSIBLITY THAT THIS STORM MAY PRODIUCE TORNADOS CAN NOT
BE DISCOUNTED.

.RESIDENTS SHOULD LISTEN TO NOAA WEATHER RADIO AND LOCAL MEDIA
THROUGHOUT THE DAY.

HUDGINS
Special weather statement, Sep 22, 9:32 AM EDT, 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LYNCHBURG VA
925 AM EDT FRI SEP 22 1989

...TROPICAL STORM HUGO NORTHWEST OF HICKORY NC...
...TORNADO..FLASH FLOOD AND HIGH WIND WATCHES IN CENTRAL VIRGINIA...

TROPCIAL STORM HUGO IS MOVING NORTHWARD ABOUT 30 MPH AND SHOULD PASS
WEST OF LYNCHBURG VA ABOUT MIDDAY..

THE RAPID MOVEMENT LESSENS THE CHANCE OF EXTENDED HEAVY RAINS OVER
SOUTHCENTRAL VIRGINIA TODAY BUT A FLASH FLOOD WATCH REMAINS IN EFFECT

ALSO DUE TO THE RAPID MOVEMENT..WINDS IN EXCESS OF 50 MPH ARE
POSSIBLE AND THE POSSIBILITY OF A TORNADO CANNOT BE DISCOUNTED UNTIL
THE STORM PASSES.

RESIDENTS SHOULD CONTINUE TO LISTEN TO NOAA WEATHER RADIO AND
THE LOCAL MEDIA.

HUDGINS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 22, 8:04 AM EDTFlash Flood WarningRNKAlleghany3 hr
Sep 22, 8:50 AM EDTFlash Flood WarningRNKSurry, Wilkes115 min
Sep 22, 8:50 AM EDTFlash Flood WarningRNKStokes115 min
Sep 22, 10:41 AM EDTFlash Flood WarningRNKStokes, Surry3 hr
Sep 22, 10:41 AM EDTFlash Flood WarningRNKAlleghany, Wilkes3 hr
Sep 22, 9:40 AM EDTFlash Flood WarningRNKCraig, Giles, Montgomery, Roanoke4 hr
Sep 22, 9:40 AM EDTFlash Flood WarningRNKFranklin4 hr
Sep 22, 10:15 AM EDTFlash Flood WarningRNKBland4 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.