Alert archive / North Carolina / Flash Flood Warnings in 1989

Flash Flood Warning 1, NWS Blacksburg, VA

May 5, 1989Wilkes County, North Carolina

NWS Blacksburg, VA issued this flash flood warning at May 5, 1989, 7:36 PM EDT for Wilkes County, North Carolina. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
May 5, 1989, 7:36 PM EDT (23:36 UTC)
Expired
May 5, 1989, 10:45 PM EDT
In force
3 hr
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Wilkes County, NC

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, 11.6 hours before the alert went out and 114 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 1989-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1989-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 213 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
213 m²/s²
0-3 km storm-relative helicity
239 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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, May 5, 7:21 PM EDT, 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
715 PM   EDT  FRI MAY 5 1989

...A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT FOR
THE COUNTIES OF GILES MONTGOMERY FLOYD CARROLL AND ALL
COUNTIES WEST OF THESE COUNTIES IN VIRGINIA...

AT 710 PM RADAR AND IFLOWS GAUGES SHOWS SOME HEAVY RAIN IN PORTIONS
OF SOUTHCENTRAL AND SOUTHWESTERN VIRGINIA. RADAR SHOWS SOME HEAVY
SHOWERS FROM A LINE FROM CARROLL COUNTY NORTHEAST THROUGH ROANOKE
COUNTY...ALSO FROM NORTHERN HENRY COUNTY NORTHEAST THROUGH BEDFORD
COUNTY. IN SOME OF THESE AREAS IFLOWS SHOW RAINFALL FROM 1/2 INCH TO
NEARLY AN INCH OF RAIN FALLING WITHIN AN HOUR. THIS COULD CAUSE SOME
FLOODING ON SOME SMALL STREAMS AND LOW wAREAS WITH POOR DRAINAGE. ALSO
SOME URBAN FOODING COULD OCCUR.

PERSONS LIVING IN THESE AREAS SHOULD BE ALERT IN CASE FLOODING BEGINS.

CE

The office that day

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

IssuedProductOfficeCountiesLasted
May 5, 7:42 PM EDTSevere Thunderstorm WarningRNKIredell, Rowan63 min
May 5, 7:49 PM EDTFlash Flood WarningRNKFranklin116 min

Nearby

Flash Flood Warnings in North Carolina, 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.