Alert archive / South Carolina / Flash Flood Warnings in 1990

Flash Flood Warning 29, NWS Greenville-Spartanburg, SC

August 21, 1990Laurens County, South Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Aug 21, 1990, 5:44 PM EDT for Laurens County, South Carolina. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Aug 21, 1990, 5:44 PM EDT (21:44 UTC)
Expired
Aug 21, 1990, 8:45 PM EDT
In force
3 hr
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

County Laurens County, SC

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

Athens Municipal, GA (KAHN), launched 12:00Z, 9.7 hours before the alert went out and 133 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, Athens Municipal, GA at 12:00Z on 1990-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1505 joules per kilogram.LCLLFCEL10008507005003002001001 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, Athens Municipal, GA at 12:00Z on 1990-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.1939Sfc1 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
1505 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
1149 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
9 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 
TTAA00 KGSP 212146
FFWGSP
SCC059-212345-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
544 PM EDT TUE AUG 21 1990
 
THE NATIONAL WEATHER SERVICE IN GREENVILLE SPARTANBURG HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  845 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN  SOUTH CAROLINA
 
   ...CENTRAL AND EASTERN LAURENS COUNTY
 
REPORTS HAVE BEEN RECEIVED FROM LAURENS COUNTY SHERIFFS OFFICE OF
FLOODING IN THE CITY OF LAURENS. VERY HEAVY RAINFALL CONTINUES TO
FALL IN CENTRAL AND EASTERN PORTIONS OF LAURENS COUNTY. THE STORMS
PRODUCING THIS RAIN WERE DRIFTING VERY SLOWLY TOWARD THE EAST.
 
 
LOWLAND AREAS SUBJECT TO FLOODING SHOULD BE EVACUATED. PEOPLE
IN AREAS THAT ARE PRONE TO FLOODING SHOULD BE ALERT FOR RAPIDLY
RISING WATER...AND GO TO HIGHER GROUND IMMEDIATELY.
 
FLOOD PRONE URBAN AREAS FILL WITH WATER QUICKLY. CLOGGED STORM
DRAINS MAY CAUSE OTHER AREAS TO FLOOD. DO NOT DRIVE THROUGH
FLOOD WATER AND STAY AWAY FROM STORM DRAINS.

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, Aug 21, 2:07 PM EDT, 3 hours 37 minutes before
NCZ009-010-011-012-212000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ASHEVILLE NC
200 PM EDT TUE  AUG 21 1990

...VERY HEAVY THUNDERSTORMS DEVELOPING IN WESTERN NORTH CAROLINA...

AT 145 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED HEAVY THUNDERSTORMS
DEVELOPING IN SECTIONS OF WESTERN NORTH CAROLINA.  THE HEAVIEST STORMS
WERE LOCATED NEAR MARSHALL AND SPRUCE PINE.  THESE STORMS ARE MOVING
TOWARD THE EAST AT ABOUT 25 MILES AN HOUR.

OTHER STORMS ARE DEVELOPING AND MAY INTENSIFY REACHING SEVERE LIMITS
LATER THIS AFTERNOON PRODUCING HEAVY RAIN...STRONG AND GUSTY WINDS..
HAIL AND DANGEROUS LIGHTNING.

BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND BE READY TO
REACT IF A STXORM APPROACHES OR IF A WARNING IS ISSUED.

STAY TUNED TO THE NATIONAL WEATHER SERVICE RADIO FOR THE LATEST
STATEMENTS AND POSSIBLE WARNINGS...FOR YOU WILL HEAR IT FIRST ON
THE NATIONAL WEATHER SERVICE RADIO.

SLUDER
Special weather statement, Aug 21, 2:45 PM EDT, 2 hours 59 minutes before
NCZ 007-009-010-011-012-013-220200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ASHEVILLE NC
245 PM EDT TUE  AUG 21 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH
NUMBER 667 FOR PARTS OF WESTERN AND CENTRAL NORTH CAROLINA EFFECTIVE
UNTIL 1000 PM EDT.

IN WESTERN NORTH CAROLINA THE WATCH INCLUDES THE FOLLOWING COUNTIES...
MCDOWELL...AVERY...BUNCOMBE...TRANSYLVANIA...JACKSON...ASHE...POLK...
MITCHELL...HAYWOOD...CHEROKEE...MACON...BURKE...RUTHERFORD...WATAUGA...
HENDERSON...CLAY...SWAIN...CALDWELL...YANCEY...MADISON AND GRAHAM.

REMEMBER...SEVERE THUNDERSTORMS AFE POSSIBLE IN AND NEAR THE WATCH
AREA...PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND BE READY TO REACT IF A WARNING IS ISSUED.

AMATEUR RADIO OPERATORS AND OTHER SPOTTER GROUPS IN AND NEAR THE WATCH
AREA ARE REQUESTED TO RELAY STORM INFORMATION TO THE NATIONAL WEATHER
SERVICE.

STAY TUNED TO THE NATIONAL WEATHER SERVICE RADIO FOR THE LATEST
STATEMENTS AND POSSIBLE WARNINGS.

SLUDER
Special weather statement, Aug 21, 3:12 PM EDT, 2 hours 32 minutes before
SCZ001>004-212010-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
310 PM EDT TUE AUG 21 1990

...SEVERE THUNDERSTORM WATCH UNTIL 1000 PM INCLUDES ALL UPSTATE
COUNTIES...
...VERY HEAVY RAINFALL LIKELY IN SOME AREAS...
AT 300 PM WEATHER RADAR SHOWED THUNDERSTORMS DEVELOPING OVER PARTS
OF THE UPSTATE.  THE STRONGEST STORMS WERE IN EXTREME EASTERN
GREENWOOD COUNTY AND IN NORTHERN SPARTANBURG COUNTY.  THERE WERE MANY
OTHER STORMS DEVELOPING QUICKLY OVER THE REMAINDER OF THE AREA.

THERE HAVE NOT BEEN ANY REPORTS OF DAMAGING WINDS OR LARGE HAIL YET.
THAT WILL BECOME MORE LIKELY INTO THE LATE AFTERNOON AND EVENING.
HOWEVER...THE STORMS WHICH HAVE DEVELOPED SO FAR HAVE SHOWN VIRTUALLY NO
MOVEMENT.  THAT MEANS LARGE AMOUNTS OF RAIN WILL BE RECEIVED IN A SHORT
TIME IN SOME COMMUNITIES.  LOCAL FLOODING PROBLEMS COULD OCCUR AS A
RESULT.  IF THE THUNDERSTORM DEVELOPMENT OCCURS OVER A FAIRLY LARGE
AREA...ADVISORIES AND EVEN WARNINGS FOR FLOODING COULD BECOME NECESSARY.

IN THE MEANTIME...MOTORISTS SHOULD NOT DRIVE INTO FLOODED AREAS WHICH
MAY DEVELOP.  PEOPLE SHOULD BE CAUTIOUS AS THUNDERSTORMS DEVELOP OR
APPROACH.  THESE STORMS CAN BECOME SEVERE RAPIDLY AND PRODUCE DAMAGING
WINDS OR LARGE HAIL WITH LITTLE TIME FOR WARNING.

LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

JONES
Special weather statement, Aug 21, 3:45 PM EDT, 1 hour 59 minutes before
SCZ001>004-212045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
343 PM EDT TUE AUG 21 1990

...SEVERE THUNDERSTORM WATCH UNTIL 1000 PM INCLUDES ALL UPSTATE
COUNTIES...
...STRONG THUNDERSTORMS APPROACHING CHESNEE FROM THE NORTHWEST...

AT 340 PM WEATHER RADAR SHOWED STRONG THUNDERSTORMS APPROACHING THE
CHESNEE AREA OF NORTHERN SPARTANBURG AND NORTHERN CHEROKEE COUNTIES.

SOME SEVERE WEATHER HAS BEEN REPORTED FROM A LINE OF SEVERE
THUNDERSTORMS IN THE ASHEVILLE AREA IN NORTH CAROLINA.  A PART OF THIS
LINE APPEARED TO BE DROPPING SOUTHEAST TOWARD THE UPSTATE.  WARNINGS
COULD BE REQUIRED SOON IN THE UPSTATE IF DEVELOPMENT CONTINUES.

LISTEN FOR LATER STATEMENT S AND POSSIBLE WARNINGS.

JONES
Special weather statement, Aug 21, 4:48 PM EDT, 56 minutes before
NCZ008-181945-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLOTTE NC
445 PM EDT TUE AUG 21 1990

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PORTIONS OF WESTERN AND
CENTRAL NORTH AND SOUTH CAROLINA.  THIS INCLUDES BUT IS NOT LIMITED
TO THE FOLLOWING NORTH CAROLINA COUNTIES ... CLEVELAND ... CATAWBA
... LINCOLN ... GASTON ... MECKLENBURG ... CABARRUS ... UNION ...
ANSON ... STANLY ... MONTGOMERY ... RICHMOND ... IREDELL ... AND
ROWAN.  IN SOUTH CAROLINA THIS WATCH INCLUDES ... BUT IS NOT LIMITED
TO ... CHEROKEE ... YORK ... CHESTER ... AND LANCASTER.

AT 4:35 PM EDT ... CHARLOTTE WEATHER RADAR SHOWED NUMEROUS SHOWERS
AND THUNDERSTORMS SCATTERED OVER THE MOUNTAINS ... PIEDMONT ... AND
SANDHILLS OF NORTH CAROLINA AND OVER WESTERN SOUTH CAROLINA.
THUNDERSTORMS WITH HEAVY RAIN WERE OVER CENTRAL CLEVELAND AND
NORTHWESTERN GASTON COUNTIES OF NORTH CAROLINA.  THESE THUNDERSTORMS
WERE MOVING TOWARD THE SOUTH ABOUT 5 MPH.  THIS MOVEMENT WILL BRING
THUNDERSTORMS WITH HEAVY RAIN INTO THE TOWNS OF GASTONIA AND KINGS
MOUNTAINS ... BOTH IN NORTH CAROLINA.

THUNDERSTORMS WITH VERY HEAVY RAINS WERE ALSO OVER ANSON COUNTY OF
NORTH CAROLINA.  THIS THUNDERSTORM WAS MOVING TOWARD THE SOUTHEAST
AND THE TOWN OF WADESBORO AT ABOUT 5 MPH.

MANY REPORTS OF HEAVY RAINS ... SMALL HAIL ... STRONG AND GUSTY WINDS
... AND FREQUENT LIGHTNING HAVE BEEN RECEIVED THIS AFTERNOON.
EVERYONE IN THE WATCH AREA SHOULD TAKE THIS OPPORTUNITY TO SECURE ANY
LOOSE OBJECTS THAT MIGHT BECOME AIRBORNE.

REPORT ANY SEVERE WEATHER TO YOUR LOCAL POLICE DEPARTMENT AND REQUEST
THEM TO RELAY THE INFORMATION TO THE NATIONAL WEATHER SERVICE.

AT 3:18 PM EDT ... AN AMATEUR RADIO OPERATOR NEAR THE TOWN OF
LONGVIEW IN SOUTHWESTERN CATAWBA COUNTY OF NORTH CAROLINA REPORTED
HAIL BETWEEN ONE QUARTER AND ONE HALF INCH.

AT 3:38 PM EDT ... AN AMATEUR RADIO OPERATOR NEAR THE TOWN OF
DELLWOOD IN CLEVELAND COUNTY OF NORTH CAROLINA REPORTED HAIL BETWEEN
ONE QUARTER AND ONE HALF INCH.

AT 3:57 PM EDT ... AN AMATEUR RADIO OPERATOR REPORTED HAIL BETWEEN
ONE QUARTER AND ONE HALF INCH FALLING NEAR THE TOWN OF FALLSTON IN
CLEVELAND COUNTY OF NORTH CAROLINA.

AT 3:59 PM EDT ... AN AMATEUR RADIO OPERATOR 4 MILES NORTH OF THE
TOWN OF CHERRYVILLE IN LINCOLN COUNTY REPORTED HAIL FALLING BETWEEN
ONE QUARTER AND ONE HALF INCH AND WINDS ESTIMATED BETWEEN 39 AND 46
MPH.

THE NEXT STATEMENT WILL BE ISSUED BY THIS OFFICE AROUND 645 PM EDT
... UNLESS WORSIENING WEATHER REQUIRES AN EARLIER ISSUANCE.

CLARK
Special weather statement, Aug 21, 5:24 PM EDT, 20 minutes before
SCZ001>004-212220-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
522 PM EDT TUE AUG 21 1990

...SEVERE THUNDERSTORM WATCH UNTIL 1000 PM INCLUDES ALL UPSTATE
COUNTIES...

A STRONG THUNDERSTORM WEST OF THE GREENVILLE-SPARTANBURG AIRPORT
WAS PRODUCING AN UNUSUAL AMOUNT OF INTENSE CLOUD TO GROUND
LIGHTNING AT 520 PM.  THIS STORM WILL SLOWLY MOVE INTO THE
GREER AREA.  IT WAS ALSO PRODUCING VERY HEAVY RAINFALL.

LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

JONES

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 21, 4:27 PM EDTSevere Thunderstorm WarningGSPUnion41 min
Aug 21, 5:31 PM EDTSevere Thunderstorm WarningGSPCherokee44 min

Nearby

Flash Flood Warnings in South Carolina, 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.