Alert archive / South Carolina / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 21, NWS Greenville-Spartanburg, SC

April 29, 1991Anderson County, Pickens County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 29, 1991, 4:41 PM EDT for Anderson County, Pickens County, South Carolina. It was in force for 64 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 29, 1991, 4:41 PM EDT (20:41 UTC)
Expired
Apr 29, 1991, 5:45 PM EDT
In force
64 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

Counties Anderson County, SC, Pickens County, SC

What was reported inside it

TimeReportWhereRemark
Apr 29, 4:57 PM EDTHail 1.75Anderson, SC
Apr 29, 5:15 PM EDTHail 2.75Anderson, SC
Apr 29, 5:28 PM EDTHail 1.75Pickens, SC

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Athens Municipal, GA (KAHN), launched 12:00Z, 8.7 hours before the alert went out and 101 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 1991-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 466 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 1991-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 191 square meters per square second.193958Sfc1 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
466 J/kg
Mixed-layer CIN
-85 J/kg
Mixed-layer LCL
677 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
191 m²/s²
0-3 km storm-relative helicity
221 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KGSP 292044
SVRGSP
SCC007-077-292145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
441 PM EDT MON APR 29 1991
 
THE NATIONAL WEATHER SERVICE IN GREENVILLE SPARTANBURG HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN  SOUTH CAROLINA
 
   ...ANDERSON COUNTY...PICKENS COUNTY
 
WEATHER RADAR DETECTED SEVERAL LARGE THUNDERSTOMS MOVING INTO
ANDERSON AND PICKENS COUNTIES OF SOUTH CAROLINA AT 440 PM EDT WITH
POSSIBLE LARGE HAIL AND DAMAGING WINDS. THE STORMS WERE MOVING
TO THE NORTHEAST ABOUT 40 MILES AN HOUR.
 
 
ALTHOUGH NO TORNADOES HAVE BEEN DETECTED WITH THIS STORM...A
TORNADO WATCH REMAINS IN EFFECT. TORNADOES CAN DEVELOP WITHOUT
WARNING FROM A SEVERE THUNDERSTORM.
 
PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT FOR LARGE HAIL AND
DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR
WITH A,NY THUNDERSTORM.

What forecasters said that day

The local office's own words before this severe thunderstorm 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, Apr 29, 2:50 PM EDT, 1 hour 51 minutes before
NCZ007-009-010-011-012-013-292030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ASHEVILLE NC
250 PM EDT MON  APR 29 1991

...TORNADO WATCH CONTINUES IN EFFECT UNTIL 9 PM TONIGHT FOR ALL 21
COUNTIES OF WESTERN NORTH CAROLINA...

AT 245 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SHOWERS AND THUNDERSTORMS..SOME HEAVY..ON A BRYSON CITY-FRANKLIN LINE
EXTENDING SOUTHWEST INTO NORTHEAST GEORGIA. THIS LINE WAS MOVING SLOWLY
TOWARD THE EAST WITH STORM CELLS IN THE LINE MOVING NORTHEAST AT 40 MPH.
THIS MOVEMENT WILL BRING THE STORMS INTO JACKSON AND HAYWOOD COUNTIES
BY 315 PM. HEAVY RAINFALL ASSOCIATED WITH THE THUNDERSTORMS WILL LIKELY
CAUSE SOME LOCAL SMALL STREAM AND URBAN FLOODING AS THE STORMS PASS.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE ALERT FOR THREATENING WEATHER
CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
COLE
Special weather statement, Apr 29, 2:50 PM EDT, 1 hour 51 minutes before
NCZ007-008-014-291900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLOTTE NC
245 PM EDT MON APR 29 1991

... A TORNADO WATCH REMAINS IN EFFECT FOR A LARGE PORTION OF NORTH
AND SOUTH CAROLINA UNTIL 9 PM TONIGHT...

AT 245 THIS AFTERNOON WEATHER RADAR SHOWED HEAVY RAIN IN
THUNDERSTORMS SCATTERED THOUGHOUT THE AREA WITHIN 75 MILES OF
CHARLOTTE.  AT THAT TIME THE GREATEST CONCENRATION OF THUNDERSTORM
ACTIVITY WAS FROM STATESVILLE NOTHEAST TO LEXINGTON THEN SOUTH
THROUGH THE YADKIN RIVER BASIN OVER LAKES BADIN AND TILLERY TO
PAGELAND AND BENNETTSVILLE SOUTH CAROLINA.

EVERYONE ON THE YADKIN...PEE DEE RIVER FROM THE NORTHERN PORTION OF
HIGH ROCK LAKE SOUTH ACROSS BADIN AND TILLERY LAKES INTO SOUTH
CAROLINA SHOULD SEEK SAFE HARBOR IMMEDIATELY.

MOVEMENT OF THE STORMS CONTINUED TO BE TOWARD THE NORTHEAST AT 35 TO
40 MPH. THIS MOVEMENT MEANS RICHMOND... MONTGOMERY... STANLY AND
ANSON COUNTIES IN NORTH CAROLINA WILL EXPERIENCE THUNDERSTORMS
THROUGH 4 THIS AFTERNOON.

PERIODS OF RAIN HEAVY ENOUGH TO CAUSE FLOODING OF LOW LYING AREAS...
INCREASING GUSTY WINDS AND DEADLY LIGHTNING SHOULD BE ANTICIPATED
THROUGHOUT THE AREA THIS AFTERNOON AND EVENING.

THE NEXT STATEMENT WILL BE ISSUED JUST PRIOR TO 4 PM.  HOWEVER... BE
ALERT IN THE EVENT A WARNING IS ISSUED IN THE MEANTIME.

RK
Special weather statement, Apr 29, 3:47 PM EDT, 54 minutes before
NCZ007-008-014-292100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLOTTE NC
350 PM EDT MON APR 29 1991

... A TORNADO WATCH REMAINS IN EFFECT FOR A LARGE PORTION OF NORTH
AND SOUTH CAROLINA UNTIL 9 PM TONIGHT...

... THUNDERSTORMS WITH HEAVY RAIN WELL EAST OF CHARLOTTE WHILE NEW
DEVELOPMENT TAKES PLACE WELL TO THE WEST OF THE QUEEN CITY...

AT 345 THIS AFTERNOON WEATHER RADAR SHOWED VERY HEAVY RAIN IN
THUNDERSTORMS OVER EXTREME WESTERN RICHMOND COUNTY OF NORTH CAROLINA.
THIS THUNDERSTORM WAS OVER THE PEE DEE RIVER SOME 15 MILES NORTHWEST
OF ROCKINGHAM AND NEAR BLEWETT FALLS LAKE.

AT THE SAME TIME HEAVY RAIN IN THUNDERSTORMS WERE NOTED OVER CENTRAL
RUTHERFORD COUNTY OF NORTH CAROLINA 12 TO 18 MILES WEST OF SHELBY.

MOVEMENT OF THE STORMS CONTINUED TO BE TOWARD THE NORTHEAST AT 35 TO
40 MPH.

THE SOUTHEASTERN ONE HALF OF MONTGOMERY COUNTY AND THE NORTHWESTERN
ONE THIRD OF RICHMOND COUNTY SHOULD BRACE FOR THUNDERSTORMS THROUGH 5
OCLOCK.  AND... EVERYONE IN CLEVELAND COUNTY SHOULD EXPECT
THUNDERSTORMS BETWEEN 4 AND 5 OCLOCK.

IN ADDITION TO SEVERE WEATHER PERIODS OF RAIN HEAVY ENOUGH TO CAUSE
FLOODING OF LOW LYING AREAS... INCREASING GUSTY WINDS AND DEADLY
GLIGHTNING SHOULD BE ANTICIPATED THROUGHOUT THE AREA THIS AFTERNOON
AND EVENING.

THE NEXT STATEMENT WILL BE ISSUED JUST PRIOR TO 5 PM.  HOWEVER... BE
ALERT IN THE EVENT A WARNING IS ISSUED IN THE MEANTIME.

RK
Special weather statement, Apr 29, 3:47 PM EDT, 54 minutes before
SCZ001>004-292030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
345PM EDT MON APR 29 1991

...TORNADO WATCH IN EFFECT FOR MOST OF UPSTATE SOUTH CAROLINA UNTIL
9PM EDT THIS MONDAY EVENING....

...LINE OF THUNDERSTORMS NOW ALONG THE WEST PORTION OF OCONEE COUNTY
EXTENDING SOUTHWESTWARD THROUGH GEORGIA INTO ALABAMA.

AT 340PM...THE WEATHER RADAR SHOWED A LINE OF THUNDERSTORMS EXTENDING
FROM WESTERN NORTH CAROLINA ALONG THE WEST PORTION OF OCONEE COUNTY.
THE LINE OF STORMS IS MOVING EASTWARD WHILE THE INDIVIDUAL STORM CELLS
ARE MOVING TOWARD THE NORTHEAST NEAR 40 MPH. SMALL HAIL AND GUSTY WINDS
HAVE BEEN REPORTED AROSS NORTH GEORGIA AS THE STORMS MOVED THROUGH THE
AREA. NICKEL AND DIME SIZE HAIL FELL FROM THE STORMS IN FULTON AND COBB
COUNTIES IN GEORGIA. TREE LIMBS WERE BLOWN OFF AND SOME POWER LINES WERE
REPORTEDLY DOWNED.
PEOPLE IN UPSTATE SOUTH CAROLINA SHOULD BE ALERT FOR THUNDERSTORMS AND
POSSIBLE TORNADOES FOR THE REMAINDER OF THE AFTERNOON AND EVENING.
IF THREATENING WEATHER APPROACHES...MOVE QUICKLY TO A PLACE OF SAFETY.

LISTEN TO NOAA WEATHER RADIO OR LOCAL RADIO OR TV FOR THE LATEST
STATEMENTS AND POSSIBLE WARNINGS AS THIS WEATHER SITU2ATION CONTINUES
TO MOVE INTO AND THROUGH THE UPSTATE AREA.

CURTIS
Special weather statement, Apr 29, 3:57 PM EDT, 44 minutes before
NCZ007-009-010-011-012-013-292130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ASHEVILLE NC
356 PM EDT MON APR 29 1991

...TORNADO WATCH IN EFFECT FOR ALL OF WESTERN NORTH CAROLINA TIL 9 PM...

AT 350 PM EDT...A FEW THUNDERSTORMS WITH HEAVY RAIN WERE LOCATED NEAR
TRYON...JUST SOUTHWEST OF WAYNESVILLE AND WEST OF LAKE TOXAWAY IN THE
MOUNTAINS AND FOOTHILLS OF WESTERN NORTH CAROLINA. THESE STORMS WILL
PRODUCE STRONG GUSTY WINDS...DANGEROUS LIGHTNING AND POSSIBLY SOME
SMALL HAIL AS THEY MOVE NORTHEAST AT 40 MILES AN HOUR.

THESE STORMS ARE PART OF A LINE OF SHOWERS AND THUNDERSTORMS STRETCHING
FROM NORTHEAST TENNESSEE SOUTHWEST THROUGH GEORGIA AND ALABAMA. TORNADO
AND SEVERE THUNDERSTORM WARNINGS HAVE BEEN ISSUED WITH THIS SYSTEM IN
GEORGIA AND ALABAMA. NO SEVERE WEATHER HAS OCCURRED IN WESTERN NORTH
CAROLINA. HOWEVER...TORNADOES AND SEVERE THUNDERSTORMS ARE POSSIBLE IN
AND CLOSE TO THE WATCH AREA. ALSO THUNDERSTORMS MOVING REPEAWTEDLY OVER
THE SAME TERRAIN COULD PRODUCE FLOODING OF STREAMS AND LOW LYING AREAS.

IF YOUR IN WESTERN NORTH CAROLINA...STAY TUNED TO NOAA WEATHER RADIO OR
LOCAL TV AND RADIO FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
CARPENTER
Special weather statement, Apr 29, 4:20 PM EDT, 21 minutes before
NCZ007-008-014-292120-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLOTTE NC
420 PM EDT MON APR 29 1991

...A TORNADO WATCH REMAINS IN EFFECT FOR A LARGE PORTION OF NORTH AND
SOUTH CAROLINA UNTIL 9 PM TONIGHT...

AT 415 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED NEWLY
DEVELOPED STRONG THUNDERSTORMS OVER NORTHERN CLEVELAND COUNTY AND
WESTERN LINCOLN COUNTY. THESE STORMS WERE ABOUT 40 MILES NORTHWEST OF
CHARLOTTE. THE STORMS WERE MOVING NORTHEAST AT AROUND 30 MPH.

THESE THUNDERSTORMS WILL LIKELY BE ACCOMPANIED BY HEAVY DOWNPOURS ...
STRONG GUSTY WINDS ... AND DEADLY LIGHTNING. IN ADDITION ... PERIODS
OF HEAVY RAIN MAY BE ENOUGH TO CAUSE FLOODING OF LOW LYING AREAS
THROUGHO*UT THIS AFTERNOON AND EVENING.

EVERYONE IS ENCOURAGED TO STAY TUNED TO NOAA WEATHER RADIO OR
COMMERCIAL RADIO OR TELEVISION FOR ADDITIONAL UPDATES ON THESE
STORMS.

THE NEXT STATEMENT WILL BE ISSUED AROUND 520 PM EDT.

MATT

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 28, 8:17 PM EDTSevere Thunderstorm WarningGSPUnion58 min
Apr 29, 4:03 PM EDTSevere Thunderstorm WarningGSPOconee57 min
Apr 29, 5:26 PM EDTSevere Thunderstorm WarningGSPGreenville64 min
Apr 29, 6:15 PM EDTSevere Thunderstorm WarningGSPSpartanburg30 min
Apr 29, 6:28 PM EDTSevere Thunderstorm WarningGSPGreenwood47 min
Apr 29, 7:03 PM EDTTornado WarningGSPGreenwood27 min
Apr 29, 7:33 PM EDTTornado WarningGSPGreenwood57 min
Apr 29, 7:49 PM EDTSevere Thunderstorm WarningGSPCherokee, Spartanburg56 min
Apr 29, 7:54 PM EDTFlash Flood WarningGSPGreenville4 hr

Nearby

Severe Thunderstorm Warnings in South Carolina, 1991Every severe thunderstorm warning in 1991

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.