Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 50, NWS Columbia, SC

April 22, 1998Aiken County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Apr 22, 1998, 2:42 PM EDT for Aiken County, South Carolina. It was in force for 63 min. 4 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 22, 1998, 2:42 PM EDT (18:42 UTC)
Expired
Apr 22, 1998, 3:45 PM EDT
In force
63 min
Issued by
NWS Columbia, SC
Area
Whole counties

County Aiken County, SC

The radar

The Columbia radar (KCAE), 66 km from the middle of the area, began a volume at 18:42 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Apr 22, 2:58 PM EDTHail 0.75North Augusta, SCTV 12 spotters report 3/4 inch hail in North Augusta.
Apr 22, 3:05 PM EDTHail 0.75Clearwater, SCSKYWARN spotters report 3/4 inch hail.
Apr 22, 3:25 PM EDTHail 0.88Aiken, SCSKYWARN spotter reported nickel size hail at highways 302 and 278.
Apr 22, 3:30 PM EDTHail 0.88Aiken, SCSKYWARN spotter reported nickel size hail at highways 302 and 78.

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.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 6.7 hours before the alert went out and 168 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, Charleston AFB, SC at 12:00Z on 1998-04-22Temperature 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, Charleston AFB, SC at 12:00Z on 1998-04-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1422 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
-7 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.

776 
WUUS1 KCAE 221843 RRA
SVRCAE
SCC003-221945-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
242 PM EDT WED APR 22 1998

THE NATIONAL WEATHER SERVICE IN COLUMBIA SC HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  AIKEN COUNTY IN SOUTH CAROLINA

* UNTIL 345 PM EDT 

* AT 243 PM...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE 
  THUNDERSTORM IN THE AUGUSTA VICINITY MOVING EAST AT 25 MPH 
  ALONG HIGHWAY 1.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NORTH AUGUSTA AT 250 PM
  AIKEN AT 315

AMATEUR RADIO AND OTHER SPOTTERS ARE REQUESTED TO MONITOR THIS 
STORM AND RELAY REPORTS PROMPTLY TO THE NEAREST NATIONAL WEATHER 
SERVICE OFFICE.

HG

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 22, 2:22 PM EDT, 20 minutes before
SCZ015-016-018-020-021-022-025-026-027-028-029-030-031-035-
036-037-038-041-GAZ040-063-064-065-077-230222-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
222 PM EDT WED APR 22 1998

THE OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES IN SOUTH CAROLINA:

AIKEN        BAMBERG      BARNWELL     CALHOUN      CHESTERFIELD
CLARENDON    EDGEFIELD    FAIRFIELD    KERSHAW      LANCASTER
LEE          LEXINGTON    MCCORMICK    NEWBERRY     ORANGEBURG
RICHLAND     SALUDA       SUMTER

THE OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES IN GEORGIA:

BURKE        COLUMBIA     LINCOLN      MCDUFFIE     RICHMOND

...ISOLATED SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON AND EVENING...

AN UPPER LEVEL DISTURBANCE WILL MOVE OVER CENTRAL SOUTH CAROLINA AND THE
CENTRAL SAVANNAH RIVER AREA OF EAST CENTRAL GEORGIA THIS AFTERNOON AND
EVENING. THIS WILL HELP TO DESTABLIZE THE ATMOSPHERE AND AID IN THE
DEVELOPMENT OF THUNDERSTORMS. THE MAIN THREAT WILL BE FROM HAIL 3/4 TO
1 INCH IN SIZE. THESE STORMS COULD PRODUCE BRIEF HEAVY RAINFALL AMOUNTS
OF AROUND 1 INCH WITH WIND GUSTS TO 30 MPH.

EMERGENCY PREPAREDNESS OFFICIALS ARE REQUESTED TO REMAIN ALERT AND
MAKE PRELIMINARY PLANS TO DEAL WITH SEVERE WEATHER SHOULD IT OCCUR.
SEVERE WEATHER SPOTTERS...INCLUDING AMATEUR RADIO OPERATORS...
SHOULD MONITOR THIS WEATHER SITUATION AND RELAY REPORTS PROMPTLY
TO THE NEAREST NATIONAL WEATHER SERVICE OFFICE.

TTH
Special weather statement, Apr 22, 2:22 PM EDT, 20 minutes before
SCZ015-016-018-020-021-022-025-026-027-028-029-030-031-035-
036-037-038-041-GAZ040-063-064-065-077-230222-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
222 PM EDT WED APR 22 1998

THE OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES IN SOUTH CAROLINA:

AIKEN        BAMBERG      BARNWELL     CALHOUN      CHESTERFIELD
CLARENDON    EDGEFIELD    FAIRFIELD    KERSHAW      LANCASTER
LEE          LEXINGTON    MCCORMICK    NEWBERRY     ORANGEBURG
RICHLAND     SALUDA       SUMTER

THE OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES IN GEORGIA:

BURKE        COLUMBIA     LINCOLN      MCDUFFIE     RICHMOND

...ISOLATED SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON AND EVENING...

AN UPPER LEVEL DISTURBANCE WILL MOVE OVER CENTRAL SOUTH CAROLINA AND THE
CENTRAL SAVANNAH RIVER AREA OF EAST CENTRAL GEORGIA THIS AFTERNOON AND
EVENING. THIS WILL HELP TO DESTABLIZE THE ATMOSPHERE AND AID IN THE
DEVELOPMENT OF THUNDERSTORMS. THE MAIN THREAT WILL BE FROM HAIL 3/4 TO
1 INCH IN SIZE. THESE STORMS COULD PRODUCE BRIEF HEAVY RAINFALL AMOUNTS
OF AROUND 1 INCH WITH WIND GUSTS TO 30 MPH.

EMERGENCY PREPAREDNESS OFFICIALS ARE REQUESTED TO REMAIN ALERT AND
MAKE PRELIMINARY PLANS TO DEAL WITH SEVERE WEATHER SHOULD IT OCCUR.
SEVERE WEATHER SPOTTERS...INCLUDING AMATEUR RADIO OPERATORS...
SHOULD MONITOR THIS WEATHER SITUATION AND RELAY REPORTS PROMPTLY
TO THE NEAREST NATIONAL WEATHER SERVICE OFFICE.

TTH
Local storm report, Apr 22, 2:25 PM EDT, 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
225 PM EDT WED APR 22 1998

TIME (EDT) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

223 PM     GROVETOWN                 GA   .75 INCH HAIL
04/22/98   RICHMOND                       DIME SIZE HAIL COVERING
                                          THE GROUND

225 PM     SOUTHERN COLUMBIA COUNTY  GA   .75 INCH HAIL
04/22/98   COLUMBIA                       DIME SIZE HAIL REPORTED BY
                                          SPOTTER SCOTT SHERMAN

HG

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 22, 3:26 PM EDTSevere Thunderstorm WarningCAESaluda64 min
Apr 22, 3:54 PM EDTSevere Thunderstorm WarningCAELexington66 min
Apr 22, 5:12 PM EDTSevere Thunderstorm WarningCAELexington, Richland33 min
Apr 22, 6:44 PM EDTSevere Thunderstorm WarningCAEChesterfield46 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 1998Every severe thunderstorm warning in 1998

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; radar from the NEXRAD Level II archive.