Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 48, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 23, 1998, 3:58 PM EDT for Anderson County, Pickens County, South Carolina. It was in force for 32 min. 1 report 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 23, 1998, 3:58 PM EDT (19:58 UTC)
- Expired
- Apr 23, 1998, 4:30 PM EDT
- In force
- 32 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
Counties Anderson County, SC, Pickens County, SC
The radar
The Greer radar (KGSP), 47 km from the middle of the area, began a volume at 19:59 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 23, 4:15 PM EDT | Hail 0.75 | Liberty, 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.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.0 hours before the alert went out and 295 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 690 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -41 m²/s²
- 0-3 km storm-relative helicity
- -26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
824 WUUS1 KGSP 231959 RRA SVRGSP SCC007-077-232030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 358 PM EDT THU APR 23 1998 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG SC HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN PICKENS COUNTY IN SOUTH CAROLINA NORTHERN ANDERSON COUNTY IN SOUTH CAROLINA * UNTIL 430 PM EDT * AT 358 PM A SEVERE THUNDERSTORM WITH LARGE HAIL WAS LOCATED... 5 MILES SOUTHWEST OF EASLEY...MOVING SOUTHEAST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... PIEDMONT AT 415 PM ALTHOUGH LARGE HAIL IS THE BIGGEST THREAT WITH THIS SEVERE THUNDERSTORM...BRIEF DAMAGING WINDS COULD ALSO OCCUR. NEAL
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.
NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 23, 2:20 PM EDT, 1 hour 38 minutes earlier.
Area forecast discussion, Apr 23, 2:20 PM EDT, 1 hour 38 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 220 PM EDT THU APR 23 1998 DISC: MAIN FCST CHALLENGE THIS PD WL BE DIURNAL CONVECTION ONGOING ACRS MAINLY THE WEST HALF OF THE FA. SAT LOOP INDICATES FAIRLY WELL DEFINED MESOSCALE CIRCULATION DROPPING SSW THROUGH E TN...WHICH APPERAS TO BE FOCUSING THE MOST INTENSE CONVECTION IN THAT AREA. WL HAVE TO DEAL WITH A FEW HOURS OF SHRA/TSRA...SOME WITH HAIL...UNTIL SHORTLY AFTER SUNSET WHEN ACTIVITY WL QUICKLY DECREASE. MY CCF NUMBERS INCLUDE A 20 POP FOR THE PD BEGINNING 00Z...BUT WE WL NEED HIER POPS ERLY IN THE ZONES TO COVER THE LATE AFTN HOURS. OTHW TREND WL BE DECREASING CLDS AND TEMPS IN LINE WITH GUIDANCE. THE REST OF THE SHORT RANGE WL BE DOMINATED BY WARMING IN THE MID/UPPER LVLS...AND RIDGING THROUGHOUT THE ATMOSPHERE. WARMER FWC TEMPS LOOK BEST TO ME...WITH EXPECTED FULL SUN AND 15-20 METER 1000/850 THICKNESS RISES EACH DAY. GSP 43/73/46/80 2000 ... CLT 46/73/50/81 2000 .....RCMD CHC POPS IN THE ZONES BEFORE 00Z. AVL 40/67/42/75 2000 ... JOHNSTONE
In the hours before
Special weather statement, Apr 23, 11:45 AM EDT, 4 hours 13 minutes before
GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014- 019-232145- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1145 AM EDT THU APR 23 1998 ...SHOWERS AND THUNDERSTORMS MAY PRODUCE SMALL HAIL THIS AFTERNOON AND EARLY EVENING... A POCKET OF VERY COLD AIR ALOFT WILL MOVE ACROSS THE AREA TODAY AND HELP TO DESTABILIZE THE ATMOSPHERE. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE REGION THIS AFTERNOON...AND WITH THE COLD AIR ALOFT SOME SMALL HAIL MAY ACCOMPANY THE PRECIPITATION. THE MAJOR LIMITING FACTOR FOR THUNDERSTORM DEVELOPMENT TODAY WILL BE EXTENSIVE CLOUD COVER ACROSS THE REGION...WHICH WILL LIMIT SURFACE HEATING AND INSTABILITY. THE BEST CHANCE FOR HAIL PRODUCING THUNDERSTORMS TODAY WILL BE ACROSS NORTHEAST GEORGIA AND THE WEST HALF OF THE UPSTATE...WHERE THE MOST BREAKS IN THE CLOUDS WILL BE FOUND. KEEP IT RIGHT HERE FOR THE LATEST INFORMATION. JOHNSTONE
Special weather statement, Apr 23, 1:07 PM EDT, 2 hours 51 minutes before
GAZ010-NCZ048-051>053-058-059-062>065-SCZ001>003-232200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 107 PM EDT THU APR 23 1998 ...HAIL PRODUCING THUNDERSTORMS POSSIBLE OVER THE MOUNTAINS THIS AFTERNOON... SOME BREAKS IN THE CLOUDS ACROSS THE AREA...COMBINED WITH VERY COLD AIR ALOFT AND A WEAK UPPER LEVEL DISTURBANCE...WILL LEAD TO THUNDERSTORM DEVELOPMENT ACROSS THE MOUNTAINS THIS AFTERNOON. THE EXTREMELY COLD TEMPERATURES ALOFT ARE FAVORABLE FOR HAIL FORMATION IN ANY SHOWERS OR THUNDERSTORMS WHICH DEVELOP. MOST OF THE HAIL WHICH FALLS WILL BE SMALL...ALTHOUGH A FEW AREAS MAY SEE HAIL SIZES APPROACHING THE SEVERE LIMIT OF THREE QUARTERS OF AN INCH. HAIL THE SIZE OF DIMES AND QUARTERS HAS ALREADY BEEN REPORTED ACROSS EAST TENNESSEE. KEEP IT RIGHT HERE FOR THE LATEST INFORMATION. JOHNSTONE
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.