Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 288, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 23, 1998, 2:42 PM EDT for Greenwood County, South Carolina. It was in force for 33 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
- Jul 23, 1998, 2:42 PM EDT (18:42 UTC)
- Expired
- Jul 23, 1998, 3:15 PM EDT
- In force
- 33 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
County Greenwood County, SC
The radar
The Greer radar (KGSP), 82 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 23, 2:45 PM EDT | Thunderstorm Wind 50 | Greenwood, 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.7 hours before the alert went out and 236 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
- 764 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 747 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- -19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 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 Jul 22, 2:54 PM EDT, 23 hours 48 minutes earlier.
Area forecast discussion, Jul 22, 2:54 PM EDT, 23 hours 48 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE/SPARTANBURG, SC 254 PM EDT WED JUL 22 1998 CIRCULATION AROUND UPPER LOW OVER HUDSON BAY WILL BUILD SOUTHWARD INTO CWA THROUGH FRIDAY. WEAK COLD FRONT OVER GREAT LAKES WILL PUSH SOUTH INTO MID- ATLANTIC AREA AND MERGE INTO LEE SIDE TROF THAT WILL PERSIST THRU THE CAROLINA. SEE LITTLE TEMP CHANGE THE NEXT FEW DAYS EXCEPT POSSIBLE FEW DEGREE LOWERING DUE TO SLIGHT INCREASE IN CLDS AND PRECIP. HEAT INDICES SHOULD CONTINUE TO MAX OUT IN THE 100 TO 105 AREA OVER MOST LOCATIONS IN FOOTHILLS AND PIEDMONT. PRECIP CURRENTLY AROUND CWA SHOULD CONTINUE WITH DAYS HEATING AND DECREASE QUICKLY AFTER...BUT EXPECT ACTIVITY PATTERN TO SHIFT SOUTHEAST WITH BEST MOISTURE CONVG AND OMEGA UPLIFT. AVL 65/86/63/85 2/4/2/3 CLT 74/93/72/91 2/4/3/3 GSP 73/92/71/91 2/4/3/3 NEAL
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 6:11 PM EDT | Severe Thunderstorm Warning | GSP | Polk, Rutherford | 44 min |
| Jul 23, 5:06 PM EDT | Severe Thunderstorm Warning | GSP | York | 49 min |
| Jul 23, 6:11 PM EDT | Severe Thunderstorm Warning | GSP | Cherokee | 44 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.