Alert archive / South Carolina / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 243, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 2, 2002, 4:33 PM EDT for Union County, South Carolina. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 2, 2002, 4:33 PM EDT (20:33 UTC)
- Expired
- Aug 2, 2002, 5:15 PM EDT
- In force
- 42 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
County Union County, SC
The radar
The Greer radar (KGSP), 59 km from the middle of the area, began a volume at 20:36 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.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.6 hours before the alert went out and 220 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
- 1645 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1274 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
437 WUUS52 KGSP 022033 SVRGSP SCC087-022115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 433 PM EDT FRI AUG 2 2002 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... UNION COUNTY IN UPSTATE SOUTH CAROLINA * UNTIL 515 PM EDT * AT 433 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 5 MILES SOUTHWEST OF UNION...OR ABOUT 4 MILES SOUTH OF BUFFALO...MOVING SOUTHWEST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... SEDALIA AT 505 PM EDT. CROSS KEYS AT 515 PM EDT. PEOPLE IN THE PATH OF THIS SEVERE THUNDERSTORM SHOULD BE ALERT FOR LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR WITH ANY THUNDERSTORM. $$ RWH
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 Aug 2, 3:04 PM EDT, 1 hour 29 minutes earlier.
Area forecast discussion, Aug 2, 3:04 PM EDT, 1 hour 29 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 304 PM EDT FRI AUG 2 2002 SCT CONVECTION ONGOING ATTM. BEST COVERAGE OVER MTNS...BUT WILL EXPAND OVER THE SOUTHERN SECTIONS. SOME OF THE CELLS ARE STRONG AND CANNOT RULE OUT AN ISOLATED SEVERE STORM THIS EVENING. POP IN THE ZONES WILL BE HIER THAN CCF POP BELOW...BUT STILL SCT. AFTER THIS EVENING MOISTURE DECREASES OVER THE AREA. THETA-E VALUES DECREASE SIGNIFICANTLY. EVEN WITH CONTINUED COOL MID LEVEL TEMPS ATMOS REMAINS STABLE SATURDAY. MOISTURE GREATER TO OUR NORTH SO FOR NOW WILL CONTINUE WITH NO PRECIP. SUNDAY COULD BE INTERESTING. AVN LONE MDL INDICATING TREMENDOUS MOISTURE AND LIFT INCREASE FROM THE SOUTH...SPREADING PRECIP ACROSS ALL CWFA. WILL HOLD OFF ON THAT SCENARIO FOR NOW...BUT WILL INCREASE CLOUDS OVER THE AREA AS ETA DOES SHOW UPSLOPE FLOW AND A LITTLE MOISTURE INCREASE. TEMPS SAT MAYBE A COUPLE OF DEGREES COOLER THAN TODAY. TRENDED A LITTLE COOLER SUNDAY WITH MORE CLOUDS...BUT NOT AS COOL AS THE MAV. GSP 70 93 68 88 / 20 10 10 20 AND 70 93 69 88 / 20 10 10 20 CLT 70 93 69 89 / 20 10 10 20 HKY 68 91 68 88 / 20 20 10 20 AVL 65 88 63 84 / 20 10 10 20 .GSP... GA...NONE. NC...NONE. SC...NONE. RWH
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 3:54 PM EDT | Severe Thunderstorm Warning | GSP | York | 51 min |
| Aug 2, 5:27 PM EDT | Severe Thunderstorm Warning | GSP | Laurens | 48 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2002Every severe thunderstorm warning in 2002
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; radar from the NEXRAD Level II archive.