Alert archive / South Carolina / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 93, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 4, 2001, 5:49 PM EDT for Oconee County, South Carolina. It was in force for 26 min. 2 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
- Jul 4, 2001, 5:49 PM EDT (21:49 UTC)
- Expired
- Jul 4, 2001, 6:15 PM EDT
- In force
- 26 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
County Oconee County, SC
The radar
The Greer radar (KGSP), 79 km from the middle of the area, began a volume at 21:53 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 4, 6:00 PM EDT | Thunderstorm Wind 60 E | Salem, SC | Many trees blown down, some on cars and onto property. |
| Jul 4, 6:10 PM EDT | Thunderstorm Wind 60 E | Walhalla, SC | Numerous trees and power lines down around Keowee Key, and as far west as West Union. One person was trapped in a car by a fallen tree. At least 100 trees were knocked down onto roads, and another 100 on private property. |
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, 9.8 hours before the alert went out and 203 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
- 1145 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 782 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS52 KGSP 042150 SVRGSP SCC073-042215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 549 PM EDT WED JUL 4 2001 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN OCONEE COUNTY IN UPSTATE SOUTH CAROLINA * UNTIL 615 PM EDT * AT 549 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM 11 MILES NORTHEAST OF WALHALLA...OR ABOUT 4 MILES SOUTHEAST OF SALEM...MOVING EAST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... RURAL EASTERN OCONEE COUNTY AT 600 PM EDT PEOPLE IN THE PATH OF THIS SEVERE THUNDERSTORM SHOULD BE ALERT FO2R LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR WITH ANY THUNDERSTORM. $$ NEAL/JONES
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 4, 3:30 PM EDT, 2 hours 19 minutes earlier.
Area forecast discussion, Jul 4, 3:30 PM EDT, 2 hours 19 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 330 PM EDT WED JUL 4 2001 CONVECTION MAINLY SCATTERED OVER CWFA FOR NOW. SHORT WAVE MOVING THRU UPPER TROF HELPING TO SET UP SQUALL LINE TO OUR NORTHWEST. THIS LINE WILL MOVE INTO THE MTNS BY EVENING. SVR TSRA POSSIBLE WITH THE LINE. OTHER STRONG CONVECTION FORMING ALONG LEE TROF OVER FOOTHILLS. ISOLATED SVR TSRA POSSIBLE HERE AS WELL. WILL USE AT LEAST LIKELY POPS ALL AREAS THIS EVENING AS CONVECTION WILL BECOME MORE NUMEROUS. ATMOS DRIES OUT A LITTLE WITH WLY FLOW THU. HOWEVER ANOTHER SHORT WAVE/THERMAL TROF AND SFC FNT MOVE THRU. SCT AFT CONVECTION POSSIBLE...BUT MUCH LESS COVERAGE THAN TODAY. 30 POP SHOULD SUFFICE. HIGHS VARY ONLY A LITTLE AS LOW LEVEL THICKNESSES REMAIN NEARLY THE SAME. HOWEVER LOWS THU AND FRI NITES SHOULD BE LOWER GIVEN CLEAR SKIES AND LOWER DEW POINTS. GSP 70 89 65 90 / 50 30 0 0 AND 70 89 65 90 / 50 30 0 0 CLT 70 89 65 88 / 50 30 0 0 HKY 67 87 63 87 / 50 30 0 0 AVL 65 86 60 85 / 50 30 0 0 .GSP... GA...NONE. NC...NONE. SC...NONE. RWH
In the hours before
Special weather statement, Jul 4, 11:49 AM EDT, 6 hours before
GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014- 019-042100- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1149 AM EDT WED JUL 4 2001 ...A FEW SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON... A WARM...MOIST AND UNSTABLE AIR MASS REMAINS ACROSS THE SOUTHEAST TODAY. AN UPPER LEVEL DISTURBANCE WILL APPROACH THE AREA THIS AFTERNOON WHICH WILL HELP INITIATE THUNDERSTORM DEVELOPMENT. WINDS IN THE MID LEVELS OF THE ATMOSPHERE WILL BE STRONGER TODAY. THE MID LEVELS WILL ALSO BE A LITTLE DRIER. THESE FACTORS MEAN THAT A FEW OF THE STORMS COULD BECOME SEVERE...PRODUCING DAMAGING DOWNBURST WIND GUSTS OVER 58 MPH. ALTHOUGH DAMAGING WINDS ARE THE MAIN THREAT... SOME LARGE HAIL IS ALSO POSSIBLE. THE SEVERE THUNDERSTORM THREAT IS HIGHEST OVER THE NORTHERN MOUNTAINS...NORTHERN FOOTHILLS AND NORTHWEST PIEDMONT OF NORTH CAROLINA. WITH THE INCREASED OUTDOOR ACTIVITY PLANNED TODAY...PERSONS SHOULD TAKE PRECAUTIONS IF ANY THUNDERSTORMS ARE OBSERVED. STRONG GUSTY WINDS...HEAVY RAIN AND FREQUENT CLOUD TO GROUND LIGHTNING CAN OCCUR WITH ANY THUNDERSTORM. PERSONS SHOULD SEEK SHELTER UNTIL THE STORM HAS PASSED. SPOTTER GROUPS ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND EVENING. DISPATCHERS SHOULD ENSURE COUNTY EMERGENCY MANAGEMENT OFFICIALS ARE AWARE OF THIS INFORMATION. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR THE LATEST UPDATES CONCERNING THIS POTENTIAL SEVERE WEATHER SITUATION. RWH
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 7:45 PM EDT | Severe Thunderstorm Warning | GSP | Anderson | 45 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2001Every severe thunderstorm warning in 2001
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.