Alert archive / South Carolina / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 182, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Sep 21, 2000, 2:38 AM EDT for Oconee County, South Carolina. It was in force for 37 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
- Sep 21, 2000, 2:38 AM EDT (06:38 UTC)
- Expired
- Sep 21, 2000, 3:15 AM EDT
- In force
- 37 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
County Oconee County, SC
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 21, 3:00 AM EDT | Thunderstorm Wind 50 E | Seneca, 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 00:00Z, 6.6 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
- 1480 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 1314 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS52 KGSP 210639 SVRGSP SCC073-210715- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 238 AM EDT THU SEP 21 2000 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... OCONEE COUNTY IN UPSTATE SOUTH CAROLINA * UNTIL 315 AM EDT * AT 237 AM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM 17 MILES NORTH OF WALHALLA TO 5 MILES EAST OF TOCCOA...MOVING EAST AT 25 MPH. * THE LINE OF SEVERE THUNDERSTORMS WILL BE NEAR... WESTMINSTER AT 245 AM EDT SALEM AT 250 AM EDT OAKWAY AT 255 AM EDT SENECA AT 300 AM EDT SEVERE THUNDERSTORM WINDS CAN REACH SPEEDS OF 60 TO 100 MPH. THESE WINDS BLOW DOWN TREES...POWER LINES...AND SEVERELY DAMAGE MOBILE HOMES AND SOMETIMES BUILDINGS. $$ MOORE
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 Sep 20, 9:07 PM EDT, 5 hours 31 minutes earlier.
Area forecast discussion, Sep 20, 9:07 PM EDT, 5 hours 31 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 907 PM EDT WED SEP 20 2000 REGIONAL 88D MOSAIC INDICATED A COUPLE OF AREAS OF CONCERN FOR THE UPDATE PACKAGE THIS EVENING. TSTMS IN NE GA DEVELOPED IN MODERATELY UNSTABLE AIRMASS (00Z FFC SNDG HAD LI -5/CAPE 2800 J/KG) BEING ENHANCED BY S/WV...DEPICTED BY RUC TO DRIFT NE THRU THE EVENING. INSTABILITY DECREASES GRADUALLY AS ONE HEADS NE ACRS THE CWFA WITH 00Z GSO SNDG LI 0/CAPE 300 J/KG. STORMS ARE TRYING TO MAINTAIN THEMSELVES INTO THE CWFA & MAY ADD A SMALL POP TO ACCOUNT FOR THIS. ACRS EAST TENNESSEE...BROKEN LINE OF TSTMS FIRING IN THETA-E RIDGE ...AS DEPICTED BY ETA...DOES ONLY GRADUALLY WEAKEN THIS FEATURE AS IT SHIFTS INTO THE NC MTNS OVERNIGHT.. IN ADDITION...LINE OF STORMS ALONG OUTFLOW BNDRY IN KY FCST TO INCREASE WITH S/WV ENERGY ACRS WW746 & MOMENTUM MAY BRING TAIL END OF REMNANTS INTO NC MTNS EARLY THU AM AS WELL. .\GSP... GA...NONE. NC...NONE. SC...NONE. CSH
In the hours before
Special weather statement, Sep 20, 11:43 PM EDT, 2 hours 55 minutes before
GAZ010-017-018-026-028-NCZ033-048>054-058-059-062>067-SCZ001>007-010- 211000- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1143 PM EDT WED SEP 20 2000 STRONG TO SEVERE THUNDERSTORMS HAVE DEVELOPED TONIGHT IN PARTS OF EAST TENNESSEE...NORTH GEORGIA...AND NORTH ALABAMA. NATIONAL WEATHER SERVICE OFFICES TO OUR WEST HAVE ISSUED A FEW SEVERE THUNDERSTORM WARNINGS FOR THESE STORMS...AND THERE HAVE BEEN A FEW REPORTS OF LARGE HAIL AND DAMAGING WIND. THESE STORMS WERE STEADILY MOVING TOWARD EXTREME NORTHEAST GEORGIA...AND THE WESTERN CAROLINAS. IT IS LIKELY THAT A NUMBER OF THESE STORMS WILL STILL BE STRONG...CAPABLE OF WIND GUSTS BETWEEN 40 AND 55 MPH AND WITH SOME HAIL. IT IS POSSIBLE A FEW STORMS COULD STILL BE SEVERE...CAUSING DAMAGING WINDS OF 60 MPH OR HIGHER...AND LARGE HAIL. THE STORMS WILL MOVE FROM WEST TO EAST ACROSS THE AREA BETWEEN MIDNIGHT AND DAYBREAK. LISTEN FOR LATER STATEMENTS OR WARNINGS. JONES
Nearby
Severe Thunderstorm Warnings in South Carolina, 2000Every severe thunderstorm warning in 2000
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.