Alert archive / South Carolina / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 390, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Sep 9, 2009, 5:38 PM EDT for Laurens County, Union County, South Carolina. It was in force for 35 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
- Sep 9, 2009, 5:38 PM EDT (21:38 UTC)
- Expired
- Sep 9, 2009, 6:13 PM EDT
- In force
- 35 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
Counties Laurens County, SC, Union County, SC
The radar
The Greer radar (KGSP), 50 km from the middle of the area, began a volume at 21:39 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
Charleston AFB, SC (KCHS), launched 12:00Z, 9.6 hours before the alert went out and 251 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
- 952 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 463 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 5 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -0.7
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 9, 4:56 PM EDT, 42 minutes earlier.
Area forecast discussion, Sep 9, 4:56 PM EDT, 42 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 335 PM EDT WED SEP 9 2009 GAZ010-017-018-026-028-029-NCZ035>037-051>053-056>059-062>065- 068>072-082-507>510-SCZ001>014-019-101945- RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-ALEXANDER-IREDELL- DAVIE-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-ROWAN-GRAHAM-NORTHERN JACKSON- MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-CLEVELAND-LINCOLN- GASTON-MECKLENBURG-CABARRUS-UNION NC-RUTHERFORD MOUNTAINS- GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-OCONEE MOUNTAINS- PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE- GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK- ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD- 335 PM EDT WED SEP 9 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. SCATTERED TO NUMEROUS THUNDERSTORMS WILL SWEEP WEST TO EAST ACROSS THE WESTERN CAROLINAS AND NORTHEAST GEORGIA THIS AFTERNOON AND EVENING. A FEW OF THESE STORMS MAY BE SEVERE...PRODUCING LARGE HAIL AND/OR DAMAGING WINDS. THUNDERSTORM CHANCES WILL LINGER INTO THE NIGHT AND LOCALLY STRONG STORMS MAY BE SEEN AS WELL. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE HAIL...DAMAGING WINDS...OR FLASH FLOODING TO OUR OFFICE. NCZ033-048>050-501>506-101945- AVERY-MADISON-YANCEY-MITCHELL-CALDWELL MOUNTAINS-GREATER CALDWELL- BURKE MOUNTAINS-GREATER BURKE-MCDOWELL MOUNTAINS-EASTERN MCDOWELL- 335 PM EDT WED SEP 9 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. SCATTERED TO ISOLATED THUNDERSTORMS MAY CONTINUE TO DEVELOP ACROSS THE NORTHERN MOUNTAINS AND ADJACENT FOOTHILLS THROUGH THE EVENING. THESE STORMS MAY PRODUCE OCCASIONAL CLOUD TO GROUND LIGHTNING AND PERIODS OF HEAVY RAIN. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE HAIL...DAMAGING WINDS...OR FLASH FLOODING TO OUR OFFICE.
In the hours before
Local storm report, Sep 9, 4:59 PM EDT, 39 minutes before
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</html>Local storm report, Sep 9, 5:06 PM EDT, 32 minutes before
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</html>Local storm report, Sep 9, 5:12 PM EDT, 26 minutes before
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</html>Special weather statement, Sep 9, 5:14 PM EDT, 24 minutes before
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</html>Local storm report, Sep 9, 5:15 PM EDT, 23 minutes before
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</html>Local storm report, Sep 9, 5:21 PM EDT, 17 minutes before
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</html>The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 1:02 AM EDT | Severe Thunderstorm Warning | GSP | Burke | 58 min |
| Sep 9, 3:11 AM EDT | Severe Thunderstorm Warning | GSP | McDowell, Rutherford | 64 min |
| Sep 9, 3:15 AM EDT | Severe Thunderstorm Warning | GSP | Madison | 60 min |
| Sep 9, 4:48 AM EDT | Severe Thunderstorm Warning | GSP | Cleveland, Rutherford | 57 min |
| Sep 9, 11:58 AM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Madison | 62 min |
| Sep 9, 12:43 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe | 62 min |
| Sep 9, 1:43 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Madison | 36 min |
| Sep 9, 1:46 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Henderson | 59 min |
| Sep 9, 2:01 PM EDT | Severe Thunderstorm Warning | GSP | Burke, McDowell | 59 min |
| Sep 9, 2:13 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe, McDowell | 62 min |
| Sep 9, 2:26 PM EDT | Severe Thunderstorm Warning | GSP | Haywood, Jackson | 50 min |
| Sep 9, 2:33 PM EDT | Severe Thunderstorm Warning | GSP | Henderson, Polk | 57 min |
| Sep 9, 3:27 PM EDT | Severe Thunderstorm Warning | GSP | Polk | 63 min |
| Sep 9, 3:46 PM EDT | Severe Thunderstorm Warning | GSP | Henderson | 59 min |
| Sep 9, 3:50 PM EDT | Severe Thunderstorm Warning | GSP | Transylvania | 55 min |
| Sep 9, 4:07 PM EDT | Severe Thunderstorm Warning | GSP | Greenville, Laurens, Spartanburg | 53 min |
| Sep 9, 4:27 PM EDT | Severe Thunderstorm Warning | GSP | Oconee | 48 min |
| Sep 9, 4:51 PM EDT | Severe Thunderstorm Warning | GSP | Laurens, Spartanburg, Union | 54 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2009Every severe thunderstorm warning in 2009
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.