Alert archive / South Carolina / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 380, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Sep 4, 2003, 1:11 PM EDT for Laurens County, South Carolina. It was in force for 64 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 4, 2003, 1:11 PM EDT (17:11 UTC)
- Expired
- Sep 4, 2003, 2:15 PM EDT
- In force
- 64 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Counties, with a storm outline in the text
County Laurens County, SC
The radar
The Greer radar (KGSP), 49 km from the middle of the area, began a volume at 17:13 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, 5.2 hours before the alert went out and 256 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
- 1981 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 512 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 4, 12:20 PM EDT, 51 minutes earlier.
Area forecast discussion, Sep 4, 12:20 PM EDT, 51 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1220 PM EDT THU SEP 4 2003 ...FLOOD WATCH EXTENDED UNTIL 400 PM FOR OUR NORTHERN MOUNTAIN COUNTIES... PREVIOUS DISCUSSION FOLLOWS... BAND OF PRECIPITATION ASSOCIATED WITH APPROACHING UPPER-LEVEL TROUGH NOW MOVING ACROSS MOUNTAINS. ISENTROPIC LIFT CONTRIBUTING TO THIS RAIN GRADUALLY SHIFTS EASTWARD TAKING MOST FAVORABLE FORCING FOR UPWARD MOTION INTO THE MID-ATLANTIC LATER TODAY. PLAN TO INCREASE POPS A LITTLE EAST OF THE MOUNTAINS... ESPECIALLY ACROSS OUR NORTHERN ZONES. FLOOD WATCH WILL BE MAINTAINED FOR THE SHORT TERM... BUT IT IS SCHEDULED TO EXPIRE AT NOON EDT. IF SIGNIFICANT RAINFALL CONTINUES IN WATCH AREA AS EXPIRATION TIME APPROACHES... WILL EXTEND WATCH FOR SEVERAL MORE HOURS. THAT DECISION WILL BE MADE LATER THIS MORNING. .GSP... GA...NONE. NC...FLOOD WATCH UNTIL 400 PM FOR AVERY... YANCEY... AND MITCHELL COUNTIES. SC...NONE. LGL
Hazardous weather outlook, Sep 4, 6:05 AM EDT, 7 hours 6 minutes before
GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014- 019-041200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 605 AM EDT THU SEP 4 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA... UPSTATE SOUTH CAROLINA...AND EXTREME NORTHEAST GEORGIA. .DAY ONE...TODAY NUMEROUS THUNDERSTORMS ARE EXPECTED THIS MORNING...AND A FLOOD WATCH IS IN EFFECT FOR THE NORTH CAROLINA MOUNTAINS UNTIL NOON. THUNDERSTORMS WILL DIMINISH FROM THE WEST THIS AFTERNOON...BECOMING SCATTERED TONIGHT. .DAYS TWO THROUGH SEVEN... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. 07
Nearby
Severe Thunderstorm Warnings in South Carolina, 2003Every severe thunderstorm warning in 2003
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.