Alert archive / South Carolina / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 264, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 8, 2008, 3:02 PM EDT for Oconee County, South Carolina; Stephens County, Georgia. It was in force for 58 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
- Jul 8, 2008, 3:02 PM EDT (19:02 UTC)
- Expired
- Jul 8, 2008, 4:00 PM EDT
- In force
- 58 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
Counties Stephens County, GA, Oconee County, SC
The radar
The Greer radar (KGSP), 91 km from the middle of the area, began a volume at 19:05 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, 7.0 hours before the alert went out and 337 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
- 2216 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 755 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- 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 Jul 8, 2:53 PM EDT, 9 minutes earlier.
Area forecast discussion, Jul 8, 2:53 PM EDT, 9 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 253 PM EDT TUE JUL 8 2008 .SYNOPSIS... THE BERMUDA HIGH WILL CONTINUE OVER THE REGION INTO WEDNESDAY. A WEAK COLD FRONT WILL APPROACH THE REGION LATE WEDNESDAY AND WILL MOVE THROUGH ON THURSDAY. THE FRONT SHOULD SETTLE SOUTH OF THE AREA THURSDAY NIGHT WHERE IT WILL SLOWLY WEAKEN THROUGH SATURDAY. ANOTHER WEAK COLD FRONT WILL MOVE DOWN FROM THE GREAT LAKES LATE IN THE WEEKEND AND STALL OUT OVER OR REGION EARLY NEXT WEEK. && .NEAR TERM /THROUGH WEDNESDAY/... WILL BANK ON NMRS SHOWERS/TSTMS DEVELOPING OUT OF THE MTNS AND INTO THE FTHLS/PIEDMONT INTO THIS EVENING AS THE 12 UTC NAM REMAINS RATHER BULLISH WITH THE ACCOMPANYING INCREASE IN LLVL CONVERGENCE. JUST LIKE WHAT WAS FIGURED AFTER THIS MORNING/S ANALYSIS...ISOLATED PULSE SVR STORMS ARE PROBABLE...WITH LOCALLY HVY RAIN THREAT WITH THE ABOVE NORMAL VALUES OF PWAT. CANNOT GUARANTEE THAT DEEP CONVECTIVE ACTIVITY WILL BE COMPLETELY DISSIPATED OVERNIGHT...SO WILL HANG ONTO THE INHERITED SLIGHT CHANCE INTO WEDNESDAY MORNING. AN INCREASE IN LAYER RH AHEAD OF SUBTLE FRONTAL ZONE SHOULD BE ABLE TO PROMOTE NUMEROUS TO SCATTERED SHOWERS/TSTMS ONCE AGAIN WEDNESDAY. FCST SNDGS LOOKING PRETTY SIMILAR TO TODAY...MOIST THROUGHOUT THE COLUMN WITH ONLY ABOUT 10-15 KTS OF STEERING FLOW. && .SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY NIGHT/... AS OF 245 PM TUESDAY...A BROAD AND FLAT UPPER TROUGH WILL PERSIST ACROSS THE FORECAST AREA THROUGH THE SHORT RANGE. SLIGHT BACKING OF THE LOW LEVEL FLOW IS INDICATED AHEAD OF AN APPROACHING SHORTWAVE THURSDAY AFTERNOON. THE AREA WILL ALSO INCREASINGLY COME UNDER THE INFLUENCE OF THE RIGHT ENTRANCE REGION OF THE UPPER JET THURSDAY AFTERNOON. A WEAK COLD FRONT WILL PUSH SOUTHEAST THROUGH THE OHIO VALLEY EARLY IN THE PERIOD BEFORE STALLING NEAR THE NRN TIER OF THE FORECAST AREA THU. THIS WILL ALLOW DEEPER MOISTURE TO POOL ACROSS THE NRN HALF OF THE REGION THU AFTN...WHILE INSTABILITY WILL BE GREATEST ACROSS THE SOUTHERN TIER...AS THE UPPER SUPPORT ARRIVES LATE IN THE DAY. WILL THUS FEATURE POPS IN THE HEALTHY CHANCE RANGE. THE SURFACE PATTERN BECOMES WEAK AS THE FRONT WASHES OUT THROUGH FRIDAY...BUT SOME DEGREE OF LOW LEVEL CONVERGENCE AND MOISTURE WILL PERSIST TO CREATE SCATTERED COVERAGE OF THUNDERSTORMS AGAIN ON FRIDAY AFTERNOON. && .LONG TERM /SATURDAY THROUGH TUESDAY/... AS OF 245 PM TUESDAY...THE EASTERN TROUGH WILL REINFORCE SLIGHTLY OVER THE WEEKEND AS A STRONG UPPER LOW MOVES EAST FROM ONTARIO THROUGH QUEBEC AND DIGS A TROUGH AXIS SOUTHWARD THROUGH THE GREAT LAKES. DIURNAL SCATTERED THUNDERSTORM CHANCES WILL AFFECT MAINLY THE MOUNTAINS IN THE NORTHWEST FLOW OVER THE WEEKEND. A COLD FRONT IS EXPECTED TO MOVE INTO THE FORECAST AREA FROM THE NORTHWEST MONDAY AND STALL ACROSS THE REGION ON TUESDAY. SOME DEGREE OF MODERATE RECOVERY OF HEIGHTS ALOFT IS EXPECTED...BUT WITH CONTINUED LOW LEVEL MOISTURE. THE LOCATION OF THE BEST CONVECTION MONDAY AND TUESDAY AFTERNOON WILL DEPEND LARGELY ON WHERE THE COLD FRONT STALLS...BUT SOLID CHANCE POPS WILL BE NEEDED THROUGHOUT. && .AVIATION /19Z TUESDAY THROUGH SUNDAY/... DEEP CONVECTIVE DEVELOPMENT ACRS THE MTNS EARLY THIS AFTERNOON WILL BE EXPANDING IN CVRG ACRS THE FA THROUGHOUT THE AFTERNOON AND INTO EARLY EVENING. EXPECTED SCATTERED NATURE OF STORMS WILL LIMIT CONFIDENCE OF OCCURRENCE AT ANY SPECIFIC TERMINAL TO JUST A VCTS FOR NOW. EXPECTED DIURNAL NATURE OF STORMS SHOULD ALLOW ACTIVITY TO DIMINISH LATE IN THE EVENING. 12 UTC MOS GUIDANCE LIMITS ANY EARLY MORNING MVFR RESTRICTIONS TO JUST KAVL AND BASED ON PERSISTENCE WILL CONTINUE TO LEAVE OUT ANY MENTION FOR THE TIME BEING. OUTLOOK...LITTLE OVERALL CHANGE THRU SATURDAY...AS SFC RIDGE REMAINS OFFSHORE BRINGING MOISTURE UP OVER OUR REGION. EXPECT MAINLY DIURNAL CONVECTION WITH ASSOC HAZARDS. && .GSP WATCHES/WARNINGS/ADVISORIES... GA...NONE. NC...NONE. SC...NONE. && SYNOPSIS...DEO NEAR TERM...CSH SHORT TERM...HG LONG TERM...HG AVIATION...CSH
Hazardous weather outlook, Jul 8, 1:43 PM EDT, 1 hour 19 minutes before
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Local storm report, Jul 8, 1:10 PM EDT, 1 hour 52 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 |
|---|---|---|---|---|
| Jul 7, 8:00 PM EDT | Severe Thunderstorm Warning | GSP | Henderson, Polk | 60 min |
| Jul 7, 8:12 PM EDT | Areal Flood Advisory | GSP | Henderson | 93 min |
| Jul 8, 12:46 PM EDT | Severe Thunderstorm Warning | GSP | Henderson, Transylvania | 59 min |
| Jul 8, 12:56 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Haywood | 29 min |
| Jul 8, 1:43 PM EDT | Areal Flood Advisory | GSP | Henderson | 92 min |
| Jul 8, 2:30 PM EDT | Severe Thunderstorm Warning | GSP | McDowell | 49 min |
| Jul 8, 3:10 PM EDT | Severe Thunderstorm Warning | GSP | Cleveland, Rutherford | 49 min |
| Jul 8, 4:08 PM EDT | Severe Thunderstorm Warning | GSP | Catawba, Gaston, Lincoln | 67 min |
| Jul 8, 4:35 PM EDT | Severe Thunderstorm Warning | GSP | Union | 55 min |
| Jul 8, 4:38 PM EDT | Severe Thunderstorm Warning | GSP | Catawba, Gaston, Iredell, Lincoln, Mecklenburg | 67 min |
| Jul 8, 4:59 PM EDT | Severe Thunderstorm Warning | GSP | Mecklenburg | 61 min |
| Jul 8, 5:06 PM EDT | Severe Thunderstorm Warning | GSP | Cabarrus, Davie, Rowan | 54 min |
| Jul 8, 5:25 PM EDT | Severe Thunderstorm Warning | GSP | Cabarrus, Mecklenburg, Union | 80 min |
| Jul 8, 5:59 PM EDT | Areal Flood Advisory | GSP | Union | 2 hr |
| Jul 8, 5:59 PM EDT | Severe Thunderstorm Warning | GSP | Cabarrus, Rowan | 25 min |
| Jul 8, 6:13 PM EDT | Flash Flood Warning | GSP | Union | 3 hr |
| Jul 8, 6:27 PM EDT | Areal Flood Advisory | GSP | Cabarrus | 2 hr |
| Jul 8, 3:32 PM EDT | Severe Thunderstorm Warning | GSP | Anderson | 58 min |
| Jul 8, 4:40 PM EDT | Severe Thunderstorm Warning | GSP | Greenville, Laurens, Spartanburg | 51 min |
| Jul 8, 5:12 PM EDT | Severe Thunderstorm Warning | GSP | Spartanburg | 35 min |
| Jul 8, 5:18 PM EDT | Severe Thunderstorm Warning | GSP | York | 45 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2008Severe Thunderstorm Warnings in Georgia, 2008Every severe thunderstorm warning in 2008
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.