Alert archive / North Carolina / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 263, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 8, 2008, 2:30 PM EDT for McDowell County, North Carolina. It was in force for 49 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, 2:30 PM EDT (18:30 UTC)
- Expired
- Jul 8, 2008, 3:19 PM EDT
- In force
- 49 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
County McDowell County, NC
The radar
The Greer radar (KGSP), 90 km from the middle of the area, began a volume at 18:30 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, 6.5 hours before the alert went out and 199 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, 12:29 PM EDT, 2 hours 1 minute earlier.
Area forecast discussion, Jul 8, 12:29 PM EDT, 2 hours 1 minute before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1229 PM EDT TUE JUL 8 2008 .SYNOPSIS... THE BERMUDA HIGH WILL BUILD OVER THE REGION INTO MID WEEK. 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. && .NEAR TERM /THROUGH TONIGHT/... LATEST IN A SERIES OF VORT MAXES CURRENTLY ROUNDING BASE OF S/WV AIDED IN DRIVING SHOWER ACTIVITY ACRS THE NW NC PIEDMONT ATTM. NEXT IMPULSE...POSSIBLY THE REMNANTS OF MIDWEST MCS ACTIVITY... ENCROACHING UPON EASTERN TENN. ALONG AND EAST OF THIS FEATURE... WOULD EXPECT CURRENT TSTMS TO EXPAND IN CVRG TOWARD THE NC MTNS THIS AFTERNOON WITH THE GENERAL FLOW REGIME REMAINING FAVORABLE TO SUPPORT SCATTERED TSTMS WITHIN THE ABOVE NORMAL PWAT VALUES....ELSEWHERE ACRS THE CWFA INTO THIS EVENING. DESPITE MOIST PROFILES ON AREA SNDGS...AREAS OF MODERATE INSTABILITY WILL AID IN THE FORMATION OF ISOLATED SVR STORMS PRODUCING PENNY SIZED HAIL AND 60 MPH WIND GUSTS. && .SHORT TERM /WEDNESDAY THROUGH FRIDAY/... AS OF 245 AM TUESDAY...THE LATEST MODEL RUNS HAVE ENOUGH OF THE INGREDIENTS IN PLACE FOR A CONTINUATION OF MAINLY DIURNAL SHOWERS AND THUNDERSTORMS FOR THE REST OF THE SHORT TERM. THE MAIN CONCERN IS THE TIMING. WEDNESDAY SHOULD BE QUIET FOR THE BETTER PART OF THE MORNING AND EARLY AFTERNOON AS SHORT WAVE RIDGING PUTS A DAMPER ON THINGS...BUT EVENTUALLY DEEP CONVECTION SHOULD DEVELOP BY LATE AFTERNOON. THE NAM CONTINUES TO BE FASTER THAN THE GFS WITH A WEAK BOUNDARY DROPPING DOWN FROM NW LATE WEDNESDAY...WHEREAS THE GFS MOVES THE BOUNDARY THROUGH WED NITE. THINK THE MOST REASONABLE SCENARIO IS FOR CONVECTION TO DEVELOP TO THE NW ON WEDNESDAY CLOSER TO THE BETTER FORCING...AND PROPAGATE DOWN ACROSS THE FORECAST AREA. THIS WOULD MEAN THE NAM WOULD BE RIGHT IN EFFECT...EVEN IF THE REAL BOUNDARY REMAINS TO THE N. ASSUMING THIS WORKS OUT...SOME LINGERING CONVECTIVE ACTIVITY WOULD PERSIST INTO THE LATE NIGHT OVER THE PIEDMONT...BEFORE DYING IN THE PREDAWN HOURS. HAVE RAISED PRECIP CHANCE ABOUT 10 PERCENT ACCORDINGLY. SCATTERED CONVECTION SHOULD FIRE UP AGAIN NEAR THIS BOUNDARY SETTLING ACROSS THE FORECAST AREA ON THURSDAY. TEMPS WERE BUMPED UP A DEGREE OR TWO BASED ON THE GUIDANCE TREND. && .LONG TERM /FRIDAY NIGHT THROUGH MONDAY/... AS OF 330 AM TUESDAY...THE LATEST GFS CONTINUES THE TREND OF PUSHING A SURFACE BOUNDARY TO THE SOUTH OF THE FORECAST AREA THURSDAY NIGHT...SO THAT MODEL ACTUALLY HAS A DRY FORECAST ON FRIDAY. THE ECMWF IS A BIT WEAKER WITH A SURFACE HIGH MOVING PAST TO THE NORTH SO IT IS POSSIBLE THE FRONT WILL REMAIN STALLED CLOSE ENOUGH TO KEEP A CHANCE OF PRECIP ACROSS THE SRN PART ON FRIDAY. THE POP WILL BE LOWERED FRIDAY NIGHT HOWEVER...GIVEN THE LACK OF FORCING. OTHER THAN THAT...THE MAIN ADJUSTMENT WILL BE TO THE TEMPS THROUGH THE WEEKEND GIVEN THE WARMER TREND OF GUIDANCE. && .AVIATION /18Z 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...PM NEAR TERM...CSH/JDL SHORT TERM...PM LONG TERM...PM AVIATION...CSH
Hazardous weather outlook, Jul 8, 1:43 PM EDT, 47 minutes before
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Special weather statement, Jul 8, 12:54 PM EDT, 1 hour 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1254 PM EDT TUE JUL 8 2008 GAZ010-017-081800- HABERSHAM-RABUN- 1254 PM EDT TUE JUL 8 2008 ...A STRONG THUNDERSTORM WILL AFFECT NORTHERN HABERSHAM AND WESTERN RABUN COUNTIES THROUGH 200 PM EDT... AT 1248 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 5 MILES WEST OF LAKE BURTON...OR 14 MILES WEST OF CLAYTON...MOVING EAST AT 21 MPH. THIS STORM WILL BE NEAR... LAKE BURTON BY 100 PM EDT. 5 MILES NORTH OF NACOOHE LAKE BY 110 PM EDT. LAKEMONT BY 125 PM EDT. CLAYTON BY 130 PM EDT. SMALL HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THIS STORM. KRENTZ
Local storm report, Jul 8, 1:10 PM EDT, 1 hour 20 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, 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, 3:02 PM EDT | Severe Thunderstorm Warning | GSP | Oconee | 58 min |
| 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 North Carolina, 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.