A few thunderstorms developed along a dissipating cold front over the southwest mountains of North Carolina. One of the storms became pulse severe and produced an area of damaging winds.
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The episode as NWS GSP wrote it up.
A few thunderstorms developed along a dissipating cold front over the southwest mountains of North Carolina. One of the storms became pulse severe and produced an area of damaging winds.
The local office's own words before the first event, 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 the first event at Aug 13, 1:36 PM EST, 3 hours 20 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 236 PM EDT FRI AUG 13 2010 .SYNOPSIS... A WEAK BACKDOOR COLD FRONT WILL LINGER OVER THE AREA THROUGH THE WEEKEND. DEEP TROPICAL MOISTURE WILL PERSIST OVER THE REGION THROUGH EARLY NEXT WEEK. ANOTHER WEAK COLD FRONT WILL THEN APPROACH FROM THE NORTHWEST TOWARDS THE MIDDLE OF NEXT WEEK. && .NEAR TERM /THROUGH SATURDAY/... UPPER RIDGE TO REMAIN OVER THE REGION THRU THE NEAR TERM. WEAK SFC BOUNDARY HAS MOVED THRU MOST OF THE AREA AND LIES NEAR THE SE EDGE OF THE CWA. ALTHO UPPER FORCING IS LACKING...MOIST E TO SE UPSLOPE FLOW AND GOOD HEATING IS HELPING TSTM DEVELOPMENT OVER MTNS AND NEAR FRONT WHICH IS WHERE BEST COVERAGE WILL THRU THE EVE WITH SLIGHT CHC I-77 CORRIDOR AND E. FCST SNDGS STILL SHOW SOME MID-LVL DRY AIR THRU THE AFTN AND DECENT DELTA THETA-E VALUES WHICH GIVES RISE TO AN ISOLATED DAMAGING WIND THREAT WITH STORMS INTO THIS EVE. EXPECT CHC POPS TO CONT OVERNIGHT...MAINLY MTNS...ESCARPMENT AND W CWA WITH SLIGHT CHC E. LOWS WILL BE ABOVE AVG. WHILE UPPER FORCING REMAINS MINIMAL...UPSLOPE FLOW INCREASES SAT WITH PWAT INCRSNG TO 2 IN. TEMPS WILL BE MUCH COOLER BUT CONTINUED UPSLOPE FLOW OF DEEP MOISTURE SHOULD YIELD LIKELY POPS ALONG THE W MTNS...ESCARPMENT AND W PIEDMONT TAPERING TO CHC E. EMBEDDED TSTMS WITH HEAVY RAIN COULD CAUSE LOCALIZED HYDRO PROBLEMS BUT THREAT REMAINS TOO LOW TO CONSIDER A WATCH ATTM. && .SHORT TERM /SATURDAY NIGHT THROUGH MONDAY NIGHT/... AS OF 200 PM FRIDAY...THE MAIN FORECAST CHALLENGE CONTINUES TO BE POPS AND QPF...AS JUICY AIR MASS REMAINS IN PLACE...WITH PERSISTENT UPSLOPE FLOW...WEAK STEERING FLOW...AND SUBTLE UPPER LEVEL FORCING. HAVE GONE WITH A MODEL BLEND FOR THE POPS...AND CONTINUED TO STAY CLOSE TO HPC QPF. HEAVY RAIN THREAT STILL POSSIBLE...BUT CONFIDENCE HAS NOT INCREASED BASED ON LATEST GUIDANCE. WILL HOLD OFF ON ANY HEADLINES AT THIS POINT. FOR SATURDAY NIGHT THRU MONDAY NIGHT...UPPER TROF DIGS ACRS THE GREAT LAKES...AS SOUTHERN CONUS RIDGE FLATTENS. MODELS AGREE ON THE REMNANTS OF TD 5 TAKING AN ANTICYCLONIC LOOP WITHIN THE RIDGE...STARTING INVOF SE AL SATURDAY EVENING...AND TRACKING THRU EXTREME SW GA...BEFORE ENTERING THE GULF INVOF PENSOCOLA BY MONDAY MORNING. MEANWHILE...A 1022 MB SFC HIGH PRES SYSTEM PERSISTS OFF THE NEW ENGLAND COAST...SUPPORTING AN ELY/SELY FLOW THRU THE PERIOD. MODELS IN DECENT AGREEMENT ON PWATS REMAINING ELEVATED IN THE 2-2.5 INCH RANGE. SO ABOVE NORMAL CLOUD COVER AND POPS IN STORE. DIURNAL TEMP RANGE WILL BE HELD IN CHECK DUE TO THE CLOUDS...WITH MILD OVERNIGHT LOWS AND HIGHS GENERALLY IN THE 80S. QPF TOTALS STILL LOOK TO BE IN THE 1 TO 2 INCH RANGE FOR A CWA AVERAGE...WITH LOCALLY HIGHER AMOUNTS (ESPECIALLY ALONG BLUE RIDGE ESCARPMENT). && .LONG TERM /TUESDAY THROUGH FRIDAY/... AS OF 215 PM FRIDAY...UNCERTAINTY INCREASES IN THE MEDIUM RANGE...AS NOAM PAT CHANGES WITH MODELS AND ENSEMBLES SHOWING DISAGREEMENT. A COLD FRONT APPROAHCES THE CWA ON MONDAY...BUT GETS HUNG UP IN THE MTNS...AS UPPER TROF STOPS ITS PROGRESSION. BROAD CYCLONIC UPPER FLOW WILL BE OVER THE AREA...WHILE DEEP MOISTURE REMAINS OVER THE AREA. A SECOND FRONT PUSHES IN FROM THE NORTH TOWARD THE END OF THE WEEK...BUT MODELS GENERALLY AGREE THAT IT STALLS BEFORE PUSHING THRU THE CWA. SO ABOVE CLIMO POPS WITH TEMPS NEAR NORMAL OR SLIGHTLY ABOVE NORMAL. && .AVIATION /19Z FRIDAY THROUGH WEDNESDAY/... AT KCLT...BESIDES SLIGHT CHC TSTMS LATE AFTN-EVE...MAIN CONCERN WILL BE CROSSWINDS. WINDS SHOULD NOT BE MORE THAN 10 KT BUT WILL BE CLOSE TO DIRECTION 090 THRU SAT. USING GUIDANCE BLEND KEPT THEM JUST NE AT 080 THRU THE PD. MVFR CIGS BECOME LIKELY AFTER 09Z...CONTINUING THRU THE MRNG WHILE SLOWLY LIFTING. CHANCE POPS INCRS BY STA AFTN SO KEPT VCSH. ELSEWHERE...CHC TSTMS MAIN CONCERN THIS AFTN...MAINLY MTNS SO INCLUDED VCSH AND CB AT KAVL. WITH LOWER CHC TSTMS ELSEWHERE LEFT CB OUT...EXCEPT KAND WHICH IS NEAR SFC BOUNDARY...BUT WENT WITH VCSH AFTER 20Z. OUTLOOK...UNSETTLED WEATHER WILL BE THE RULE INTO EARLY NEXT WEEK WITH OCNL RESTRICTIONS DUE TO MRNG FOG/LOW CLOUDS AND MAINLY AFTN-EVE CONVECTION. && .GSP WATCHES/WARNINGS/ADVISORIES... GA...HEAT ADVISORY UNTIL 6 PM EDT THIS EVENING FOR GAZ026-028-029. NC...NONE. SC...HEAT ADVISORY UNTIL 6 PM EDT THIS EVENING FOR SCZ011-019. && SYNOPSIS...ARK NEAR TERM...RB SHORT TERM...ARK LONG TERM...ARK AVIATION...RB
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 606 AM EDT FRI AUG 13 2010 GAZ010-017-018-NCZ033-035>037-048>053-056>059-062>065-068>072-082- 501>510-SCZ001>010-012>014-141015- RABUN-HABERSHAM-STEPHENS-AVERY-ALEXANDER-IREDELL-DAVIE-MADISON- YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-ROWAN-GRAHAM- NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON- CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC- CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE- MCDOWELL MOUNTAINS-EASTERN MCDOWELL-RUTHERFORD MOUNTAINS- GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-OCONEE MOUNTAINS- PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE- GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK- ANDERSON-LAURENS-UNION SC-CHESTER- 606 AM EDT FRI AUG 13 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. A WARM AND MOIST AIRMASS WILL SETTLE OVER THE REGION THIS WEEKEND. NUMEROUS SHOWERS AND THUNDERSTORMS ARE FORECAST TO DEVELOP EACH AFTERNOON AND EVENING WITH A FEW AREAS POSSIBLY EXPERIENCING EXCESSIVE RAINFALL. THIS WILL INCREASE THE POTENTIAL FOR FLASH FLOODING OF SMALL CREEKS AND STREAMS AND URBAN AREAS. .SPOTTER INFORMATION STATEMENT... NONE. GAZ026-028-029-SCZ011-019-141015- FRANKLIN-HART-ELBERT-ABBEVILLE-GREENWOOD- 606 AM EDT FRI AUG 13 2010 ...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 6 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. HEAT ADVISORY. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. A WARM AND MOIST AIRMASS WILL SETTLE OVER THE REGION THIS WEEKEND. NUMEROUS SHOWERS AND THUNDERSTORMS ARE FORECAST TO DEVELOP EACH AFTERNOON AND EVENING WITH A FEW AREAS POSSIBLY EXPERIENCING EXCESSIVE RAINFALL. THIS WILL INCREASE THE POTENTIAL FOR FLASH FLOODING OF SMALL CREEKS AND STREAMS AND URBAN AREAS. .SPOTTER INFORMATION STATEMENT... NONE. JPT
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 458 PM EDT FRI AUG 13 2010 SCZ010-132130- ANDERSON- 458 PM EDT FRI AUG 13 2010 ...A STRONG THUNDERSTORM WILL AFFECT CENTRAL ANDERSON COUNTY THROUGH 530 PM EDT... AT 457 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 5 MILES EAST OF SANDY SPRINGS...OR 6 MILES NORTH OF ANDERSON...MOVING SOUTH AT 5 MPH. * OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO SANDY SPRINGS AND ANDERSON. WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THIS STORM. LAT...LON 3449 8255 3454 8281 3467 8270 3464 8261 LANE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 500 PM EDT FRI AUG 13 2010 SCZ012-132130- LAURENS- 500 PM EDT FRI AUG 13 2010 ...A STRONG THUNDERSTORM WILL AFFECT CENTRAL LAURENS COUNTY THROUGH 530 PM EDT... AT 457 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 4 MILES EAST OF LAURENS...MOVING SOUTH AT 10 MPH. * OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO LAURENS AND CLINTON. WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THIS STORM. LAT...LON 3438 8184 3443 8212 3458 8197 3457 8186 LANE
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
508 PM EDT FRI AUG 13 2010
SCZ019-132145-
GREENWOOD-
508 PM EDT FRI AUG 13 2010
...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN GREENWOOD COUNTY
THROUGH 545 PM EDT...
AT 505 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTH OF WARE SHOALS...OR 12 MILES
NORTHWEST OF GREENWOOD...MOVING SOUTHWEST AT 10 MPH.
* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO WARE
SHOALS...HODGES AND COKESBURY.
WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.
LAT...LON 3423 8225 3428 8230 3434 8233 3440 8224
3435 8218 3432 8215
LANESPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
522 PM EDT FRI AUG 13 2010
GAZ017-132145-
HABERSHAM-
522 PM EDT FRI AUG 13 2010
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN HABERSHAM COUNTY
THROUGH 545 PM EDT...
AT 518 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTHWEST OF DEMOREST...OR 6 MILES
SOUTHWEST OF CLARKESVILLE...MOVING SOUTHWEST AT 5 MPH.
THIS STORM WILL MAINLY AFFECT RURAL AREAS WEST OF A DEMOREST TO
BALDWIN LINE.
WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.
LAT...LON 3454 8364 3456 8364 3459 8364 3460 8359
3453 8351 3443 8362 3444 8363 3450 8368
3451 8368
LANESPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 540 PM EDT FRI AUG 13 2010 NCZ062-132230- MACON- 540 PM EDT FRI AUG 13 2010 ...A STRONG THUNDERSTORM WILL AFFECT CENTRAL MACON COUNTY THROUGH 630 PM EDT... AT 535 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR FRANKLIN...MOVING SOUTHWEST AT 10 MPH. WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THIS STORM. PEOPLE IN CENTRAL MACON COUNTY...INCLUDING THE FOLLOWING LOCATIONS... FRANKLIN AND OTTO... SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN. LAT...LON 3501 8336 3512 8359 3525 8338 3520 8327 LANE
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
543 PM EDT FRI AUG 13 2010
NCZ053-132215-
BUNCOMBE-
543 PM EDT FRI AUG 13 2010
...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN BUNCOMBE COUNTY THROUGH
615 PM EDT...
AT 539 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR I-26 AT I-40...OR 5 MILES SOUTHWEST OF
DOWNTOWN ASHEVILLE...MOVING SOUTH AT 15 MPH.
* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO I-26 AT
I-40...BILTMORE FOREST...BENT CREEK AND AVERY CREEK.
WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.
LAT...LON 3555 8254 3543 8254 3545 8266 3546 8266
3545 8268 3545 8270 3556 8262
LANEThe Knoxville radar (KMRX), 111 km away, was scanning. The volume nearest the first event began at 21:55 UTC.
1 thunderstorm wind. Local standard time, as filed.
Numerous trees and power lines blown down west of the city of Franklin, from Old Murphy Rd, to Industrial Park Rd, to near the Wayah Rd, highway 64 intersection.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Carolina in 2010Every state in 2010This day in weather historyWarnings in North Carolina, August 2010
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 257274.