Scattered thunderstorms developed over western North Carolina during the afternoon hours along a weak trough. A couple of the storms produced localized wind damage.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS GSP wrote it up.
Scattered thunderstorms developed over western North Carolina during the afternoon hours along a weak trough. A couple of the storms produced localized wind damage.
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 Sep 1, 12:54 PM EST, 2 hours 36 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 154 PM EDT SAT SEP 1 2012 .SYNOPSIS... THE REMNANT CIRCULATION OF ISAAC WILL MOVE SLOWLY EASTWARD THROUGH THE OHIO VALLEY SUNDAY AND MONDAY...WITH MOISTURE INCREASING FROM THE WEST ACROSS THE WESTERN CAROLINAS AND NORTHEAST GEORGIA. THE MOST ABUNDANT TROPICAL MOISTURE WILL CROSS THE REGION TUESDAY THROUGH WEDNESDAY. A WEAK COLD FRONT WILL ARRIVE FROM THE NORTHWEST ON THURSDAY. && .NEAR TERM /THROUGH SUNDAY/... 1715 UTC UPDATE...SKY COVER AND POPS HAVE GENERALLY BEEN REDUCED IN THE NEXT FEW HOUSE BASED ON SATELLITE AND RADAR TRENDS. POPS WERE INCREASED NEAR MT MITCHELL WHERE CONVECTION WAS ONGOING. WINDS WERE UPDATED WITH A BLEND OF 06Z ADJMAV AND 12Z NAM. AT 1000 AM EST SATURDAY...AN UPPER LEVEL HIGH WAS CENTERED OVER THE CENTRAL SAVANNAH RIVER VALLEY...WHILE AN UPPER LOW ASSOCIATED WITH TROPICAL DEPRESSION ISAAC WAS LOCATED OVER MO. A COLD FRONT WAS ANALYZED AT THE SURFACE OVER NJ AND PA...EXTENDING WEST AS A STATIONARY FRONT JUST SOUTH OF THE GREAT LAKES. SURFACE DEW POINTS OVER 70 DEGREES COVERED MOST OF THE AREA SOUTH OF THE FRONT...EXCEPT FOR THE APPALACHIANS. THE UPPER LOW ASSOCIATED WITH ISAAC IS EXPECTED TO MOVE SLOWLY EAST TODAY...WHILE THE RIDGE OVER GA AND THE CAROLINAS CONTINUES TO MOVE SOUTH. THIS WILL ALLOW GULF MOISTURE MOVING NE TO THE SOUTHERN APPALACHIANS TO TURN WEST OVER THE MOUNTAINS AND INTO THE FOOTHILLS AND PIEDMONT...SUPPORTING HIGHER POPS TODAY. CAPE IS EXPECTED TO BE HIGHER TODAY...ESPECIALLY OVER THE FOOTHILLS AND PIEDMONT. WITH MOISTURE INCREASING...DRY AIR WILL BECOME LIMITED TO THE SUB CLOUD LAYER. THUNDERSTORMS WITH DAMAGING WIND GUSTS WILL BE POSSIBLE. WITH WEAK STEERING FLOW...LOCALLY HEAVY RAINFALL CAN BE EXPECTED. HIGH TEMPERATURES WILL BE SLIGHTLY ABOVE NORMAL. THE MOIST PLUME WILL CONTINUE TO NUDGE EAST ACROSS THE FORECAST AREA TONIGHT. WHILE COVERAGE OF CONVECTION SHOULD GRADUALLY WANE THROUGH THE EVENING...THERE WILL BE THE POTENTIAL FOR LINGERING ISOLATED/ WIDELY SCATTERED SHOWERS THROUGH THE OVERNIGHT...ESP ACROSS THE FAR WESTERN ZONES. TEMPS WILL REMAIN ABOVE NORMAL THROUGH THE PERIOD. && .SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/... AS OF 100 PM EDT SATURDAY...GOOD MODEL AGREEMENT IS HAD IN THE EVOLUTION OF THE REMNANT TC UPPER LOW OVER THE SHORT RANGE. THE CLOSED LOW SHOULD OPEN UP INTO A BROAD WAVE MON...THEN PROCEED EAST OVER THE CWFA AND WEAKEN THROUGH TUE. THERE WILL BE SOME MEASURE OF OMEGA ENHANCEMENT ACCORDING TO H7/H5 Q/VECT CONVG TRAVERSING THE NRN ZONES MON...THEN WEAKER DEEP LAYERED FORCING INTO TUE. MODEL SOUNDINGS STILL INDICATE HIGH PWATS BOTH DAYS AND LITTLE CAPE/SHEAR. THUS...WILL EXPECT MAIN DIURNALLY DRIVEN GENERAL CONVECTION...WITH ISOL/SCT -SHRA OVERNIGHT SUN AND MON. THE BEST COMBINED LIFT WILL BE ACROSS THE NC MTNS AND THEREFORE WILL EXPECT THE GREATEST PRECIP COVERAGE/AMOUNTS IN THE HIGHER ELEVATIONS. WENT A LITTLE CONSERVATIVE WITH QPF AMOUNTS BASED ON A MIX OF THE 09Z SREF MEAN...WHICH ADDED HIGHER AMOUNTS ACROSS THE SW NC MTNS AND NRN NE GA. THE POTENTIAL FOR EXTENDED PERIODS OF HEAVY RAINFALL EXISTS AND PERHAPS AN ISOL HYDRO CONCERN...BUT ITS TOO EARLY TO TELL WHERE AND WHEN ATTM. MAX TEMPS SHOULD BE RIGHT AROUND NORMAL OR A BIT BELOW WITH VERY GOOD CLOUD COVER...WHILE MINS SHOULD REMAIN A COUPLE DEGREES ABOVE NORMAL. && .LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/... AS OF 300 AM EDT SAT...THOUGH THE WEAKENING CIRCULATION OF THE ISAAC REMNANTS WILL PASS N OF THE REGION TUE THROUGH WED...AN ASSOCIATED TRAILING TROUGH AXIS WILL SLOWLY CROSS THE FORECAST AREA TUE THROUGH WED. THERE APPEARS TO BE LIMITED DEEP LAYER FORCING WITH THIS SYSTEM...BUT MOISTURE WILL BE AT ITS DEEPEST DURING THIS TUE TO WED TIMEFRAME. 850 MB FLOW MAY BRIEFLY INCREASE TO AROUND 25 KT ON TUE AFTN...BUT PROFILES APPEAR TOO MOIST FOR MUCH OF A SEVERE TSTM THREAT. HEAVY RAINFALL WILL BE THE GREATER THREAT...WITH PRECIPITABLE WATER VALUES WELL OVER 2 INCHES AND TEMPERATURE PROFILES HIGHLY SUPPORTIVE FOR WARM RAIN PROCESSES. THE MAX TEMPERATURE FORECAST REMAINS ON THE COOL SIDE OF GUIDANCE TUE AND WED...BUT STILL A FEW DEGREES ABOVE NORMAL THROUGHOUT. A WEAK CLIPPER SYSTEM WILL BRUSH THE NRN TIER ON THU...PUSHING A COLD FRONT INTO THE REGION. DRYING FROM THE NW SHOULD FOLLOW ON FRI...BUT THE BOUNDARY COULD GET HUNG UP ACROSS THE AREA WITH CONTINUED LOW LEVEL MOISTURE OVER THE SRN HALF. WILL HOLD ONTO SHOTGUN CHC POPS ON THU...WITH ISOLD TO SCT DIURNAL TSTMS FRI AFTN...MAINLY NEAR THE BLUE RIDGE. PERSISTENCE WILL BE A GOOD FORECAST FOR TEMPERATURES UNTIL THE DRYING TOWARD THE WEEKEND. && .AVIATION /18Z SATURDAY THROUGH THURSDAY/... AT KCLT...CONVECTIVE COVERAGE THIS AFTERNOON IS EXPECTED TO BE GREAT ENOUGH TO WARRANT A TEMPO GROUP FOR THUNDER...BUT CONFIDENCE IS NOT HIGH ENOUGH TO CARRY A RESTRICTION. MODEL GUIDANCE SUPPORTS MVFR FOG AROUND DAYBREAK SUNDAY. CONVECTION IS EXPECTED TO BE MORE WIDESPREAD ON SUNDAY...BUT TIMING WILL BE BEST AFTER THE END OF THIS PACKAGE. GUIDANCE HAS LIGHT WINDS FAVORING THE NORTH TODAY...BACKING TO THE SW TONIGHT AND REMAINING SW ON SUNDAY...BUT OBSERVED WINDS ARE ALREADY FROM THE SE. ELSEWHERE...VCTS WILL BE CARRIED FOR SEVERAL HOURS THIS AFTERNOON AT ALL SITES AS CONVECTIVE COVERAGE MOISTURE INCREASES FROM THE WEST. MODEL GUIDANCE SUPPORTS MVFR FOG OUTSIDE THE MOUNTAINS BY DAWN SUNDAY...AND IFR IN THE MOUNTAINS. ALTHOUGH GREATER CONVECTIVE COVERAGE IS EXPECTED ON SUNDAY...CONFIDENCE IS NOT HIGH THAT IT WILL OCCUR AT ANY TAF SITES BEFORE THE END OF THIS PACKAGE. LIGHT WINDS ARE RATHER VARIABLE THIS AFTERNOON...BUT WILL BACK TO THE SW TONIGHT... REMAINING THERE ON SUNDAY. OUTLOOK...MOISTURE LEVELS WILL REMAIN HIGH THROUGH AT LEAST MID-WEEK...RESULTING IN CONTINUED CHANCES OF MAINLY DIURNAL SHOWERS AND THUNDERSTORMS...AS WELL AS THE POTENTIAL FOR LATE NIGHT/EARLY MORNING FOG AND LOW STRATUS. AN EXPERIMENTAL AVIATION FORECAST CONSISTENCY TABLE SHOWING THE PERCENTAGE OF GUIDANCE MEMBERS AGREEING WITH THE SCHEDULED ISSUANCE CATEGORY IS AVAILABLE AT FOLLOWING LINK (USE LOWER CASE)... WWW.WEATHER.GOV/GSP/AVIATION/TABLES.HTM && .GSP WATCHES/WARNINGS/ADVISORIES... GA...NONE. NC...NONE. SC...NONE. && SYNOPSIS...DEO NEAR TERM...JAT SHORT TERM...SBK LONG TERM...DEO AVIATION...JAT
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 323 PM EDT SAT SEP 1 2012 GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065- 068>072-082-501>510-SCZ001>014-019-021930- RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-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-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD- 323 PM EDT SAT SEP 1 2012 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 THUNDERSTORMS WILL CONTINUE ACROSS THE REGION THIS EVENING. OCCASIONAL CLOUD TO GROUND LIGHTNING AND LOCALLY VERY HEAVY RAINFALL WILL BE THE PRIMARY THREATS. SOME THUNDERSTORMS WILL PRODUCE GUSTY WINDS...AND ISOLATED DAMAGING DOWNBURSTS WILL BE POSSIBLE...ESPECIALLY OVER THE LOWER PIEDMONT AREAS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
323 PM EDT SAT SEP 1 2012
NCZ071-012015-
MECKLENBURG-
323 PM EDT SAT SEP 1 2012
...A STRONG THUNDERSTORM WILL AFFECT CENTRAL MECKLENBURG COUNTY
THROUGH 415 PM EDT...
AT 321 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR CENTER CITY CHARLOTTE. THIS STORM WAS NEARLY
STATIONARY.
THIS STORM WILL IMPACT LOCATIONS NEAR...
SOUTHPARK MALL...
CENTER CITY CHARLOTTE...
I-77 AT I-85...
EASTLAND MALL...
DIME SIZE HAIL...AND WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH
THIS STORM.
HEAVY RAINS MAY FLOOD AREAS WITH POOR DRAINAGE...SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER
LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE RAPIDLY. SEEK HIGHER
GROUND IF THREATENED BY FLOOD WATERS.
FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...TRY TO
GET INDOORS OR INTO A HARD TOPPED VEHICLE. OTHERWISE...STAY AWAY FROM
OPEN AREAS AND ISOLATED HIGH OBJECTS SUCH AS TREES. WHEN INDOORS...
STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING WIRED ELECTRONIC
DEVICES. TRY TO UNPLUG UNNECESSARY APPLIANCES BEFORE THE STORM
APPROACHES.
LAT...LON 3513 8064 3512 8094 3530 8098 3537 8072
3535 8069 3533 8069
RWHSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
324 PM EDT SAT SEP 1 2012
NCZ035-012015-
ALEXANDER-
324 PM EDT SAT SEP 1 2012
...A STRONG THUNDERSTORM WILL AFFECT ALEXANDER COUNTY THROUGH 415 PM
EDT...
AT 321 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES NORTHWEST OF MILLERSVILLE...OR 3 MILES
SOUTHWEST OF TAYLORSVILLE...MOVING NORTH AT 10 MPH.
THIS STORM WILL IMPACT LOCATIONS NEAR...
TAYLORSVILLE...
DIME SIZE HAIL...AND WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH
THIS STORM.
HEAVY RAINS MAY FLOOD AREAS WITH POOR DRAINAGE...SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER
LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE RAPIDLY. SEEK HIGHER
GROUND IF THREATENED BY FLOOD WATERS.
FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...TRY TO
GET INDOORS OR INTO A HARD TOPPED VEHICLE. OTHERWISE...STAY AWAY FROM
OPEN AREAS AND ISOLATED HIGH OBJECTS SUCH AS TREES. WHEN INDOORS...
STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING WIRED ELECTRONIC
DEVICES. TRY TO UNPLUG UNNECESSARY APPLIANCES BEFORE THE STORM
APPROACHES.
LAT...LON 3580 8110 3580 8114 3583 8115 3582 8121
3581 8122 3581 8125 3581 8132 3599 8133
3603 8127 3604 8121 3604 8106
RWHThe Greer radar (KGSP), 113 km away, was scanning. The volume nearest the first event began at 20:30 UTC.
4 thunderstorm wind, 1 heavy rain. Local standard time, as filed.
Multiple trees were blown down in the Bakers Mountain Park area.
Multiple trees were blown down in the Iron Station area.
A large tree fell on and crushed a garage on highway 27 near the Lincoln County border.
A horse barn was reportedly flooded and a car was partially submerged in water at the 200 block of E 9th Street on the north side of Uptown Charlotte.
Multiple trees were blown down on Heartland Dr.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Carolina in 2012Every state in 2012This day in weather historyWarnings in North Carolina, September 2012
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: 413936, 413937, 413938, 413939, 413940.