A few thunderstorms developed over western North Carolina during the afternoon hours along a weak cold front. One of the storms produced 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.
A few thunderstorms developed over western North Carolina during the afternoon hours along a weak cold front. One of the storms produced 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 Jul 30, 6:52 PM EST, 1 hour 11 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
752 PM EDT SAT JUL 30 2011
.SYNOPSIS...
A WEAK COLD FRONT WILL MOVE INTO THE AREA FROM THE NORTH
SUNDAY...THEN GRADUALLY DISSIPATE ACROSS SOUTH GEORGIA AND THE
CAROLINA COAST ON MONDAY. HIGH PRESSURE WILL BUILD OVER THE REGION
ON TUESDAY AND WEDNESDAY. ANOTHER WEAK COLD FRONT WILL APPROACH THE
SOUTHERN APPALACHIAN REGION LATE NEXT WEEK.
&&
.NEAR TERM /THROUGH SUNDAY/...
AS OF 755 PM SAT...CONVECTION OVER THE WRN PART OF THE UPSTATE...NE
GA AND THE SW NC MTNS HAS DISSIPATED. POPS IN THESE AREAS HAVE BEEN
LOWERED TO 20 PERCENT OR LESS. HEALTHY CHANCE POPS CONTINUE OVER
MOST OF THE REST OF WRN NC AND THE NE PART OF THE UPSTATE. THE
AIRMASS IN THESE AREAS REMAINS RATHER UPSTATE. AS LAYER RH/S
GRADUALLY INCREASE AND AS OUTFLOW BNDRYS CONTINUE TO ENTER THE
REGION FROM THE SOUTH AND WEST...SCT SHRA/TSTMS WILL CONTINUE FOR A
FEW MORE HOURS. LOOKS LIKE QUITE A BIT OF MID AND HIGH LEVEL CLOUD
COVER OVERNIGHT AND SKY COVER HAS BEEN INCREASED TO ACCOUNT FOR
THIS. I/LL KEEP AN EYE ON DIURNAL TRENDS...BUT CLOUD COVER WILL HOLD
UP MIN TEMPS IN SPOTS AS WELL.
AS OF 515 PM SAT...AN OUTFLOW BNDRY HAS MOVED INTO NE GA AND THE SW
NC MTNS. THIS IS HELPING TO CONCENTRATE SHOWER AND THUNDERSTORM
ACTIVITY OVER THE SAVANNAH RIVER VALLEY. THE WEAK SHEAR AND WARM MID
LEVEL TEMPS AREN/T ALLOWING FOR MUCH UPSCALE DEVELOPMENT...BUT THIS
MORE CONCENTRATED AREA OF CONVECTION SHOULD CONTINUE TO DRIFT TO THE
EAST OVER THE NEXT 2 TO 4 HOURS. I/VE ADDED LIKELY POPS ALONG AND
AHEAD OF THE LINE. I/VE ALSO TRIMMED POPS FOR THE NEXT COUPLE HOURS
OVER THE NC FOOTHILLS AND PIEDMONT. STORMS MAY INCREASE IN THESE
AREAS LATER IN THE EVENING AS LLVL CONVERGENCE STRENGTHENS ACROSS
THE FOOTHILLS AS A LEE TROUGH ADVANCES TO THE EAST /SEE THE NAM12
925MB MASS FIELDS/. THEREFORE I HAVE THE POPS INCREASING OVER THE NE
ZONES LATER IN THE EVENING.
ALSO OF NOTE...CHARLOTTE BROKE A RECORD HIGH TODAY HITTING 101
DEGREES.
PREVIOUS DISCUSSION...
UPPER RIDGE WILL CONTINUE TO SLIDE E AND WEAKEN OVER THE REGION
TONIGHT AND SUN...ALLOWING A WEAK SURFACE BOUNDARY AND A SERIES OF
WEAK SHORTWAVES ALOFT TO PUSH THRU THE AREA. WITH TEMPS WARMING INTO
THE MID TO UPPER 90S E OF THE MTNS AND DEW POINTS STAYING IN THE
UPPER 60S TO AROUND 70...HEAT INDEX VALUES NEAR 105 WILL LIKELY BE
REACHED ALONG THE SE TIER OF COUNTIES AND A HEAT ADVSRY IS IN PLACE
FOR THAT AREA. DID EXPAND AREA SLIGHTLY TO COVER ROCK
HILL...CHARLOTTE AND STATESVILLE. SOUNDINGS SHOW AREA NOT AS CAPPED
AS IN PREV DAYS SO SHWRS AND TSTMS WILL CONTINUE TO DEVELOP OVER THE
MTNS AND PUSH SE...WITH SCT CONVECTION DEVELOPING AND SPREADING OVER
THE PIEDMONT THRU THE AFTN AND EARLY EVE. CONVECTION WILL TAPER OFF
WITH COOLING BUT WITH WEAK UPPER FORCING OVERNIGHT...WE HELD ON TO
LOW END CHC POPS THRU THE NIGHT. WITH THE SFC BOUNDARY CONTINUING TO
MOVE THRU THE CWA AND WEAK UPPER LEVEL DIVERGENCE OVER THE AREA
SUN...LIKELY POPS WERE CARRIED FOR SUN AFTN. WITH THE ATMOS FAIRLY
WELL SATURATED THRU THE COLUMN AND PWATS OF OVER 2 INCHES...WENT
WITH MODERATE SHWRS SUN AFTN. NOT SEEING ANY PARTICULAR THREAT AREA
BUT SCT DRAINAGE PROBLEMS COULD OCCUR IN AREAS WHERE CELLS TRAIN.
DUE TO CLOUD COVER AND PRECIP TEMPS SHOULD BE ABOUT 6-8 DEG COOLER
SUN AFTN.
&&
.SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/...
AS OF 155 PM SATURDAY...A GENERAL WEAKNESS IN THE RIDGE WILL
CONTINUE AND THE UPPER LEVEL FLOW REMAINS DIVERGENT MON AS AN ILL
DEFINED SFC TROF SLOWLY SHIFTS SOUTH ACROSS THE CWFA. THERE IS GOOD
AGREEMENT IN THE OP MODELS WITH TIMING AND DEEPNESS OF MOISTURE AND
SUBSIDENCE DEVELOPING DOWN TO H7 THROUGHOUT THE DAY. WEAK E/LY
SFC/H85 FLOW WILL GENERATE SOME MEASURE OF TOPO LIFT ACROSS THE ERN
FACING SLOPES WHILE THE SFC TROF FOCUSES CONVERGENCE PRECIP ACTIVITY
ACROSS THE PIEDMONT REGIONS. HIGH END CHANCE POPS WILL COVER THIS
SCENARIO THROUGH EARLY MORNING MON WITH DECREASING POPS TO
SLIGHT/CHANCE N/S BY THE AFTERNOON. KEPT POPS A LITTLE MORE ACTIVE
ACROSS THE NC SRN/CNT MTNS MON AFTERNOON TO ACCOUNT FOR INSTABILITY
DEVELOPING IN THE WAKE OF THE DEEPER MOISTURE.
THUNDERSTORMS SHOULDN/T BECOME TOO STRONG IN THE AFTERNOON...WITH
SKINNY SBCAPE AND A DECENT CI DECK ROUNDING THE RIDGE....BUT THERE
IS A POSSIBILITY OF DIFFERENTIAL HEATING CLOSE TO THE SFC CONV ZONE
SETTING OFF A FEW TALLER AND STRONGER STORMS. MAX TEMPS WERE KEPT
RIGHT AROUND NORMAL AND FOLLOWED THE MORE CONSISTENT METMOS
GUIDANCE. THE MAV IS ABOUT 10 DEGREES WARMER THAN THE MET AND NO
GOOD REASON COULD BE FOUND IN THE DYNAMIC MODELS TO SUPPORT IT/S
OUTPUT. ALSO...THE 09Z SREF SIDED CLOSELY WITH THE COOLER MET.
MOISTURE LEVELS WILL CONTINUE TO WANE FAIRLY QUICKLY MON NIGHT AS
DEEPER SUBSIDENCE MOVES IN AND THE MID/UPPER HEIGHT GRADIENT
TIGHTENS AND BECOMES DISTINCTLY N/LY. THIS ALONG WITH A 1015 MB HIGH
CENTERING OVER THE REGION...WILL ALLOW DEEP DRYING. SO...NO POPS ARE
WARRANTED AND MAX TEMPS WILL REBOUND TO ABOUT 10 DEGREES ABOVE
NORMAL. GOOD AFTERNOON MIXING WILL LOWER SFC TD/S AND OFFSET ANY
HEAT ADVISORY CONCERNS.
&&
.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
AS OF NOON SATURDAY...THE GLOBAL MODELS REMAIN IN QUITE GOOD
AGREEMENT ON THE OVERALL PATTERN ACROSS THE CONUS THROUGH THE MEDIUM
RANGE. EXPECT THE PATTERN TO REMAIN HIGHLY AMPLIFIED...WITH A MAJOR
SUBTROPICAL HIGH DOMINATING THE CENTRAL PORTION OF THE COUNTRY. THE
PERIOD WILL START OFF RELATIVELY DRY...AS CONVECTION TUE EVENING
INTO WEDNESDAY SHOULD REMAIN ISOLATED AT BEST UNDER THE INFLUENCE OF
AN UNSEASONABLY DRY AIRMASS.
HOWEVER...AS A SIGNIFICANT STORM SYSTEM MOVES ACROSS THE NORTHEAST
CONUS AND THE CANADIAN MARITIMES WEDNESDAY...A FRONTAL BOUNDARY WILL
SAG INTO THE SOUTHEAST FOR THE LATTER PART OF THE WEEK. AT FIRST...
IT DOESNT APPEAR THERE WILL BE A GREAT DEAL OF MOISTURE FOR THIS
FEATURE TO WORK WITH. HOWEVER...THE ECMWF/GFS SUGGEST THAT THE
BERMUDA HIGH WILL MAKE A COMEBACK BY THURSDAY OR SO...ALLOWING
CHANCES FOR DIURNAL CONVECTION TO INCREASE.
MAX TEMPS EARLY IN THE PERIOD WILL REMAIN AS MUCH AS A COUPLE OF
CATEGORIES ABOVE NORMAL...WITH MIN TEMPS AVERAGING AROUND NORMAL IN
THE DRIER AIR. BY THE END OF THE WEEK...MAX TEMPS WILL DECREASE A
BIT AND MINS INCREASE A BIT AS MOISTURE/CONVECTIVE COVERAGE
INCREASES.
&&
.AVIATION /00Z SUNDAY THROUGH THURSDAY/...
AT KCLT AND ELSEWHERE...AN OUTFLOW BNDRY WILL HAVE PUSHED THROUGH
ALL THE UPSTATE TAF SITES BY 00 UTC. THIS SHOULD KEEP CONVECTION OUT
OF THESE AREAS FOR SEVERAL MORE HOURS...AND PROBABLY THE REST OF THE
NIGHT. ALL OF THE NC SITES WILL HAVE TO CONTEND WITH SCT SHRA/TSTMS
THE NEXT SEVERAL HOURS. THE STORMS ARE SCATTERED ENUF THAT ONLY CB/S
HAVE BEEN ADDED TO THE TAF. HOPEFULLY THE CONVECTION WILL END
BETWEEN 2 AND 4 UTC. MVFR FOG AND HAZE IS POSSIBLE LATE
TONIGHT...THOUGH HIGH CLOUDS SHOULD KEEP VSBYS FROM GETTING TOO LOW.
IN FACT...IFR FOG HAS BEEN REMOVED FROM KAVL FOR THIS REASON.
WINDS WILL GRADUALLY TURN OUT OF THE NORTH OVERNIGHT AS A LEE SIDE
TROUGH MOVES THROUGH THE REGION. WINDS WILL BE WEST TO SOUTHWEST FOR
A TIME OVER THE UPSTATE...AND LIGHT OUT OF THE SOUTH AT KCLT PRIOR
TO THE TROF PASSAGE.
OUTLOOK...SFC BOUNDARY WILL PUSH S OF THE AREA SUN NIGHT-MON WITH
DRIER CONDITIONS EXPECTED TUE AND WED.
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...HEAT ADVISORY UNTIL 8 PM EDT THIS EVENING FOR NCZ071-072-082.
SC...HEAT ADVISORY UNTIL 8 PM EDT THIS EVENING FOR SCZ009-011>014-
019.
&&
SYNOPSIS...JDL
NEAR TERM...MCAVOY/RB
SHORT TERM...SBK
LONG TERM...JDL
AVIATION...MCAVOYHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 435 PM EDT SAT JUL 30 2011 GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065- 068>070-501>510-SCZ001>008-010-312045- 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-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-ANDERSON- 435 PM EDT SAT JUL 30 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TONIGHT. ISOLATED TO WIDELY SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS THE REGION LATE THIS AFTERNOON AND THIS EVENING. ALTHOUGH CLOUD TO GROUND LIGHTNING AND LOCALLY HEAVY RAINFALL WILL BE THE MAIN THREATS...ONE OR TWO OF THESE STORMS COULD PRODUCE A BRIEF PERIOD OF DAMAGING STRAIGHT LINE WINDS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE. NCZ071-072-082-SCZ009-011>014-019-312045- MECKLENBURG-CABARRUS-UNION NC-YORK-ABBEVILLE-LAURENS-UNION SC- CHESTER-GREENWOOD- 435 PM EDT SAT JUL 30 2011 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. HEAT ADVISORY. ISOLATED TO WIDELY SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS THE REGION LATE THIS AFTERNOON AND THIS EVENING. ALTHOUGH CLOUD TO GROUND LIGHTNING AND LOCALLY HEAVY RAINFALL WILL BE THE MAIN THREATS...ONE OR TWO OF THESE STORMS COULD PRODUCE A BRIEF PERIOD OF DAMAGING STRAIGHT LINE WINDS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE. LANE
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
520 PM EDT SAT JUL 30 2011
GAZ029-302200-
ELBERT-
520 PM EDT SAT JUL 30 2011
...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN ELBERT COUNTY THROUGH
600 PM EDT...
AT 515 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTHWEST OF ELBERTON...MOVING SOUTHEAST
AT 20 MPH.
* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO
MIDDLETON...FORTSONIA AND ELBERTON.
SMALL HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THIS
STORM.
HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER
LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFORE SEEK
HIGHER GROUND IF THREATENED BY FLOOD WATERS.
LAT...LON 3397 8264 3398 8266 3397 8274 3400 8293
3409 8303 3414 8305 3414 8281 3410 8265
3407 8265 3403 8259 3396 8256
CSHThe Greer radar (KGSP), 74 km away, was scanning. The volume nearest the first event began at 01:03 UTC.
1 thunderstorm wind. Local standard time, as filed.
Several trees were blown down between Sulphur Springs Rd and South Post Rd.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Carolina in 2011Every state in 2011This day in weather historyWarnings in North Carolina, July 2011
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: 339603.