Thunderstorms drifted southward, out of North Carolina, during the afternoon hours. One of the storms produced some wind damage over the northeast Georgia mountains.
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.
Thunderstorms drifted southward, out of North Carolina, during the afternoon hours. One of the storms produced some wind damage over the northeast Georgia mountains.
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 May 27, 1:31 PM EST, 2 hours 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 231 PM EDT THU MAY 27 2010 .SYNOPSIS... A WEAK COLD FRONT WILL SLOWLY APPROACH FROM THE NORTH ON FRIDAY AND MOVE SOUTHWARD THROUGH THE AREA ON SATURDAY. A STRONGER COLD FRONT WILL APPROACH THE REGION FROM THE NORTHWEST EARLY NEXT WEEK WITH WEAK HIGH PRESSURE MOVING IN BEHIND THE FRONT. && .NEAR TERM /THROUGH FRIDAY/... STILL EXPECTING SCATTTERED MOUNTAIN CONVECTION TO FIRE BY 20Z THIS AFTERNOON...AS LAPS CAPES POOLING IN PLACES IN EXCESS OF 2000 J. HRRR CONTINUES TO CONFINE CONVECTION TO MOUNTAINS/FOOTHILLS...AND WITH WEAK STEERING FLOW THIS SEEMS REASONABLE. CAPES OUTSIDE OF MOUNTAINS ALSO ARE HIGH...BUT THERE IS NO APPARENT TRIGGERING MECHANISM AS THOSE AREAS ARE ACTUALLY IN WEAK NVA. EXPECT MOUNTAIN CONVECTION TO WANE RAPIDLY AROUND SUNSE. HOWEVER...THE NAM AND HRRR SHOW CONVECTION POSSIBLY SLIPPING INTO THE NORTHERN NC FOOTHILLS/PIEDMONT FROM THE N EARLY THIS EVENING AS WEAK BOUNDARY SLIPS SOUTHWARD...SO WILL CARRY SOME LOW POPS THERE TIL ABOUT 04Z OR SO THERE. OTHERWISE...TONIGHT WILL BE PARTLY CLOUDY/MOSTLY CLEAR AND QUITE WARM WITH LOWS IN THE MID 60S...EXCEPT 50S MOUNTAINS. ON FRI...WITH A WEAK BOUNDARY DRAPED ACROSS THE AREA...UPSLOPE FLOW DEVELOPING ALONG WITH WEAK DIVERGENCE ALOFT EXPECT NUMEROUS SHOWERS/THUDNERSTORMS TO DEVELOP OVER THE MOUNTAINS/FOOTHILLS BY MIDDAY...GRADUALLY PROPOGATING INTO THE PIEDMONT DURING THE MID TO LATE AFTERNOON HOURS. SPC HAS ENTIRE AREA IN A SLIGHT RISK...BUT WIND FIELDS ARE RATHER WEAK. HOWEVER...A COUPLE WET MICROBURSTS ARE NOT OUT OF THE QUESTION WITH EVOLVING COLD POOLS. WITH WEAK STEERING FLOW AND PRECIP WATER INCREASING TO NEAR 1.5 INCHES IN THE COLUMN...SOME LOCALLY HEAVY RAIN IS ALSO LIKELY...BUT COVERAGE WILL NOT BE SUFFICIENT TO WARRANT A FLASH FLOOD WATCH. USED A MOS BLEND FOR MIN TEMPS TONIGHT. FOR MAX TEMPS ON FRI...FAVORED THE WARMER MAV NUMBERS OUTSIDE THE MOUNTAINS WHERE SOME INSOLATION AND DELAYED MID TO LATE AFTERNOON CONVECTION WILL ALLOW TEMPS TO RISE TO NEAR 90. MESOSCALE MODELS SUCH AS THE HRRR AND LOCAL WRF INTIATE CONVECTION OVER THE MOUNTAINS IN THE 18Z-19Z TIMEFRAME THIS AFTERNOON AND CONTINUE TO CONFINE COVERAGE TO ESSENTIALLY THE MOUNTAINS/FOOTHILLS DURING THE LATE AFTERNOON/EVENING. WITH WEAK STEERING FLOW TODAY...THIS SEEMS REASONABLE. WILL ADJUST THE POP FIELD FOR TIMING AND BUMP VALUES UPWARD IN THE MOUNTAINS AND GENERALLY LOWER A BIT IN THE PIEDMONT AS MODEL SOUNDINGS SHOW SOME INHIBITION AND LOWER CAPES THERE. WILL QUICKLY LOWER POPS AFTER SUNSET. AFTER 03Z EXPECT DRY CONDITIONS FOR THE REMAINDER OF THE NIGHT WITH MOSTLY CLEAR TO PARTLY CLOUDY CONDITIONS. A HOT AFTERNOON IS IN STORE AND CURRENT FORECAST LOOKS GOOD WITH LOW 90S OUTSIDE OF THE MOUNTAINS AND MID 80S MOUNTAIN VALLEYS. A WARM NIGHT IS ALSO IN STORE WITH LOWS IN THE MID TO UPPER 60S OUTSIDE OF THE MOUNTAINS AND 50S TO AROUND 60 MOUNTAINS. && .SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/... AS OF 130 PM THU...AN UPPER RIDGE WILL SHIFT SLOWLY SEWD FROM THE NRN PLAINS TO THE MID ATLANTIC REGION...WHILE A WEAK COMPACT UPPER LOW WANDERS INVOF THE LOWER MS VALLEY THIS WEEKEND. HEIGHTS WILL RISE ALOFT OVER THE FA...AND OVERALL FLOW WILL REMAIN WEAK. AT THE SFC...A BACKDOOR COLD FRONT WILL STALL INVOF THE I-77 CORRIDOR FROM WRN VA THRU THE NC PIEDMONT...WITH SOUTHERN EDGE OF BNDRY PUSHING INTO ERN SC. TO OUR WEST...AN INVERTED TROF/WK WAVE ASSOCIATED WITH AFOREMENTIONED UPPER LOW WILL AFFECT TN/AL/GA AND ACRS FL. BOTH OF THESE SFC FEATURES WILL BE FOCUSES FOR CONVECTION...AS BL MOISTURE POOLS ALONG THE BNDRYS (THIS IS IN ADDITION TO THE USUAL MTN-VLY CIRCULATION). WITH SUCH WEAK FLOW ALOFT AND RELATIVELY WEAK MID LVL LAPSE RATES...MODELS ARE HAVING DIFFICULTY AGREEING ON LOCATION AND COVERAGE OF CONVECTION ACRS THE SOUTHEAST STATES. BOTH THE NAM AND GFS HAVE BULLS EYES IN QPF IN VARIOUS SPOTS...WITH THE NAM SHOWING RESPONSE IN THE UPPER LEVELS (UPPER DIVERGENCE AND VORT MAX). SO I HAVE TAKEN A MODEL BLEND ON POPS AND TRIED TO KEEP IT MORE OF A BROAD-BRUSH. THE BEST CHC WILL BE FRIDAY EVE...THEN TAPER TO MORE OF A DIURNALLY-DRIVEN CHC POP SATURDAY AND SUNDAY. THE FOCUS OF CONVECTION LOOKS TO SHIFT WEST AS UPPER LOW RETROGRADES AND HEIGHTS RISE ON SUNDAY...WITH ONLY SLGT CHC POP FOR THE ERN 2/3RDS OF THE FA. (BOTH THE NAM AND GFS AGREE ON DRIER AIR WORKING INTO THE FA FROM THE EAST.) TEMPS WILL BE AROUND NORMAL SATURDAY UNDER MOSTLY CLOUDY SKIES AND SCATTERED TO NUMEROUS SHWRS/TSTMS...THEN ABOUT A CATEGORY WARMER ON SUNDAY WITH LOWER CONVECTIVE COVERAGE AND MORE INSOLATION. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... AS OF 130 PM THURSDAY...THE MEDIUM RANGE FCST BEGINS AT 00Z ON MON WITH WEAK H5 RIDGING OVER THE EASTERN CONUS AND A CLOSED UPPER LOW MOVING THRU SOUTHERN CANADA. AT THE SFC...WEAK HIGH PRESSURE LINGERS OVER THE FCST AREA EARLY IN THE PERIOD AND THEN GIVES WAY TO A HEALTHY LOOKING COLD FRONT THAT IS EXPECTED TO MOVE ACROSS THE CWA ON TUES. LINGERING MOIST SOUTHERLY FLOW WILL PREVAIL OVER THE REGION UNTIL THE FROPA...AFTER WHICH TIME WEAK SFC RIDGING WILL FILL IN ON WED. WITH THE MOIST SOUTHERLY FLOW AND HIGH SFC BASED INSTABILITY ON MON...TUES...AND WED AFTERNOON/EVENING THE CHANCES FOR SCATTERED SH AND TS ARE GOOD...ESPECIALLY ON TUES WITH THE APPROACH OF THE FRONT. TEMPS WERE LARGELY UNCHANGED FROM THE PREVIOUS FCST AND ARE EXPECTED TO BE WELL ABOVE NORMAL WITH MAX VALUES IN THE MID TO UPPER 80S AND MIN VALUES IN THE MID 60S OVER THE LOWER ELEVATIONS. && .AVIATION /19Z THURSDAY THROUGH TUESDAY/... AT KCLT...A VFR FORECAST WITH JUST SOME SCT CU THIS AFTERNOON AND WITH MAINLY CI OVERNIGHT AND FRI MORNING. CONVECTION IS EXPECTED TO STAY OVER HIGH TERRAIN TO NW. LIGHT NE WINDS EXPECTED TO VEER TO THE SE FRI MORNING. ELSEWHERE...VFR FORECAST...EXCEPT FOR SOME LOW MVFR FOG AT KAVL LATE TONIGHT. EXPECT SCATTERED MOUNTAIN CONVECTION TO DEVELOP BY 20Z THIS AFTERNOON SO WILL CARRY A CB CLOUD GROUP AT KAVL 21Z-00Z. EXPECT MOUNTAIN CONVECTION TO BEGIN BY MIDDAY FRI...SO WILL CARRY A CB CLOUD GROUP AT KAVL AT 17Z. OUTLOOK...A COLD FRONT WILL MOVE INTO THE AREA LATE FRIDAY AFTERNOON AND NIGHT WHICH WILL TRIGGER SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WITH CEILING/VSBY RESTRICTIONS. THE FRONT WILL REMAIN OVER THE AREA ON SAT AND WITH A MOIST UPGLIDE FLOW EXPECT SCATTERED TO NUMEROUS SHOWERS/THUNDERSTORMS AGAIN SAT AFTERNOON/EVENING. MVFR/IFR RESTRICTIONS IN EITHER SHOWERS/STRATUS/FOG WILL CONTINUE INTO SUNDAY MORNING...WITH IMPROVING CONDITIONS SUNDAY AFTERNOON. && .GSP WATCHES/WARNINGS/ADVISORIES... GA...NONE. NC...NONE. SC...NONE. && SYNOPSIS...JPT NEAR TERM...LG SHORT TERM...ARK LONG TERM...JPT AVIATION...LG
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 355 PM EDT THU MAY 27 2010 GAZ010-017-018-NCZ033-035-048>053-058-059-062>065-501>510-SCZ001>005- 282000- RABUN-HABERSHAM-STEPHENS-AVERY-ALEXANDER-MADISON-YANCEY-MITCHELL- SWAIN-HAYWOOD-BUNCOMBE-GRAHAM-NORTHERN JACKSON-MACON- SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-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- 355 PM EDT THU MAY 27 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. ISOLATED TO SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS THE MOUNTAINS OF THE CAROLINAS AND NORTHEAST GEORGIA THROUGH THIS EVENING. A FEW THUNDERSTORMS COULD PRODUCE DAMAGING WIND GUSTS AND HAIL AS LARGE AS QUARTERS. BRIEF...HEAVY RAIN IS POSSIBLE AS WELL. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. THUNDERSTORM COVERAGE WILL INCREASE ACROSS THE REGION ON FRIDAY AS A COLD FRONT APPROACHES FROM THE NORTH. SOME THUNDERSTORMS MAY BECOME SEVERE...PRODUCING LARGE HAIL AND DAMAGING WIND GUSTS FRIDAY AFTERNOON AND FRIDAY NIGHT. SOME OF THE THUNDERSTORMS COULD ALSO PRODUCE VERY HEAVY RAINFALL...RESULTING IN LOCALIZED FLOODING. .SPOTTER INFORMATION STATEMENT... NONE. GAZ026-028-029-NCZ036-037-056-057-068>072-082-SCZ006>014-019-282000- FRANKLIN-HART-ELBERT-IREDELL-DAVIE-CATAWBA-ROWAN-CLEVELAND-LINCOLN- GASTON-MECKLENBURG-CABARRUS-UNION NC-GREATER GREENVILLE-SPARTANBURG- CHEROKEE-YORK-ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD- 355 PM EDT THU MAY 27 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. THUNDERSTORM COVERAGE WILL INCREASE ACROSS THE REGION ON FRIDAY AS A COLD FRONT APPROACHES FROM THE NORTH. SOME THUNDERSTORMS MAY BECOME SEVERE...PRODUCING LARGE HAIL AND DAMAGING WIND GUSTS FRIDAY AFTERNOON AND FRIDAY NIGHT. SOME OF THE THUNDERSTORMS COULD ALSO PRODUCE VERY HEAVY RAINFALL...RESULTING IN LOCALIZED FLOODING. .SPOTTER INFORMATION STATEMENT... NONE.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
329 PM EDT THU MAY 27 2010
GAZ010-NCZ062-272015-
MACON-RABUN-
329 PM EDT THU MAY 27 2010
...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN RABUN AND SOUTHERN
MACON COUNTIES THROUGH 415 PM EDT...
AT 325 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTHWEST OF OTTO...OR 11 MILES SOUTH OF
FRANKLIN. THIS STORM WAS NEARLY STATIONARY.
PEOPLE IN NORTHWESTERN RABUN AND SOUTHERN MACON COUNTIES...INCLUDING
THE FOLLOWING LOCATIONS...
DILLARD AND OTTO...
SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE
WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE
WEATHER THREATEN.
SMALL HAIL...AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.
LAT...LON 3494 8359 3495 8356 3499 8356 3500 8352
3504 8356 3504 8355 3513 8332 3500 8324
3484 8349 3491 8360
MOOREThe Greer radar (KGSP), 99 km away, was scanning. The volume nearest the first event began at 20:45 UTC.
1 thunderstorm wind. Local standard time, as filed.
Trees and power lines were blown down on highway 76 east of Clayton.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Georgia in 2010Every state in 2010This day in weather historyWarnings in Georgia, May 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: 233994.