The northern end of a large MCS moved across northeast Georgia during the late afternoon and early evening hours. The atmosphere was very unstable over the region and the storms knocked down numerous trees over the area.
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.
The northern end of a large MCS moved across northeast Georgia during the late afternoon and early evening hours. The atmosphere was very unstable over the region and the storms knocked down numerous trees over the area.
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 Jun 18, 4:48 PM EST, 0 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 548 PM EDT SAT JUN 18 2011 .SYNOPSIS... A WEAK STATIONARY FRONT WILL LINGER IN OUR AREA INTO THE WEEKEND. THE FRONT WILL MOVE NORTH AS A WARM FRONT EARLY NEXT WEEK AS HIGH PRESSURE MOVES INTO THE AREA. && .NEAR TERM /THROUGH SUNDAY/... RAPID FIRE UPDATES EARLY THIS EVENING TO DEAL WITH CHANGES IN WATCH CONFIGURATIONS. IN LIGHT OF UPSTREAM CONVECTION MOVING INTO NE GEORGIA...THOUGHT IT BEST TO LOCALLY EXTEND SVR TSTM WATCH 500 UNTIL 00Z FOR THE SAV RVR VALLEY...WHILE THE REMAINDER OF WATCH 500 HAS BEEN CANCELLED. OTHER WATCH OVER THE LAKELANDS WILL CONTINUE. MAJOR ALTERATIONS TO TEMP TRENDS HAVE BEEN MADE TO ACCT FOR 10-15 DEG DROPOFF BEHIND OLD COLD POOL. MORE CHANGES COMING. REMAINDER OF PREVIOUS DISCUSSION... UPSTREAM MCS OVER ERN TN HAS NOT STRENGTHENED MUCH THE PAST COUPLE HOURS...THOUGH CORE HEIGHTS ALONG THE LINE ARE FINALLY STARTING TO REACH OBJECTIVE SEVERE CRITERIA. KMRX IS SHOWING A WELL ESTABLISHED AND STRONG COLD POOL/REAR INFLOW JET BEHIND THE LINE...AND IT SHOULD STRENGTHEN RAPIDLY AS IT MOVES INTO THE MORE UNSTABLE AIR OVER THE GREAT VALLEY. AS THE STRONG COLD POOL MOVES INTO THE MOUNTAINS...WHICH ARE QUITE MIXED AT THIS POINT...POCKETS OF DAMAGING WINDS ARE EXPECTED TO DEVELOP. AS THE LINE MOVES EAST OF THE MTNS...INTO AN ENVIRONMENT OF HIGHER DAPE...THE MCS SHOULD BEGIN TO SURGE EASTWARD. THE 12 UTC NAM NOW HAS BULK SHEAR VALUES OF AROUND 40 KTS OVER THE ENTIRE FA THROUGH THE AFTN HOURS...WHICH ALSO BODES WELL FOR THE EVOLUTION OF THE LINE AS IT PROGRESSES INTO AN INCREASINGLY UNSTABLE AIRMASS. THE 15 UTC RUN OF THE WORKSTATION WRF-ARW SHOWS AN EVEN MORE HIGHLY EVOLVED BOW ECHO MOVING ACROSS THE FA DURING THE EARLY TO MID AFTN HOURS THAN IT DID BEFORE...AND STILL LINES UP FAIRLY WELL WITH THE MCS OVER ERN TN. THEREFORE...THIS SHOULD SOON TRANSITION INTO A SIGNIFICANT DAMAGING WIND EVENT FOR THE FA. OVERNIGHT AND INTO SUNDAY MORNING...THE NAM DEVELOPS A 30-40KT LLVL JET OVER THE FA AS HEIGHTS RISE TO OUR WEST. THIS POOLS BL DEWPOINTS OVER 70S DEGREES ACROSS THE CENTRAL PART OF THE FA. THIS SHOULD SUPPORT NOCTURNAL ELEVATED CONVECTION OVERNIGHT...THOUGH I/M UNSURE HOW STRONG ON HOW WIDESPREAD IT WILL BE. ADDITIONAL CONVECTIVELY INDUCED MCV/S WILL CROSS THE FA ON SUNDAY. THE NAM IMPLIES A GOOD THREAT OF ADDITIONAL SEVERE STORMS WHILE THE GFS IS FARTHER NORTH. CONSIDERING THE ONGOING CONVECTION AND HOW SOUTH IT SHOULD MOVE OVERNIGHT...THE TREAT WILL PROBABLY BE ORIENTED FARTHER SOUTH THAN THE GFS IMPLIES ON SUNDAY...ONCE AGAIN PUTTING US UNDER THE GUN. && .SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/... AS OF 1245 PM SATURDAY...UPPER HEIGHTS OVER THE CWFA WILL START THEIR RISE ON MONDAY AS GULF COAST RIDGING POKES NORTH AND EAST. WITH SOLID LOWER TO MID 90S FCST ACRS JUST ABOUT ALL THE MAJOR VALLEYS AND INTO THE PIEDMONT...THE ATMOSPHERE WILL LIKELY BECOME MODERATELY UNSTABLE. THERE DOES NOT LOOK TO BE MUCH TO INHIBIT AFTERNOON AND EVENING TSTM DEVELOPMENT...IN FACT...ENOUGH MID LVL NW FLOW EXISTS TO GIVE RISE TO A FEW SVR STORMS. SHORT RANGE MODELS REMAIN CONSISTENT IN DEPICTING BLDG UPPER RIDGE ATOP THE CWFA ON TUESDAY. THE RESULTANT VERY WEAK FLOW AND WEAKLY FORCED ENVIRONMENT SHOULD LIMIT DIURNAL DEEP CONVECTION...ESPECIALLY AWAY FROM THE HIGHER TERRAIN...WHERE THE FCST SNDGS LOOK TO REMAIN CAPPED. OTHERWISE...THE HEAT WAVE WILL CONTINUE AND THE GOING SWATH OF MID TO UPPER 90S MAX TEMPS LOOK GOOD. && .LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/... AS OF 1215 PM SATURDAY...THE TREND TOWARD LESS HOT CONDITIONS COMMENCES ON WEDNESDAY AS UPPER RIDGE AXIS ATOP THE SE CONUS TRANSLATES EASTWARD. AS HEIGHTS START TO FALL AND RETURN FLOW MOISTURE BEGINS AN UPWARD CREEP...WOULD EXPECT TSTM CHANCES TO CLIMB BACK TO NEAR CLIMO PROBABILITIES. CENTRAL CONUS TROUGH LOOKS TO CONTINUE TO IMPINGE UPON THE EASTERN SEABOARD ON THURSDAY...AND GIVEN THE PROBABILITY OF INCREASED LARGER SCALE FORCING...POP WILL BE INCREASED TO SOLID CHANCE AND EXPANDED ACRS THE WHOLE CWFA. MEDIUM RANGE MODELS ARE STILL ADVERTISING L/WV TROUGH AXIS TO SET UP ATOP THE EASTERN CONUS ON FRIDAY BEFORE LIFTING SOME NEXT SATURDAY. AN ATTENDANT FRONTAL ZONE SHOULD SAG SOUTH INTO THE REGION AS WELL BUT THE SOUTHWARD PENETRATION AND ANY INFLUX OF DRIER AIR BY THE END OF THE PERIOD IS QUESTIONABLE AND PROBABLY DOUBTFUL. GIVEN THIS...WILL MAINTAIN TOKEN CHANCE POP FOR DAYS 6-7 ALONG WITH MAX TEMPERATURES NEAR EARLY SUMMER NORMALS. && .AVIATION /22Z SATURDAY THROUGH THURSDAY/... KCLT...BIG NEWS OF THE DAY IS THE MCS THAT IS NOW PUSHING INTO THE MOUNTAINS. WITH THE UNSTABLE AIRMASS EAST OF THE MTNS...IT SHOULD RAPIDLY MOVE EASTWARD OVER THE NEXT FEW HOURS. THE MOST LIKELY TIME FOR STORM PASSAGE IS AROUND 21 UTC. I/M GIVING A 3 HOUR WINDOW OWING TO DEVELOPMENT AHEAD OF THE LINE AND A LINGERING PERIOD OF THUNDER AND HEAVY RAIN BEHIND IT. WINDS WILL GUST OUT OF THE WEST AS THE LINE CROSSES...AND WILL BE WSW AHEAD OF IT...AND ERRATIC AND VARIABLE OVERNIGHT BEHIND. A LITTLE FOG IS POSSIBLE LATE TONIGHT DEPENDING HOW MUCH RAIN FALLS...BUT WITH HIGH CLOUDS LIKELY LASTING THROUGH THE NIGHT...NOT EXPECTING MORE. ALSO...SCT SHRA/TSTMS MAY DEVELOP AGAIN LATE TONIGHT AND SUN MORNING...THOUGH I HAVE NOT INCLUDED THAT IN THE TAF YET. ELSEWHERE...THINKING FOR THE OTHER TAF SITES IS BASICALLY THE SAME AS FOR CLT WITH A WIDESPREAD LINE OF STRONG TO SEVERE STORMS EXPECTED TO CROSS THE REGION FROM THE WEST THIS AFTN. BEHIND THE LINE...AREAS OF FOG WILL BE POSSIBLE LATE TONIGHT. HOWEVER...HIGH CLOUDS SHOULD INHIBIT WIDESPREAD FOG. IN FACT...SHRA AND TSTMS MAY DEVELOP AGAIN OVER THE REGION LATE TONIGHT. OUTLOOK...THERE WILL BE A GOOD CHANCE OF THUNDERSTORMS AGAIN ON SUNDAY. DRIER AND HOT WEATHER IS EXPECTED MONDAY AND TUESDAY...THOUGH ISOLATED TSTMS ARE POSSIBLE IN THE MTNS. A COLD FRONT WILL BRING A BETTER CHANCE OF TSTMS...AND RESTRICTIONS...BY WED OR THU. && .GSP WATCHES/WARNINGS/ADVISORIES... GA...NONE. NC...NONE. SC...NONE. && SYNOPSIS...PAT NEAR TERM...MCAVOY/PM SHORT TERM...CSH LONG TERM...CSH AVIATION...MCAVOY
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1107 AM EDT SAT JUN 18 2011 GAZ010-017-018-026-NCZ033-048>053-058-059-062>065-501>510-SCZ001>007- 191515- RABUN-HABERSHAM-STEPHENS-FRANKLIN-AVERY-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- GREATER GREENVILLE-SPARTANBURG- 1107 AM EDT SAT JUN 18 2011 ...SEVERE THUNDERSTORM WATCH 500 IN EFFECT UNTIL 6 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL MOVE INTO THE NORTH CAROLINA MOUNTAINS DURING THE EARLY AFTERNOON HOURS...THEN RAPIDLY CROSS THE REST OF THE WESTERN CAROLINAS AND NORTHEAST GEORGIA DURING THE AFTERNOON AND EARLY EVENING HOURS. AREAS OF DAMAGING STRAIGHT LINE WINDS ARE EXPECTED TO ACCOMPANY THE LINE AS IT CROSSES THE REGION...ALONG WITH SOME LARGE HAIL. THIS A DANGEROUS DEVELOPING WEATHER SITUATION. PEOPLE WITH OUTDOOR PLANS TODAY SHOULD CLOSELY MONITOR THE WEATHER AND PREPARE TO MOVE INDOORS WHEN THE STORMS APPROACH. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE. GAZ028-029-NCZ035>037-056-057-068>072-082-SCZ008>014-019-191515- HART-ELBERT-ALEXANDER-IREDELL-DAVIE-CATAWBA-ROWAN-CLEVELAND-LINCOLN- GASTON-MECKLENBURG-CABARRUS-UNION NC-CHEROKEE-YORK-ANDERSON- ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD- 1107 AM EDT SAT JUN 18 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL MOVE INTO THE NORTH CAROLINA MOUNTAINS DURING THE EARLY AFTERNOON HOURS...THEN RAPIDLY CROSS THE REST OF THE WESTERN CAROLINAS AND NORTHEAST GEORGIA DURING THE AFTERNOON AND EARLY EVENING HOURS. AREAS OF DAMAGING STRAIGHT LINE WINDS ARE EXPECTED TO ACCOMPANY THE LINE AS IT CROSSES THE REGION...ALONG WITH SOME LARGE HAIL. THIS A DANGEROUS DEVELOPING WEATHER SITUATION. PEOPLE WITH OUTDOOR PLANS TODAY SHOULD CLOSELY MONITOR THE WEATHER AND PREPARE TO MOVE INDOORS WHEN THE STORMS APPROACH. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE. MCAVOY
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
526 PM EDT SAT JUN 18 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0438 PM TSTM WND DMG 2 NW CLINTON 34.50N 81.89W
06/18/2011 LAURENS SC LAW ENFORCEMENT
TREE IN ROADWAY ALONG HW-308
&&
CSHPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
530 PM EDT SAT JUN 18 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0421 PM TSTM WND DMG 4 SSW ENOREE 34.60N 81.99W
06/18/2011 LAURENS SC LAW ENFORCEMENT
TREE IN ROADWAY NEAR ORA RD AND US 221
&&
CSHPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
535 PM EDT SAT JUN 18 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0438 PM TSTM WND DMG 3 SSW CHARLOTTE 35.16N 80.86W
06/18/2011 MECKLENBURG NC 911 CALL CENTER
POWERLINES DOWN ALONG FARMBROOK DR
&&
CSHPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
538 PM EDT SAT JUN 18 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0339 PM TSTM WND DMG 6 SSW SHELBY 35.21N 81.58W
06/18/2011 CLEVELAND NC AMATEUR RADIO
SPOTTER REPORTED A TREE DOWN ON POWER LINES AND LARGE
LIMBS DOWN NEAR SOUTH POST RD AND HIGHWAY 18.
&&
LANEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
541 PM EDT SAT JUN 18 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0315 PM TSTM WND DMG EAST FLAT ROCK 35.28N 82.42W
06/18/2011 HENDERSON NC FIRE DEPT/RESCUE
TREE DOWN ON POWERLINES ON NORTH LAKE SUMMIT ROAD. 911
CENTER REPORTED TREES DOWN ALL AREAS OF COUNTY.
&&
TBENTHALLSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
543 PM EDT SAT JUN 18 2011
SCZ005-010-182215-
ANDERSON-GREATER PICKENS-
543 PM EDT SAT JUN 18 2011
...A STRONG THUNDERSTORM WILL AFFECT NORTHERN ANDERSON AND SOUTHERN
PICKENS COUNTIES THROUGH 615 PM EDT...
AT 537 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR CENTRAL...OR 5 MILES NORTHEAST OF CLEMSON...
MOVING EAST AT 45 MPH.
THIS STORM WILL BE NEAR...
PIEDMONT...
SMALL HAIL...AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.
LAT...LON 3464 8283 3470 8287 3473 8287 3481 8277
3475 8246 3472 8246 3471 8245 3471 8246
3468 8245 3467 8247 3465 8245 3444 8246
MCAVOYThe Greer radar (KGSP), 129 km away, was scanning. The volume nearest the first event began at 21:49 UTC.
4 thunderstorm wind. Local standard time, as filed.
Numerous trees and power lines were blown down across the county.
Multiple trees and power lines were blown down along highway 17 in the Toccoa area.
Numerous trees and power poles were uprooted and snapped off across the county, with the worst damage occurring in the eastern part of the county from Franklin Springs to Royston. At least one tree fell on a home.
Numerous trees were blown down across the county.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Georgia in 2011Every state in 2011This day in weather historyWarnings in Georgia, June 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: 327364, 332867, 329372, 329374.