Supercell thunderstorms affected northeast Georgia during the nighttime hours.
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.
Supercell thunderstorms affected northeast Georgia during the nighttime hours.
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 17, 9:06 PM EST, 19 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1006 PM EDT WED JUN 17 2009 .SYNOPSIS... A STATIONARY FRONT WILL REMAIN ACROSS OUR AREA THROUGH TONIGHT...BEFORE LIFTING NORTH AS A WARM FRONT THURSDAY. HIGH PRESSURE BUILDS OVER THE AREA FROM THE SOUTH FRIDAY...THEN A COLD FRONT WILL MOVE ACROSS OUR AREA SATURDAY. WEAK HIGH PRESSURE WILL BUILD OVER THE REGION EARLY NEXT WEEK. && .NEAR TERM /THROUGH THURSDAY/... A POTENT UPPER VORT LOBE IS MOVING SOUTHEASTWARD ACROSS THE SW PORTION OF THE FORECAST AREA THIS EVENING. MTN CONVECTION JUST AHEAD OF THIS FEATURE WILL SOON REACH THE NC/GA/SC BORDER...SO WW 439 IS BEING ALLOWED TO EXPIRE ON SCHEDULE. A STRONG TO SEVERE THUNDERSTORM THREAT WILL EXIST IN THE SW MTNS UNTIL AROUND 1030 PM...BUT THIS WILL BE HANDLED WITH LOCAL STATEMENTS OR WARNINGS IF NEEDED. LAPS SFC CAPE VALUES OF 3000 OR BETTER ARE STILL INDICATED IN THE WW 441 AREA ACROSS NE GA AND THE WRN UPSTATE. THIS WATCH WILL NEED TO RUN AT LEAST UNTIL 11 PM...AND POSSIBLY LONGER UNTIL THE UPPER VORT LOBE PASSES AROUND MIDNIGHT. ONLY MINOR ADJUSTMENTS TO TEMPS AND POP TRENDS HAVE BEEN MADE OTHERWISE FOR THE OVERNIGHT HOURS. ON THURSDAY...A SURFACE BOUNDARY SHOULD PUSH EAST ACROSS THE FORECAST AREA EARLY IN THE DAY. THIS SHOULD TAKE CARE OF ANY LINGERING CLOUDINESS ACROSS THE FOOTHILLS AND PIEDMONT. NW FLOW AND PLENTY OF SUN WILL ALSO ALLOW TEMPS TO REBOUND BY AFTERNOON WITH HIGHS MUCH WARMER THAN LAST SEVERAL DAYS. HAVE STAYED ON THE LOWER END OF THE GUIDANCE FOR NOW...FIGURING THAT SOME OF THE HEAT WILL GO TOWARD EVAPORATION. THE MODEL GUIDANCE SUGGESTS AN OTHERWISE SHOWER-FREE DAY...BUT I AM NOT CONVINCED. ANOTHER SHORT WAVE WILL MOVE IN FROM THE NW IN THE AFTERNOON AND DIFFERENTIAL HEATING ACROSS THE HIGHER TERRAIN IS NOT TO BE UNDERESTIMATED. STILL FEEL LIKE WE SHOULD BE ABLE TO GENERATE SCATTERED THUNDERSTORMS OVER THE MTNS IN THE AFTERNOON...WITH SOME OF THEM MOVING OUT OVER THE FOOTHILLS AND PIEDMONT LATE IN THE DAY. && .SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY/... AS OF 230 PM EDT WEDNESDAY...UPPER RIDGE AXIS SHIFTS EWD OVER THE CWFA ON FRIDAY. GUIDANCE IS STILL BULLISH ON THE HEAT (ESPECIALLY THE MAV)...WITH RECORD OR NEAR RECORD HIGHS ON FRIDAY AFTN (SEE CLIMATE SECTION BELOW). HOWEVER...THE 12Z MET HAS COME IN A TAD COOLER. IN ANY CASE...MODEL THICKNESSES SUPPORT MAX TEMPS IN THE UPPER 90S (UPPER 80S TO LOWER 90S MTNS). WITH SUCH A QUICK UPSWING IN TEMPS FROM THURSDAY/S FCST HIGHS...AND THE WET SOIL MOISTURES...I STILL THINK THE GOING FCST (WHICH IS A CATEGORY OR TWO COOLER THAN THE LATEST MAV) LOOKS REASONABLE. ALSO...I BLENDED THE MOS FOR DEWPTS...AS SOME DOWNSLOPE DRYING AND MIXING OF DRYING AIR ARND 800 MB SHOULD DROP DEWPTS INTO THE LOWER TO MID 60S. THE COMBINATION STILL MANAGES TO PRODUCE HEAT INDEX VALUES AROUND 100 F. THE GUIDANCE SHOWS NO QPF OVER THE AREA FRIDAY AFTN...AND I HAVE REMOVED MENTION OF CONVECTION (EVEN THOUGH CAPES WILL BE HIGH). THERE WILL BE AN NVA REGIME IN PLACE...AND A STRONG ENUF CAP TO PRECLUDE CONVECTION. SATURDAY IS A DIFFERENT STORY. A SHORTWAVE AND ASSOCIATED LOW PRES WAVE WILL DIVE SEWD INTO THE GREAT LAKES REGION...FLATTENING THE SOUTHEAST CONUS RIDGE. THE FCST SNDGS SHOW INCREASING SHEAR WITH A BNDRY SAGGING SOUTH ACRS THE CENTRAL APPALACHIANS AND MID ATLANTIC STATES. THE NAM ACTUALLY HAS A CLUSTER OF ACTIVITY DIVE SOUTH THRU OUR NC ZONES SATURDAY AFTN. THE GFS KEEPS ALL MCS ACTIVITY TO THE NORTH. CONFIDENCE IS LOW DUE TO THE DISAGREEMENT...BUT I SIDED MORE WITH THE NAM SINCE IT HAS BEEN GENERALLY BETTER WITH MCS ACTIVITY IN THIS PATTERN. THIS WILL AFFECT CLOUD COVER AND MAX TEMPS (AGAIN I WEIGHTED MORE NAM FOR THESE GRIDS). TEMPS SHOULD BE A CATEGORY OR TWO COOLER THAN FRIDAY (EXCEPT IN THE UPPER SAVANNAH VALLEY AND SOUTHERN UPSTATE SC. && .LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... AS OF 245 PM EDT WEDNESDAY...THE PATTERN EVOLUTION IN THE EXTENDED PERIOD IS JUST PLAIN STRANGE (ESPECIALLY FOR LATE JUNE)...AS ALL THE GUIDANCE IS IN DECENT AGREEMENT ON A DEVELOPING UPPER HIGH/UPPER LOW COUPLET OVER THE CONUS. THE HIGH IS CENTERED OVER THE SOUTHERN PLAINS STATES...AND THE LOW INVOF THE MID ATLANTIC COAST. THERE IS DISAGREEMENT ON HOW AMPLIFIED THIS PATTERN WILL GET. THE 00Z ECMWF WAS VERY DEEP WITH THE LOW...RETROGRADING IT INTO CENTRAL APPALACHIANS. THE 12Z GFS SHOWS A CLOSED LOW AS WELL...BUT KEEPS IT OFFSHORE AND SHALLOWER. OVERALL...WITH WOULD KEEP OUR AREA IN A CYCLONIC UPPER FLOW REGIME WITH NLY/NWLY FLOW THRU THE COLUMN. HPC GENERALLY HAS GENERALLY CLIMO POPS/TEMPS FOR OUR AREA. GIVEN THE UNCERTAINTY...I INITIALIZED WITH THE 12Z HPC GRIDS AND DID NOT MAKE MAJOR CHANGES. && .AVIATION /02Z THURSDAY THROUGH MONDAY/... CONVECTION WILL AFFECT MAINLY LOCATIONS FROM KAND TO KGSP OVER THE NEXT FEW HOURS. A MORE SOLID RAIN/SHOWER SHIELD WILL EXTEND FROM KAVL TO KHKY...WHERE ASSOCIATED CIGS AND VSBY WILL LIKELY BE LOWER. IFR CONDITIONS APPEAR MOST LIKELY OVERNIGHT FROM KAVL TO KHKY TO KCLT...WITH GENERALLY MVFR CONDITIONS DEVELOPING AT THE UPSTATE TAF SITES. CONDITIONS WILL SLOWLY IMPROVE TO VFR THROUGH THE MORNING HOURS THURSDAY...WITH SCATTERED CB CLOUDS ANTICIPATED DURING THE AFTN. FLOW WILL BE GENERALLY WESTERLY...WITH SW WINDS AT KCLT NEAR A LEE TROUGH. OUTLOOK...DRIER HIGH PRESSURE BUILDS INTO THE REGION THU NIGHT THROUGH FRIDAY. A COLD FRONT WILL BRING A CHANCE OF TSTMS SATURDAY. && .CLIMATE... RECORD HIGHS FOR FRIDAY JUNE 19TH: ASHEVILLE (KAVL): 92 SET IN 1933 GREENVILLE-SPARTANBURG AREA (KGSP): 98 SET IN 1944 CHARLOTTE METRO AREA (KCLT): 102 SET IN 1944 && .GSP WATCHES/WARNINGS/ADVISORIES... GA...NONE. NC...NONE. SC...NONE. && SYNOPSIS...ARK NEAR TERM...HG/PM SHORT TERM...ARK LONG TERM...ARK AVIATION...HG/PM CLIMATE...ARK
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 933 PM EDT WED JUN 17 2009 GAZ010-017-018-026-028-029-SCZ001>006-010>012-019-190145- RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-OCONEE MOUNTAINS- PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE- GREATER PICKENS-GREATER GREENVILLE-ANDERSON-ABBEVILLE-LAURENS- GREENWOOD- 933 PM EDT WED JUN 17 2009 ...SEVERE THUNDERSTORM WATCH 441 IN EFFECT UNTIL 11 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA 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. SEVERE THUNDERSTORM WATCH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED ON THURSDAY. ANY THUNDERSTORMS THAT DEVELOP WILL HAVE THE POTENTIAL TO BECOME SEVERE...PRODUCING LARGE HAIL AND DAMAGING WIND. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE. NCZ033-035>037-049-050-056-057-068>072-082-501>510-SCZ007>009-013- 014-190145- AVERY-ALEXANDER-IREDELL-DAVIE-YANCEY-MITCHELL-CATAWBA-ROWAN- 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-SPARTANBURG-CHEROKEE- YORK-UNION SC-CHESTER- 933 PM EDT WED JUN 17 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED ON THURSDAY. ANY THUNDERSTORMS THAT DEVELOP WILL HAVE THE POTENTIAL TO BECOME SEVERE...PRODUCING LARGE HAIL AND DAMAGING WIND. .SPOTTER INFORMATION STATEMENT... NONE. NCZ048-051>053-058-059-062>065-190145- MADISON-SWAIN-HAYWOOD-BUNCOMBE-GRAHAM-NORTHERN JACKSON-MACON- SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON- 933 PM EDT WED JUN 17 2009 ...SEVERE THUNDERSTORM WATCH 439 IN EFFECT UNTIL 10 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH 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. SEVERE THUNDERSTORM WATCH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED ON THURSDAY. ANY THUNDERSTORMS THAT DEVELOP WILL HAVE THE POTENTIAL TO BECOME SEVERE...PRODUCING LARGE HAIL AND DAMAGING WIND. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 824 PM EDT WED JUN 17 2009 NCZ051-180100- SWAIN- 824 PM EDT WED JUN 17 2009 ...A STRONG THUNDERSTORMS WILL AFFECT SWAIN COUNTY AND THE SMOKIES THROUGH 900 PM EDT... AT 822 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS 10 MILES SOUTH OF GATLINBURG...MOVING SOUTHEAST AT 25 MPH. * OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO FONTANA LAKE...SMOKEMONT...NEWFOUND GAP AND CHEROKEE. 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. INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. CSH
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 903 PM EDT WED JUN 17 2009 SCZ001-004-180130- GREATER OCONEE-OCONEE MOUNTAINS- 903 PM EDT WED JUN 17 2009 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN OCONEE COUNTY THROUGH 930 PM EDT... AT 902 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 4 MILES SOUTHEAST OF WALHALLA...MOVING SOUTHEAST AT 15 MPH. * OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO WALHALLA... TOWNVILLE AND SENECA. SMALL HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THIS STORM. INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
907 PM EDT WED JUN 17 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0904 PM HAIL 1 E WALHALLA 34.77N 83.04W
06/17/2009 E1.00 INCH OCONEE SC TRAINED SPOTTER
SPOTTER REPORTS HAIL RANGING FROM PEA TO QUARTER SIZE AT
FOWLER ROAD NEAR HIGHWAY 11.
&&
HGSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 911 PM EDT WED JUN 17 2009 NCZ059-063-180200- NORTHERN JACKSON-SOUTHERN JACKSON- 911 PM EDT WED JUN 17 2009 ...STRONG THUNDERSTORMS WILL AFFECT JACKSON COUNTY THROUGH 1000 PM EDT... AT 911 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR CULLOWHEE...OR 5 MILES SOUTHEAST OF SYLVA... MOVING SOUTHEAST AT 30 MPH. * OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO LAKE THORPE...WOLF MOUNTAIN...WEBSTER...TUCKASEGEE...GAY...CULLOWHEE... CASHIERS AND BALSAM. 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. INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 947 PM EDT WED JUN 17 2009 NCZ064-180245- TRANSYLVANIA- 947 PM EDT WED JUN 17 2009 ...A STRONG THUNDERSTORM WILL AFFECT TRANSYLVANIA COUNTY THROUGH 1045 PM EDT... AT 946 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 7 MILES NORTH OF LAKE TOXAWAY...OR 10 MILES WEST OF BREVARD...MOVING SOUTHEAST AT 25 MPH. * OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO SAPPHIRE... ROSMAN...LAKE TOXAWAY...CEDAR MOUNTAIN AND BALSAM GROVE. SMALL HAIL...AND WIND GUSTS UP 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. INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1009 PM EDT WED JUN 17 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0924 PM HAIL SENECA 34.69N 82.96W
06/17/2009 E0.75 INCH OCONEE SC BROADCAST MEDIA
PENNY HAIL REPORTED IN SENECA.
&&
JPTThe Greer radar (KGSP), 111 km away, was scanning. The volume nearest the first event began at 02:23 UTC.
5 thunderstorm wind, 2 hail. Local standard time, as filed.
Trees blown down on Hayes Rd, highway 320, and highway 106.
Several trees were blown down.
Two trees were blown down.
Numerous trees and power lines were blown down across the county.
A couple trees were blown down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Georgia in 2009Every state in 2009This day in weather historyWarnings in Georgia, June 2009
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: 184577, 184579, 184580, 184583, 184584, 184585, 184586.