An upper level high over Florida began to weaken on the 12th, and a weak surface front over Tennessee began to shift south during the day. Once again, several showers and thunderstorms developed, and one produced flash flooding in a portion of White County, where flash flooding had occurred on the 11th.
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 FFC wrote it up.
An upper level high over Florida began to weaken on the 12th, and a weak surface front over Tennessee began to shift south during the day. Once again, several showers and thunderstorms developed, and one produced flash flooding in a portion of White County, where flash flooding had occurred on the 11th. Another thunderstorm briefly reached severe levels with damaging winds in Coweta County.
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 Atlanta, GA wrote its last area forecast discussion before the first event at Aug 12, 10:14 AM EST, 46 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE PEACHTREE CITY GA 1114 AM EDT MON AUG 12 2013 .UPDATE... VERY LITTLE CHANGE TO THE FORECAST THIS MORNING. TEMPS SEEM TO BE ON TRACK FOR THE MOST PART. DEWPOINTS A LITTLE HIGHER THAN FORECAST SO MADE MINOR ADJUSTMENTS THERE. ALSO REDUCED POPS ESPECIALLY FOR LATE THIS MORNING AND EARLY AFTERNOON...BUT SOME HIRES GUIDANCE STILL INDICATES CONVECTION /SHOWERS/ STARTING AROUND 17Z. WILL MONITOR TRENDS OVER THE NEXT COUPLE OF HOURS. TDP && .PREV DISCUSSION... /ISSUED 744 AM EDT MON AUG 12 2013/ PREV DISCUSSION... /ISSUED 406 AM EDT MON AUG 12 2013/ SHORT TERM /TODAY THROUGH TUESDAY/... OVERALL SYNOPTIC PATTERN PERSISTS THROUGH THE SHORT TERM. ZONAL FLOW REMAINS ACROSS THE OHIO AND TENNESSEE VALLEYS...AND AS UPPER LEVEL HIGH OVER NORTHERN FLORIDA WEAKENS...SURFACE FRONT THAT HAS BEEN SITUATED OVER TENNESSEE THE LAST SEVERAL DAYS WILL FINALLY BEGIN TO MAKE A SLOW PROGRESSION SOUTHWARD. AS A RESULT...PRECIP CHANCES WILL BE ON THE RISE THROUGH TUESDAY. FOR TODAY...MODELS STILL CONSISTENT WITH ADVERTISING THE GREATEST RAIN CHANCES ACROSS FAR NORTH GEORGIA AND TENNESSEE. SEVERAL OF THE SHORT TERM HIRES MODELS INDICATING LATE START TO CONVECTION THAT CARRIES OVER INTO THE OVERNIGHT PERIOD. FOR NOW...HAVE GONE WITH LIKELY POPS NORTH AND WEST OF THE ATL METRO AREA...WITH GOOD CHANCE POPS SPREADING SOUTHWARD THROUGH THE COLUMBUS AND MACON AREAS. GREATEST POP CHANCES PEAK LATE AFTERNOON...AND DIMINISH SOMEWHAT INTO THE OVERNIGHT PERIOD. GIVEN THE HIRES SOLUTIONS...OVERNIGHT POPS MAY BE A LITTLE UNDERDONE...AND THE DAY SHIFT WILL NEED TO RE-EVALUATE. AS FRONT PUSHES SOUTHWARD INTO TUESDAY...POP CHANCES REMAIN IN THE GOOD CHANCE TO LIKELY CATEGORIES. WITH AMPLE MOISTURE PERSISTING ACROSS THE AREA /PWS OF 1.7-1.9/...HEAVY RAIN REMAINS A CONCERN...ESPECIALLY WHERE CONVECTION TRAINS OVER THE SAME AREA. SHORT TERM RAINFALL TOTALS RANGE FROM NEAR 1 INCH NORTH...TO NEAR 0.5 INCHES IN THE METRO AREA...AND 0.25 INCHES ACROSS THE SOUTHERN CWA. IN AREAS WITH TRAINING STORMS...EXPECT LOCALLY HIGHER RAINFALL AMOUNTS...AND LOCALIZED FLOODING MAY BE AN ISSUE. FOR TEMPERATURES HAVE GENERALLY GONE WITH A BLEND OF THE MODEL GUIDANCE. HIGHS LOOK TO BE SLIGHTLY COOLER BY TUESDAY...WITH TEMPERATURES ONLY IN THE MID TO UPPER 80S ACROSS A LARGE PORTION OF THE AREA...AND LOW 90S IN THE SOUTHEASTERN THIRD OF THE CWA. 31 LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/... GFS AND ECMWF MODELS ARE IN GENERAL AGREEMENT THROUGH THE EXTENDED FORECAST PERIOD. A COLD FRONT FROM THE MID ATLANTIC STATES THROUGH THE TN VALLEY SHOULD GRADUALLY MOVE SOUTH INTO GA WEDNESDAY THROUGH THURSDAY. THE VERY MOIST TROPICAL AIRMASS OVER GA...PWS AROUND 2 INCHES...WILL COMBINE WITH A SERIES OF UPPER LEVEL DISTURBANCES MOVING OVER AND PARALLEL TO THE FRONTAL BOUNDARY TO PRODUCE SCATTERED TO NUMEROUS THUNDERSTORMS. A BROAD UPPER LEVEL TROUGH OVER THE GREAT LAKES REGION IS EXPECTED TO DEEPEN OVER THE MS RIVER VALLEY THURSDAY THROUGH SUNDAY. AS THIS OCCURS THE SURFACE FRONT SHOULD REMAIN NEARLY STATIONARY OVER SOUTH GA. THE CLOUDY AND WET PATTERN SHOULD CONTINUE WITH SHOWERS AND THUNDERSTORMS LIKELY OVER THE STATE THURSDAY THROUGH SUNDAY. SIGNIFICANT QPF AMOUNTS UP TO 3 INCHES CAN BE EXPECTED OVER CENTRAL GA DURING THE END OF THE WEEK WITH AROUND 1 INCH OVER NORTH GA. NEAR SEASONAL TEMPERATURES ON WEDNESDAY WILL LOWER 5 TO 10 DEGREES BELOW NORMAL DURING THE DAY THURSDAY THROUGH SUNDAY DUE TO CLOUDS AND RAIN. 16 AVIATION... 12Z UPDATE... VFR CONDITIONS EXPECTED THROUGH THE DAY TODAY. DIURNAL CONVECTION EXPECTED AGAIN THIS AFTERNOON AND INTO THE EVENING HOURS. AT TAF SITES WHERE RAIN OCCURS TODAY...POTENTIAL FOR IFR CIGS AFTER 09Z TUESDAY. WINDS WILL GENERALLY BE WESTERLY...GENERALLY 5-8KT THROUGH THE DAY AND LESS THAN 5 KT OVERNIGHT. HIGHER GUSTS WITH CONVECTION. //ATL CONFIDENCE...12Z UPDATE... LOW CONFIDENCE ON IFR CIGS TUESDAY MORNING. HIGH CONFIDENCE ON ALL OTHER ELEMENTS. 31 && .PRELIMINARY POINT TEMPS/POPS... ATHENS 90 72 89 70 / 50 30 60 40 ATLANTA 88 72 87 71 / 50 30 60 40 BLAIRSVILLE 83 68 81 64 / 60 50 60 40 CARTERSVILLE 87 70 86 69 / 60 40 60 40 COLUMBUS 92 74 91 73 / 40 30 60 40 GAINESVILLE 87 71 85 70 / 50 40 60 40 MACON 93 71 91 71 / 40 30 50 40 ROME 88 71 88 69 / 60 50 60 40 PEACHTREE CITY 88 70 87 70 / 40 30 60 40 VIDALIA 95 75 93 73 / 30 20 40 40 && .FFC WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PEACHTREE CITY GA 442 AM EDT MON AUG 12 2013 GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086- 089>098-102>113-130845- BALDWIN-BANKS-BARROW-BARTOW-BIBB-BLECKLEY-BUTTS-CARROLL-CATOOSA- CHATTAHOOCHEE-CHATTOOGA-CHEROKEE-CLARKE-CLAYTON-COBB-COWETA- CRAWFORD-CRISP-DADE-DAWSON-DEKALB-DODGE-DOOLY-DOUGLAS-EMANUEL- FANNIN-FAYETTE-FLOYD-FORSYTH-GILMER-GLASCOCK-GORDON-GREENE- GWINNETT-HALL-HANCOCK-HARALSON-HARRIS-HEARD-HENRY-HOUSTON-JACKSON- JASPER-JEFFERSON-JOHNSON-JONES-LAMAR-LAURENS-LUMPKIN-MACON- MADISON-MARION-MERIWETHER-MONROE-MONTGOMERY-MORGAN-MURRAY- MUSCOGEE-NEWTON-NORTH FULTON-OCONEE-OGLETHORPE-PAULDING-PEACH- PICKENS-PIKE-POLK-PULASKI-PUTNAM-ROCKDALE-SCHLEY-SOUTH FULTON- SPALDING-STEWART-SUMTER-TALBOT-TALIAFERRO-TAYLOR-TELFAIR-TOOMBS- TOWNS-TREUTLEN-TROUP-TWIGGS-UNION-UPSON-WALKER-WALTON-WARREN- WASHINGTON-WEBSTER-WHEELER-WHITE-WHITFIELD-WILCOX-WILKES- WILKINSON- 442 AM EDT MON AUG 12 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH AND CENTRAL GEORGIA. .DAY ONE...TODAY AND TONIGHT... ISOLATED THUNDERSTORMS POSSIBLE THIS MORNING BECOMING MORE LIKELY IN THE AFTERNOON AND EVENING. WEATHER HAZARDS EXPECTED... FREQUENT LIGHTNING...GUSTY WINDS AND LOCALLY HEAVY RAINFALL WITH POSSIBLE FLASH FLOODING. DISCUSSION... A COLD FRONT OVER THE TENNESSEE VALLEY WILL GRADUALLY APPROACH NORTH GEORGIA THROUGH TONIGHT. AN UPPER LEVEL DISTURBANCE WILL COMBINE WITH DIURNAL HEATING AND A VERY MOIST TROPICAL AIRMASS TO PRODUCE THUNDERSTORMS LATER TODAY. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... SHOWERS AND THUNDERSTORMS LIKELY EACH DAY. WEATHER HAZARDS EXPECTED... FREQUENT LIGHTNING...GUSTY WINDS AND LOCALLY HEAVY RAINFALL WITH POSSIBLE FLASH FLOODING. DISCUSSION... A FRONTAL BOUNDARY SHOULD MOVE INTO NORTH GEORGIA BY WEDNESDAY AND SETTLE OVER SOUTH GEORGIA BY THURSDAY. THIS SURFACE BOUNDARY COMBINED WITH UPPER LEVEL DISTURBANCES AND TROPICAL MOISTURE WILL PRODUCE WIDESPREAD SHOWERS AND THUNDERSTORMS...MAINLY ACROSS THE CENTRAL SECTIONS OF THE STATE. CONDITIONS WILL CONTINUE TO BE MONITORED CLOSELY FOR POTENTIAL FLOODING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT REQUESTED BUT SPOTTERS ARE ENCOURAGED TO SUBMIT REPORTS OF SEVERE WEATHER OR FLOODING THROUGH THE WEB BY GOING TO WEATHER.GOV/ATLANTA. 16
The national radar mosaic for the moment the first event began.
1 lightning, 1 flash flood, 1 thunderstorm wind. Local standard time, as filed.
Broadcast media relayed reports of two people injured by lightning in Summerville. Wiring in the apartment complex that was struck was damaged.
The White County emergency manager reported that Shoal Creek and its associated drainage branches in southwest White County came out of their banks and flooded portions of Georgia Highway 115 and 284. Water was up to 8 inches deep over parts of Georgia Highway 115 and 284 with a couple of culverts washed out.
The Coweta County Emergency Manager and the public reported trees down near Thomas Crossroads, with power out as well. Power lines were down in four areas: the 500 block of Shaw Road, the 4000 and 4500 blocks of Highway 29 and the 200 block of Sam Road. Trees were also reported down on Lynhaven Drive, Salbide Avenue and Bruce Jackson Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Georgia in 2013Every state in 2013This day in weather historyWarnings in Georgia, August 2013
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: 468258, 470402, 468208.