Isolated severe storms developed over an unstable air mass as the Gulf Coast sea breeze front moved inland and produced outflows. Widespread wind damage occurred across Douglas from a severe storm.
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 JAX wrote it up.
Isolated severe storms developed over an unstable air mass as the Gulf Coast sea breeze front moved inland and produced outflows. Widespread wind damage occurred across Douglas from a severe storm.
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 Jacksonville, FL wrote its last area forecast discussion before the first event at Aug 21, 1:40 PM EST, 1 hour 25 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 240 PM EDT SUN AUG 21 2011 .SHORT TERM...UPPER LEVEL FEATURES INCLUDE FULL SCALE TROUGH OVER THE EASTERN UNITED STATES...ALTHOUGH SOUTHERN EXTENSION OF THIS FEATURE REMAINS QUITE WEAK. ANOTHER FEATURE IS THE STRONG SUBTROPICAL HIGH OVER THE SOUTH-CENTRAL UNITED STATES WITH ANOTHER HIGH OVER THE WESTERN ATLANTIC BASIN. A WEAK PRESSURE PATTERN WAS NOTED IN THE LOWER LEVELS OF THE ATMOSPHERE. SHOWERS AND THUNDERSTORMS WERE BECOMING ORGANIZED ALONG THE GULF COAST SEA BREEZE...WITH ACTIVITY BEGINNING TO MOVE INTO OUR INTERIOR-MOST NORTHEAST FLORIDA COUNTIES AS OF 2 PM EDT. ISOLATED SHOWERS AND STORMS WERE NOTED ACROSS SOUTHEAST GEORGIA. FOR THE REMAINDER OF THIS AFTERNOON...ACTIVITY WILL CONTINUE TO SPREAD TOWARDS THE EAST-NORTHEAST. PULSE STRONG/SEVERE THUNDERSTORMS ARE POSSIBLE ALONG WITH HEAVY RAINFALL WITH THE STRONGER THUNDERSTORMS. A MOIST...UNSTABLE PATTERN WILL CONTINUE THROUGH EARLY PART OF NEXT WEEK WITH SERIES OF MID LEVEL DISTURBANCES DIVING SOUTHEAST...REINFORCING AFOREMENTIONED FULL SCALE TROUGH. HAVE INCLUDED HOMOGENEOUS CHANCE POPS FOR MONDAY WITH SHOWERS AND STORMS LIKELY FOCUSING ACROSS ACROSS NORTHEAST FLORIDA ON TUESDAY AS A DRIER AND MORE STABLE AIR MASS TEMPORARILY WORKS IN FROM THE NORTH. MOISTURE WILL RAPIDLY INCREASE NORTHWARD ON WEDNESDAY AS A DEEPENING EASTERLY FLOW ESTABLISHES ACROSS THE FORECAST AREA...WELL AHEAD OF IRENE. IRENE IS FORECAST TO REACH THE BAHAMAS AND INDIRECT IMPACTS ARE INITIALLY FORECAST IN THE FORM OF INCREASING SEAS RESULTING IN AN ELEVATED RIP CURRENT RISK. .LONG TERM...ALL EYES FOCUSED ON FLORIDA AS MEDIUM RANGE GUIDANCE AS WELL AS OFFICIAL FORECAST TRACK FROM NHC ADVANCE IRENE NORTHWARD TOWARDS FLORIDA OR ITS ADJACENT COASTAL WATERS. THERE ARE MYRIAD SCENARIOS AND IRENE FIRST MUST OVERCOME MOUNTAINOUS TERRAIN ACROSS HISPANIOLA. THE EXTENDED FORECAST IS HIGHLY DEPENDENT ON THE TRACK AND STRENGTH OF IRENE. LOCAL AND MARINE INTERESTS SHOULD CLOSELY MONITOR FORECASTS AND THE PROGRESS OF THIS FEATURE. && .AVIATION...SCATTERED STORMS TIL 00Z AND HAVE VCTS AT ALL NE FL TERMINALS AND CB AT SSI. OTHERWISE PREVAILING VFR. && .MARINE...NO HEADLINES THRU THE SHORT TERM. WINDS AND SEAS CAPPED DUE TO UNCERTAINTY WITH IRENE TOWARD THE END OF THE FORECAST PACKAGE. RIP CURRENTS: LOW RISK WILL CONTINUE THRU MON. && .PRELIMINARY POINT TEMPS/POPS... AMG 74 96 75 94 / 30 50 20 30 SSI 78 93 78 90 / 30 40 30 20 JAX 74 94 75 93 / 30 50 30 30 SGJ 75 92 76 91 / 20 30 30 20 GNV 73 93 74 93 / 30 50 20 30 OCF 73 93 74 93 / 30 40 20 40 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && ZAPPE/PETERSON/PRESNALL
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 508 AM EDT SUN AUG 21 2011 FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-220915- HAMILTON-SUWANNEE-COLUMBIA-BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY- ST JOHNS-GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION-COFFEE- JEFF DAVIS-BACON-APPLING-WAYNE-ATKINSON-WARE-PIERCE-BRANTLEY- INLAND GLYNN-COASTAL GLYNN-ECHOLS-CLINCH-CHARLTON-INLAND CAMDEN- COASTAL CAMDEN- 508 AM EDT SUN AUG 21 2011 THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA. .DAY ONE...TODAY AND TONIGHT... HEAT INDICES IN THE 100 TO 105 RANGE ARE EXPECTED THIS AFTERNOON. SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON. A FEW OF THESE STORMS COULD BE STRONG...PRODUCING BRIEF WIND GUSTS AND A PERIOD OF HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... HEAT INDICES IN THE 100 TO 105 RANGE ARE EXPECTED MONDAY AFTERNOON. TROPICAL STORM IRENE NOW MOVING TOWARD THE NORTHEASTERN CARRIBEAN...IS EXPECTED TO APPROACH THE FLORIDA PENINSULA LATE THIS WEEK. AREA RESIDENTS SHOULD CONTINUE TO MONITOR THE PROGRESS OF IRENE...AND REVIEW THEIR PREPAREDNESS PLANS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT REQUESTED AT THIS TIME. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
329 PM EDT SUN AUG 21 2011
GAZ132-212000-
COFFEE-
329 PM EDT SUN AUG 21 2011
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR EASTERN COFFEE
COUNTY FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 400 PM
EDT...
AT 329 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 5 MILES SOUTHWEST OF WEST GREEN...OR 5
MILES NORTHEAST OF DOUGLAS...MOVING SOUTH AT 5 MPH. THIS STRONG
THUNDERSTORM WILL ALSO AFFECT AREAS AROUND WEST GREEN...BROXTON AND
DOUGLAS THROUGH 400 PM EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND
GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR
DAMAGE.
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
LAT...LON 3148 8262 3140 8284 3140 8287 3162 8294
3168 8276 3167 8274
TIME...MOT...LOC 1929Z 339DEG 4KT 3157 8280
TRABERTSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
338 PM EDT SUN AUG 21 2011
FLZ040-212030-
MARION-
338 PM EDT SUN AUG 21 2011
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR WESTERN MARION
COUNTY FOR STRONG WINDS...SMALL HAIL AND EXCESSIVE LIGHTNING VALID
UNTIL 430 PM EDT...
AT 338 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 5 MILES NORTHWEST OF DUNNELLON...OR 5
MILES SOUTHWEST OF RAINBOW LAKES ESTATES...MOVING NORTHEAST AT 5 MPH.
THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND DUNNELLON...
ROMEO AND RAINBOW LAKES ESTATES THROUGH 430 PM EDT. HAIL UP TO THREE
QUARTER INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND
GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR
DAMAGE. HEAVY RAINFALL WILL PRODUCE PONDING OF WATER ON ROADWAYS AND
MINOR FLOODING OF LOW-LYING AREAS.
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
LAT...LON 2905 8248 2904 8250 2904 8253 2905 8254
2920 8254 2922 8250 2922 8241 2927 8241
2929 8238 2907 8226 2901 8243
TIME...MOT...LOC 1938Z 243DEG 4KT 2910 8250
PETERSONSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 346 PM EDT SUN AUG 21 2011 GAZ132-149-212015- ATKINSON-COFFEE- 346 PM EDT SUN AUG 21 2011 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR NORTHERN ATKINSON AND SOUTHERN COFFEE COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 415 PM EDT... AT 347 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED OVER DOUGLAS...MOVING SOUTH AT 5 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND DOUGLAS THROUGH 415 PM EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. LAT...LON 3134 8274 3136 8301 3155 8290 3156 8275 TIME...MOT...LOC 1947Z 005DEG 4KT 3149 8286 TRABERT
The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
County dispatch reported that 15 different reports of trees blown down occurred across the Douglas city limits. The time of the events was based on radar imagery.
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, August 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: 329800.