A surface trough over the southeast Atlantic seaboard shifted south with moisture increasing over the area. A few strong to severe storms developed in the vicinity of the surface trough during the afternoon when instability was high.
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.
A surface trough over the southeast Atlantic seaboard shifted south with moisture increasing over the area. A few strong to severe storms developed in the vicinity of the surface trough during the afternoon when instability was high.
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 Jul 11, 1:22 PM EST, 3 hours 53 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 222 PM EDT SUN JUL 11 2010 .SYNOPSIS...SO FAR...PCPN ON TRACK WITH MORE WDSPRD ACTVITY FAR SRN COUNTIES OF OUR FCST AREA...MORE SCATTERED IN NATURE I-10 N...WITH ONLY ISOLD ACTVTY SCTRL GA. COVERAGE INCRS SOMEWHAT AS ACTVTY ALNG I-10 HEAD TWRDS JAX AREA...AS WELL AS FOR ACTIVITY ALNG W CST SEA BREEZE AND HEADING INTO NCTRL FL (E.G. GNV). THE TALLEST CORES THAT DVLP COULD PRODUCE WET MICROBURSTS THIS AFTN GIVEN UNSTABLE ENVIRONMENT PRODUCED BY HEATING AND MID 70S DWPTS. .SHORT TERM...TNGT THRU TUE NGT...EXPECT A GRAD DECREASE IN PCPN COVERAGE AND CLOUDINESS AFTER SUNSET TNGT. ANOTHER GOOD CHC OF SHRA/TSRA COMES TMRW AFTN/EVNG AS WEAK S/W OVER CTRL US MOVES OVER OUR AREA AND MOISTURE BAND ALOFT SETS UP OVER AREA. MAV POPS MAY BE A TAD HIGH GIVEN LACK OF STRONGER SUPPORT...BUT MET POPS SEEM TOO LOW...WILL GO WITH 50-60 FOR TMRW. MODEL LLVL THICKNESSES RISE A LITTLE TMRW...SUGGESTING AT LEAST L-M 90S FOR HIGH TEMPS. WITH HIGH DWPTS...WILL SEE OPPRESSIVE HEAT INDEX VALUES OF 100-110 IN THE AFTN. FOR TUE...MODELS SHOW UPR RIDGE BUILDING OVER AREA...SETTING UP SEA BREEZE COLLISION CTRL PART OF FL PENINSULA. WITH HIGH MOISTURE CONTENT WOULD ANTICIPATE DECENT SHRA/TSRA COVERAGE IN AFTN...WILL GO WITH AT LEAST 40-50 POPS. SIMILAR HIGH TEMPS AND AFTN HEAT INDEX VALUES COMPARED TO MON. .LONG TERM...WED THRU SUN...WEAK UPR TROF MOVES OVER ERN STATES WED...STALLING OVER OUR AREA WHILE WEAKENING THUR/FRI. UPR RIDGE BUILDS WWD FROM WRN ATL OVER OUR AREA NEXT WEEKEND. EXPECT AT OR SLIGHTLY ABOVE NORMAL TEMPS THRU PERIOD WITH HIGH HUMIDITY...ALONG WITH DAILY SCT'D AFTN/EVNG SHRA-TSRA DUE TO SEA BREEZES. && .AVIATION...HAVE PUT IN TEMPO TSRA IN NE FL TAFS WHERE MOST OF SHOWER ACTIVITY IS OCCURRING. STRONGER STORMS WILL PRODUCE GUSTY WINDS. HAVE ONLY VCTS IN SSI WHERE COVERAGE SHOULD BE LOWER. && .MARINE...SOUTHWEST FLOW TO CONTINUE NEXT FEW DAYS. WINDS WILL BE UP TO 15 KNOTS WITH SEAS 3 FEET OR LESS. NO HEADLINES. && .PRELIMINARY POINT TEMPS/POPS... AMG 74 95 75 95 / 20 50 30 50 SSI 77 90 78 91 / 20 50 30 50 JAX 76 94 76 94 / 20 60 30 50 SGJ 76 91 76 90 / 20 60 30 50 GNV 75 93 75 94 / 30 60 30 40 OCF 74 93 74 94 / 30 60 20 40 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && WOLF/ZIBURA
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 454 AM EDT SUN JUL 11 2010 FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-120900- 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- 454 AM EDT SUN JUL 11 2010 THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA. .DAY ONE...TODAY AND TONIGHT... ...STRONG THUNDERSTORMS POSSIBLE TODAY... NUMEROUS THUNDERSTORMS ARE FORECAST TODAY. SOME OF THESE STORMS WILL BE CAPABLE OF WIND GUSTS IN EXCESS OF 50 MPH AND TORRENTIAL DOWNPOURS WITH LOCALIZED FLOODING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... NUMEROUS THUNDERSTORMS ARE FORECAST AGAIN ON MONDAY. ISOLATED SEVERE THUNDERSTORMS WITH GUSTY WINDS AND HEAVY RAIN WILL BE POSSIBLE. HEAT INDICES COULD BE AS HIGH AS 105 TO 110 DEGREES ON MONDAY. THUNDERSTORMS ARE FORECAST EACH DAY FOR THE REST OF THE WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE REQUESTED TO SELF-ACTIVATE IF WARNINGS ARE ISSUED TODAY. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX. JDS
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
426 PM EDT SUN JUL 11 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0403 PM TSTM WND GST ST. AUGUSTINE 29.89N 81.31W
07/11/2010 M41 MPH ST. JOHNS FL AWOS
&&
SLSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 428 PM EDT SUN JUL 11 2010 FLZ033-112100- ST. JOHNS- 428 PM EDT SUN JUL 11 2010 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR CENTRAL ST. JOHNS COUNTY FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 500 PM EDT... AT 429 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED OVER BAKERSVILLE...OR 10 MILES WEST OF SAINT AUGUSTINE...MOVING SOUTHEAST AT 15 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND BAKERSVILLE...ELKTON... SAINT AUGUSTINE SOUTH...SAINT AUGUSTINE SHORES AND BUTLER BEACH THROUGH 500 PM EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 40 TO 50 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. LAT...LON 2977 8125 2975 8151 3008 8163 2999 8139 TIME...MOT...LOC 2029Z 297DEG 10KT 2990 8146 ZIBURA
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 451 PM EDT SUN JUL 11 2010 FLZ023-030-112115- BAKER-UNION- 451 PM EDT SUN JUL 11 2010 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR NORTHEASTERN UNION AND SOUTHERN BAKER COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 515 PM EDT... AT 451 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS CENTERED 3 MILES SOUTHWEST OF SANDERSON...OR 11 MILES NORTH OF RAIFORD...MOVING SOUTHEAST AT 15 MPH. WILL ALSO AFFECT AREAS AROUND SANDERSON THROUGH 515 PM EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 40 TO 50 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. LAT...LON 3042 8227 3015 8208 3008 8238 3033 8246 TIME...MOT...LOC 2051Z 299DEG 11KT 3020 8229 ZIBURA
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
525 PM EDT SUN JUL 11 2010
GAZ154-112215-
COASTAL GLYNN-
525 PM EDT SUN JUL 11 2010
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR EASTERN GLYNN
COUNTY FOR STRONG WINDS VALID UNTIL 615 PM EDT...
AT 525 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG TO SEVERE THUNDERSTORM CENTERED 8 MILES NORTHEAST OF BOYS
ESTATE...OR 4 MILES NORTHEAST OF DARIEN...MOVING SOUTH AT 10 MPH.
THIS STRONG THUNDERSTORM WILL AFFECT AREAS AROUND BOYS
ESTATE...LITTLE ST. SIMMONS ISLAND...ST. SIMONS...SEA ISLAND...GLYNN
HAVEN...DOCK JUNCTION AND COUNTRY CLUB ESTATES THROUGH 615 PM EDT.
GUSTY WINDS OF 40 TO 50 MPH CAN BE EXPECTED ALONG WITH POSSIBLE
MINOR WIND DAMAGE.
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
LAT...LON 3120 8129 3121 8131 3117 8134 3115 8153
3129 8152 3134 8148 3132 8141 3130 8140
3133 8137 3133 8136 3129 8127 3126 8126
TIME...MOT...LOC 2125Z 350DEG 9KT 3140 8139
SHASHYSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
607 PM EDT SUN JUL 11 2010
GAZ136-152>154-165-166-112245-
BRANTLEY-COASTAL CAMDEN-COASTAL GLYNN-INLAND CAMDEN-INLAND
GLYNN-WAYNE-
607 PM EDT SUN JUL 11 2010
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR NORTHEASTERN
BRANTLEY...SOUTHEASTERN WAYNE...NORTHEASTERN CAMDEN AND GLYNN
COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 645 PM
EDT...
AT 607 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM EVERETT TO 4 MILES
EAST OF LITTLE ST. SIMMONS ISLAND...MOVING SOUTHWEST AT 15 MPH. THESE
STRONG THUNDERSTORMS WILL AFFECT AREAS AROUND MOUNT
PLEASANT...LITTLE ST. SIMMONS ISLAND...EVERETT...BOYS ESTATE...SEA
ISLAND...THALMANN...ST. SIMONS...GLYNN HAVEN...COUNTRY CLUB ESTATES
AND DOCK JUNCTION THROUGH 645 PM EDT. 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 3120 8129 3121 8131 3113 8137 3114 8143
3110 8147 3109 8145 3113 8141 3106 8139
3097 8148 3118 8194 3146 8167 3143 8159
3138 8154 3130 8140 3131 8139 3133 8136
3130 8128 3127 8126
TIME...MOT...LOC 2207Z 044DEG 15KT 3138 8167 3125 8130
SHASHYSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
610 PM EDT SUN JUL 11 2010
FLZ024-GAZ164-112245-
CHARLTON-NASSAU-
610 PM EDT SUN JUL 11 2010
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR EASTERN
CHARLTON AND NORTHERN NASSAU COUNTIES FOR STRONG WINDS AND EXCESSIVE
LIGHTNING VALID UNTIL 645 PM EDT...
AT 611 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
CENTERED OVER NASSAU COUNTY...OR 4 MILES NORTHEAST OF HILLIARD...
MOVING SOUTHEAST AT 10 MPH. WILL ALSO AFFECT AREAS AROUND THROUGH 645
PM EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 40 TO
50 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 3077 8179 3071 8191 3089 8202 3092 8193
3088 8189 3082 8190 3078 8186 3078 8181
TIME...MOT...LOC 2211Z 297DEG 8KT 3075 8188
ZIBURAThe Jacksonville radar (KJAX), 81 km away, was scanning. The volume nearest the first event began at 22:14 UTC.
2 thunderstorm wind, 1 heavy rain. Local standard time, as filed.
A spotter measured 2.6 inches of rainfall in under one hour. The time frame of the event was estimated.
A tree was blown down at a residence which damaged the car and caused a power outage at the home. The time of the event was based on radar. The cost of damage was estimated.
Trees were blown down on Lake Drive.
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, July 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: 234687, 234681, 234682.