Prevailing SW flowed focused numerous evening thunderstorm activity toward the St. Johns River Basin.
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.
Prevailing SW flowed focused numerous evening thunderstorm activity toward the St. Johns River Basin. Large scale cyclonic flow helped spawn a few strong to severe storms.
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, 1:57 PM EST, 3 hours 33 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 257 PM EDT THU JUL 11 2013 .SHORT TERM /THIS AFTERNOON THROUGH FRIDAY/... SHOWERS AND STORMS HAVE DEVELOPED ALONG THE WEST COAST SBRZ AND WITH A WEAK STEERING FLOW ARE MOVING VERY SLOWLY INLAND. RADAR SHOWS A FEW SHOWERS POPPING UP NEAR THE ST. JOHNS RIVER BUT THE ATLC SBRZ HAS NOT ADVANCED VERY FAR BY EARLY AFTN. A MID LEVEL TROUGH EXTENDS FROM NC/TN MOUNTAINS SOUTH THROUGH GA AND THE FL PANHANDLE. WHILE DEEPER MOISTURE AND MORE WIDESPREAD STORM ACTIVITY REMAINS TO OUR WEST...THE TROUGH WILL DRIFT EASTWARD THROUGH FRIDAY BRINGING A FRONTAL BOUNDARY INTO SE GA. FOR THE REST OF TODAY...SHOWERS AND STORMS WILL INCREASE IN COVERAGE AS THEY MOVE TOWARD THE NE AND MEET THE ATLC SBRZ NEAR THE EAST COAST EARLY THIS EVENING. SLOW MOVING STORMS WILL PRODUCE LOCALLY HEAVY RAINFALL...AND A FEW STRONG STORMS MAY PRODUCE DAMAGING WIND GUSTS. MOST ACTIVITY OVER NE FL WILL DISSIPATE AROUND MIDNIGHT BUT THE APPROACHING MID LEVEL TROUGH WILL KEEP STORMS ALIVE THRU THE NIGHT OVER SE GA AND WILL KEEP HIGH CHANCE POPS (40-50%) THERE. DEEP MOISTURE WILL MOVE INTO THE FORECAST AREA FRIDAY WITH PWATS APPROACHING 2.3 INCHES OVER THE REGION. NUMEROUS TO WIDESPREAD COVERAGE OF SHOWERS/STORMS IS FORECAST. HAVE CAPPED POPS AT 70% FOR NOW. A SLOW STORM MOTION TO THE NORTH WILL ALLOW HEAVY RAINFALL TO OCCUR WITH LOCALIZED FLOODING BECOMING A CONCERN. CANNOT RULE OUT AN ISOLATED STRONG STORM BUT INSTABILITY WILL BE SOMEWHAT INHIBITED DUE TO CLOUDS AND PRECIP. WILL LEAN ON THE COOL SIDE OF GUIDANCE AND SHOW HIGHS GENERALLY IN THE 80S. FRI NIGHT-SUN...FRI NIGHT CONVECTION WILL TEND TO WIND DOWN LATE. LOWS IN THE LOWER TO MID 70S. SAT...BROAD SFC LOW OVER N FL ASSOCD WITH UPPER LEVEL LOW WILL CREATE DECENT LOW LEVEL CONVERGENCE AND WITH SEA BREEZE BOUNDARIES CREATE SCT TO NMRS SHOWERS AND STORMS AREA WIDE. LOCALLY HEAVY RAINFALL AND LIGHTNING THE MAIN THREATS. MEANWHILE REMNANTS OF CHANTAL WILL MOVE NWD OFF THE E COAST OF FLORIDA ALSO SUPPLYING DEEP MOISTURE TO THE MARINE AND COASTAL ZONES. ISOLD TO SCT CONVECTION SAT NIGHT...LOWERING TO ~25% OR LESS POPS AFTER MIDNIGHT. SUNDAY LOOKING A BIT BETTER AS DEEP LAYER MOISTURE STARTS TO SHIFT WWD DUE TO ENHANCED ELY FLOW AND UPPER LOW WEAKENS AND MOVES W...SUGGESTING INLAND AREAS WILL HAVE THE BEST RAIN CHANCES AROUND 50-60% AND ABOUT 30-40% COAST. HIGHS BOTH SAT AND SUN WILL TEND TO BE SLIGHTLY BELOW NORMAL DUE TO CLOUDS AND PRECIP. .LONG TERM...SUN NIGHT-THU. (PREVIOUS DISCUSSION)...BOTH ECMWF AND GFS INDICATE A BLOCKING PATTERN SETTING UP ACROSS THE CONUS...WITH RIDGING AMPLIFYING ACROSS THE NE AND SW CONUS...WITH TROUGHING RETROGRADING INTO THE MIDWEST. THE LOCAL AREA WILL BE AT THE PERIPHERY OF THE TROUGH TO THE W/NW...AND THE EASTERN SEABOARD RIDGE. DEEP TROPICAL MOISTURE IS PROGGED TO GRADUALLY DECREASE...ALBEIT SLIGHTLY. WILL GRADUALLY DECREASE POPS...WITH SLIGHTLY ABOVE NORMAL COVERAGE MONDAY LOWERING TO AROUND TYPICAL COVERAGE BY MIDWEEK. NEAR SEASONAL TEMPERATURES WILL CONTINUE. && .AVIATION...SHOWERS AND STORMS EXPECTED TO BE AT OR NEAR GNV AND METRO TAFS REST OF THE AFTN AND EVENING HOURS. SSI LESS OF A CHANCE. MVFR ANTICIPATED IN CONVECTION THOUGH BRIEF IFR POSSIBLE DUE TO LOW VSBY IN HEAVY RAINFALL. MOST OF THE ACTIVITY WILL WIND DOWN TONIGHT WITH POSSIBLE MVFR VSBY AT VQQ OTHERWISE VFR. CONVECTIVE CHANCES RATHER HIGH ON FRI SO AT THIS POINT INTRODUCED VICINITY CONVECTION STARTING AROUND 14Z. && .MARINE...SLY WINDS INCREASE UP TO 15 TO 20 KT TONIGHT OFFSHORE WATERS SO WILL INTRODUCE SCEC HEADLINE. OTHERWISE FOR FRI THROUGH WEEKEND WINDS AND SEAS GENERALLY BELOW HEADLINE CRITERIA. REMNANTS OF CHANTAL ANTICIPATED TO MOVE NWD OFFSHORE OF THE FL E COAST ON SAT AND UP TOWARD THE CAROLINAS. MAIN RESULT APPEARS TO BE INCREASED WIND/SEAS FOR A TIME ON SAT. RIP CURRENTS: LOW TODAY AND LIKELY LOW RISK FOR FRI. INCREASED SWELLS OVER THE WEEKEND MAY PROMPT MODERATE RISK. && .PRELIMINARY POINT TEMPS/POPS... AMG 73 88 72 87 / 70 70 50 60 SSI 76 86 76 84 / 60 70 50 60 JAX 72 88 73 87 / 60 70 50 60 SGJ 73 87 74 86 / 50 70 40 60 GNV 71 89 72 87 / 60 70 50 60 OCF 71 90 73 88 / 50 70 50 60 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && TRABERT/SHASHY/MCALLISTER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 312 PM EDT THU JUL 11 2013 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040- GAZ132>136-149>154-162>166-121000- ALTAMAHA SOUND GA TO FERNANDINA BEACH FL OUT 20 NM- FERNANDINA BEACH TO ST AUGUSTINE FL OUT 20 NM- ST AUGUSTINE TO FLAGLER BEACH FL OUT 20 NM- ALTAMAHA SOUND GA TO FERNANDINA BEACH FL 20 NM TO 60 NM OFFSHORE- FERNANDINA BEACH TO ST AUGUSTINE FL 20 NM TO 60 NM OFFSHORE- ST AUGUSTINE TO FLAGLER BEACH FL 20 NM TO 60 NM OFFSHORE-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- 312 PM EDT THU JUL 11 2013 ...ISOLATED STRONG TO SEVERE STORMS POSSIBLE THIS AFTERNOON AND EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA...SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS. .DAY ONE...REST OF TODAY AND TONIGHT... SCATTERED TO NUMEROUS THUNDERSTORMS WILL PREVAIL THIS AFTERNOON AND EVENING. ISOLATED STRONG TO SEVERE STORMS WILL BE POSSIBLE...WITH STRONG WINDS AND HAIL THE PRIMARY THREATS. LOCALLY HEAVY RAINFALL WILL ALSO BE POSSIBLE. RIVER FLOOD WARNINGS ARE IN EFFECT FOR PORTIONS OF SOUTHEAST GEORGIA RIVERS. PLEASE REFER TO STATEMENTS AND RIVER FLOOD WARNINGS FOR MORE INFORMATION. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... NUMEROUS AFTERNOON AND EVENING THUNDERSTORMS CAN BE EXPECTED THROUGH THE WEEKEND. SOME OF THE STORMS WILL BE CAPABLE OF PRODUCING GUSTY WINDS...HAIL...AND LOCALLY HEAVY RAINFALL. THUNDERSTORM COVERAGE WILL DECREASE EARLY NEXT WEEK. .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 559 PM EDT THU JUL 11 2013 FLZ025-032-033-112230- CLAY-DUVAL-ST. JOHNS- 559 PM EDT THU JUL 11 2013 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR NORTHERN CLAY...CENTRAL ST. JOHNS AND SOUTHERN DUVAL COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 630 PM EDT... AT 559 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 2 MILES NORTH OF ASBURY LAKE TO 2 MILES SOUTHWEST OF GREEN COVE SPRINGS...MOVING NORTHEAST AT 15 MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND PENNEY FARMS...MIDDLEBURG...ASBURY LAKE...GREEN COVE SPRINGS...OAKLEAF PLANTATION...DOCTORS INLET...LAKESIDE...FLEMING ISLAND AND NOCATEE THROUGH 630 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 3034 8168 3009 8140 2984 8169 3008 8197 TIME...MOT...LOC 2159Z 225DEG 11KT 3009 8182 2997 8168 HESS
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
609 PM EDT THU JUL 11 2013
GAZ162-163-112300-
CLINCH-ECHOLS-
609 PM EDT THU JUL 11 2013
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR CENTRAL CLINCH
AND CENTRAL ECHOLS COUNTIES FOR STRONG WINDS VALID UNTIL 700 PM
EDT...
AT 608 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED OVER ECHOLS COUNTY...MOVING NORTHEAST AT 10
MPH. THESE STRONG THUNDERSTORMS WILL IMPACT MAINLY RURAL AREAS OF THE
INDICATED COUNTIES THROUGH 700 PM EDT. GUSTY WINDS OF 40 TO 50 MPH
CAN BE EXPECTED ALONG WITH POSSIBLE MINOR WIND DAMAGE. VERY HEAVY
RAINFALL IS EXPECTED IN THESE STORMS AS WELL.
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
LAT...LON 3096 8276 3079 8259 3067 8276 3068 8286
3078 8299
TIME...MOT...LOC 2208Z 234DEG 10KT 3076 8285
SHASHYSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
612 PM EDT THU JUL 11 2013
GAZ134-150-151-112300-
BACON-PIERCE-WARE-
612 PM EDT THU JUL 11 2013
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR NORTHWESTERN
WARE...WESTERN PIERCE AND SOUTHERN BACON COUNTIES FOR STRONG WINDS
VALID UNTIL 700 PM EDT...
AT 612 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED 4 MILES WEST OF DIXIE UNION...MOVING NORTHEAST
AT 10 MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND
WARESBORO...PEBBLE HILL...DIXIE UNION AND JAMESTOWN THROUGH 700 PM
EDT. GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE
MINOR WIND 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 3141 8259 3149 8246 3136 8227 3125 8238
3123 8249 3123 8254 3133 8263
TIME...MOT...LOC 2212Z 218DEG 10KT 3132 8252
SHASHYSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
623 PM EDT THU JUL 11 2013
GAZ150-164-112315-
CHARLTON-WARE-
623 PM EDT THU JUL 11 2013
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR EXTREME
SOUTHEASTERN WARE AND CENTRAL CHARLTON COUNTIES FOR STRONG WINDS
VALID UNTIL 715 PM EDT...
AT 623 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 9 MILES SOUTHWEST OF FOLKSTON...MOVING
NORTH AT 10 MPH. THIS STRONG THUNDERSTORM WILL AFFECT AREAS AROUND
FOLKSTON AND HOMELAND THROUGH 715 PM EDT. GUSTY WINDS OF 45 TO 55
MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR WIND DAMAGE. VERY
RAINFALL IS ALSO EXPECTED.
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
LAT...LON 3079 8199 3079 8202 3076 8202 3075 8204
3071 8203 3067 8205 3070 8221 3072 8224
3097 8215 3091 8193
TIME...MOT...LOC 2223Z 199DEG 9KT 3075 8211
SHASHYSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
623 PM EDT THU JUL 11 2013
FLZ033-038-112315-
FLAGLER-ST. JOHNS-
623 PM EDT THU JUL 11 2013
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHERN ST.
JOHNS AND FLAGLER COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING
VALID UNTIL 715 PM EDT...
AT 624 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 2 MILES WEST OF
SPUDS TO 16 MILES SOUTHWEST OF BUNNELL...MOVING EAST AT 5 MPH. THESE
STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND HASTINGS...
ANDALUSIA...SPUDS...BAKERSVILLE...SAINT AUGUSTINE SOUTH...SAINT
AUGUSTINE SHORES...PALM COAST...ESPANOLA...ELKTON AND DUPONT CENTER
THROUGH 715 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 2926 8116 2926 8141 2939 8143 2939 8146
2940 8148 2945 8149 2948 8151 2955 8153
2975 8152 2980 8156 2988 8160 2997 8134
2941 8114 2927 8114
TIME...MOT...LOC 2224Z 254DEG 5KT 2975 8150 2925 8136
HESSSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
626 PM EDT THU JUL 11 2013
FLZ025-032-112300-
CLAY-DUVAL-
626 PM EDT THU JUL 11 2013
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR NORTHERN CLAY
AND CENTRAL DUVAL COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING
VALID UNTIL 700 PM EDT...
AT 626 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED OVER BELLAIR...MOVING NORTH AT 25 MPH. THESE
STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND OAKLEAF
PLANTATION...FLEMING ISLAND...ORANGE PARK...MANDARIN...LAKESIDE...
DOCTORS INLET...BELLAIR...NAS JAX AND BAYMEADOWS THROUGH 700 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 3012 8156 3013 8160 3012 8168 3009 8168
3010 8187 3041 8189 3055 8173 3056 8159
3054 8158 3054 8155 3052 8154 3055 8152
3056 8152 3056 8150
TIME...MOT...LOC 2226Z 179DEG 20KT 3021 8177
HESSThe Jacksonville radar (KJAX), 27 km away, was scanning. The volume nearest the first event began at 22:31 UTC.
2 thunderstorm wind. Local standard time, as filed.
Trees and power line wires were blown down around the 5500 block of 118th Street. The time of the event was based on radar.
Trees were blown down on 4 homes along 118th Street on the Jacksonville Westside, and one tree was blown down on a car. No injuries were reported. The time of the event was based on radar imagery.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2013Every state in 2013This day in weather historyWarnings in Florida, July 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: 466671, 466672.