The combination of multiple lingering convergent boundaries from previous convection, an approaching upper level short wave trough from the NW, and the sea breezes fueled scattered severe storms over an unstable airmass in the afternoon and evening. Gusty winds and heavy rainfall were the main hazards.
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.
The combination of multiple lingering convergent boundaries from previous convection, an approaching upper level short wave trough from the NW, and the sea breezes fueled scattered severe storms over an unstable airmass in the afternoon and evening. Gusty winds and heavy rainfall were the main hazards.
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 Sep 6, 8:53 AM EST, 4 hours 52 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 953 AM EDT FRI SEP 6 2013 .UPDATE...WATER VAPOR IMAGERY AND MODEL ANALYSES SHOW BROAD TROUGHING IN THE MID AND UPPER LEVELS OVER THE ERN U.S. WITH SHORTWAVES SLIDING SSE OVER THE TN AND MS VALLEY AREAS. ONE SHORTWAVE IS NOTED OVER CENTRAL AL AND GA PER VISIBLE IMAGERY AND NAM FCSTS. DRIER AIR HAS BEEN FILTERING IN FROM THE N PER IMAGERY AS WELL AS PWAT ANALYSIS...WITH PWATS AS LOW AS 1.4 INCHES IN SE GA BUT PEAKING AROUND 2 INCHES IN SECTIONS OF NE FL. SFC FRONTAL BOUNDARY IS LOCATED ROUGHLY ALONG A LINE 31N80W TO BRUNSWICK GA TO ALBANY GA MOSTLY SUNNY SKIES ATTM OVER THE CWA WITH SHOWERS AND STORMS NOW BEYOND OUR 60 NM ZONE IN THE OFFSHORE MARINE WATERS. THE JAX 12Z SOUNDING SHOWS PWAT OF JUST OVER 2 INCHES...MODIFIED SBCAPE OF ABOUT 3650 J/KG AND LI OF -7. FOR REST OF TODAY...MOSTLY SUNNY SKIES WILL GIVE WAY TO PARTLY CLOUDY CONDITIONS AS CUMULUS FORM BY MID TO LATE MORNING. MAIN FOCUS FOR CONVECTION WILL INITIALLY BE ALONG THE W AND E COAST SEA BREEZES DUE TO A WEAK PRES GRADIENT AND DAYTIME INSTABILITY. WITH DRIER AIR FILTERING IN ON MID/UPPER LEVEL FLOW FROM THE NW AND N AND THE FRONTAL BOUNDARY DRIFTING SWD ALONG WITH INLAND SHIFT OF THE E COAST SEA BREEZE...BEST RAIN CHANCES ARE EXPECTED TO BE OVER INLAND PORTIONS OF NE FL. MAIN CONCERNS WILL BE GUSTY DOWN-BURST WINDS...POSSIBLY APPROACHING SEVERE LEVELS AND LOCALLY HEAVY RAINFALL DUE TO CELL MERGERS AND OUTFLOW BOUNDARY COLLISIONS. STORM MOTION WILL GENERALLY BE TO THE S AT 5-10 MPH. MAIN FCST UPDATE WAS TO INCREASE POPS SLIGHTLY ALONG THE E COAST SEA BREEZE AND DELAY PRECIP ONSET. CONVECTIVE INITIATION WILL LIKELY ALSO OCCUR ALONG MOVING FRONTAL BOUNDARY. && .AVIATION...PREVALING VFR TODAY. VCTS ADVERTISED FOR TAFS BY THE 18Z TIME PERIOD...THOUGH BEST CHANCES EXPECTED AROUND GNV. GUSTY WINDS AND MVFR POSSIBLE WITH T-STORMS TODAY. LIGHT NLY WINDS TO BECOME NE AND THEN ENE IN THE AFTN. OUTLOOK FOR TONIGHT...SOME INDICATIONS FOG AND SOME STRATUS WILL BE POSSIBLE BASED ON LATEST GUIDANCE...MAINLY FOR NE FL TAFS. && .MARINE...WINDS ARE VARIABLE LESS THAN 10 KT AND SEAS LOOK TO BE 2 FT OR LESS BASED ON LATEST READINGS AT 41008 AND 41012. WINDS EXPECTED TO TURN NELY AROUND 10 KT IN THE AFT WITH SOME WIND WAVE CHOPPY WITH SEAS NEAR 2-3 FT. RIP CURRENTS: LOW RISK TODAY WITH SURF AT 1 FT OR LESS DUE TO SMALL E SWELLS NEAR 8-10 SECONDS. RISK MAY BECOME MODERATE ON SATURDAY PERHAPS INTO SUNDAY AS WELL AS ONSHORE WINDS AND SEAS INCREASE. && .PRELIMINARY POINT TEMPS/POPS... AMG 92 71 91 70 / 30 30 10 10 SSI 87 75 86 74 / 20 20 20 10 JAX 89 73 88 72 / 30 30 20 10 SGJ 87 75 86 73 / 30 30 20 10 GNV 91 71 90 70 / 60 40 30 20 OCF 91 73 91 71 / 60 40 30 30 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && SHASHY/MCALLISTER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 145 PM EDT FRI SEP 6 2013 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040- GAZ132>136-149>154-162>166-070852- 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- 145 PM EDT FRI SEP 6 2013 ...RIVER FLOOD WARNINGS IN EFFECT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA... SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT... THUNDERSTORMS ARE EXPECTED TO EXPAND IN COVERAGE ACROSS INLAND AREAS...WITH THE GREATEST COVERAGE OVER NORTHEAST FLORIDA. LOCALLY HEAVY RAINFALL AND A FEW STRONG THUNDERSTORMS ARE EXPECTED AND CAPABLE OF PRODUCING GUSTY WINDS...ESPECIALLY OVER THE SUWANNEE RIVER OF NORTHEAST FLORIDA BY LATE AFTERNOON. FREQUENT TO EXCESSIVE LIGHTNING WILL ACCOMPANY THE STRONGER CELLS. THUNDERSTORM ACTIVITY WILL GRADUALLY DECREASE IN COVERAGE AND INTENSITY OVER INLAND AREAS AFTER SUNSET. RIVER FLOOD WARNINGS REMAIN IN EFFECT FOR PORTIONS OF THE REGION. PLEASE REFER TO RIVER FLOOD STATEMENTS AND WARNINGS FOR DETAILS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH FRIDAY... ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED EACH DAY...MAINLY DURING THE AFTERNOON AND EVENING HOURS. AN ELEVATED RISK OF RIP CURRENTS IS EXPECTED SATURDAY THROUGH EARLY NEXT WEEK DUE TO INCREASED ONSHORE FLOW AND BUILDING EASTERLY SWELLS. .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.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1151 AM EDT FRI SEP 06 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0530 PM HEAVY RAIN 1 W NAHUNTA 31.21N 81.99W
09/05/2013 E3.00 INCH BRANTLEY GA TRAINED SPOTTER
SKYWARN SPOTTER ESTIMATED 3 INCHES OF RAIN AND GUSTY
WINDS.
&&
ARSSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1247 PM EDT FRI SEP 6 2013
FLZ038-061730-
FLAGLER-
1247 PM EDT FRI SEP 6 2013
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR EASTERN FLAGLER
COUNTY FOR STRONG WINDS AND SMALL HAIL VALID UNTIL 130 PM EDT...
AT 1247 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED OVER BUNNELL...MOVING SOUTH AT 5 MPH.
THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND FLAGLER
BEACH...ESPANOLA AND BUNNELL THROUGH 130 PM EDT. HAIL UP TO THREE
QUARTER INCH IN DIAMETER 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 2942 8113 2941 8115 2940 8115 2934 8115
2934 8135 2957 8132 2955 8115 2942 8111
TIME...MOT...LOC 1647Z 009DEG 6KT 2949 8125
SHASHYSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
131 PM EDT FRI SEP 6 2013
FLZ038-061815-
FLAGLER-
131 PM EDT FRI SEP 6 2013
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR CENTRAL FLAGLER
COUNTY FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 215 PM
EDT...
AT 131 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED 5 MILES NORTH OF ESPANOLA...MOVING SOUTH AT 10
MPH. THESE STRONG THUNDERSTORMS WILL AFFECT AREAS AROUND PALM
COAST...ESPANOLA AND BUNNELL THROUGH 215 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 2932 8135 2961 8140 2962 8122 2939 8114
2931 8115
TIME...MOT...LOC 1731Z 019DEG 7KT 2957 8132
SHASHYSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 205 PM EDT FRI SEP 6 2013 FLZ024-025-061845- DUVAL-NASSAU- 205 PM EDT FRI SEP 6 2013 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR WESTERN DUVAL AND SOUTHWESTERN NASSAU COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 245 PM EDT... AT 206 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED OVER WHITEHOUSE AIR FIELD...MOVING SOUTHWEST AT 10 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND CISCO GARDENS...WHITEHOUSE AIR FIELD...ORTEGA...NORMANDY... BRYCEVILLE...NAS JAX...JACKSONVILLE HEIGHTS...BALDWIN...CECIL FIELD AND MAXVILLE THROUGH 245 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 3019 8167 3019 8205 3043 8203 3045 8172 TIME...MOT...LOC 1806Z 027DEG 9KT 3033 8186 SHULER
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 217 PM EDT FRI SEP 6 2013 FLZ033-038-061900- FLAGLER-ST. JOHNS- 217 PM EDT FRI SEP 6 2013 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHERN ST. JOHNS AND CENTRAL FLAGLER COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 300 PM EDT... AT 217 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 5 MILES NORTHWEST OF ESPANOLA...MOVING SOUTH AT 35 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND ESPANOLA AND BUNNELL THROUGH 300 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 2940 8142 2975 8153 2982 8135 2946 8124 TIME...MOT...LOC 1817Z 339DEG 31KT 2953 8135 SHULER
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
226 PM EDT FRI SEP 06 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0159 PM TSTM WND DMG BUNNELL 29.47N 81.26W
09/06/2013 FLAGLER FL EMERGENCY MNGR
A POWERLINE REPORTED DOWN NEAR HARDY STREET AND 2ND
STREET.
0208 PM TSTM WND GST 8 WSW BUNNELL 29.42N 81.38W
09/06/2013 E40.00 MPH FLAGLER FL TRAINED SPOTTER
AMATEUR RADIO SPOTTER ESTIMATES WINDS NEAR 40 MPH.
&&
ARSThe Jacksonville radar (KJAX), 46 km away, was scanning. The volume nearest the first event began at 18:43 UTC.
10 thunderstorm wind, 2 hail, 2 lightning. Local standard time, as filed.
A two foot diameter tree was uprooted off of County Road 739 and Black Creek in the McRae Landing Subdivision.
Dime to penny size hail was observed at the intersection of Blanding Blvd and Old Jennings Road.
Large tree limbs and branches were blown down along with pea size hail just NW of Doctor's Inlet. Rainfall amounts greater than 1 inch were measured in 20 minutes.
Three large trees were blown down near Lake Asbury.
Quarter size hail was observed just south of Sandridge Road between Middleburg and Green Cove Springs.
County dispatch reported several tree limbs down and power lines damaged due to thunderstorm winds. A couple of trees were also blown over the roadways in the Lake Asbury area. The time of damage was based on radar imagery.
Winds were estimated at 60 mph in Penny Farms with a lot of tree debris caused by thunderstorm winds.
Trees were blown down along State Road 100.
The post office was struck by lightning which caused damage. The cost of damage was unknown but estimated so that this event could be included in StormData.
A residential occurred as a result of a lightning strike. The cost of damage was unknown and estimated so the event could be included in StormData.
A tree was blown down along County Road 325 just NW of Lochloosa Lake. The time of damage was based on radar.
Personal at the Ichetucknee Springs State Park reported trees and tree debris were blown down. The time of damage was based on radar imagery.
A tree was blown down over the roadway at County Road 136A and a power line was blown down by winds across County Road 129A. The time of damage based on radar.
A large barn was badly damaged by thunderstorm winds in addition to window and roof damage to 3 homes along County Road 137 to the NW of White Springs. Several trees were blown down over the road. The time of damage was based on radar.
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, September 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: 472243, 472237, 472239, 472268, 472238, 472244, 472269, 472240, 472241, 472250, 472247, 472249, 472246, 472245.