Thunderstorm Wind, Duval
- When
- August 15, 5:05 PM EST
- Where
- Duval County, 2.18 mi NNE of Greenland
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- Emergency Manager
- Coordinates
- 30.201, -81.543
Power lines were blown down in Southside.
Damaging Wind in Florida, August 15, 2013
The combination of passing upper level energy over an unstable airmass and low level convergence form the sea breezes and outflow boundaries resulted in severe storms across the forecast area. A surface front continued to meander over SE Ga/NE Fl.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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.
What happened
The episode as NWS JAX wrote it up.
The combination of passing upper level energy over an unstable airmass and low level convergence form the sea breezes and outflow boundaries resulted in severe storms across the forecast area. A surface front continued to meander over SE Ga/NE Fl.
What forecasters said that day
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 15, 12:55 PM EST, 4 hours 10 minutes earlier.
Area forecast discussion, Aug 15, 12:55 PM EST, 4 hours 10 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 155 PM EDT THU AUG 15 2013 ...SLIGHT RISK OF SEVERE STORMS OVER SE GEORGIA TODAY... .SHORT TERM...TONIGHT AND FRIDAY... SURFACE FRONT HAS STALLED OVER SE GEORGIA NEAR A LINE FROM JUST SOUTH OF HAZELHURST TO JUST NORTH OF JESUP. WEAK SURFACE LOW OVER SE AL HAS FORMED WITH BAND OF THUNDERSTORMS INCREASING TO THE EAST...OVER SW GA. STRONG INSTABILITY INDICATED SOUTH OF THE FRONT BY LAPS ANALYSIS WITH CAPE VALUES NOW 3000+ J/KG OVER SE GA. EXPECT THUNDERSTORMS TO INCREASE IN AREAL COVERAGE AND INTENSITY THIS AFTERNOON AND EVENING. SPC HAS INCLUDED THIS AREA IN A SLIGHT RISK OF SEVERE WEATHER WITH DAMAGING DOWNBURST WINDS A POSSIBLITY. OVER NE FL THE MAIN FOCUS WILL BE A SEABREEZE COLLISION LATE AFTN/EVE IN THE VICINITY...OR JUST WEST OF THE ST. JOHNS RIVER. EXPECT ACTIVITY TO SLOWLY DECREASE BY MIDNIGHT BUT MAY RETURN TO THE SUWANNEE VALLEY LATE TONIGHT AS TROPICAL MOISTURE SURGE OVER S FL MOVES NORTH. HAVE LIKELY POPS AREA WIDE ON FRIDAY AS TROPICAL MOISTURE SPREADS NORTH ACROSS THE AREA WITH PWATS PROGGED TO INCREASE TO 2.3". AREAS OF HEAVY RAINFALL WILL BE POSSIBLE ESPECIALLY OVER SOUTH GA NEAR STALLED FRONTAL BOUNDARY. THE WEEKEND...THE FRONTAL BOUNDARY WILL CONTINUE TO HOVER ACROSS SE GA...WITH A DEEP MOIST SOUTHWESTERLY FLOW CONTINUING OVER THE REGION. HAVE CATEGORICAL POPS FRIDAY EVENING OVER THE SUWANNEE VALLEY INTO SE GA AND LIKELY POPS ELSEWHERE. WILL CONTINUE LIKELY POPS FOR THE NRN PORTION LATE FRIDAY NIGHT TAPERING TO A SLIGHT CHANCE FOR THE SE PORTION. LIKELY POPS RETURN AGAIN EACH AFTN/EVENING THIS WEEKEND...THEN DECREASING TO 20-30% CHANCES AFTER MIDNIGHT. CLOUDS AND HIGH PRECIP COVERAGE WILL KEEP HIGH TEMPERATURES DOWN...WITH UPPER 80S/NEAR 90 FOR NE FL...AND MID 80S FOR MUCH OF SE GA. NEAR NORMAL LOW TEMPS ARE EXPECTED. .LONG TERM...MONDAY THROUGH THURSDAY... UPPER RIDGE OVER THE WESTERN ATLANTIC IS EXPECTED TO BUILD WEST OVER FL PENINSULA EARLY NEXT WEEK...THEN WEAKEN MID WEEK. FRONTAL BOUNDARY IS EXPECTED TO LINGER TO OUR NORTH. EXPECT POPS TO DECREASE TO NEAR NORMAL LEVELS. TEMPS WILL BE SEASONABLE ALSO. && .AVIATION... HAVE TEMPO TSRA IN ALL TAF SITES 21Z-01Z AS STORMS INCREASE IN COVERAGE. EXPECT VFR CONDITIONS WITH DECREASING RAIN CHANCES BY 02Z. && .MARINE... SOUTH TO SE FLOW WILL PERSIST THE NEXT FEW DAYS WITH STALLED FRONTAL BOUNDARY JUST TO THE NORTH OF THE WATERS. SEAS WILL REMAIN MOSTLY IN 2-3 FOOT RANGE. LATE DAY STORMS CAN BE EXPECTED AS WESTERLY STEERING FLOW CONTINUES THROUGH THE WEEKEND. RIP CURRENTS: LOW RISK WILL CONTINUE THROUGH FRIDAY. && .PRELIMINARY POINT TEMPS/POPS... AMG 71 87 72 86 / 70 80 80 70 SSI 75 84 75 86 / 60 70 70 60 JAX 73 88 74 89 / 60 70 70 60 SGJ 74 84 74 88 / 60 60 60 60 GNV 73 87 71 89 / 50 70 70 60 OCF 74 87 72 90 / 50 60 60 50 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && ZIBURA/TRABERT/MCALLISTER
Hazardous weather outlook, Aug 15, 2:51 PM EST, 2 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE JACKSONVILLE FL 351 PM EDT THU AUG 15 2013 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040- GAZ132>136-149>154-162>166-161000- 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- 351 PM EDT THU AUG 15 2013 ...ISOLATED STRONG TO SEVERE STORMS LATE THIS AFTERNOON AND EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA... SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT... A STALLED FRONTAL BOUNDARY OVER SOUTHEAST GEORGIA WILL COMBINE WITH A VERY MOIST AND UNSTABLE ATMOSPHERE TO PRODUCE SCATTERED TO NUMEROUS THUNDERSTORMS. THE BEST CHANCES WILL BE ACROSS SOUTHEAST GEORGIA AND ALONG THE ST. JOHNS RIVER BASIN OF NORTHEAST FLORIDA FROM LATE THIS AFTERNOON THROUGH THIS EVENING. A FEW STRONG TO SEVERE STORMS WILL BE POSSIBLE. THE MAIN CONCERNS WILL BE DAMAGING WIND GUSTS AND LOCALLY HEAVY RAINFALL. STORM MOTION IS NORTHEAST AROUND 15 TO 20 MPH. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... A STALLED FRONTAL BOUNDARY WILL MAINTAIN INCREASED THUNDERSTORM ACTIVITY FOR THE LAST HALF OF THE WEEK THROUGH THE WEEKEND. IN ADDITION...DEEP TROPICAL MOISTURE IS EXPECTED TO WORK INTO THE REGION...PRODUCING THE POTENTIAL FOR SIGNIFICANT RAINFALL. .SPOTTER INFORMATION STATEMENT... ALTHOUGH SPOTTER ACTIVATION IS NOT REQUESTED AT THIS TIME...SPOTTERS ARE ENCOURAGED TO REPORT SEVERE WEATHER REPORTS THROUGH OUR WEBSITE...TWITTER...FACEBOOK OR CALL OUR OFFICE. WE APPRECIATE YOUR SUPPORT. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX. ARS
In the hours before
Special weather statement, Aug 15, 4:01 PM EST, 1 hour 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
501 PM EDT THU AUG 15 2013
FLZ024-GAZ150-164>166-152130-
CHARLTON-COASTAL CAMDEN-INLAND CAMDEN-NASSAU-WARE-
501 PM EDT THU AUG 15 2013
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR EXTREME
SOUTHEASTERN WARE...NORTHEASTERN CHARLTON...SOUTHERN CAMDEN AND
NASSAU COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL
530 PM EDT...
AT 501 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 7 MILES SOUTHWEST
OF HOMELAND TO 4 MILES NORTHEAST OF HILLIARD TO 4 MILES EAST OF
CALLAHAN...MOVING NORTHEAST AT 30 MPH. THESE STRONG THUNDERSTORMS
WILL ALSO AFFECT AREAS AROUND RATLIFF...HILLIARD...CALLAHAN...KINGS
FERRY...HOMELAND...FOLKSTON...YULEE...KINGSLAND...WOODBINE AND
TARBORO THROUGH 530 PM EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND
GUSTY WINDS OF 40 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 3071 8147 3070 8147 3058 8162 3058 8164
3056 8166 3057 8171 3048 8182 3071 8225
3106 8193 3098 8159 3077 8145 3075 8145
3072 8144
TIME...MOT...LOC 2101Z 226DEG 28KT 3081 8211 3075 8187
3058 8176
TRABERTSpecial weather statement, Aug 15, 4:23 PM EST, 42 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
523 PM EDT THU AUG 15 2013
FLZ024-025-152200-
DUVAL-NASSAU-
523 PM EDT THU AUG 15 2013
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR EASTERN DUVAL
AND EASTERN NASSAU COUNTIES FOR EXCESSIVE LIGHTNING VALID UNTIL 600
PM EDT...
AT 523 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM JACKSONVILLE
INTERNATIONAL AIRPORT TO 3 MILES SOUTHWEST OF ORTEGA...MOVING
NORTHEAST AT 20 MPH. THESE THUNDERSTORMS WILL ALSO AFFECT AREAS
AROUND NORMANDY...JACKSONVILLE INTERNATIONAL AIRPORT...JACKSONVILLE
HEIGHTS...ORTEGA...RIVERSIDE...SAN MARCO...OCEANWAY...DOWNTOWN
JACKSONVILLE...TALLYRAND AND ARLINGTON THROUGH 600 PM EDT. EXCESSIVE
CLOUD-TO-GROUND LIGHTNING CAN BE EXPECTED. POSTPONE OUTDOOR
ACTIVITIES PROMPTLY. GO QUICKLY INSIDE A COMPLETELY ENCLOSED
BUILDING. UNPLUG ELECTRONIC DEVICES AND APPLIANCES AS THEY ARE
SUSCEPTIBLE TO POWER SURGES AND MAY BE DAMAGED BY NEARBY LIGHTNING
STRIKES. 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 3026 8145 3023 8180 3053 8176 3066 8143
3060 8144 3054 8143
TIME...MOT...LOC 2123Z 247DEG 16KT 3048 8169 3025 8172
TRABERTLocal storm report, Aug 15, 4:32 PM EST, 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
532 PM EDT THU AUG 15 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0529 PM TSTM WND GST JACKSONVILLE INTL ARPT 30.48N 81.71W
08/15/2013 M51 MPH DUVAL FL ASOS
THE JACKSONVILLE AIRPORT ASOS MEASURED A GUST TO 51 MPH.
&&
ARSSpecial weather statement, Aug 15, 4:32 PM EST, 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
532 PM EDT THU AUG 15 2013
FLZ024-025-152200-
DUVAL-NASSAU-
532 PM EDT THU AUG 15 2013
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR EASTERN DUVAL
AND EASTERN NASSAU COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING
VALID UNTIL 600 PM EDT...
AT 532 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 5 MILES NORTH OF
YULEE TO NAS JAX...MOVING EAST AT 20 MPH. THESE STRONG THUNDERSTORMS
WILL ALSO AFFECT AREAS AROUND NAS JAX...TALLYRAND...SAN MARCO...
RIVERSIDE...ORTEGA...OCEANWAY...JACKSONVILLE INTERNATIONAL AIRPORT...
DOWNTOWN JACKSONVILLE...MANDARIN AND YULEE THROUGH 600 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 3025 8144 3011 8144 3012 8168 3019 8169
3019 8176 3075 8167 3072 8161 3071 8154
3072 8153 3073 8149 3071 8147 3071 8143
3070 8142 3051 8144 3049 8141 3026 8137
TIME...MOT...LOC 2132Z 272DEG 17KT 3071 8158 3021 8166
TRABERTLocal storm report, Aug 15, 4:34 PM EST, 31 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE JACKSONVILLE FL
534 PM EDT THU AUG 15 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0528 PM TSTM WND GST JACKSONVILLE INTL ARPT 30.48N 81.71W
08/15/2013 M51.00 MPH DUVAL FL ASOS
THE JACKSONVILLE AIRPORT ASOS MEASURED A GUST TO 51 MPH.
&&
CORRECTED TIME.
ARSSpecial weather statement, Aug 15, 4:38 PM EST, 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
538 PM EDT THU AUG 15 2013
FLZ036-040-152230-
ALACHUA-MARION-
538 PM EDT THU AUG 15 2013
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHEASTERN
ALACHUA AND WESTERN MARION COUNTIES FOR STRONG WINDS AND EXCESSIVE
LIGHTNING VALID UNTIL 630 PM EDT...
AT 538 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 3 MILES WEST OF
MCINTOSH TO 13 MILES SOUTHWEST OF LOWELL...MOVING NORTHEAST AT 10
MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND
FLEMINGTON...MICANOPY...MCINTOSH...REDDICK...CROSS CREEK...
ROCHELLE...LOWELL...SPARR...LOCHLOOSA AND GROVE PARK THROUGH 630 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 2916 8239 2958 8231 2968 8206 2967 8205
2922 8207
TIME...MOT...LOC 2138Z 239DEG 10KT 2945 8227 2918 8232
TRABERTThe radar
The Jacksonville radar (KJAX), 35 km away, was scanning. The volume nearest the first event began at 22:05 UTC.
Event by event
1 thunderstorm wind. Local standard time, as filed.
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Heat in Nevada, August 15 to 17, 2013
- Heat in Utah, August 15, 2013
- Lightning Strike and Strong Wind in Georgia, August 15, 2013
- Damaging Winds in Texas, August 15 to 16, 2013
- Hail and Damaging Winds in Oklahoma, August 15 to 16, 2013
- Flash Flooding in New Mexico, August 15, 2013
- Flash Flooding and Hail in Kansas, August 15, 2013
- Hail in New Mexico, August 15, 2013
- Hail in Kansas, August 15, 2013
- Damaging Winds and Lightning Strike in Texas, August 15 to 16, 2013
- Waterspouts in Lake Erie, August 15, 2013
- Flash Flooding in South Carolina, August 15, 2013
More
Every storm in Florida in 2013Every state in 2013This day in weather historyWarnings in Florida, August 2013
Sources
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: 470522.