A surge of moisture from the SE and a coastal trough along the Atlantic coast focused the highest potential for afternoon strong to severe storms across inland NE Florida. These convective ingredients under a retrograding short wave trough axis enhanced diurnally driven sea breeze storms across inland NE Floirda, with wet downbursts causing wind damage.
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 surge of moisture from the SE and a coastal trough along the Atlantic coast focused the highest potential for afternoon strong to severe storms across inland NE Florida. These convective ingredients under a retrograding short wave trough axis enhanced diurnally driven sea breeze storms across inland NE Floirda, with wet downbursts causing wind damage.
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 13, 12:12 PM EST, 3 hours 3 minutes earlier.
Area Forecast Discussion National Weather Service Jacksonville FL 112 PM EDT Thu Jul 13 2017 ...NEAR TERM WARMING TREND WITH LOWER RAIN CHANCES FRIDAY... .NEAR TERM...Today & Friday... This afternoon...Deeper ESE flow today compared to yesterday with a return of higher moisture. PWAT values were almost 0.5 inches more than 24 hrs ago with JAX at 1.97" this morning per the 12Z RAOB. This increase in moisture along with diurnal heating created an earlier start to convection today with scattered showers popping across the St. Johns River basin by 11 am. The surface ridge axis extended across SC from a center across the western Atlantic. This increased subsidence will limit convective growth across SE GA today, with the highest rain chances expected across NE FL. As the afternoon progresses, the east coast sea breeze will continue to press farther inland serving as the main foci for scattered to numerous showers/tstorms, mainly west of Highway 301 by mid-afternoon, then more toward the I-75 corridor through the late afternoon and early evening hours. Given the presence of dry mid level air generally above 615 mb, even drier than yesterday, the Downdraft CAPE (DCAPE) from the JAX RAOB was over 1000 J/kg. This index indicates an increased potential in strong wet downbursts from deeper tstorms, with gusts of 40-60 mph possible. Thus, a few strong to severe are possible this afternoon and evening, generally west of Highway 301. Tonight...Expect a clear evening along the Atlantic coast, and dry conditions after sunset for most locations as convection inland near the I-75 corridor fades with loss of heating and drifts farther west. Given fog and stratus across SE GA this morning, and that SREF guidance yesterday handled this well, advertised patchy fog in the forecast for inland SE GA and the northern Suwannee River Valley tonight. Fog could be locally dense at times. Low temps will range in the 70s inland to near 80 along the St. Johns River basin and Atlantic coast due to onshore flow. Fri...The low level ridge axis will settle farther south across SE GA. The east coast sea breeze will continue to be dominant with morning coastal showers possible mainly along the NE FL coast, then additional convective growth will spread inland through the day toward I-75, while the east coast clears into the mid afternoon. Rainfall coverage is expected to be less with drier air spreading across the area and the increase in low level subsidence, but this could support some isolated stronger storms capable of gusty winds. In addition, slower storm motion will bring locally heavy rainfall to some areas. With less cloud cover and rising thicknesses, high temperatures will warm into the mid/upper 90s inland to near 90 coast. Heat index values will near 105 degrees. .SHORT TERM...Saturday & Sunday... Sat will be the transition day with the hottest temps across NE FL as the mean ridge axis shifts farther south over north Florida and a trough begins to deepen across the eastern CONUS. Drier air with PWAT values only near 1.5 inches will limit rainfall potential across NE Florida, while deeper moisture with PWATs nearing 2 inches filters across SE GA Sat afternoon ahead of the frontal zone. Both sea breezes will develop and drift inland, with convergence between I-75 and Highway 301 in the late afternoon. Saturday high temps will continue to soar into the mid/upper 90s inland to near 90 coast. Sun rain chances increase as the frontal boundary edges a bit farther south and moisture increases from 1.75 to over 2 inch PWATs across the forecast area under WSW steering flow. Best coverage of afternoon convection will focus across SE GA, with more scattered convection across NE FL especially near the St. Johns River basin in the late afternoon where sea breezes/outflows will converge. Temperatures will begin to trend slightly cooler with increase cloud cover with highs in the low/mid 90s. .LONG TERM...Monday through Thursday... An unsettled and generally wet pattern is expected next week as the trough lingers across the Atlantic coast states while the 1000-700 mb ridge axis persists across south-central Florida. This regime will continue prevailing WSW steering flow and generally high moisture content streaming over the forecast area with a dominant west coast sea breeze regime. The GFS started to indicate a deeper mid/upper level trough axis digging southward across the eastern Gulf Wed, with a continuation of high moisture across NE FL and coastal SE GA, but with drier air with PWATs falling below 1.5 inches across our WNW GA zones. For now trended with lower rain chances Wed across inland SE GA, but above normal rain chances increase Thu once again as the trough axis shifts westward as moisture plume lifts back north. Temps will trend near to slightly above normal with highs in the low/mid 90s and muggy overnight conditions with lows in the 70s. && .AVIATION...Easterly flow will focus best chances of afternoon TS at VQQ and GNV with potential MVFR conditions due to rainfall. Stronger wind gusts in tstorms expected today. Coastal locations including SSI, CRG and SGJ will have low chance of afternoon/evening shower, so kept out of 18Z TAFs for now. There is low potential for any restrictions at terminals most terminals tonight except for GNV and VQQ where SREF guidance suggested about 12-305 probabilities of MVFR conditions and 10-20% of LIFR conditions. Given that the SREF performed well yesterday with low stratus across SE GA, suggested this potential in the 18Z TAFs with SCT005 for both GNV and VQQ after 08Z Friday. && .MARINE...Onshore ESE flow expected through Friday with speeds generally 10 kts or less with scattered showers and a low chance of isolated thunderstorms. Combined seas 3-5 ft. Winds will veer more SSW late Friday through early next week as a frontal zone stalls north of the waters. Nocturnal SW winds surges will near 15 kts over the outer waters, while nearshore winds will become onshore with the east coast sea breeze in the afternoon. Thunderstorm activity will increase next week as well with afternoon and evening storms drifting offshore each day. Rip Currents: Moderate risk due to persistent onshore flow and ESE swells with 10-11 second periods. && .PRELIMINARY POINT TEMPS/POPS... AMG 74 96 75 96 / 10 20 10 40 SSI 78 89 77 90 / 10 10 0 20 JAX 75 92 74 95 / 10 20 0 20 SGJ 77 89 76 91 / 10 20 0 10 GNV 74 94 74 95 / 10 30 10 20 OCF 74 93 74 95 / 20 40 10 20 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...None. GA...None. AM...None. && Enyedi/Sandrik/Walker
Hazardous Weather Outlook National Weather Service Jacksonville FL 252 PM EDT Thu Jul 13 2017 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-124-125- GAZ132>136-149>154-162>166-141900- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM- Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM- Hamilton-Suwannee-Columbia-Baker-Inland Nassau-Inland Duval-Union- Bradford-Clay-St. Johns-Gilchrist-Alachua-Putnam-Flagler-Marion- Coastal Nassau-Coastal Duval-Coffee-Jeff Davis-Bacon-Appling- Wayne-Atkinson-Ware-Pierce-Brantley-Inland Glynn-Coastal Glynn- Echols-Clinch-Charlton-Inland Camden-Coastal Camden- 252 PM EDT Thu Jul 13 2017 ...MODERATE RISK OF RIP CURRENTS... This Hazardous Weather Outlook is for Northeast Florida, Southeast Georgia and the Adjacent Coastal Waters. .DAY ONE...This Afternoon and Tonight... Scattered thunderstorms will continue to track west mainly west of Highway 301 this afternoon and toward the Interstate 75 corridor through the early evening. A few strong to severe storms will be capable of producing damaging wind gusts up to 60 mph, excessive lightning and locally heavy rainfall. Storm motion is to the west-northwest around 15 mph. Thunderstorms will track west of I-75 through the early evening with dry conditions expected the rest of the night. Patchy dense fog will be possible across inland areas early Friday morning which could cause local visibilities below a quarter mile. .DAYS TWO THROUGH SEVEN...Friday through Wednesday... Isolated thunderstorms are expected Friday and Saturday, then storms will become more numerous Sunday through Wednesday. Locally heavy rainfall...gusty winds...and frequent lightning will be possible in the strongest thunderstorms. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. 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
341 PM EDT THU JUL 13 2017
GAZ150-163-164-132030-
Ware GA-Clinch GA-Charlton GA-
341 PM EDT THU JUL 13 2017
...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL WARE...NORTHEASTERN
CLINCH AND WESTERN CHARLTON COUNTIES UNTIL 430 PM EDT...
At 341 PM EDT, Doppler radar was tracking a strong thunderstorm 10
miles southeast of Manor, or 12 miles southeast of Argyle, moving
west at 15 mph.
Wind gusts of 45 to 55 mph can be expected along with possible minor
wind damage.
Locations impacted include...
Homerville, Argyle, Cogdell and Manor.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3118 8274 3118 8273 3103 8236 3086 8243
3093 8284
TIME...MOT...LOC 1941Z 108DEG 15KT 3097 8248
STRUBLESpecial Weather Statement
National Weather Service Jacksonville FL
349 PM EDT THU JUL 13 2017
FLZ020-GAZ162-132030-
Hamilton FL-Echols GA-
349 PM EDT THU JUL 13 2017
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HAMILTON AND
SOUTHWESTERN ECHOLS COUNTIES UNTIL 430 PM EDT...
At 348 PM EDT, Doppler radar was tracking a strong thunderstorm over
Jasper, moving west at 15 mph.
Wind gusts of 45 to 55 mph can be expected along with possible minor
wind damage.
Locations impacted include...
Jasper, Jennings, Blue Springs and Crossroads.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3063 8314 3068 8313 3060 8282 3041 8293
3042 8298 3043 8300 3043 8301 3047 8324
3052 8324 3054 8325 3055 8326 3059 8326
3063 8327
TIME...MOT...LOC 1948Z 108DEG 15KT 3050 8300
STRUBLEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
355 PM EDT THU JUL 13 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0350 PM TSTM WND DMG 2 SE LIVE OAK 30.27N 82.96W
07/13/2017 SUWANNEE FL 911 CALL CENTER
SHERIFFS OFFICE REPORTED NUMEROUS CALLS OF TREES DOWN
ACROSS THE COUNTY.
&&
NMCGINNPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
401 PM EDT THU JUL 13 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0318 PM TSTM WND DMG 4 SSE LAKE CITY 30.14N 82.61W
07/13/2017 COLUMBIA FL COUNTY OFFICIAL
PUBLIC WORKS REPORTED TREES AND POWER LINES DOWN NEAR
HANOVER PLACE AND COUNTRY CLUB ROAD.
&&
NMCGINNPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
404 PM EDT THU JUL 13 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0332 PM TSTM WND DMG 1 ENE COLUMBIA 30.08N 82.68W
07/13/2017 COLUMBIA FL COUNTY OFFICIAL
PUBLIC WORKS REPORTED TREES AND POWER LINES DOWN ON
WALTER AVE.
&&
NMCGINNPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
407 PM EDT THU JUL 13 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0258 PM TSTM WND DMG 3 E COLUMBIA 30.07N 82.64W
07/13/2017 COLUMBIA FL COUNTY OFFICIAL
PUBLIC WORKS REPORTED TREE ACROSS THE ROAD NEAR
TUSTENUGGEE AVE AND COUNTY ROAD 240.
&&
NMCGINNThe Moody AFB radar (KVAX), 30 km away, was scanning. The volume nearest the first event began at 20:17 UTC.
1 thunderstorm wind. Local standard time, as filed.
A tree was blown down across Highway 84 in Homerville. The time of damage was based on radar.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Georgia in 2017Every state in 2017This day in weather historyWarnings in Georgia, July 2017
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: 707480.