A moist airmass fueled slow moving sea breeze storms.
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 moist airmass fueled slow moving sea breeze 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 17, 1:52 PM EST, 1 hour 53 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 252 PM EDT FRI JUL 17 2015 .NEAR TERM /THROUGH SATURDAY NIGHT/... SCATTERED SHOWERS/TSTMS ARE DEVELOPING EARLY THIS AFTERNOON...WITH THE GREATEST COVERAGE ACROSS NORTH-CENTRAL FLORIDA. COVERAGE OF CONVECTION WILL INCREASE OVER THE NEXT COUPLE OF HOURS...WITH MAX POPS OF HIGH END SCATTERED TO NUMEROUS OVER INLAND NE FL...WITH LESSER POPS FURTHER NORTH. SHWRS/TSTMS NEAR THE COAST CURRENTLY WILL DECREASE IN COVERAGE LATER THIS AFTN AS THE ATLANTIC SEABREEZE MOVES INLAND. RESIDUAL CONVECTION EARLY THIS EVENING WILL DECREASE BY LATE EVENING...WITH LOWS IN THE LOWER/MID 70S. SATURDAY/SATURDAY NIGHT...LARGE SCALE RIDGING TO THE WEST OF THE REGION WILL NOSE A BIT FURTHER EAST OVER SE GA. THIS WILL RESULT IN LOWER COVERAGE OF SHWRS/TSTMS FOR MOST OF SE GA...AND WILL USE ISOLATED TO WIDELY SCATTERED POPS THERE. FURTHER SOUTH...SEABREEZE INTERACTIONS ALONG WITH A DEEPER MOISTURE PROFILE WILL RESULT IN ANOTHER ROUND OF SCATTERED TO NUMEROUS SHWRS/TSTMS FOR NE FL. ANOTHER HOT DAY IN STORE...WITH INLAND HIGHS IN THE LOWER/MID 90S. LOWS SATURDAY NIGHT WILL BE SIMILAR TO TONIGHT. .SHORT TERM /SUNDAY AND MONDAY/...MID LEVEL TROUGH WILL SWING OVER THE NORTHEASTERN US ON SUNDAY AND MONDAY NUDGING RIDGE OVER SOUTHERN US SLIGHTLY WESTWARD AS SFC TROUGH BUILDS DOWN THE ATLANTIC COAST. THIS LOW WILL ENTER THE AREA SUNDAY AFTERNOON WITH SCATTERED CONVECTIVE COVERAGE EXPECTED AS SEA BREEZES AND DIURNAL HEATING ALL WORK TO TRIGGER STORMS AREA WIDE. WEAK SOUTHWESTERLY FLOW WILL FACILITATE GULF COAST SEA BREEZE CONVERGING WITH EAST COAST SEA BREEZE NEAR INTERSTATE 95 ON SUNDAY. ON MONDAY...LOW NOW PRESENT ACROSS THE ENTIRE AREA WILL SEE AN EARLIER START TO SHOWERS AND ISOLATED STORMS ESPECIALLY OVER OUR WESTERN AREAS AND NEAR THE GULF COAST THROUGH MID MORNING. PRECIP CHANCES WILL THEN SPREAD EASTWARD AND INCREASE IN COVERAGE LATE IN THE MORNING AND INTO THE AFTERNOON AS INCREASED SOUTHWESTERLY FLOW PINS EAST COAST SEA BREEZE TO THE COAST. ELEVATED HEAT INDICES ARE EXPECTED SUNDAY AND MONDAY IN THE 101-107 DEGREE RANGE...WITH HIGHEST VALUES EXPECTED OVER INTERIOR SE GA. LOW TEMPS WILL BE IN THE MID 70S. .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...WEAK MID LEVEL RIDGE WILL CONTINUE TO EXTEND OVER THE SOUTHERN US FOR THE LONG TERM PERIOD AS SFC TROUGH OVER MIDATLANTIC AND ASSOCIATED FRONTAL BOUNDARY REMAIN MOSTLY STATIONARY EXTENDING OVER THE VIRGINIAS AND OHIO RIVER VALLEY THROUGH TUESDAY NIGHT WHEN IT WILL DRIFT SOUTHWARD INTO THE CAROLINAS/GA/AL REGION THROUGH THURSDAY NIGHT. AS AFOREMENTIONED SFC LOW STRENGTHENS OVER THE MID ATLANTIC GRADIENT BETWEEN IT AND SFC HIGH OVER THE ATLANTIC WILL TIGHTEN INCREASING SOUTHWESTERLY FLOW TUESDAY AND WEDNESDAY. THIS MOIST SOUTHWESTERLY FLOW IN ADDITION TO THE VICINITY TROUGH AND SEA BREEZE INTERACTION WITH ALLOW SCATTERED SHOWERS AND THUNDERSTORMS TO DEVELOP EACH AFTERNOON AREA WIDE AS BOUNDARY LAYER HEATS UP. CONTINUED MAX TEMPS IN THE LOW/MID 90S WITH MIN TEMPS HITTING THE MID 70S. && .AVIATION... VFR WILL GENERALLY PREVAIL FOR THE NEXT 24 HOURS. WILL KEEP VCTS FOR MOST SITES THIS AFTN WITH SCATTERED TSTM COVERAGE...EXCEPT FOR GNV WHERE A TEMPO GROUP WILL BE USED WITH A BIT HIGHER COVERAGE. && .MARINE... SOUTH TO SOUTHWEST FLOW WILL PREVAIL THROUGH THE MIDDLE OF NEXT WEEK...WITH DAILY SEABREEZES NEARSHORE. WIND SPEEDS AND SEAS WILL REMAIN UNDER CAUTION CRITERIA. RIP CURRENTS: LOW RISK THROUGH SATURDAY WITH WEAK FLOW REGIME. && .PRELIMINARY POINT TEMPS/POPS... AMG 73 97 74 97 / 20 20 10 40 SSI 77 86 78 90 / 10 10 10 30 JAX 75 92 74 95 / 10 30 10 40 SGJ 76 87 75 90 / 20 30 10 30 GNV 74 92 73 94 / 40 50 30 40 OCF 74 91 74 92 / 40 50 40 40 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && ALLEN/GUILLET
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 402 AM EDT FRI JUL 17 2015 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-124-125- GAZ132>136-149>154-162>166-181000- 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- 402 AM EDT FRI JUL 17 2015 ...HEAT INDEX VALUES OF 104 TO 108 DEGREES THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA...SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT... HIGH TEMPERATURES OVER INLAND LOCATIONS WILL RISE INTO THE MID TO UPPER 90S...WITH MAXIMUM HEAT INDEX READINGS OF 104 TO 108. SCATTERED TO NUMEROUS MAINLY AFTERNOON AND EARLY EVENING THUNDERSTORMS ARE EXPECTED TODAY...MORE NUMEROUS OVER INLAND NORTHEAST FLORIDA. THE STRONGER STORMS WILL BE INLAND AND CAPABLE OF PRODUCING GUSTY WINDS...FREQUENT LIGHTNING AND LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY... SCATTERED TO NUMEROUS MAINLY AFTERNOON AND EARLY EVENING THUNDERSTORMS ARE EXPECTED EACH DAY. THE STRONGER STORMS WILL BE CAPABLE OF PRODUCING GUSTY WINDS...FREQUENT LIGHTNING AND LOCALLY HEAVY RAINFALL. HOT AND HUMID CONDITIONS WILL CONTINUE EACH DAY WITH HEAT INDICES REACHING NEAR 105 DEGREES. .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 340 PM EDT FRI JUL 17 2015 FLZ032-033-037-172015- CLAY FL-ST. JOHNS FL-PUTNAM FL- 340 PM EDT FRI JUL 17 2015 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEAST PUTNAM... SOUTHEASTERN CLAY AND WEST CENTRAL ST. JOHNS COUNTIES UNTIL 415 PM EDT... AT 339 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER PICOLATA...OR 8 MILES SOUTHEAST OF GREEN COVE SPRINGS...MOVING WEST AT 10 MPH. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. LOCATIONS IMPACTED INCLUDE... GREEN COVE SPRINGS...PICOLATA...PENNEY FARMS AND BAKERSVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO STREET AND POOR DRAINAGE FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 2979 8151 2977 8183 3004 8180 2997 8148 TIME...MOT...LOC 1939Z 095DEG 8KT 2989 8159 HESS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 359 PM EDT FRI JUL 17 2015 FLZ032-037-172030- CLAY FL-PUTNAM FL- 359 PM EDT FRI JUL 17 2015 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PUTNAM AND SOUTHWESTERN CLAY COUNTIES UNTIL 430 PM EDT... AT 359 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR GEORGE'S LAKE...OR 13 MILES SOUTHWEST OF GREEN COVE SPRINGS...MOVING WEST AT 10 MPH. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. LOCATIONS IMPACTED INCLUDE... KEYSTONE HEIGHTS...LAKE GENEVA...FLORAHOME...GEORGE'S LAKE AND PUTNAM HALL. PRECAUTIONARY/PREPAREDNESS ACTIONS... REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO STREET AND POOR DRAINAGE FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 2992 8175 2973 8173 2967 8204 2993 8204 TIME...MOT...LOC 1959Z 083DEG 7KT 2983 8181 HESS
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
412 PM EDT FRI JUL 17 2015
FLZ036-172045-
ALACHUA FL-
412 PM EDT FRI JUL 17 2015
...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL ALACHUA COUNTY
UNTIL 445 PM EDT...
AT 411 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 8
MILES SOUTHWEST OF SAMPSON...OR 10 MILES NORTH OF GAINESVILLE...
MOVING WEST AT 5 MPH.
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH
CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.
LOCATIONS IMPACTED INCLUDE...
GAINESVILLE...ALACHUA AND LA CROSSE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO STREET AND POOR DRAINAGE FLOODING. DO NOT DRIVE YOUR VEHICLE
THROUGH FLOODED ROADWAYS.
&&
LAT...LON 2990 8251 2991 8241 2989 8240 2988 8239
2988 8234 2984 8228 2985 8225 2975 8219
2970 8244
TIME...MOT...LOC 2011Z 072DEG 6KT 2982 8230
HESSSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
415 PM EDT FRI JUL 17 2015
FLZ037-172045-
PUTNAM FL-
415 PM EDT FRI JUL 17 2015
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PUTNAM COUNTY UNTIL
445 PM EDT...
AT 414 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
CRESCENT CITY...MOVING NORTHWEST AT 5 MPH.
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH
CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.
LOCATIONS IMPACTED INCLUDE...
CRESCENT CITY...POMONA PARK...FRUITLAND...GEORGETOWN AND LAKE COMO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO STREET AND POOR DRAINAGE FLOODING. DO NOT DRIVE YOUR VEHICLE
THROUGH FLOODED ROADWAYS.
&&
LAT...LON 2938 8145 2932 8168 2934 8168 2934 8166
2937 8167 2937 8168 2957 8158 2953 8152
2949 8152 2945 8149 2940 8148 2940 8144
TIME...MOT...LOC 2014Z 115DEG 6KT 2939 8149
HESSSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 429 PM EDT FRI JUL 17 2015 FLZ032-037-172100- CLAY FL-PUTNAM FL- 429 PM EDT FRI JUL 17 2015 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PUTNAM AND SOUTHWESTERN CLAY COUNTIES UNTIL 500 PM EDT... AT 428 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER GEORGE'S LAKE...OR 9 MILES EAST OF KEYSTONE HEIGHTS...MOVING WEST AT 10 MPH. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. LOCATIONS IMPACTED INCLUDE... KEYSTONE HEIGHTS...MELROSE...LAKE GENEVA...FLORAHOME...GEORGE'S LAKE AND PUTNAM HALL. PRECAUTIONARY/PREPAREDNESS ACTIONS... REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO HIGHWAY...STREET AND POOR DRAINAGE FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 2974 8173 2968 8205 2996 8205 2991 8177 TIME...MOT...LOC 2028Z 069DEG 10KT 2980 8188 HESS
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
434 PM EDT FRI JUL 17 2015
FLZ031-036-172100-
ALACHUA FL-BRADFORD FL-
434 PM EDT FRI JUL 17 2015
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN BRADFORD AND
NORTHEASTERN ALACHUA COUNTIES UNTIL 500 PM EDT...
AT 433 PM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR STARKE TO MELROSE...
AND MOVING WEST AT 10 MPH.
EXCESSIVE CLOUD TO GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH
CAN BE EXPECTED ALONG WITH POSSIBLE MINOR WIND DAMAGE.
LOCATIONS IMPACTED INCLUDE...
GAINESVILLE...STARKE...KEYSTONE HEIGHTS...NEW RIVER...GAINESVILLE
AIRPORT...SAMPSON...ORANGE HEIGHTS...WALDO AND HAMPTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO POOR DRAINAGE FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH
FLOODED ROADWAYS.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
&&
LAT...LON 2967 8229 2998 8229 2997 8205 2973 8205
2966 8206
TIME...MOT...LOC 2033Z 082DEG 8KT 2990 8205 2972 8206
HESSThe Jacksonville radar (KJAX), 110 km away, was scanning. The volume nearest the first event began at 20:43 UTC.
1 thunderstorm wind. Local standard time, as filed.
A tree was blown down onto a porch on NE 20th Street. The cost of damage was unknown but estimated for Storm Data inclusion.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2015Every state in 2015This day in weather historyWarnings in Florida, July 2015
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: 595833.