An upper level ridge dominated over the SE with a surface ridge axis south of the forecast area with a mean layer SW flow in place. A weak surface trough was over south Georgia, and this feature combined with the sea breezes over an unstable and moist airmass produced scattered severe storms during the afternoon and evening.
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.
An upper level ridge dominated over the SE with a surface ridge axis south of the forecast area with a mean layer SW flow in place. A weak surface trough was over south Georgia, and this feature combined with the sea breezes over an unstable and moist airmass produced scattered severe storms during the afternoon and evening.
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 Jun 22, 12:34 PM EST, 1 hour 46 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 134 PM EDT MON JUN 22 2015 .NEAR TERM /THRU TUESDAY/... UPPER RIDGE REMAINS OVER THE SOUTHEAST IN THE NEAR TERM...WITH SURFACE HIGH PRESSURE RIDGE CENTERED JUST S OF FORECAST AREA. HOT TEMPS WITH DWPTS UPR 60S/LWR 70S SUPPORTING CONSIDERABLE INSTABILITY...WITH CAPE VALUES UP TO 3000 J/KG. STILL ANTICIPATE SCATTERED SHOWERS/T-STORMS TO DEVELOP ALONG WEST COAST SEA BREEZE...AND ALONG EAST COAST SEA BREEZE AS IT PRESSES INLAND TOWARD I-95 WITH DECENT MOISTURE CONVERGENCE...W TO SW WINDS MEETING SE WINDS. EFFECT OF LOW-LEVEL DRY AIR PER 12Z JAX SOUNDING SHIFTING EAST OF AREA WITH CUMULUS AND HIGHER SFC DWPTS OVER WRN PARTS OF NASSAU/DUVAL CO'S. TOWARD 00Z...ANTICIPATE SOME DEVELOPMENT OVER WEAK SURFACE TROF OVER SCTRL GA THAT COULD AFFECT OUR NWRN COUNTIES...WHILE SEA BREEZES MERGE BETWEEN HWY 301 AND I-95 WITH POTENTIAL ENHANCEMENT OF T-STORM COVERAGE BY 00Z. ATMOSPHERIC CONDITIONS ARE QUITE FAVORABLE FOR STRONG WET MICROBURSTS FROM TALLER CORES...AS INDICATED BY HIGH FORECAST D-CAPE AND DIFFERENTIAL THETA-E VALUES...WHICH COULD LEAD TO SURFACE OUTFLOW WINDS UP TO 60 MPH. IN THE 00Z-03Z PERIOD...WILL HAVE LIKELY POPS HWY 301 WEST AND NW TO POTENTIAL ACTIVITY AHEAD OF SCTRL GA SURFACE TROF. AFTER 03Z...SHOW GRADUAL DECREASE IN COVERAGE...WITH VERY LITTLE LEFT AFTER 09Z. LOW TEMPS WILL BE IN THE MID 70S INLAND...UPR 70S COAST. FOR TUESDAY...SOME UNCERTAINTY AS TO COVERAGE...BUT WILL CONTINUE CHANCE POPS WITH SEA BREEZES AND SCTRL GA SURFACE TROF. ANOTHER HOT DAY WITH TEMPS IN MID/UPR 90S INLAND...LOW 90S COAST...AFTERNOON HEAT INDEX VALUES SIMILAR TO TODAY WITH 103-107 INLAND...AROUND 100 COAST. .SHORT TERM /WEDNESDAY AND THURSDAY/... A WEAKNESS IN THE SUBTROPICAL RIDGE ALOFT WITH A MOIST SW FLOW WILL CONTINUE TO PRODUCE DAILY SCATTERED CONVECTION. SEABREEZES WILL MERGE LATE AFTERNOON NEAR THE I-95 CORRIDOR. TEMPERATURES WILL REMAIN A FEW DEGREES ABOVE NORMAL WITH POPS NEAR NORMAL. .LONG TERM /FRIDAY THROUGH MONDAY/... PATTERN CHANGES AS UPPER RIDGE ACROSS THE SOUTH WEAKENS NEXT WEEKEND AS AN AMPLIFYING TROUGH DEVELOPS OVER THE EASTERN U.S. A MOIST SW FLOW WILL PERSIST AS A SURFACE TROUGH REMAINS OVER CENTRAL GA. UPPER IMPULSES WILL HELP ENHANCE SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS EACH DAY POSSIBLY EXTENDING INTO THE OVERNIGHT HOURS GIVEN UPPER SUPPORT. TEMPERATURES WILL RETURN TO NEAR NORMAL LEVELS WITH POPS AT OR ABOVE AVERAGE. && .AVIATION...VFR CONDITIONS EXPECTED...EXCEPT LOWER CONDITIONS VICINITY OF TSRA. CONTINUING VCTS IN EASTERN TAF SITES...BUT INCLUDED A TEMPO GROUP 22Z-02Z KVQQ AND KGNV WHERE THERE MAY BE GREATER COVERAGE OF TSRA DURING THAT PERIOD. ALSO INDICATED POTENTIAL FOR STRONG OUTFLOW WINDS WITH STRONGER TSRA. ENVIRONMENT REMAINS VERY FAVORABLE FOR STRONG WET MICROBURSTS FROM TALLER STORMS. ACTIVITY SHOULD DECREASE IN COVERAGE AFTER 02Z AND BE MAINLY W AND NW OF TAF SITES. && .MARINE...SOUTH TO SOUTHWEST FLOW WILL GENERALLY PREVAIL IN THE NIGHTTIME AND MORNING PERIODS WITH SOUTHEASTERLY WINDS EACH AFTERNOON WITH THE SEABREEZE. NOCTURNAL SOUTHERLY SURGES WILL BRING POTENTIAL FOR CAUTION LEVEL WINDS OF 15 TO 20 KNOTS IN THE EVENING PERIODS. RIP CURRENTS: LOW RISK THROUGH TUESDAY. && .PRELIMINARY POINT TEMPS/POPS... AMG 74 96 74 97 / 60 40 20 40 SSI 79 91 78 90 / 40 30 30 30 JAX 75 96 76 95 / 30 30 30 30 SGJ 77 92 75 89 / 30 20 20 30 GNV 73 96 74 95 / 60 40 40 40 OCF 74 95 75 95 / 60 40 40 40 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && WOLF/PETERSON/WALSH
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 518 AM EDT MON JUN 22 2015 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-124-125- GAZ132>136-149>154-162>166-230930- 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- 518 AM EDT MON JUN 22 2015 ...ISOLATED STRONG TO SEVERE STORMS POSSIBLE LATE THIS AFTERNOON INTO THIS EVENING... ...WIDESPREAD HEAT INDICES AROUND 105 DEGREES AGAIN TODAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA... SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT... HOT TEMPERATURES INTO THE 95 TO 100 DEGREE RANGE THIS AFTERNOON WILL PRODUCE WIDESPREAD HEAT INDICES AROUND 105 DEGREES AREA-WIDE. USE EXTRA CAUTION WHEN OUTDOORS IN THE HEAT. THUNDERSTORMS WILL BECOME SCATTERED TO POSSIBLY NUMEROUS LATE THIS AFTERNOON THROUGH THIS EVENING WITH THE HIGHEST CONCENTRATION OF STORMS EXPECTED TO OCCUR GENERALLY BETWEEN HIGHWAY 301 AND THE I-95 CORRIDOR. A FEW SEVERE STORMS WILL BE POSSIBLE WITH GUSTY WINDS AROUND 60 MPH ALONG WITH SMALL HAIL AND FREQUENT LIGHTNING. SLOWER MOVING STORMS WILL PRODUCE LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... HEAT INDEX VALUES NEAR 105 DEGREES EACH AFTERNOON. SCATTERED MAINLY AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED EACH DAY. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE REQUESTED TO SELF-ACTIVATE IF WARNINGS ARE ISSUED FOR THEIR LOCATIONS. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX. JDS
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
317 PM EDT MON JUN 22 2015
FLZ020-221945-
HAMILTON FL-
317 PM EDT MON JUN 22 2015
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HAMILTON COUNTY
UNTIL 345 PM EDT...
AT 317 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
CROSSROADS...OR NEAR JENNINGS...MOVING NORTHEAST AT 5 MPH.
HAIL UP TO NICKEL SIZE IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND
LIGHTNING AND GUSTY WINDS OF 40 TO 50 MPH CAN BE EXPECTED ALONG WITH
POSSIBLE MINOR DAMAGE.
LOCATIONS IMPACTED INCLUDE...
JASPER...JENNINGS AND CROSSROADS.
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 FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 3062 8313 3062 8302 3049 8290 3043 8313
3055 8323
TIME...MOT...LOC 1917Z 233DEG 6KT 3053 8311
NELSONSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
320 PM EDT MON JUN 22 2015
FLZ040-221945-
MARION FL-
320 PM EDT MON JUN 22 2015
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MARION COUNTY UNTIL
345 PM EDT...
AT 319 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
LAKE DELANCY...OR 9 MILES NORTHEAST OF FORT MCCOY. THIS STORM WAS
NEARLY STATIONARY.
HAIL UP TO NICKEL SIZE IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND
LIGHTNING AND GUSTY WINDS OF 40 TO 50 MPH CAN BE EXPECTED ALONG WITH
POSSIBLE MINOR DAMAGE.
LOCATIONS IMPACTED INCLUDE...
FORT MCCOY...LAKE DELANCY AND HOG VALLEY.
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 FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 2934 8210 2943 8210 2943 8207 2944 8207
2944 8206 2947 8206 2950 8201 2950 8184
2949 8184 2949 8178 2943 8178 2943 8175
2934 8174
TIME...MOT...LOC 1919Z 180DEG 2KT 2945 8185
NELSONThe Moody AFB radar (KVAX), 85 km away, was scanning. The volume nearest the first event began at 19:20 UTC.
16 thunderstorm wind, 2 lightning, 2 hail, 1 heavy rain. Local standard time, as filed.
Lightning caused a mobile home fire. The cost of damage was estimated for the event to be included in Storm Data.
Scattered trees were blown across the area. The cost of damage was estimated for the event to be included in Storm Data. The timing of damage was based on radar.
Scattered trees were blown down. The cost of damage was estimated for the event to be included in Storm Data. The time of damage was estimated based on radar.
An observer measured 2 inches of rainfall in 90 minutes.
Highway 138 had trees blown down.
A tree was blown down along County Road 252 near 51st Street. The cost of damage was estimated for the event to be included in Storm Data.
Several trees were blown down along Highway 41 within Genoa.
Lightning caused a structure fire at Wayne Frier Mobile Home Sales at 12788 US Highway 90 West in Live Oak.
Power lines were blown down on the Jacksonville west side.
Power lines were blown down along Lenox Avenue near Cox Road.
A tree fell on a home on Perryman Lane.
Trees were blown down.
Trees and power lines were blown down on Shannon Ave.
A tree was blown down onto a car trapping one person inside. The time of damage was based on radar.
Power lines were blown down at Lem Turner and Trout River Blvd.
Power lines were blown down which caused a storage shed fire.
Trees were blown down into power lines. The time of damage was based on radar.
Trees were significantly damaged by thunderstorm winds east of Keystone Heights. Trees were also blown down into the power lines.
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, June 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: 583451, 583926, 583927, 583445, 583449, 583452, 583472, 583928, 583453, 583459, 583460, 583443, 583458, 583463, 583444, 583455, 583456, 583454, 583462, 583464, 583465.