Mean layer troughing was over the forecast area, as well as mid level dry air. A short wave trough traversed NE Florida in the afternoon, and this features combined with the forcing from the sea breezes and diurnal instability produced a few severe storms that produced gusty winds over NE Florida.
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.
Mean layer troughing was over the forecast area, as well as mid level dry air. A short wave trough traversed NE Florida in the afternoon, and this features combined with the forcing from the sea breezes and diurnal instability produced a few severe storms that produced gusty winds over NE Florida.
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 18, 2:16 PM EST, 3 hours 54 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 316 PM EDT THU SEP 18 2014 ...UNSETTLED WET PATTERN FRI INTO SAT... .SHORT TERM /THROUGH SUNDAY/... THIS AFTERNOON AND TONIGHT... SYNOPSIS...BOTH SEA BREEZES WERE STARTING TO EDGE INLAND OVER NE FL EARLY THIS AFTERNOON WHILE THE PERSISTENT STRATUS DECK NEAR THE ALTAMAHA RIVER BASIN WAS FINALLY BREAKING UP AND LIFTING INTO A CUMULUS DECK. UPSTREAM A TROUGH WAS CARVING SOUTHWARD OVER THE MID MS RIVER BASIN...WITH ENERGY FROM THE MONSOON OVER NM/TX EXPECTED TO FILL THE BASE OF THIS TROUGH AS IT DEEPENS OVER THE DEEP SOUTH OVER THE NEXT 24 HRS. FOR NOW...JUST HIGH DEBRIS CLOUDS WERE IMPACTING THE AREA FROM THIS DEVELOPING SYSTEM. A FRONTAL ZONE LINGERED OVER THE FL STRAITS...WITH A BROAD LOW LEVEL LOW ACROSS THE LOCAL FORECAST AREA. SURFACE HIGH PRESSURE WAS BUILDING SOUTHWARD FROM THE GREAT LAKES REGION...WITH A RIDGE AXIS NOSING SOUTHWARD DOWN THE LEE OF THE APPALACHIANS. TEMPERATURES RANGED FROM NEAR 90 OVER THE SUWANNEE RIVER VALLEY TO THE MID/UPPER 80S EASTWARD. HAZLEHURST WAS JUST STARTING TO WARM INTO THE UPPER 70S AS THE STRATUS DECK ERODED. FOR THE REST OF THIS AFTN AND EVENING...HIGH CLOUDS WILL CONTINUE TO THICKEN OVERHEAD AS THE UPPER TROUGH APPROACHES FROM THE NW AND FUNNELS UPPER LEVEL MOISTURE FROM THE GULF OVER THE AREA. WITH DRY AIR STILL NOTED IN THE MID LEVELS...CONVECTION WILL BE BELOW CLIMO VALUES WITH FORCING FROM THE SEA BREEZES AND ANY SHALLOW ENERGY ASSOCIATED WITH THE THE BROAD SFC LOW OVER THE REGION BEING THE MAIN CONVECTIVE TRIGGERS. THE BEST CONVERGENCE AND MOISTURE WILL FOCUS ACROSS NE FL BETWEEN I-95 AND I-75 THIS AFTN AND EVENING...AS WELL AS ALONG THE SE GA COAST. FARTHER NW...BELIEVE TOO MUCH DRY AIR AND SUBSIDENCE WAS IN PLACE OVER INLAND SE GA TO SUPPORT MUCH CONVECTION. RAIN CHANCES THIS AFTN RANGED FROM 30-40% FOR THE SOUTHERN ST JOHNS RIVER BASIN TO ONLY 20-30% FOR THE SE GA COAST...TO LESS THAN 14% TOWARD DOUGLAS AND HOMERVILLE. MAIN CONVECTIVE CONCERN WILL BE GUSTY WINDS AND LIGHTNING. PRECIP WILL FADE INLAND WITHIN A FEW HOURS AFTER SUNSET...WHILE WINDS BEGIN TO BACK FROM SE OVER THE WATERS TO ENE AFTER MIDNIGHT WITH COASTAL COASTAL AND ISOLATED THUNDERSTORMS POSSIBLE. PATCHY FOG WILL BE POSSIBLE INLAND...BUT INCREASED HIGH AND MID CLOUDS WILL PREVENT WIDESPREAD AND PERSISTENT SIGNIFICANT FOG FORMATION. LEANED A TAD WARMER FOR TEMPS WITH HIGH CLOUDS PRESENT TONIGHT WITH MINS NEAR 70/LOW 70S INLAND TO MID 70S RIVER BASIN/COAST. FRIDAY...AN IMPRESSIVE UPPER DISTURBANCE WILL MOVE INTO THE REGION ON FRIDAY AND THIS WILL USHER IN A SURGE OF MID TO UPPER LEVEL MOISTURE (WITH PACIFIC ORIGINS). ONSHORE LOW LEVEL FLOW WILL ALSO BEGIN TO ESTABLISH ITSELF WHICH WILL BRING IN A FLUX OF LOW LEVEL MOISTURE OFF OF THE ATLANTIC. THIS PATTERN WILL BE FAVORABLE FOR SCATTERED TO NUMEROUS SHOWERS AND STORMS. THE NAM IS RATHER CONCERNING WITH ITS DEPICTION OF STEEP LOW TO MID LEVEL LAPSE RATES AND RATHER LARGE CAPE VALUES (EVEN WITH AN INITIAL PARTIAL IN THE LOWER 80S). THE GFS IS NOT NEARLY AS ROBUST BUT THERE IS AT LEAST SOME POTENTIAL FOR A FEW STRONG TO POSSIBLY SEVERE STORMS WITH LOCALLY HEAVY RAINFALL AND STRONG GUSTY WINDS. THIS THREAT WILL LARGELY DEPEND ON HOW MUCH HEATING WE ULTIMATELY GET. HAVE LEANED ON THE WARMER NAM GUIDANCE AND SHOWN HIGHS PRIMARILY IN THE MID 80S. WITH DEEP LAYER CYCLONIC FLOW AND MID LEVEL TROUGH CLOSING OFF OVER THE REGION THE FORECAST DETAILS FOR THE NEXT COUPLE OF DAYS WILL BE CHALLENGING. THERE WILL BE A CHANCE FOR COASTAL SHOWERS AND ISOLATED EMBEDDED LIGHTNING STRIKES FRIDAY NIGHT AND ESPECIALLY SATURDAY AS A SURFACE LOW DEVELOPS JUST NORTH OF THE BAHAMAS. THIS LOW WILL MOVE NORTH AND ONSHORE WINDS WILL BECOME GUSTY AT TIMES ALONG THE COAST (PARTICULARLY IN SE GA) WITH SCATTERED TO NUMEROUS SHOWERS AND ISOLATED STORMS ON SATURDAY WITH THE HIGHEST CHANCES EXPECTED EAST OF HIGHWAY 301. MOSTLY CLOUDY SKIES AND ONSHORE FLOW PATTERN WILL HOLD TEMPS DOWN IN THE LOWER 80S FOR MOST LOCATIONS...ALTHOUGH A FEW MID 80S WILL BE ATTAINABLE ACROSS PORTIONS OF INTERIOR NE FL. COASTAL SHOWER THREAT WILL CONTINUE SATURDAY NIGHT AS THE LOW PASSES TO OUR EAST. THE SURFACE LOW WILL MOVE NORTHEAST OF THE AREA ON SUNDAY AND A TRAILING TROUGH/FRONTAL BOUNDARY WILL EXTEND BACK OVER A PORTION OF THE AREA. MODELS DISAGREE ON EXACTLY WHERE THIS BOUNDARY WILL SET UP BUT IT WILL LIKELY BE SOMEWHERE OVER NE FL. THIS FEATURE WILL HELP TO PRODUCE SOME SCATTERED SHOWERS AND THIS POTENTIAL AGAIN WILL BE PRIMARILY CONFINED TO NE FLORIDA. TEMPS ON SUNDAY WILL ALSO BE DEPENDENT ON THE LOCATION OF THE FRONT BUT FOR NOW WE WILL SHOW HIGHS IN THE MID 80S. IF ANYTHING THIS MAY BE A TAD TOO HIGH. .LONG TERM /MONDAY THROUGH THURSDAY/... TROUGHING PATTERN WILL BECOME MUCH LESS AMPLIFIED AND EVENTUALLY GET REPLACED BY HIGH PRESSURE RIDGING EARLY NEXT WEEK. RAIN CHANCES WILL INITIALLY DECREASE WITH SEASONABLE TEMPS EXPECTED. THE MODELS ARE ALSO IN REASONABLE AGREEMENT SHOWING A FAIRLY IMPRESSIVE HIGH PRESSURE WEDGE PATTERN NEXT THURSDAY WITH STRONG ONSHORE FLOW AND INCREASING RAIN CHANCES ALONG THE COAST. && .AVIATION...PREVAILING VFR CONDITIONS ARE EXPECTED AT THE TERMINALS THIS AFTN AND EVENING WITH CUMULUS FIELDS BETWEEN 3-4 KFT. TEMPO MVFR DUE TO CIGS IS POSSIBLE IN AFTN SHOWERS AND ISOLATED TSTORM ACTIVITY...AND WILL ADD TEMPO GROUPS BASED ON NEAR TERM RADAR TRENDS IF NEEDED. AFTER PRECIP FADES THIS EVENING...INCREASING HIGH CLOUDS WILL LIKELY PRECLUDE SIGNIFICANT FOG FORMATION. BASED ON PERSISTENCE...CONTINUED WITH MVFR CONDITIONS AT GNV AND VQQ AROUND 08Z FRIDAY. ONSHORE FLOW FRI WILL BRING COASTAL SHOWERS AND ISOLATED TSTORMS INLAND THROUGH THE DAY. && .MARINE...LIGHT ESE FLOW 10 KTS OR LESS THIS EVENING WILL BACK ENE AFTER MIDNIGHT. COMBINED SEAS OF 2-4 FT WILL CONTINUE WITH A GRADUAL LOWERING OF SWELLS WHICH WERE 2-3 FT THIS AFTN. FRI NIGHT NE FLOW WILL INCREASE ESPECIALLY OVER THE GA WATERS AS SURFACE LOW PRESSURE DEEPENS OFFSHORE OF THE FL ATLANTIC COAST. WINDS MAY NEAR EXERCISE CAUTION LEVELS IN THE 15-20 KT RANGE AT LEAST OVER THE GA WATERS WITH SEAS BUILDING UP TO 5 FT OFFSHORE. A TIGHT NNE FLOW WILL CONTINUE SAT THROUGH EARLY SUN OVER THE GA WATERS...THEN A GRADUAL RELAXATION OF WINDS EARLY NEXT WEEK AS YET ANOTHER SURFACE TROUGH MEANDERS OVER THE DEEP SOUTH. RIP CURRENTS: MODERATE RISK TODAY AND FRIDAY DUE TO LINGERING LONG PERIOD EAST SWELLS OF 2-3 FT AND 12-14 SECOND PERIODS. ONSHORE FLOW WILL BEGIN TO INCREASE FRIDAY EVENING WITH A MODERATE RISK OF RIP CURRENTS EXPECTED FOR AT LEAST THE GA COASTLINE INTO THE WEEKEND. && .PRELIMINARY POINT TEMPS/POPS... AMG 70 86 67 81 / 20 50 40 40 SSI 73 82 71 79 / 20 60 60 60 JAX 71 85 69 80 / 20 60 50 60 SGJ 73 83 71 82 / 20 60 50 60 GNV 70 84 66 84 / 30 70 40 50 OCF 71 84 66 85 / 30 70 50 60 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && SHULER/ENYEDI/WALSH
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 225 PM EDT THU SEP 18 2014 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040- GAZ132>136-149>154-162>166-191000- 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- 225 PM EDT THU SEP 18 2014 ...MODERATE RISK OF RIP CURRENTS THROUGH AT LEAST FRIDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA...SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT... ISOLATED TO WIDELY SCATTERED THUNDERSTORMS WILL PREVAIL THIS AFTERNOON. A FEW STORMS WILL BE CAPABLE OF PRODUCING GUSTY WINDS. A MODERATE RISK OF RIP CURRENTS WILL PREVAIL DUE TO LINGERING EAST SWELLS AND INCREASED ONSHORE FLOW. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH THURSDAY... ISOLATED TO SCATTERED THUNDERSTORMS CAN BE EXPECTED EACH AFTERNOON THROUGH THE FIRST HALF OF NEXT WEEK. A MODERATE RISK OF RIP CURRENTS CAN BE EXPECTED THROUGH AT LEAST FRIDAY DUE TO LINGERING EAST SWELLS AND ONSHORE FLOW. .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 651 PM EDT THU SEP 18 2014 FLZ037-182315- PUTNAM- 651 PM EDT THU SEP 18 2014 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR PUTNAM COUNTY FOR STRONG WINDS AND SMALL HAIL VALID UNTIL 715 PM EDT... AT 651 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 3 MILES NORTHEAST OF HOLLISTER...MOVING SOUTH AT 10 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND PALATKA...CARRAWAY...MANNVILLE...HOLLISTER AND SATSUMA THROUGH 715 PM EDT. FREQUENT LIGHTNING...SMALL HAIL AND GUSTY WINDS OF NEAR 45 MPH CAN BE EXPECTED. REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. LAT...LON 2951 8161 2953 8189 2970 8188 2973 8161 TIME...MOT...LOC 2251Z 358DEG 7KT 2964 8177 SHASHY
SPECIAL WEATHER STATEMENT...UPDATED NATIONAL WEATHER SERVICE JACKSONVILLE FL 657 PM EDT THU SEP 18 2014 FLZ037-182315- PUTNAM- 657 PM EDT THU SEP 18 2014 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR PUTNAM COUNTY FOR STRONG WINDS...EXCESSIVE LIGHTNING...AND SMALL HAIL VALID UNTIL 715 PM EDT... AT 657 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 3 MILES NORTHEAST OF HOLLISTER...MOVING SOUTH AT 10 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND PALATKA...CARRAWAY...MANNVILLE...HOLLISTER AND SATSUMA THROUGH 715 PM EDT. EXCESSIVE LIGHTNING...SMALL HAIL AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED. REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. LAT...LON 2951 8161 2953 8189 2970 8188 2973 8161 TIME...MOT...LOC 2251Z 358DEG 7KT 2964 8177 SHASHY
The Jacksonville radar (KJAX), 96 km away, was scanning. The volume nearest the first event began at 23:08 UTC.
3 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds snapped trees and caused large limbs to fall. The time of damage was based on radar.
Tree limbs were snapped due to thunderstorms winds.
Power lines were blown down in Fort McCoy. 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 2014Every state in 2014This day in weather historyWarnings in Florida, September 2014
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: 539410, 539411, 539409.