with the east coast sea breeze pinned near the Atlantic Coast during the afternoon and evening. With dry air in place (PWATs below 2 inches), strong wind gusts were a hazard in resultant thunderstorms over a very unstable air mass.
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.
Deep layer SW flow was in place with morning showers and storms tracking inland across North Florida from the Gulf Coast...with the east coast sea breeze pinned near the Atlantic Coast during the afternoon and evening. With dry air in place (PWATs below 2 inches), strong wind gusts were a hazard in resultant thunderstorms over a very unstable air mass.
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 18, 1:03 PM EST, 57 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 203 PM EDT MON AUG 18 2014 ...VERY HOT AND HUMID WITH AFTERNOON HEAT INDICES AROUND 105 DEGREES THIS WEEK... .NEAR TERM.../THROUGH TONIGHT/... A WESTERLY STEERING FLOW IS USHERING CONVECTION QUICKLY ACROSS NE FL...MAINLY S OF I-10) INTO THE ATLANTIC OCEAN. A LINE OF STORMS HAS BEEN CROSSING THE PANHANDLE SINCE MORNING AND WILL SOON PUSH INTO THE SUWANNEE VALLEY. HAVE SCATTERED POPS (40-50%) FOR NE FL THROUGH THE AFTN...THEN CONVECTION WILL INCREASE ACROSS SE GA AFTER 3 PM. A WEAK SHORTWAVE TROUGH CROSSING SRN ALABAMA WILL EVENTUALLY REACH OUR NRN ZONES LATE AFTN INTO THE EVENING AND HAVE ISOLATED SHOWERS/STORMS UNTIL AROUND MIDNIGHT NORTH OF WAYCROSS. MUGGY OVERNIGHT LOWS IN THE MID 70S ARE EXPECTED AFTER THE RAINS END. LIGHT WINDS WILL PERSIST OVERNIGHT WITH PATCHY LIGHT GROUND FOG OCCURRING WHERE GROUND IS WET FROM HEAVY RAINFALL. .SHORT TERM.../TUESDAY THROUGH THURSDAY/... HIGH PRESSURE TO THE SOUTH WITH SHORT WAVE ENERGY GOING BY TO THE NORTH WILL MAINTAIN A WESTERLY FLOW OVER THE AREA TUESDAY. E-W ORIENTED UPPER RIDGE TO THE SOUTH BUILDS NW WEDNESDAY AND THURSDAY PRODUCING HOT CONDITIONS OVER THE REGION. MAX TEMPERATURES WILL REACH THE MID TO UPPER 90S WITH HEAT INDICES NEAR ADVISORY CRITERIA(108F). EXPECT ISOLATED TO SCATTERED CONVECTION EACH DAY MAINLY ASSOCIATED WITH SEABREEZES. .LONG TERM...FRIDAY THROUGH MONDAY...HIGH PRESSURE ALOFT RETROGRADES SLOWLY WESTWARD INTO THE LOWER MS VALLEY THIS WEEKEND WITH TROUGHING OFF THE EAST COAST. MODELS CONTINUE TO SHOW A BACKDOOR COLD FRONT PUSHING THROUGH THE AREA WITH AN EASTERLY FLOW DEVELOPING FOR SUNDAY AND MONDAY. HOT TEMPERATURES WILL DROP BACK TO NEAR AVERAGE LEVELS BEHIND FRONT WITH POPS AT OR ABOVE AVERAGE THROUGH THE PERIOD. && .AVIATION... SCATTERED STORMS ARE EXPECTED TO END BY 00Z ACROSS NE FL. ONLY ISOLATED STORMS ARE FORECAST FOR SSI...WITH THE ACTIVITY STARTING LATER AND POSSIBLY CONTINUING INTO LATE EVENING. LIGHT SW WINDS OVERNIGHT WILL CONTINUE TONIGHT WITH PATCHY FOG POSSIBLE AT VQQ AND GNV...BUT WILL NOT INCLUDE DUE TO LACK OF CONFIDENCE. && .MARINE... PERSISTENT SW TO WEST FLOW CONTINUES AS A RIDGE OF HIGH PRESSURE BUILDS SOUTH OF THE WATERS. NOCTURNAL SURGE IS EXPECTED ONCE AGAIN OVER OFFSHORE WATERS AND WILL ADD A SMALL CRAFT EXERCISE CAUTION HEADLINE...KEEPING OUTER WATERS SEPARATE FROM NEARSHORE LEGS. SCEC HEADLINES CAN BE EXPECTED EACH NIGHT AS WINDS INCREASE DURING NOCTURNAL SURGES. RIP CURRENTS: LOW RISK THROUGH MID WEEK. && .PRELIMINARY POINT TEMPS/POPS... AMG 75 95 74 98 / 20 40 30 20 SSI 77 90 78 91 / 20 30 30 20 JAX 75 94 76 95 / 20 40 40 30 SGJ 76 92 79 93 / 30 30 30 20 GNV 74 93 73 94 / 10 20 10 20 OCF 74 92 74 94 / 10 20 10 20 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && TRABERT/ZIBURA/GUILLET
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 350 AM EDT MON AUG 18 2014 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040- GAZ132>136-149>154-162>166-190800- 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- 350 AM EDT MON AUG 18 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA... SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT... THERE IS A CHANCE FOR THUNDERSTORMS THROUGH THIS EVENING. HEAT INDEX VALUES WILL APPROACH 105 THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... THERE IS A CHANCE FOR MAINLY AFTERNOON AND EVENING THUNDERSTORMS EACH DAY. HEAT INDEX VALUES WILL APPROACH 105 EACH AFTERNOON. .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 213 PM EDT MON AUG 18 2014 FLZ033-181845- ST. JOHNS- 213 PM EDT MON AUG 18 2014 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR ST. JOHNS COUNTY FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 245 PM EDT... AT 213 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 5 MILES NORTHWEST OF SAINT AUGUSTINE... MOVING EAST AT 20 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND WORLD GOLF VILLAGE...SAINT AUGUSTINE SOUTH...SAINT AUGUSTINE AND VILANO BEACH THROUGH 245 PM EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 35 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 2983 8128 2982 8147 3000 8149 3002 8132 TIME...MOT...LOC 1813Z 263DEG 18KT 2992 8137 ZIBURA
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
233 PM EDT MON AUG 18 2014
FLZ020-021-181915-
HAMILTON-SUWANNEE-
233 PM EDT MON AUG 18 2014
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR HAMILTON AND
SUWANNEE COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID
UNTIL 315 PM EDT...
AT 233 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 4 MILES NORTHWEST OF NEWBURN...MOVING
EAST AT 20 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS
AROUND NEWBURN...SUWANNEE RIVER STATION...WEST LAKE...CROSSROADS...
MCALPIN...LIVE OAK...JASPER...SUWANNEE SPRINGS AND HOUSTON THROUGH
315 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 3060 8285 3011 8281 3014 8323 3027 8324
3037 8318 3062 8327
TIME...MOT...LOC 1833Z 254DEG 16KT 3031 8317
ZIBURAPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
233 PM EDT MON AUG 18 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0225 PM TSTM WND GST 5 NNW ST. AUGUSTINE 29.96N 81.34W
08/18/2014 M51 MPH ST. JOHNS FL ASOS
THE AUTOMATED SURFACE OBSERVING STATION AT THE NORTHEAST
FLORIDA REGIONAL AIRPORT IN SAINT AUGUSTINE RECORDED A
WESTERLY WIND GUST OF 51 MPH AS STRONG THUNDERSTORMS
MOVED ACROSS THE TERMINAL.
&&
NELSONThe Moody AFB radar (KVAX), 67 km away, was scanning. The volume nearest the first event began at 18:59 UTC.
3 thunderstorm wind. Local standard time, as filed.
Power lines were blown down in Live Oak. The time of damage was based on radar.
Trees were blown down near Artesian Road.
A tree was blown down onto a car and power line along Southside Blvd at the intersection of Hogan Rd. All lanes of Southside were closed due to the power line across the roadway. There were two injuries. 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, August 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: 537890, 537891, 537893.