An upper level trough of low pressure over the Atlantic along with a tropical wave over the western Caribbean Sea caused scattered afternoon thunderstorms across South 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 MFL wrote it up.
An upper level trough of low pressure over the Atlantic along with a tropical wave over the western Caribbean Sea caused scattered afternoon thunderstorms across South 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 Miami, FL wrote its last area forecast discussion before the first event at Sep 6, 12:41 PM EST, 19 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIAMI FL 141 PM EDT SAT SEP 6 2014 .AVIATION... HEAVY SHOWERS AND STORMS THAT CONTINUE TO IMPACT PORTIONS OF THE EAST COAST HAVE BEGUN TO WEAKEN AND THAT TREND SHOULD CONTINUE THROUGH THE FIRST FEW HOURS OF THE TAF PERIOD THIS AFTERNOON. THE BULK OF THE LATE AFTERNOON AND EARLY EVENING ACTIVITY SHOULD SHIFT INLAND AND TOWARD THE GULF COAST OR SITE APF AS THE OUTFLOW BOUNDARIES FROM THE EARLIER EAST COAST ACTIVITY MERGES WITH THE GULF COAST SEA BREEZE. HOWEVER...WILL CONTINUE TO INCLUDE VCSH FOR THE EAST COAST SITES THROUGH THE REMAINDER OF THE DAY. WINDS WILL REMAIN OUT OF THE ESE WITH THE EXCEPTION OF THE GULF COAST SEA BREEZE OR ANY OUTFLOW BOUNDARIES ASSOCIATED WITH CONVECTION THROUGH THE AFTERNOON PERIODS. SIMILAR CONDITIONS ARE EXPECTED THROUGH THE DAY SUNDAY. /85 && .PREV DISCUSSION... /ISSUED 1020 AM EDT SAT SEP 6 2014/ UPDATE... A SURFACE TROUGH REMAINED ACROSS SOUTHEAST GEORGIA...WITH MID/UPPER LEVEL VORT OVER NORTHEAST FLORIDA. SURFACE RIDGE AXIS WAS ACROSS CENTRAL FLORIDA...PROVIDING EASTER FLOW ACROSS THE REGION. SCATTERED SHOWERS AND ISOLATED STORMS WERE ONGOING ACROSS THE EAST COAST METRO AREAS THIS MORNING. THE 12Z SOUNDING SHOWED MOIST CONDITIONS WITH PWAT REMAINING AROUND 2 INCHES. WARMER TEMPS WERE NOTED AROUND 700MB...AND 500MB TEMPS REMAINED AROUND -8C. SO THE RESULT IS STEEP 700-500MB LAPSE RATES OF 7.0 C/KM...AND STRONG TO ISOLATED SEVERE DOWNBURST WINDS ARE POSSIBLE ACROSS THE INTERIOR AND TOWARD THE GULF COAST THIS AFTERNOON. SMALL HAIL IS ALSO POSSIBLE. MOVED THE HIGHEST POPS FOR THE EAST COAST TO THE MORNING AND EARLY AFTERNOON HOURS...AND CUT BACK POPS AFTERWARD FOR THE EAST COAST DUE TO THE EAST COAST SEA BREEZE PUSHING INLAND. OTHERWISE...NUMEROUS SHOWERS AND STORMS ARE EXPECTED ACROSS THE INTERIOR AND GULF COAST THIS AFTERNOON. PREV DISCUSSION... /ISSUED 844 AM EDT SAT SEP 6 2014/ AVIATION... VFR CONDITIONS ARE EXPECTED TO CONTINUE THROUGH THE MAJORITY OF THE 24 HR TAF PERIOD WITH LIGHT TO MODERATE SOUTHEAST WINDS CONTINUING. THE BEST CHANCE FOR SHOWERS/TSTMS ALONG THE EAST COAST WILL CONTINUE THROUGH THE MORNING HOURS BEFORE SHIFTING INLAND ACROSS THE INTERIOR AND GULF AREAS THIS AFTERNOON/EARLY EVENING. WESTERLY WINDS ASSOCIATED WITH THE GULF COAST SEA BREEZE WILL BE POSSIBLE THROUGH THE AFTERNOON HOURS AT SITE APF...WHICH SHOULD KEEP THE BULK OF THE AFTERNOON SHRA/TSTM ACTIVITY JUST INLAND. /85 PREV DISCUSSION... /ISSUED 345 AM EDT SAT SEP 6 2014/ DISCUSSION... ONE OF THE MAJOR SYNOPTIC FEATURES ACROSS THE REGION INCLUDE A SURFACE TROUGH JUST TO THE NORTH OF NORTH FLORIDA AND A TRAILING WEAK TROUGH EXTENDING SOUTHWARD INTO THE GULF WATERS JUST WEST OF FLORIDA. RECENT WATER VAPOR IMAGERY AND THE LATEST GUIDANCE ALSO INDICATE A LARGE AMPLITUDE MID TO UPPER LEVEL TROUGH OFF THE SOUTHEAST U.S. ATLANTIC COAST AND EXTENDING SOUTHWARD TO THE BAHAMAS ISLANDS. ADDITIONAL SYNOPTIC FEATURES INCLUDE A TROPICAL WAVE APPROXIMATELY SOUTH OF THE WEST COAST OF CUBA AND ANOTHER TROPICAL WAVE IN THE VICINITY OF HISPANIOLA WITH RECENT SATELLITE IMAGERY INDICATING VERY ACTIVE CONVECTION AND WIDESPREAD THUNDERSTORMS IN THE VICINITY OF CUBA. THE COMBINATION OF ALL THESE SYNOPTIC FEATURES WILL RESULT IN SHOWERS AND THUNDERSTORMS ACROSS THE REGION OVER THE WEEKEND WITH THE MOST ACTIVITY EXPECTED ACROSS THE INTERIOR SOUTH FLORIDA PENINSULA DURING THE AFTERNOON AND EVENING HOURS. TODAY THE COMBINATION OF THE NORTHERN PERIPHERY OF THE TROPICAL WAVE SOUTH OF CUBA AND THE UPPER LEVEL LOW COULD RESULT IN SCATTERED SHOWERS AND THUNDERSTORMS ACROSS THE ATLANTIC AND GULF WATERS AND IS INDICATED IN THE FORECAST. THE LATEST GUIDANCE INDICATES THAT 500 HPA TEMPERATURES COULD REACH AROUND -9 CELSIUS WHICH IS WELL BELOW CLIMATOLOGY AND MAY ALLOW FOR THE POTENTIAL FOR A FEW STRONG THUNDERSTORMS TODAY. FOR SUNDAY...VERY SIMILAR CONDITIONS ARE EXPECTED TO PREVAIL...I.E. LINGERING DEEP MOISTURE AND THE UPPER LEVEL LOW REMAINING NEARLY STATIONARY AND WILL ALSO RESULT IN ACTIVE AFTERNOON AND EVENING CONVECTION WITH A FEW STRONG THUNDERSTORMS POSSIBLE ON SUNDAY AFTERNOON AND EVENING. THE EXTENDED GUIDANCE CONTINUES TO INDICATE THAT THE UPPER LEVEL LOW COULD LINGER IN THE VICINITY OF THE BAHAMAS INTO THE EARLY PART OF NEXT WEEK WITH MAINLY AN EASTERLY FLOW REGIME FORECAST FOR THE EXTENDED PERIODS WITH DIURNALLY DRIVEN AFTERNOON/EVENING SHOWERS AND THUNDERSTORMS FORECAST. MARINE... GENERALLY EASTERLY TO EAST SOUTHEASTERLY WINDS AROUND 10 KNOTS WILL PREVAIL ACROSS THE REGIONAL WATERS TODAY THROUGH THE REMAINDER OF THE WEEKEND. EARLY NEXT WEEK WINDS ARE FORECAST TO GRADUALLY INCREASE TO THE 10 TO 15 KNOT RANGE. SEAS ARE FORECAST TO BE MAINLY AROUND 2 FEET ACROSS THE ATLANTIC WATERS THROUGH THE WEEKEND WITH GULF SEAS 2 FEET OR LESS. EARLY NEXT WEEK REGIONAL SEAS AROUND 2 FEET ARE FORECAST WITH THE AFOREMENTIONED GRADUAL INCREASE IN THE WINDS FORECAST. && .PRELIMINARY POINT TEMPS/POPS... WEST PALM BEACH 78 89 78 89 / 40 50 20 50 FORT LAUDERDALE 80 90 80 90 / 40 50 30 50 MIAMI 79 90 79 90 / 30 40 20 50 NAPLES 76 90 76 91 / 30 60 30 60 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. GM...NONE. && SHORT TERM...60/BD LONG TERM....60/BD AVIATION...60/BD
HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA NATIONAL WEATHER SERVICE MIAMI FL 1248 PM EDT SAT SEP 6 2014 AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676- 070500- LAKE OKEECHOBEE-BISCAYNE BAY- COASTAL WATERS FROM JUPITER INLET TO DEERFIELD BEACH, FL OUT 20 NM- COASTAL WATERS FROM DEERFIELD BEACH TO OCEAN REEF, FL OUT 20 NM- WATERS FROM JUPITER INLET TO DEERFIELD BEACH, FL EXTENDING FROM 20 NM TO 60 NM- WATERS FROM DEERFIELD BEACH TO OCEAN REEF, FL EXTENDING FROM 20 NM TO THE TERRITORIAL WATERS OF THE BAHAMAS-GLADES-HENDRY- INLAND PALM BEACH-METRO PALM BEACH-COASTAL COLLIER-INLAND COLLIER- INLAND BROWARD-METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE- MAINLAND MONROE-COASTAL PALM BEACH-COASTAL BROWARD- COASTAL MIAMI DADE-FAR SOUTH MIAMI DADE- COASTAL WATERS FROM CHOKOLOSKEE TO BONITA BEACH, FL OUT 20 NM- COASTAL WATERS FROM EAST CAPE SABLE TO CHOKOLOSKEE, FL OUT 20 NM- GULF WATERS FROM CHOKOLOSKEE TO BONITA BEACH, FL EXTENDING FROM 20 TO 60 NM- 1248 PM EDT SAT SEP 6 2014 ...STRONG TO POSSIBLY SEVERE STORMS THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA. .DAY ONE...THIS AFTERNOON AND TONIGHT THUNDERSTORMS: SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED THIS AFTERNOON. A FEW STRONG TO POSSIBLY SEVERE THUNDERSTORMS ARE LIKELY THIS AFTERNOON WITH GUSTY WINDS AND CLOUD TO GROUND LIGHTNING BEING THE PRIMARY POTENTIAL IMPACTS. WIND: GUSTY WINDS UP TO 60 MPH ARE POSSIBLE IN THE STRONGEST THUNDERSTORMS. HAIL: SMALL HAIL WILL BE POSSIBLE FROM THE STRONGER STORMS THAT DEVELOP. TEMPERATURES: THE HEAT INDEX COULD REACH FROM 100 TO 104 DEGREES ACROSS PORTIONS OF THE INTERIOR PENINSULA TODAY. RIP CURRENTS: THERE IS A SLIGHT RISK OF RIP CURRENTS ALONG THE ATLANTIC COAST BEACHES. FLOODING: PONDING OF WATER IN POORLY DRAINED AREAS IS POSSIBLE ACROSS PALM BEACH COUNTY...THE LAKE REGION...AND COLLIER COUNTY THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED EACH DAY WITH THE INTERIOR PENINSULA HAVING THE GREATEST COVERAGE. A FEW STORMS COULD CONTAIN GUSTY WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION: WIDESPREAD SPOTTER ACTIVATION IS NOT ANTICIPATED, HOWEVER INDIVIDUAL SPOTTERS ARE ENCOURAGED TO REPORT HIGH WIND, HAIL AND FLOODING TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI. FOR MORE INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN MIAMI WEBSITE AT WWW.WEATHER.GOV/MIAMI.
The Miami radar (KAMX), 50 km away, was scanning. The volume nearest the first event began at 17:58 UTC.
1 lightning. Local standard time, as filed.
A landscape worker was jolted by a bolt of lightning while riding a lawn mower in Cooper City. The 27-year-old male was knocked unconscious, but regained consciousness by the time he reached the hospital a short time later. No evidence of entry or exit burns were noted.
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: 542388.