A weak upper level low pressure area over South Florida produced scattered afternoon showers and thunderstorms.
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.
A weak upper level low pressure area over South Florida produced scattered afternoon showers and thunderstorms.
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 Aug 31, 2:25 PM EST, 2 hours 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIAMI FL 325 PM EDT SAT AUG 31 2013 .DISCUSSION...THUNDERSTORMS ARE DEVELOPING FROM THE EVERGLADES INTO THE WESTERN MIAMI METRO AREA EXTENDING INTO EASTERN BROWARD AND PALM BEACH COUNTIES. THE TREND WILL BE FOR FURTHER DEVELOPMENT, WITH ACTIVITY BECOMING FOCUSED BY EARLY EVENING OVER THE INTERIOR AS THE SEA BREEZES MOVE FURTHER INLAND. RADAR SCANS OVER THE PAST HOUR SHOWED 2 CELLS HAVING BECOME STRONG...ONE IN MIAMI-DADE NEAR TAMIAMI/KROME AND THE OTHER NEAR I-75 IN SOUTHERN BROWARD COUNTY. IN FACT...1/2" SIZE HAIL WAS REPORTED JUST BEFORE 3 PM AT PINES AND FLAMINGO BY AN OFF DUTY NWS EMPLOYEE. TMIA RADAR DATA HAD SHOWN STRONG WINDS WITH THE CELL IN RURAL MIAMI- DADE...INDICATING GUSTS TO 50 MPH. GIVEN THESE OBSERVATIONAL TRENDS, HAVE UPDATED THE HAZARDOUS WEATHER OUTLOOK TO REFLECT A WIND/HAIL POTENTIAL WITH THE TSTORMS THROUGH EARLY THIS EVENING. ALSO, ISOLATED STREET FLOODING IS POSSIBLE WHERE ANY THUNDERSTORMS TRAIN. ACTIVITY WILL WANE THIS EVENING WITH TRANQUIL WEATHER OVERNIGHT. A FEW TSTORMS ARE POSSIBLE OVER THE COASTAL WATERS. A LIGHT TO CALM WIND OVER LAND WILL ACT TO KEEP ANY CONVECTION OFF THE COAST. THE WEATHER PATTERN FOR THE REST OF THE HOLIDAY WEEKEND AND INTO THE LATTER PART OF NEXT WEEK WILL BE A TYPICAL RAINY SEASON ONE WITH SCATTERED AFTERNOON THUNDERSTORMS DEVELOPING EACH DAY WITH THE FOCUS OVER THE INTERIOR. AUGUST ENDS WITH YET A HURRICANE DEVELOPING IN THE ATLANTIC BASIN...THE FIRST TIME THIS HAS OCCURRED SINCE 2002. BOTH GFS AND ECMWF SHOW AN INACTIVE PERIOD THROUGH THE NEXT 10 DAYS. STILL THE MOST ACTIVE PART OF THE SEASON FROM A CLIMATOLOGICAL PERSPECTIVE LIES AHEAD, AND THE PEAK MONTH OF TROPICAL IMPACTS ACROSS SOUTH FLORIDA IS OCTOBER...SO WE HAVE A LONG WAYS TO GO. && .AVIATION... THUNDERSTORMS WERE BEGINNING TO DEVELOP NEAR KFLL AND KFXE EARLY THIS AFTERNOON ALONG THE EAST COAST SEA BREEZE. WITH A SOUTHWESTERLY STEERING FLOW ALOFT...STORMS ARE EXPECTED TO BE CLOSER TO THE EAST COAST TERMINALS THIS AFTERNOON...ESPECIALLY KFLL NORTHWARD. MVFR/IFR CONDITIONS ARE POSSIBLE IN SHOWERS AND STORMS. THE GULF COAST SEA BREEZE HAS MOVED INLAND OF KAPF...SO EXPECT VFR CONDITIONS TO CONTINUE THROUGH THE PERIOD. LIGHT AND VARIABLE WINDS ARE EXPECTED OVERNIGHT. SEA BREEZE BOUNDARIES ARE EXPECTED TO MOVE INLAND ALONG BOTH COASTS BY LATE MORNING ON SUNDAY. && .MARINE...SE WINDS OF 5-10 KT WILL PREVAIL THROUGH THE HOLIDAY WEEKEND WITH CORRESPONDING SEAS AT 2 FT OR LESS. WINDS ARE FORECAST TO BECOME EASTERLY AT NEAR 10 KT BY THE MIDDLE PART OF NEXT WEEK. && .PRELIMINARY POINT TEMPS/POPS... WEST PALM BEACH 77 89 78 89 / 20 30 20 30 FORT LAUDERDALE 79 90 80 91 / 20 20 20 20 MIAMI 78 91 79 90 / 20 30 20 30 NAPLES 75 92 76 89 / 20 30 20 30 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. GM...NONE. && DISCUSSION/MARINE/FIRE...57/GREGORIA AVIATION/RADAR...84/AK
HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA NATIONAL WEATHER SERVICE MIAMI FL 251 PM EDT SAT AUG 31 2013 AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676- 011000- 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- 251 PM EDT SAT AUG 31 2013 ...FEW STRONG THUNDERSTORMS POSSIBLE THIS AFTERNOON... ...FREQUENT LIGHTNING, STRONG WINDS AND HAIL POSSIBLE... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA. .DAY ONE...REST OF THIS AFTERNOON AND TONIGHT THUNDERSTORMS: THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS SOUTH FLORIDA AND INTO WESTERN PORTIONS OF THE EAST COAST METRO AREAS. THE STORMS ARE FORECAST TO BECOME NUMEROUS AND FOCUS OVER THE INTERIOR BY EARLY THIS EVENING WITH JUST A SLIGHT CHANCE ALONG THE COASTS. A FEW STRONG THUNDERSTORMS ARE POSSIBLE, CAPABLE OF PRODUCING FREQUENT LIGHTNING, STRONG WIND GUSTS AND HAIL. WIND: STRONG WIND GUSTS TO AROUND 50 MPH ARE POSSIBLE IN THE STRONGEST THUNDERSTORMS. HAIL: HAIL TO AROUND NICKEL SIZE IS POSSIBLE IN THE STRONGEST THUNDERSTORMS. FLOODING: ISOLATED STREET FLOODING IS POSSIBLE WHERE STORMS PERSIST OVER ANY GIVEN LOCATION. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SCATTERED AFTERNOON AND EARLY EVENING THUNDERSTORMS ARE EXPECTED EACH DAY, WITH THE MAIN THREATS BEING FREQUENT LIGHTNING STRIKES AND LOCALLY HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... 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. GREGORIA
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
358 PM EDT SAT AUG 31 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0350 PM FLOOD 2 E PEMBROKE PINES 26.01N 80.31W
08/31/2013 BROWARD FL PUBLIC
FLOODING ON GOLF COURSE IN VICINITY OF PEMBROKE LAKES
MALL. REPORT RELAYED VIA SOCIAL MEDIA.
&&
EVENT NUMBER MFL1300163
KONARIKSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
433 PM EDT SAT AUG 31 2013
FLZ066-067-312100-
HENDRY FL INLAND PALM BEACH COUNTY FL
433 PM EDT SAT AUG 31 2013
...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR SOUTHWESTERN PALM
BEACH COUNTY...SOUTHEASTERN HENDRY COUNTY...FOR FREQUENT TO EXCESSIVE
LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH...
* UNTIL 500 PM EDT
* AT 431 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
A LINE OF STRONG THUNDERSTORMS 5 MILES NORTH OF ROTENBERGER
WILDLIFE MANAGEMENT AREA MOVING NORTH AT 10 MPH.
THE PRIMARY IMPACTS WILL BE FREQUENT TO EXCESSIVE LIGHTNING AND GUSTY
WINDS OF 45 TO 55 MPH. LIGHTNING IS THE NUMBER ONE WEATHER RELATED
KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. THESE
WINDS CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND
UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE
STORM PASSES.
TORRENTIAL RAINFALL CAN BE EXPECTED...CAUSING TEMPORARY PONDING ON
SOME ROADS AND MINOR FLOODING OF POOR DRAINAGE AREAS. MOTORISTS
SHOULD SLOW DOWN IN HEAVY RAINFALL TO REDUCE THE RISK OF HYDROPLANING
AND LEAVE A SAFE DISTANCE BETWEEN OTHER VEHICLES.
LAT...LON 2639 8067 2635 8089 2628 8089 2627 8119
2643 8127 2670 8081
TIME...MOT...LOC 2032Z 158DEG 10KT 2647 8081 2629 8110
KONARIKSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
437 PM EDT SAT AUG 31 2013
FLZ067-068-168-312115-
COASTAL PALM BEACH COUNTY FL INLAND PALM BEACH COUNTY FL METRO PALM
BEACH COUNTY FL
437 PM EDT SAT AUG 31 2013
...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR NORTHERN PALM
BEACH COUNTY...FOR FREQUENT TO EXCESSIVE LIGHTNING AND GUSTY WINDS OF
45 TO 55 MPH...
* UNTIL 515 PM EDT
* AT 436 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 9 MILES WEST OF JOHNATHAN DICKINSON STATE
PARK...AND MOVING SOUTH AT 5 MPH.
* THE STORM WILL AFFECT...
PHILO FARMS...
AND SURROUNDING COMMUNITIES.
THE PRIMARY IMPACTS WILL BE FREQUENT TO EXCESSIVE LIGHTNING AND GUSTY
WINDS OF 45 TO 55 MPH. LIGHTNING IS THE NUMBER ONE WEATHER RELATED
KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. THESE
WINDS CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND
UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE
STORM PASSES.
LAT...LON 2681 8046 2696 8040 2696 8015 2697 8014
2697 8013 2682 8010
TIME...MOT...LOC 2037Z 000DEG 3KT 2698 8026
KONARIKSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
504 PM EDT SAT AUG 31 2013
FLZ067-312145-
INLAND PALM BEACH COUNTY FL
504 PM EDT SAT AUG 31 2013
...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR NORTHWESTERN PALM
BEACH COUNTY...FOR FREQUENT TO EXCESSIVE LIGHTNING AND GUSTY WINDS OF
45 TO 55 MPH...
* UNTIL 545 PM EDT
* AT 502 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 6 MILES NORTHEAST OF BELLE GLADE...AND MOVING
NORTH AT 5 MPH.
* THE STORM WILL AFFECT...
RURAL CENTRAL PALM BEACH COUNTY.
THE PRIMARY IMPACTS WILL BE FREQUENT TO EXCESSIVE LIGHTNING AND GUSTY
WINDS OF 45 TO 55 MPH. LIGHTNING IS THE NUMBER ONE WEATHER RELATED
KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. THESE
WINDS CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND
UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE
STORM PASSES.
LAT...LON 2654 8059 2661 8088 2674 8087 2671 8081
2671 8078 2669 8074 2672 8073 2677 8075
2678 8073 2675 8071 2676 8069 2681 8070
2687 8063 2696 8061 2696 8021
TIME...MOT...LOC 2104Z 194DEG 3KT 2673 8057
KONARIKSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
523 PM EDT SAT AUG 31 2013
FLZ063-312200-
GLADES FL
523 PM EDT SAT AUG 31 2013
...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR NORTHEASTERN
GLADES COUNTY...FOR FREQUENT TO EXCESSIVE LIGHTNING AND GUSTY WINDS
OF 45 TO 55 MPH...
* UNTIL 600 PM EDT
* AT 519 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 6 MILES NORTHWEST OF BRIGHTON SEMINOLE
INDIAN...AND MOVING NORTHEAST AT 10 MPH.
* THE STORM WILL AFFECT...
RURAL NORTHERN GLADES COUNTY
RURAL NORTHEASTERN GLADES COUNTY.
THE PRIMARY IMPACTS WILL BE FREQUENT TO EXCESSIVE LIGHTNING AND GUSTY
WINDS OF 45 TO 55 MPH. LIGHTNING IS THE NUMBER ONE WEATHER RELATED
KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. THESE
WINDS CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND
UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE
STORM PASSES.
LAT...LON 2720 8094 2719 8091 2702 8110 2704 8127
2712 8127 2713 8127 2713 8117 2721 8117
2722 8116 2722 8095
TIME...MOT...LOC 2123Z 216DEG 7KT 2714 8112
KONARIKSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
539 PM EDT SAT AUG 31 2013
FLZ067-068-168-312230-
COASTAL PALM BEACH COUNTY FL INLAND PALM BEACH COUNTY FL METRO PALM
BEACH COUNTY FL
539 PM EDT SAT AUG 31 2013
...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR NORTHERN PALM
BEACH COUNTY...FOR FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS OF
45 TO 55 MPH...AND THE DEVELOPMENT OF FUNNEL CLOUDS...
* UNTIL 630 PM EDT
* AT 536 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM NORTH
COUNTY AIRPORT TO 8 MILES NORTHEAST OF BELLE GLADE...AND MOVING
SOUTH AT 10 MPH.
* THE LINE OF STORMS WILL AFFECT...
NORTH COUNTY AIRPORT...
PALM BEACH GARDENS...
NORTH PALM BEACH...
BELLE GLADE...
THE ACREAGE...
RIVIERA BEACH...
AND SURROUNDING COMMUNITIES.
THE PRIMARY IMPACTS WILL BE FREQUENT TO EXCESSIVE LIGHTNING AND GUSTY
WINDS OF 45 TO 55 MPH. LIGHTNING IS THE NUMBER ONE WEATHER RELATED
KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. THESE
WINDS CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND
UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE
STORM PASSES.
FUNNEL CLOUDS OCCASIONALLY TOUCH DOWN AND PRODUCE TORNADOES. MOVE
INDOORS AND STAY AWAY FROM WINDOWS.
LAT...LON 2664 8071 2682 8070 2683 8067 2687 8063
2695 8062 2696 8061 2696 8015 2698 8014
2698 8008 2696 8007 2681 8003 2681 8004
2678 8003 2664 8003
TIME...MOT...LOC 2139Z 353DEG 7KT 2683 8020 2674 8056
KONARIKThe Melbourne radar (KMLB), 138 km away, was scanning. The volume nearest the first event began at 21:39 UTC.
1 funnel cloud. Local standard time, as filed.
A funnel cloud was reported near the intersection of Indiantown Road and west of the Florida Turnpike.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2013Every state in 2013This day in weather historyWarnings in Florida, August 2013
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: 470237.