S. provided ingredients for strong to severe thunderstorms in the Lake Okeechobee area.
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.
Moist and unstable air over South Florida ahead of a cold front over the Southeast U.S. provided ingredients for strong to severe thunderstorms in the Lake Okeechobee area.
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 Apr 28, 1:38 PM EST, 4 hours 17 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIAMI FL 238 PM EDT THU APR 28 2011 .SHORT TERM... HIGH PRESSURE WILL CONTINUE TO SLOWLY SLIDE OFF TO THE EAST TONIGHT. ANY SHOWERS OR THUNDERSTORMS LEFT ACROSS THE AREA WILL BEGIN TO DIMINISH DURING THE EVENING HOURS SHORTLY AFTER SUNSET. A WEAKENING COLD FRONT WILL MOVE INTO SOUTH FLORIDA BY FRIDAY AFTERNOON. ALTHOUGH MOST OF THE FAVORABLE DYNAMICS FOR SEVERE WEATHER WILL REMAIN TO OUR NORTH, A FEW THUNDERSTORMS ARE POSSIBLE ACROSS THE AREA OUT AHEAD OF THE FRONT. THE BEST CHANCE FOR STRONG THUNDERSTORMS WILL BE ACROSS THE NORTHERN PORTION OF OUR CWA. THIS FRONT WILL EVENTUALLY DIMINISH JUST TO OUR SOUTH AND THERE WILL BE ENOUGH MOISTURE IN PLACE TO SUPPORT A CHANCE OF ISOLATED SHOWER ACTIVITY ACROSS SOUTHERN AREAS THROUGHOUT FRIDAY NIGHT. && .LONG TERM... MANY AREAS WILL REMAIN DRY ON SATURDAY, HOWEVER EXTREME SOUTHERN AREAS NEAR THE DIMINISHING FRONTAL BOUNDARY WILL STILL HAVE A SLIGHT CHANCE OF ISOLATED SHOWERS THROUGHOUT THE DAY. WINDS WILL SHIFT TO THE NORTHEAST AND INCREASE IN SPEED DURING THE DAY ON SATURDAY. THE EASTERN HALF OF SOUTH FLORIDA COULD SEE WINDS UP TO 15 TO 20 MPH WITH HIGHER GUSTS. WINDS ARE FORECASTED TO TURN TO THE EAST AND SOUTHEAST AFTER TUESDAY AS A RIDGE OF HIGH PRESSURE CONTINUES TO BUILD INTO THE AREA. .MARINE... WINDS WILL AVERAGE BETWEEN 10 TO 15 KNOTS OUT AHEAD OF A COLD FRONT THAT WILL MOVE THROUGH THE COASTAL WATERS ON FRIDAY. BEHIND THIS FRONT, WINDS WILL SHIFT TO THE NORTHEAST AND INCREASE TO 15 TO 20 MPH WITH HIGHER GUSTS ON SATURDAY. SEAS COULD APPROACH 6 FEET OVER PORTIONS OF THE GULF STREAM ON SATURDAY. && .FIRE WEATHER... AREAS OF SMOKE WILL AFFECT PORTIONS OF COLLIER, GLADES, AND HENDRY COUNTIES TONIGHT INTO TOMORROW. THIS WILL CREATE RESTRICTED VISIBILITIES ALONG WITH HAZARDOUS DRIVING CONDITIONS. WINDS MAY SHIFT TO THE NORTHEAST LATER ON FRIDAY INTO SATURDAY. THIS COULD RESULT IN ANY ONGOING FIRE BEHAVING DIFFERENTLY WITH THE SMOKE SPREADING IN A DIFFERENT DIRECTION. MINIMUM RELATIVE HUMIDITY VALUES ARE FORECASTED TO STAY ABOVE 35 PERCENT DURING THE DAY ON FRIDAY. ON SATURDAY, MINIMUM RELATIVE HUMIDITY VALUES COULD FALL BELOW 35 PERCENT FOR A FEW HOURS IN THE AFTERNOON ACROSS NORTHWESTERN INTERIOR SECTIONS. && .PRELIMINARY POINT TEMPS/POPS... WEST PALM BEACH 75 87 68 83 / 20 30 10 10 FORT LAUDERDALE 75 88 71 83 / 20 30 10 10 MIAMI 75 89 71 85 / 20 30 20 20 NAPLES 74 91 69 88 / 20 30 10 10 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. GM...NONE. && DISCUSSION/MARINE...55/CWC AVIATION/RADAR/FIRE...47/RGH
HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA...UPDATED NATIONAL WEATHER SERVICE MIAMI FL 430 PM EDT THU APR 28 2011 FLZ063-066>075-168-172>174-290845- 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- 430 PM EDT THU APR 28 2011 ...SMOKE MAY CAUSE REDUCED VISIBILITIES TONIGHT WEST... ...MODERATE RISK OF RIP CURRENTS ATLANTIC BEACHES... ...CHANCE OF EVENING THUNDERSTORMS MOSTLY NEAR LAKE OKEECHOBEE... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA. .DAY ONE...THIS EVENING AND TONIGHT RIP CURRENTS: A SOUTHEAST WIND OF 10 TO 15 MPH COMBINED WILL CONTINUE TO RESULT IN A MODERATE RISK OF RIP CURRENTS AT THE ATLANTIC BEACHES OF PALM BEACH, BROWARD AND MIAMI-DADE COUNTIES. THUNDERSTORMS: SCATTERED THUNDERSTORMS ARE EXPECTED THIS EVENING MAINLY INLAND ACROSS GLADES, HENDRY, PALM BEACH AND BROWARD COUNTIES. THE PRIMARY IMPACT FROM THE STRONGEST STORMS WILL BE OCCASIONAL LIGHTNING STRIKES, GUSTY WINDS TO 45 MPH, SMALL HAIL AND BRIEF HEAVY DOWNPOURS. TEMPERATURES: A LARGE PORTION OF INTERIOR SOUTH FLORIDA WILL REACH THE MID 90S THIS AFTERNOON AND THIS COMBINED WITH HIGH HUMIDITY WILL RESULT IN HEAT INDEX VALUES, OR APPARENT TEMPERATURES, OF 100 TO 105 DEGREES WITH VALUES JUST ABOVE 105 POSSIBLE IN SOME OF THE WARMEST SPOTS. VISIBILITY: MULTIPLE WILDFIRES CONTINUE ACROSS SOUTH FLORIDA TODAY. A FEW FIRES ARE CURRENTLY IN THE BIG CYPRESS PRESERVE, NEAR THE GOLDEN GATE COMMUNITY IN NAPLES, AND NEAR MUSE IN GLADES COUNTY. SMOKE FROM THESE FIRES COULD RESULT IN REDUCED VISIBILITIES THIS EVENING AND TONIGHT. THIS COULD ALSO CAUSE PROBLEMS FOR PERSONS WITH BREATHING ILLNESSES. FURTHERMORE, SHOULD THERE BE ANY WIND SHIFTS NEAR THESE FIRES TOWARD RESIDENTIAL AREAS EVACUATION ORDERS COULD BE PUT IN PLACE. SO RESIDENTS ARE ADVISED TO REMAIN ON THE ALERT WITH THE LOCAL AUTHORITIES. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE WILL BE A CHANCE FOR THUNDERSTORMS ON FRIDAY ACROSS ALL OF SOUTH FLORIDA AHEAD OF THE WEAKENING COLD FRONT. SOME OF THESE STORMS MAY BE CAPABLE OF PRODUCING GUSTY WINDS AND SMALL HAIL. A NORTHEAST TO EAST WIND OF 15 TO 20 MPH WILL DEVELOP ACROSS THE ATLANTIC BEACHES ON SATURDAY AND SUNDAY RESULTING IN AT LEAST A MODERATE RISK OF RIP CURRENTS. THE THREAT FOR RIP CURRENTS WILL CONTINUE INTO EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. FOR MORE INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN MIAMI WEBSITE AT WWW.WEATHER.GOV/MIAMI. PS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 432 PM EDT THU APR 28 2011 FLZ066-282100- HENDRY FL- 432 PM EDT THU APR 28 2011 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SIGNIFICANT WEATHER ADVISORY FOR... CENTRAL HENDRY COUNTY * UNTIL 500 PM EDT * AT 426 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 10 MILES SOUTHEAST OF DEVILS GARDEN... MOVING NORTHEAST AT 5 MPH. * THE STORM WILL AFFECT... RURAL SOUTH EASTERN HENDRY COUNTY ALONG HIGHWAY 846. THE PRIMARY IMPACTS WILL BE FREQUENT TO EXCESSIVE LIGHTNING AND UP TO NICKEL SIZED HAIL. LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. SEEK SHELTER IN A SAFE BUILDING UNTIL THE STORM PASSES. LAT...LON 2660 8107 2649 8088 2635 8099 2642 8121 TIME...MOT...LOC 2031Z 219DEG 6KT 2648 8105 TINGLER
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 456 PM EDT THU APR 28 2011 FLZ066-282130- HENDRY FL- 456 PM EDT THU APR 28 2011 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SIGNIFICANT WEATHER ADVISORY FOR... EAST CENTRAL HENDRY COUNTY * UNTIL 530 PM EDT * AT 452 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 11 MILES SOUTHEAST OF DEVILS GARDEN...AND MOVING NORTHEAST AT 5 MPH. * THE STORM WILL AFFECT... RURAL EASTERN HENDRY COUNTY ALONG HIGHWAY 846. THE PRIMARY IMPACTS WILL BE FREQUENT TO EXCESSIVE LIGHTNING AND UP TO NICKEL SIZED HAIL. LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. SEEK SHELTER IN A SAFE BUILDING UNTIL THE STORM PASSES. LAT...LON 2662 8090 2642 8088 2637 8104 2649 8113 TIME...MOT...LOC 2055Z 240DEG 5KT 2648 8101 TINGLER
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 539 PM EDT THU APR 28 2011 FLZ066-282215- HENDRY FL- 539 PM EDT THU APR 28 2011 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SIGNIFICANT WEATHER ADVISORY FOR... NORTHEASTERN HENDRY COUNTY * UNTIL 615 PM EDT * AT 536 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A CLUSTER OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES NORTHEAST OF DEVILS GARDEN TO 9 MILES SOUTHEAST OF DEVILS GARDEN... AND MOVING EAST AT 15 MPH. * THE LINE OF STORMS WILL AFFECT... CLEWISTON... AND SURROUNDING COMMUNITIES. THE MAIN IMPACT WILL BE FREQUENT TO EXCESSIVE LIGHTNING. LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. SEEK SHELTER IN A SAFE BUILDING UNTIL THE STORM PASSES. LAT...LON 2676 8092 2648 8090 2650 8123 2669 8120 TIME...MOT...LOC 2139Z 259DEG 13KT 2669 8104 2652 8102 TINGLER
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
553 PM EDT THU APR 28 2011
FLZ066-282215-
HENDRY FL-
553 PM EDT THU APR 28 2011
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
* SIGNIFICANT WEATHER ADVISORY FOR...
CENTRAL HENDRY COUNTY
* UNTIL 615 PM EDT
* AT 549 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES
SOUTHWEST OF DEVILS GARDEN TO 8 MILES NORTHWEST OF BIG CYPRESS
SEMINOLE INDIAN RESERVATION. THESE STORMS WERE WERE NEARLY
STATIONARY.
* THE LINE OF STORMS WILL AFFECT...
RURAL CENTRAL AND SOUTH HENDRY COUNTY ALONG HIGHWAYS 846 AND 833.
FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS FROM 40 T0 50 MPH...UP
TO NICKEL-SIZED HAIL...TORRENTIAL DOWNPOURS...OR A COMBINATION OF
THESE ARE POSSIBLE. 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 2665 8128 2641 8091 2629 8107 2652 8127
2656 8134
TIME...MOT...LOC 2152Z 200DEG 0KT 2653 8122 2638 8107
TINGLERSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
602 PM EDT THU APR 28 2011
FLZ063-282230-
GLADES FL-
602 PM EDT THU APR 28 2011
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
* SIGNIFICANT WEATHER ADVISORY FOR...
SOUTHEASTERN GLADES COUNTY
* UNTIL 630 PM EDT
* AT 558 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 5 MILES
EAST OF ORTONA TO MOORE HAVEN...AND MOVING NORTHEAST AT 10 MPH.
* THE LINE OF STORMS WILL AFFECT...
MOORE HAVEN...
LAKEPORT...
AND SURROUNDING COMMUNITIES.
THE PRIMARY IMPACTS WILL BE FREQUENT TO EXCESSIVE LIGHTNING AND UP TO
NICKEL SIZED HAIL. LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER
IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. SEEK SHELTER
IN A SAFE BUILDING UNTIL THE STORM PASSES.
LAT...LON 2707 8093 2703 8094 2703 8097 2705 8097
2698 8108 2695 8106 2692 8108 2693 8110
2689 8111 2688 8109 2685 8109 2683 8106
2682 8101 2677 8102 2678 8130 2695 8125
2707 8094
TIME...MOT...LOC 2201Z 217DEG 9KT 2681 8122 2686 8106
TINGLERSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
633 PM EDT THU APR 28 2011
FLZ063-282300-
GLADES FL-
633 PM EDT THU APR 28 2011
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
* SIGNIFICANT WEATHER ADVISORY FOR...
NORTHEASTERN GLADES COUNTY
* UNTIL 700 PM EDT
* AT 628 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 4 MILES
SOUTHEAST OF BRIGHTON SEMINOLE INDIAN TO 5 MILES SOUTH OF
LAKEPORT...AND MOVING NORTHEAST AT 15 MPH.
* THE LINE OF STORMS WILL AFFECT...
LAKEPORT...
BRIGHTON RESERVATION...
AND SURROUNDING COMMUNITIES.
THE PRIMARY IMPACTS WILL BE FREQUENT TO EXCESSIVE LIGHTNING AND UP TO
NICKEL SIZED HAIL. LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER
IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. SEEK SHELTER
IN A SAFE BUILDING UNTIL THE STORM PASSES.
LAT...LON 2720 8092 2716 8087 2714 8087 2707 8094
2707 8093 2704 8093 2703 8097 2705 8097
2701 8101 2698 8108 2692 8107 2693 8110
2689 8111 2687 8109 2690 8118 2722 8109
2722 8095
TIME...MOT...LOC 2232Z 213DEG 14KT 2705 8099 2692 8111
TINGLERThe Melbourne radar (KMLB), 111 km away, was scanning. The volume nearest the first event began at 22:56 UTC.
1 hail. Local standard time, as filed.
Reported by the Sheriff’s department as well as Lightsey Fish Company. Hail blew off screen porch.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2011Every state in 2011This day in weather historyWarnings in Florida, April 2011
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: 305077.