A front moving down the peninsula with a pre-frontal trough moving into South Florida allowed for increased instability. There also was a 50-60 kt jet moving in from the Gulf to increase severe thunderstorm potential.
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 front moving down the peninsula with a pre-frontal trough moving into South Florida allowed for increased instability. There also was a 50-60 kt jet moving in from the Gulf to increase severe thunderstorm potential. These synoptic features across South Florida allowed for active severe convection across the east coast. Sea breeze convection developed across interior South Florida and moved towards the east coast with southwesterly flow in place. These storms caused damage across Miami-Dade County including downed trees and power poles.
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 May 6, 12:44 PM EST, 1 hour 5 minutes earlier.
Area Forecast Discussion National Weather Service Miami FL 144 PM EDT Mon May 6 2019 .AVIATION... Showers and thunderstorms have developed inland of east coast terminals and will become more numerous as the drift east toward the airports. Have added MVFR TEMPO group to support this, but timing and magnitude of the restrictions and wind gusts will likely need to be fine tuned later this afternoon. Conditions will quiet after sunset, with much lower rainfall coverage expected Tuesday. Winds will be onshore for the remainder of today, calm tonight, with light/moderate easterly flow setting up Tuesday. && .PREV DISCUSSION... /issued 1051 AM EDT Mon May 6 2019/ UPDATE... Forecast appears on track for today, with midday/early afternoon convective initiation near and inland of the Atlantic sea breeze. Activity should quickly become scattered to numerous, and push eastward with time, as upper-level flow remains out of the WSW. Moisture has increased further from yesterday, and with many drainages still recovering from Sunday's rain, localized flooding is possible wherever excessive downpours occur across the east coast urban corridor. 12Z RAOB analysis revealed overall atmosphere quite similar to yesterday, in regard to severe potential, and SPC has maintained the eastern 2/3rd of South Florida in a Marginal Risk for severe thunderstorms. Damaging wind is the mostly likely severe type, although hail can't be ruled out (yet warmer temperatures aloft and overall moistening airmass may preclude large hail). Waterspouts are reasonable and can't totally rule out localized convergence and boundary interactions that lead to the formation of funnel clouds. Activity, as in recent days, should diminish fairly quickly after sunset. PREV DISCUSSION... /issued 339 AM EDT Mon May 6 2019/ DISCUSSION... TODAY AND TONIGHT: Several features in play for the weather across South Florida today: The approaching frontal boundary moving into the Big Bend region of Florida this morning, weaker pre-frontal trough/shear zone across Central Florida, and upper level shortwave trough/vort max moving into the eastern Gulf accompanied by a 40-50kt upper level jet. This all adds up to another active day setting up across South Florida. Region is currently in between the Central Florida shear zone and convergent activity lifting northeast across the Keys, bringing a few hours of quiet conditions. However, radar trends suggest that the trigger for the Keys activity will shift a little northeast as we go towards daybreak as the boundary across Central Florida shifts south, and short range models suggest a few showers and storms across the area to start this morning. There may be a period of relative quiet mid to late morning, before similar to the past few days, convection develops along the Gulf breeze as it moves inland. With steering flow remaining a steady 10- 15kts from the WNW, showers and storms will once again pile up along the east coast during the afternoon and evening hours. Activity may last a little longer into the evening hours as we see either outflow from storms across Central Florida arriving late in the day or the influence of the front itself moves in. Atmosphere remains supportive of strong to severe storms, with the extra synoptic support of the front and passing upper level features. Damaging winds and small hail continue as the main concerns. SPC has once again placed much of the eastern half of the region in a marginal risk for severe weather today. Given the past several days of heavy rainfall along the east coast and flooding that has been occurring, likely any heavy rainfall in these urban areas will lead to at least minor flooding. TUESDAY: Quickly building mid level ridge across the Central Gulf of Mexico will bring flow aloft around to the north-northwest, giving what's left of the frontal boundary enough momentum to push just south of the region by late day. Warming temperatures aloft, a drying atmosphere, and easterly flow quickly overrunning the boundary will curb the high rain chances that we've seen the past few days. Coverage for most areas will be scattered at best, with storm development generally limited to areas south of I-75. Quicker Atlantic seabreeze development should hold east coast temps in the mid 80s, though the interior and Gulf coast will still reach into the upper 80s and low 90s. WEDNESDAY THROUGH SATURDAY: A much quieter, though not dry, period is expected mid to late week with the low level western Atlantic ridge axis generally to our north, building mid-upper level ridge across the Gulf of Mexico. Generally northwest flow aloft on the east side of the ridge will continue to send a fairly dry airmass down the state. However, as we are in May, it is tough to have a completely dry forecast and enough moisture remains for seasonable rain chances with scattered afternoon showers and storms. With light steering flow, both seabreezes should have the opportunity to develop and move inland each afternoon, focusing activity across the interior. GFS remains more aggressive in developing a late week upper level trough, while the ECMWF doubles down on the ridge. However, there are only minor differences between the two in terms of sensible weather, so forecast continues with seasonable rain chances as we go into next weekend. MARINE...Light south southwest flow is expected today as a weak frontal boundary pushes into the area, washing out by Tuesday. High pressure will be in place to the north for the remainder of the week, bringing light to moderate southeasterly flow with the development of both the Gulf and Atlantic seabreezes each afternoon. A 1-3ft NE swell will work its way into the Atlantic waters late Wednesday through Friday, bringing seas up to 4-6ft at times, mainly offshore Palm Beach County. Numerous showers and storms are expected to develop across the interior and Lake Okeechobee again this afternoon, pushing off the east coast during the evening hours. As with the past few days, likely a few of these will produce frequent lightning and strong wind gusts as they move into the local waters. More scattered coverage is expected to remainder of the week, primarily across inland waterways and Lake Okeechobee. Hazardous winds and seas can be expected in and near any thunderstorms. && .PRELIMINARY POINT TEMPS/POPS... West Palm Beach 89 72 85 73 / 70 20 20 10 Fort Lauderdale 88 75 85 75 / 60 20 20 20 Miami 91 75 87 75 / 70 10 30 20 Naples 85 73 88 71 / 20 10 20 10 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...None. AM...None. GM...None. && UPDATE...23/SBK DISCUSSION...88/ALM MARINE...88/ALM AVIATION...23/SBK
Hazardous Weather Outlook for South Florida National Weather Service Miami FL 1041 AM EDT Mon May 6 2019 AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676- 070245- 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 from 20 to 60 NM- Waters from Deerfield Beach to Ocean Reef FL from 20 to 60 NM excluding the territorial waters of 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- Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM- 1041 AM EDT Mon May 6 2019 ...MARGINAL RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING... ...LOCALIZED FLOODING POSSIBLE EAST COAST URBAN AREAS... This hazardous weather outlook is for South Florida. .DAY ONE...TODAY AND TONIGHT Thunderstorms: Thunderstorms are likely this afternoon and evening across much of South Florida. Some thunderstorms may be strong with gusty winds, frequent lightning, and small hail. Wind: There is a marginal risk of severe thunderstorms this afternoon, mainly over eastern sections of South Florida. Isolated severe thunderstorms could produce wind gusts up to 60 mph. Hail: The stronger thunderstorms that develop today could produce hail up to the size of nickels. Flooding: There is a reasonable threat of flooding including substantial ponding and drainage problems, especially in locations that have seen heavy rainfall over the past few days. Travel disruptions due to numerous lane closures and a few impassable roads are likely in vulnerable areas and possible on major arteries. Waterspouts: There is a slight chance of waterspouts across the Atlantic and Lake Okeechobee waters. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY Scattered showers and thunderstorms are possible across South Florida each afternoon during the week. The primary hazards will be lightning, gusty winds, and locally heavy rainfall. The risk of rip currents across the east coast beaches will be increasing towards the end of the week and into the upcoming weekend. .SPOTTER INFORMATION STATEMENT... Widespread spotter activation is not anticipated, however individual spotters are encouraged to report high wind, hail, funnel clouds, 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.
Special Weather Statement
National Weather Service Miami FL
159 PM EDT Mon May 6 2019
FLZ067-071-061830-
Inland Broward County FL-Inland Palm Beach County FL-
159 PM EDT Mon May 6 2019
...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN BROWARD COUNTY UNTIL 230
PM EDT...
* At 159 PM EDT, National Weather Service meteorologists were
tracking strong thunderstorms along a line extending from 6 miles
southeast of Holey Land Wildlife Refuge to near Miccosukee Service
Plaza. Movement was east at 25 mph.
* Wind gusts of 50 to 55 mph and funnel clouds possible with these
storms.
* Locations impacted include...
Intersection Alligator Alley And Miami Canal and Mile Marker 30 On
Alligator Alley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.
&&
LAT...LON 2639 8049 2631 8051 2631 8042 2611 8053
2613 8070 2637 8059
TIME...MOT...LOC 1759Z 259DEG 20KT 2635 8069 2618 8080
CohenSpecial Weather Statement National Weather Service Miami FL 214 PM EDT Mon May 6 2019 FLZ072>074-061900- Metro Broward County FL-Metropolitan Miami Dade FL-Inland Miami- Dade County FL- 214 PM EDT Mon May 6 2019 ...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL MIAMI-DADE COUNTY UNTIL 300 PM EDT... * At 213 PM EDT, National Weather Service meteorologists were tracking strong thunderstorms along a line extending from near Miramar to near Miccosukee Resort. Movement was east at 20 mph. * Winds in excess of 45 mph possible with these storms. * Locations impacted include... Hialeah, Miramar, Miami Gardens, Doral, Miami Lakes, Hialeah Gardens, Opa-Locka, Miami Springs, Sweetwater, Medley, Fountainbleau, Palm Springs North, Country Club, Pennsuco, Miramar Parkway And University Drive, Intersection Krome And U.S. 27, Miccosukee Resort, Tamiami, University Park and Olympia Heights. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with these storms, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. To report severe weather, contact your nearest law enforcement agency. You can also share your report with NWS Miami on Facebook and Twitter. && LAT...LON 2599 8021 2573 8035 2576 8059 2595 8044 TIME...MOT...LOC 1813Z 266DEG 16KT 2596 8037 2581 8051 Cohen
Special Weather Statement National Weather Service Miami FL 224 PM EDT Mon May 6 2019 FLZ067-068-071-072-168-172-061900- Inland Broward County FL-Coastal Broward County FL- Coastal Palm Beach County FL-Metro Broward County FL- Inland Palm Beach County FL-Metro Palm Beach County FL- 224 PM EDT Mon May 6 2019 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PALM BEACH COUNTY UNTIL 300 PM EDT... * At 224 PM EDT, National Weather Service meteorologists were tracking a strong thunderstorm over Mission Bay, or 8 miles north of Coral Springs, moving east at 20 mph. * Small hail, funnel clouds, and wind gusts of 50 to 55 mph possible with this storm. * Locations impacted include... Boca Raton, Deerfield Beach, Delray Beach, Coconut Creek, Parkland, Mission Bay, Boca Pointe, Boca Del Mar, Hamptons At Boca Raton, Kings Point, Whisper Walk, Loxahatchee NWR, Fau South Campus, Hillsboro Ranches, Hillsboro Pines, Boca West, South County Regional Park, Sandalfoot Cove, Morikami Park and Boca Raton Equestrian. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. To report severe weather, contact your nearest law enforcement agency. You can also share your report with NWS Miami on Facebook and Twitter. && LAT...LON 2633 8031 2644 8029 2646 8009 2631 8012 TIME...MOT...LOC 1824Z 266DEG 16KT 2640 8024 Cohen
Special Weather Statement National Weather Service Miami FL 235 PM EDT Mon May 6 2019 FLZ071-072-172-061915- Inland Broward County FL-Coastal Broward County FL- Metro Broward County FL- 235 PM EDT Mon May 6 2019 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN BROWARD COUNTY UNTIL 315 PM EDT... * At 235 PM EDT, National Weather Service meteorologists were tracking strong thunderstorms along a line extending from Godfrey Road to near Intersection I-75 And U.S. 27. Movement was east at 45 mph. * Wind gusts up to 50 mph and funnel clouds possible with these storms. * Locations impacted include... Fort Lauderdale, Coral Springs, Pompano Beach, Sunrise, Deerfield Beach, Tamarac, Margate, Lighthouse Point, Lauderdale-By-The-Sea, Lauderhill, Coconut Creek, Oakland Park, North Lauderdale, Lauderdale Lakes, Parkland, Wilton Manors, Hillsboro Beach, Sea Ranch Lakes, Lazy Lake and Broadview-Pompano Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. To report severe weather, contact your nearest law enforcement agency. You can also share your report with NWS Miami on Facebook and Twitter. && LAT...LON 2613 8005 2619 8049 2633 8038 2631 8004 TIME...MOT...LOC 1835Z 260DEG 38KT 2630 8021 2621 8039 Cohen
Special Weather Statement
National Weather Service Miami FL
241 PM EDT Mon May 6 2019
FLZ067-068-168-061930-
Coastal Palm Beach County FL-Inland Palm Beach County FL-
Metro Palm Beach County FL-
241 PM EDT Mon May 6 2019
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN PALM BEACH COUNTY
UNTIL 330 PM EDT...
* At 240 PM EDT, National Weather Service meteorologists were
tracking strong thunderstorms along a line extending from near
Palm Beach Gardens to Atlantis, and elsewhere across portions of
eastern Palm Beach County. Movement was northeast at 35 mph.
* Wind gusts up to 50 mph and funnel clouds possible with these
storms.
* Locations impacted include...
West Palm Beach, Boynton Beach, Wellington, Jupiter, Palm Beach
Gardens, Lake Worth, Riviera Beach, Palm Beach, Tequesta, Juno
Beach, Ocean Ridge, Greenacres, Royal Palm Beach, Palm Springs,
North Palm Beach, Lantana, Lake Park, Atlantis, Haverhill and Cloud
Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.
&&
LAT...LON 2652 8003 2652 8015 2670 8028 2686 8027
2697 8012 2697 8003
TIME...MOT...LOC 1840Z 231DEG 31KT 2686 8015 2659 8012
CohenSpecial Weather Statement
National Weather Service Miami FL
249 PM EDT Mon May 6 2019
FLZ073-074-173-061930-
Metropolitan Miami Dade FL-Inland Miami-Dade County FL-
Coastal Miami Dade County FL-
249 PM EDT Mon May 6 2019
...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MIAMI-DADE COUNTY UNTIL
330 PM EDT...
* At 249 PM EDT, National Weather Service meteorologists were
tracking strong thunderstorms along a line extending from Hialeah
to The Hammocks. Movement was east at 25 mph.
* Wind gusts of 50 to 55 mph possible with these storms.
* Locations impacted include...
Miami, Hialeah, Hollywood, Miramar, Miami Beach, Coral Gables, Key
Biscayne, South Miami, Surfside, Hallandale, Miami Gardens,
Virginia Key, Kendall, North Miami, Doral, North Miami Beach,
Aventura, Miami Lakes, Hialeah Gardens and Sunny Isles Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This activity was also developing in an environment favorable for the
formation of funnel clouds. Stay tuned to NOAA weather radio and
local media for additional updates and possible warnings.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.
&&
LAT...LON 2601 8005 2582 8004 2564 8008 2560 8013
2554 8010 2561 8055 2575 8055 2596 8032
2596 8030 2597 8029 2597 8012 2601 8012
TIME...MOT...LOC 1849Z 272DEG 23KT 2585 8029 2568 8046
CohenThe Miami radar (KAMX), 21 km away, was scanning. The volume nearest the first event began at 18:52 UTC.
3 thunderstorm wind. Local standard time, as filed.
A thunderstorm wind gust estimated at 50 mph caused some damage at a Top Golf and a tractor trailer. Top Golf had damage to its nets and some furniture tossed around. Along the Florida Turnpike adjacent to the Top Golf, a tractor trailer flipped on its side.
Pictures on the Univision Channel 23 website of damage to trees, fences, street signs, sheds, and house siding in the area of Horse Country from the Florida Turnpike to SW 132 Avenue between Bird Road and Miller Drive.
An amateur radio operator reported power poles and lines reported down in the vicinity of SW 122nd Avenue and SW 152 Street.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2019Every state in 2019This day in weather historyWarnings in Florida, May 2019
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: 826367, 826362, 826359.