Deep tropical moisture lead to the development of showers and storms across South Florida during the morning and early afternoon hours. Numerous boundary collisions lead to the development of a funnel clouds across northwestern Broward County and street flooding in Miami.
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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.
Deep tropical moisture lead to the development of showers and storms across South Florida during the morning and early afternoon hours. Numerous boundary collisions lead to the development of a funnel clouds across northwestern Broward County and street flooding in Miami.
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 Jun 14, 7:33 AM EST, 2 hours 56 minutes earlier.
Area Forecast Discussion National Weather Service Miami FL 833 AM EDT Thu Jun 14 2018 .AVIATION... A weak flow pattern should allow any convective activity to be more sea breeze dominated today. Some convective SHRA is possible this morning, with SHRA and TSRA possible this afternoon, but should be more towards the interior. However, they may be close enough to impact the TAF sites, so kept the VCTS this afternoon. The most active area may be near KPBI, where the sea breeze collides with the lake breeze this afternoon. Activity should begin to diminsh around sunset. && .UPDATE... This mornings update adjusts PoPs to account for new Hi-res model runs, which bring showers into the forecast for the mainland slightly earlier. Also, new models suggest thunderstorm activity may be more scattered in nature than the last couple of days, as models are showing somewhat less CAPE, with this mornings sounding a couple of hundred joules less than the last couple of mornings. 500mb temps are still around -8C. The Freezing level is 14k ft and PWATs are 1.70 inches, slightly drier than the last couple of days as well. The wind is fairly weak all the way up through 250mb, coming in generally less than 20 kts. Generally, not the most impressive for strong thunderstorms, with downbursts of maybe 40 to 50 mph possible in the strongest storms. Small hail might be possible, but the NCAPE of .14 indicates weak to maybe moderate vertical velocity. The slow movement may make a concern for street flooding in urban areas. In essence, would expect a more sea/lake breeze driven pattern, with storm motion of around 15 kts, give or take a few kts. There may be the possibility of some funnel clouds with the weak flow, with any boundary collisions. Best timing looks to be after 1 pm, and possibly more towards mid afternoon, through the evening hours. && .PREV DISCUSSION... /issued 416 AM EDT Thu Jun 14 2018/ DISCUSSION... Southeasterly surface flow continues to advect moisture over the FL peninsula. Disorganized convection over the nw Caribbean sea will continue to stream debris clouds across South FL which will keep the temperatures in the upper 80s along the east coast metro areas and low 90s across the interior and west coast each afternoon through Friday. This weather pattern will prevail through Friday with scattered showers and thunderstorms developing during the afternoon sea breeze. Most of the coverage will shift towards the interior during the late afternoon hours. Ridge building over the region this weekend will favor a more easterly flow. With this east flow most of the afternoon convection should be mainly concentrated along the west Gulf coast this weekend as Gulf sea breeze develops. Models suggest a weak back door front moving near the peninsula this weekend. This could have the potential of increasing the chance of showers and thunderstorms across South Florida. There is also a high chance of having SAL reaching the area limiting the potential for rain. This will continue to be monitored as the weekend approaches. Winds will become more easterly through early next week as the upper ridge strengthens over the area. This will keep most of the sea breeze afternoon convection focus over the west Gulf coast. By mid week, winds will shift more southerly as the a tropical disturbance moves westward over the western Caribbean. Most of the deeper moisture could reach South FL by the end of the next week increasing the chance of rain. MARINE... Southeasterly winds are expected to continue across the Atlantic and Gulf coast waters through the end of the week. Scattered showers and thunderstorms will also be possible especially over Lake Okeechobee and the Atlantic waters during the afternoon hours. Seas will generally be 2 feet or less, however, there could be locally higher winds and waves in and around any showers or thunderstorms. AVIATION... VFR prevails through the late morning hours along with mainly light and variable winds. VCTS returns early in the afternoon along with SSE flow around 10kt. Only exception will be again APF where onshore flow returns around 17-18Z as sea breezes develop. && .PRELIMINARY POINT TEMPS/POPS... West Palm Beach 87 74 89 74 / 50 30 30 20 Fort Lauderdale 87 76 89 77 / 30 30 30 20 Miami 86 76 88 77 / 30 30 30 20 Naples 89 77 91 78 / 30 20 30 10 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...None. AM...None. GM...None. && UPDATE...13 DISCUSSION...67/MT MARINE...67/MT AVIATION...13
Hazardous Weather Outlook for South Florida National Weather Service Miami FL 838 AM EDT Thu Jun 14 2018 AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676- 150045- 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- 838 AM EDT Thu Jun 14 2018 ...Thunderstorms Possible Across South Florida Today... ...Waterspouts Possible for the South Florida Atlantic Waters... This hazardous weather outlook is for South Florida. .DAY ONE...TODAY AND TONIGHT Thunderstorms: Thunderstorms are possible again across the area today. Activity is expected to be more active over interior and Lake region areas this afternoon and early evening. However, the Atlantic metro areas could experience thunderstorm activity at any time during the afternoon hours. The primary threats are lightning, small hail, gusty wind, and localized urban street flooding. Some storms could be strong. Waterspouts: Conditions are favorable for the development of waterspouts over the Atlantic waters including Biscayne Bay. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY Scattered thunderstorms are forecast each day, generally along the east coast during the overnight and morning hours, and across the interior and Gulf coast during the afternoons and evenings. The primary threat will be lightning, although gusty winds and locally heavy rain are also possible. .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.
The national radar mosaic for the moment the first event began.
1 funnel cloud, 1 flood. Local standard time, as filed.
Member of the public located at the intersection of Atlantic Boulevard and University Drive in Coral Springs reported a funnel approximately 5 miles to the south of their current location.
Report received via trained spotter of flooding along the roadway rendering NW 37th Avenue between NW 36th Street and NW 46th Street impassable. Several smaller roads in the area are also flooded. Radar and observations in the area suggest 2 to 3 inches of rain had fallen.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2018Every state in 2018This day in weather historyWarnings in Florida, June 2018
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: 771187, 771188.