Moist and unstable southwest wind flow combined with a locally unstable atmosphere to produce strong showers and thunderstorms over SE Florida and the adjacent Atlantic waters.
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 southwest wind flow combined with a locally unstable atmosphere to produce strong showers and thunderstorms over SE Florida and the adjacent Atlantic waters.
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 2, 2:18 AM EST, 3 hours 18 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
3 waterspout, 3 marine thunderstorm wind. Local standard time, as filed.
WSVN reported that their drone pilot saw a waterspout spawned from thunderstorms over the Atlantic off North Bay Village.
A member of the public reported twin waterspouts offshore Fort Lauderdale Beach with a cluster of thunderstorms over the Atlantic.
A waterspout was reported about 4 miles east of Miami Beach.
A wind gust of 34 knots (39 mph) was recorded at WxFlow site XHBI at Hillsboro Inlet.
SFWMD site L005 Lake Okeechobee West recorded a wind gust of 39 knots (45 mph).
A peak wind gust of 38 knots (44 mph) was recorded at WxFlow site XJUP at Juno Beach Pier at 451 PM EDT. A gust to 34 knots (39 mph) was recorded 10 minutes earlier.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Atlantic Coastal Waters in 2021Every state in 2021This day in weather history
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 2026-10-01. Each event’s entry at NCEI: 980818, 980819, 980820, 980821, 980823, 980822.