A weak downburst from a collapsing thunderstorm produces damage at a baseball diamond.
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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 TBW wrote it up.
A weak downburst from a collapsing thunderstorm produces damage at a baseball diamond.
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 Tampa Bay, FL wrote its last area forecast discussion before the first event at Aug 11, 12:50 PM EST, 35 minutes earlier.
Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 150 PM EDT Tue Aug 11 2020 .DISCUSSION... Scattered thunderstorms already pushing inland across much of the area with a little vort max energy enhancing development across the extreme north. Storms will continue to develop and move along seabreeze and outflow boundaries through the rest of the afternoon and evening. Winds become light and variable after sunset, with storms gradually dissipating. Slightly stronger ridging will be building in across the area through the end of the week as a front washes out across north Florida. This will bring a bit more prevailing E/SE flow across the area but still light enough for good afternoon sea breeze development each day. Storms will be mainly in the afternoon and evening with the sea breeze. Highs will continue in the lower to mid 90s with lows in the mid to upper 70s each day. Upper level troughing developing over the eastern U.S. will help to suppress the subtropical ridge of late southward transitioning over the weekend and continuing through early next week as a frontal trough stalls out across the Southeastern states and north Florida. With the ridge sinking south a developing westerly wind flow will favor a convective pattern change with showers and storms focusing over the Gulf waters and along coastal areas during the late night and early morning hours with the convection then shifting to inland locations each afternoon where the best areal coverage and highest pops will reside each day. Overnight low temperatures will run above normal along the coast due to the onshore flow where readings around 80 can be expected with mid to upper 70s inland. Daytime highs will run near normal with highs climbing into the lower to mid 90s each afternoon. && .AVIATION... Winds are turning onshore this afternoon with scattered thunderstorms already impacting some terminals. Storms will continue to be possible through around 02z, then dissipate with winds becoming light and variable for the overnight hours. Winds will increase and turn onshore for Wednesday afternoon along with the chance for some vcty thunderstorms starting around 16z. && .MARINE... Light winds and seas will continue under weak high pressure through mid-week. Slightly stronger ridging builds in for the end of the week and into the weekend, with E/SE winds turning onshore in the afternoon. Scattered showers and thunderstorms will be possible each day. Winds and seas will be higher in and near thunderstorms. && .FIRE WEATHER... No concerns. Humidities will remain above critical levels through the period. && .Preliminary Point Temps/PoPs... TPA 78 92 78 93 / 30 60 30 60 FMY 76 93 76 93 / 40 60 20 60 GIF 76 92 75 93 / 30 80 20 80 SRQ 77 92 77 93 / 30 60 30 50 BKV 74 92 74 93 / 30 70 30 70 SPG 79 93 78 93 / 30 60 30 60 && .TBW WATCHES/WARNINGS/ADVISORIES... FL...None. Gulf waters...None. && SHORT TERM/AVIATION/MARINE/FIRE WEATHER...24/Hubbard LONG TERM/DECISION SUPPORT...57/McMichael
The Tampa radar (KTBW), 29 km away, was scanning. The volume nearest the first event began at 18:23 UTC.
1 thunderstorm wind. Local standard time, as filed.
A weak microburst from a collapsing thunderstorm produced sub severe wind gust that damaged a batting cage and a bleacher at a baseball diamond.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2020Every state in 2020This day in weather historyWarnings in Florida, August 2020
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: 902763.