A strong seabreeze thunderstorm in Pinellas County caused roof damage and downed power lines.
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The episode as NWS TBW wrote it up.
A strong seabreeze thunderstorm in Pinellas County caused roof damage and downed power lines.
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 Jul 19, 1:11 PM EST, 59 minutes earlier.
Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 211 PM EDT Sun Jul 19 2020 .DISCUSSION... With an upper-level ridge parked overhead and the subtropical ridge axis remaining off to our east, our weather continues to be about the same as it has been. The one caveat is drier air that has made its way down the northern half of the peninsula. It has become very evident in satellite imagery that it is indeed drier, with only a modest cumulus field and weak vertical development. Across the central and southern half of the peninsula, deeper moisture exists, and showers and thunderstorms continue to fire. Updrafts are growing deeper, too. Unlike this morning, updrafts are now running in the 40- 50kft range now, suggesting better instability and more efficient ascent overall. This is expected to continue through the remainder of the afternoon before subsiding as dusk approaches with a loss of energy from the sun. With little change in our weather pattern for the next several days, this trend will continue until at least next weekend. Scattered showers and thunderstorms will develop each day and move towards the coast. Some days will see better coverage than others, but this pattern will generally remain for the next week. The one wild card is a tropical wave that NHC gives a 20% chance of development over the next five days. While not expecting significant impacts, this could lead to, potentially, the most widespread coverage of showers and thunderstorms on Tuesday along with slightly more breezy conditions and less ideal seas. It will ultimately depend on exactly where the center of this axis moves with respect to our area, but current model guidance suggests higher rain chances and elevated seas for Tuesday. Regardless, the general pattern remains in place with scattered showers and thunderstorms each day. && .AVIATION... Thunderstorms continue to develop near terminals. Brief periods of MVFR/IFR conditions are possible as storms pass, along with variable and potentially gusty winds. Continuing to monitor for potential AMDs to add relevant TEMPO groups. With ample instability and moisture, this will continue through 0Z before conditions quiet overnight. Showers and thunderstorms will be a concern again tomorrow afternoon. && .MARINE... Scattered showers and thunderstorms remain a concern each afternoon throughout the forecast period. Mariners should continue to keep an eye on storms that develop to the east as they will move towards coastal waters. As a tropical wave moves past the state Tuesday, elevated winds and seas may approach Exercise Caution criteria. Otherwise, seas of 3ft or less and 10-12kts of wind are expected. However, passing storms could lead to locally hazardous conditions. && .FIRE WEATHER... Ample instability and moisture will continue to promote the development of scattered showers and thunderstorms. Fire weather concerns remain low through the forecast period. && .Preliminary Point Temps/PoPs... TPA 76 94 77 94 / 20 40 20 70 FMY 76 93 77 91 / 20 50 30 80 GIF 75 94 75 93 / 10 40 20 60 SRQ 76 94 77 94 / 20 50 20 80 BKV 72 95 73 94 / 20 30 20 70 SPG 77 93 77 94 / 20 40 20 70 && .TBW WATCHES/WARNINGS/ADVISORIES... FL...None. Gulf waters...None. && Flannery
The Tampa radar (KTBW), 42 km away, was scanning. The volume nearest the first event began at 19:10 UTC.
1 thunderstorm wind. Local standard time, as filed.
Fire Department reports minor roof damage and a powerline down in Seminole Florida.
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, July 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: 895723.