Barometric Pressure Forecast for Seminole, Florida
Barometric pressure forecast for Seminole, Florida — on the Pinellas peninsula between the Gulf beaches and Tampa Bay. See current barometric pressure and what it means for weather-sensitive people.
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Pressure and weather in Seminole
Seminole sits barely twenty feet above sea level in the middle of the Pinellas peninsula, with the Gulf of Mexico five kilometres to the west and Tampa Bay a similar distance to the east. The narrowness of that strip produces the town's defining weather feature. On summer afternoons a sea breeze pushes inland from the Gulf while a bay breeze pushes westward from Tampa Bay, and the two collide almost overhead, forcing air upward and firing thunderstorms with a reliability that makes this stretch of coast the most lightning-prone in the United States. Those storms produce dramatic weather with almost no barometric signature beyond a brief mesoscale pressure jump as the gust front arrives. The real pressure events belong to the tropics. From June to November the approach of a tropical system brings long declines measured in days, and Pinellas County's low elevation and west-facing coast make storm surge the dominant risk rather than wind. Winter is the quiet season, with cold fronts arriving weakened after their long run down the peninsula, bringing rises of six to ten hPa, a day or two of dry northerly air, and then a rapid return to humidity.
What this means for you
Daily thunderstorms here barely move the barometer, while a distant tropical system moves it for days. A barometric pressure forecast separates the loud weather from the consequential kind.