Fort Pierce, Florida

Well defined outflow boundary is charging southward across southern Brevard and Osceola counties with a large area of rain with embedded storms behind it across lake...Volusia...Seminole and Orange counties. Meanwhile...isolated strong storms are developing along the inland-moving East Coast sea breeze across Indian River...Saint Lucie...Martin and Okeechobee counties. These storms will increase in coverage and intensity as the outflow boundary intersects storms and their outflows. The primary threat will be frequent to excessive cloud to ground lightning. A few storms may become severe with large hail and damaging downburst winds. Whenever there are multiple boundary collisions...there is the chance of a small brief tornado. Storm movement should show more purpose toward the east or northeast across the southern counties. Still...torrential downpours will produce a quick one to two inches of rain causing temporary flooding of low lying and poor drainage areas. Total rain accumulations around 3 inches will be possible in spots.