JACKSONVILLE, Florida – The National Weather Service in Jacksonville is forecasting a localized flooding rainfall risk on Saturday, August 29, 2026, across Southeast Georgia and inland Northeast Florida, with storms expected to increase this afternoon along the coast before shifting west toward I-75 this evening.
According to NWS Jacksonville, a stalled frontal boundary and deep tropical moisture are supporting slow-moving or training thunderstorms.
Many locations have already received 1–2 inches of rain, with isolated totals of 3–5 inches as of 8 a.m. Saturday.
Additional heavy downpours are expected this afternoon and evening, especially from the I-95 corridor westward toward U.S. 301 and I-75.
- Today (Saturday, August 29): Storms increase this afternoon for coastal Northeast Florida, then shift west into the evening toward I-75. Isolated rainfall totals of 2–4 inches are possible. Flooding of low-lying, urban, and poor-drainage areas is possible.
- Sunday through early next week: Daily afternoon and evening showers and thunderstorms remain likely, with the flooding rain risk shifting more toward the I-75 corridor. Additional rainfall of a few tenths to 1+ inches is possible each day, with locally higher amounts where storms train over the same area.
Key hazards this period include:
- Localized flooding rain today from coastal Northeast Florida west toward I-75, with isolated 2–4 inch totals possible on already wet ground
- Urban, poor drainage, and low-lying area flooding possible this afternoon and evening — never drive through flooded roads
- Heat indices near 102°F today and around 103–105°F Sunday, with highs near 89–91°F
- Lightning safety critical – seek shelter in a building or hard-topped vehicle at the first sign of thunder or lightning
- Moderate rip current risk at Northeast Florida and Southeast Georgia beaches
The best chances for heavier rainfall amounts today are along and west of I-95 toward the U.S. 301 and I-75 corridors, including parts of Southeast Georgia and the Suwannee Valley. Urban areas can still see brief street flooding if storms stall…