Thunderstorms, Flooding, Heavy Rain For North Florida

JACKSONVILLE, Florida – The National Weather Service in Jacksonville is forecasting continued hot, humid, and unsettled summer-like conditions across Northeast Florida and Southeast Georgia through at least Wednesday.

According to NWS Jacksonville, the risk of localized flash or urban flooding remains possible today due to tropical moisture, already saturated ground from recent rains, and the potential for slow-moving or training thunderstorms with heavy rainfall rates.

• Today (Monday, June 15): Scattered to numerous showers and thunderstorms expected, mainly this afternoon and evening. A few storms may produce gusty winds, frequent lightning, and brief heavy downpours. Expected rainfall generally 0.5–2 inches, with locally higher amounts possible. Urban and poor drainage flooding is possible in heavier cells, especially in areas already saturated.
• Monday through Wednesday: Daily afternoon and evening showers and thunderstorms likely. Additional rainfall amounts of 1–3+ inches widespread, with locally higher amounts possible where storms train or repeatedly affect the same areas. Marginal risk of excessive rainfall in the strongest cells.

According to NWS Jacksonville, summer-like conditions will continue with daily afternoon and evening thunderstorms, elevated heat indices, and the potential for gusty winds in stronger storms.

Key hazards this period include:

• Daily afternoon/evening thunderstorms with locally heavy rainfall, gusty winds (up to 40-60 mph in the strongest storms), and frequent lightning
• Urban, poor drainage, and low-lying area flooding possible due to saturated ground and heavy downpours — exercise caution on slick roads
• Heat indices of 103°–109°F today (peak heat midday through early evening) with high temperatures in the low to mid-90s; heat indices remaining elevated Tuesday and Wednesday
• Lightning safety critical – seek shelter in a building or hard-topped vehicle at the first sign of thunder or lightning

NWS Jacksonville is forecasting hot and humid conditions with a high chance of showers and thunderstorms mainly in the afternoon and evening. Scattered to numerous storms are expected today across the area.

Tropical moisture will continue to support daily thunderstorm activity. While the rain helps with wildfire suppression, long-term drought conditions persist and burn bans remain in effect for many counties.

With the ground saturated in many areas from recent heavy rain, even brief intense downpours this afternoon and evening could cause temporary urban and localized flooding. Motorists should exercise extra caution on slick roads.

Beachgoers should remain cautious of elevated surf and possible rip currents at Northeast Florida and Southeast Georgia beaches including St. Simons, Jekyll, Fernandina, Jacksonville, St. Augustine, and Flagler. Follow local beach patrol guidance.

North Florida and southeast Georgia locations expecting daily thunderstorms and elevated heat this period include: Gainesville, Ocala, Lake City, Starke, Palatka, Jacksonville (inland areas), Waycross, Brunswick, and Homerville.

Jacksonville Weather Forecast