MARCO ISLAND NAPLES NEWS

Tropical Wave Approaching South Florida Leads to Increasing Rain Chances This Weekend

Broad Gulf disturbance, tropical moisture to bring wetter pattern and afternoon storms to Collier County

MARCO ISLAND, Fla. — Southwest Florida residents should trade the umbrella for the sunscreen this weekend — and pack both. A broad area of low pressure churning in the eastern Gulf is pulling deep tropical moisture toward the Paradise Coast, and forecasters say that means a wetter, stormier pattern settling in over Marco Island and Naples through the weekend.

The National Hurricane Center is tracking the disturbance, designated Invest AL91, as a “broad surface low” over the eastern Gulf with disorganized shower and thunderstorm activity. As of the latest outlook, the system carries a 40 percent chance of tropical or subtropical development over the next 48 hours and a 50 percent chance over seven days as it drifts slowly northward.

Whether or not it ever earns a name, the system’s moisture is already the bigger local story. Rain chances have been climbing since Friday and are expected to keep rising into Saturday and Sunday, with the National Weather Service noting that “deeper moisture moving into the region this weekend will allow storms to become slower moving and more efficient rain producers.”

What It Means for Marco Island and Naples

• Timing: Look for the familiar Southwest Florida rhythm — building clouds by late morning, with scattered to numerous thunderstorms firing in the afternoon and early evening as sea breezes push inland.
• Rainfall: Coverage and intensity increase through the weekend as tropical moisture deepens, with heavier downpours possible in any one spot.
• Flooding risk: Because upper-level steering winds are expected to shift westward while surface winds hold out of the east-southeast, storms may train repeatedly over the same neighborhoods. That raises the risk of localized street flooding, particularly in low-lying areas and spots with poor drainage — a familiar concern for parts of Collier County during the wet season.
• Heat: The rain won’t bring relief from the heat. Highs are expected in the low-to-mid 90s, with humidity pushing heat index values into the 100-to-110-degree range each afternoon. Forecasters note that widespread, all-day rain — not scattered afternoon storms — would be needed to meaningfully cool things down, and that isn’t in the cards this weekend.
• The tropics, otherwise: Tropical Storm Bertha, which had been tracking through the Gulf earlier in the week, made its closest approach near the Louisiana coast and is weakening as it moves inland into Texas. It poses no direct threat to Florida.

The Bottom Line

Nothing about this weekend calls for evacuation-level concern — there’s no tropical storm or hurricane bearing down on Marco Island. But boaters, anglers, and beachgoers should plan around the daily threat of afternoon thunderstorms, watch for lightning and gusty winds, and give low-lying streets a wide berth during and after heavy downpours. Combined with dangerous afternoon heat, it’s the kind of weekend where the safest hours to be outside are early morning or early evening, well clear of the thunderstorm window.

Residents can track the disturbance’s development through the National Hurricane Center’s Graphical Tropical Weather Outlook, updated regularly throughout the day.

Weather conditions and tropical development can change quickly — check the latest National Hurricane Center outlook before finalizing weekend plans.

Sources: National Hurricane Center, National Weather Service