Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM Marine Forecast
| Today...Northeast To East Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: Northeast To East 3 Feet At 5 Seconds. Showers Likely With A Chance Of Thunderstorms. |
| Tonight...East Winds 10 To 15 Knots, Decreasing To Near 10 Knots Late. Seas 2 To 3 Feet. Wave Detail: Northeast To East 3 Feet At 6 Seconds. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Tuesday...East Winds Near 10 Knots, Decreasing To 5 To 10 Knots. Seas 2 To 3 Feet, Subsiding To Around 2 Feet. Wave Detail: Northeast To East 2 Feet At 6 Seconds. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Tuesday Night...East Winds 5 To 10 Knots, Decreasing To Near 5 Knots. Seas Around 2 Feet, Subsiding To 1 To 2 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Wednesday...Northeast Winds Near 5 Knots. Seas 1 To 2 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Wednesday Night...North To Northeast Winds Near 5 Knots. Seas Around 1 Foot. |
| Thursday...North Winds 5 To 10 Knots. Seas Around 1 Foot. A Slight Chance Of Showers. |
| Thursday Night...North To Northeast Winds 5 To 10 Knots. Seas Around 1 Foot. |
| Friday...North To Northeast Winds 5 To 10 Knots. Seas Around 1 Foot. |
| Area Forecast Discussion National Weather Service Key West FL 512am EST Monday Nov 2 2026 .SHORT TERM... (Today and tonight) Issued at 400am EST Monday Nov 2 2026 A sloppy pattern is in place across the forecast area as the overnight shift has seen plenty of showers and thunderstorms on our KBYX radar throughout the overnight hours. GOES-19 water vapor imagery depicts a disturbance parked over the eastern Gulf this morning. CIMSS vorticity analysis indicates that this feature may be confined to the lower to mid levels as there seems to be a loss of vertical continuity between 500mb and 200mb. Closer to the surface, storm motion on radar shows some confluence aiding in lift, so the current activity is likely to continue into the early morning hours. MRMS estimations highlight 6-hour rainfall amounts of nearly three quarters of an inch across portions of the Lower Keys, but the true rainmakers have remained over the local waters. There are a few bullseyes across the western Florida Straits where 3 to 5 inches may have fallen in the past six hours. Satellite-derived PWAT (Precipitable Water) shows a swath of values near 2 inches across the area, which is just above the 90th percentile for this time of year. All of this is to say that our rain and thunder chances will remain elevated through today as the aforementioned feature percolates over the eastern Gulf. Expected rainfall amounts along the island chain for today and tonight are up to an inch, which is fairly manageable over that timeframe. However, similar to yesterday, there will be pockets of heavier/stronger showers and thunderstorms. If any of these pockets traverse the island chain, rainfall amounts will skew higher. If heavier showers occur around the times of our higher tides, this could exacerbate flooding as well. The Coastal Flood Statement remains in effect to address the elevated high tides, but additional flood products may be needed if the stronger showers cross the Keys. The inherited forecast advertises a 70% chance of rain today decreasing to 50% tonight, and this seems reasonable given the ingredients in place. No changes or updates are needed with this early morning update. Marine Issued at 400am EST Monday Nov 2 2026 Small Craft Should Exercise Caution until winds decrease across eastern portions of the Florida Straits. Elevated chances for showers and thunderstorms will continue through today, and will result in localized hazardous marine conditions at times. Activity will taper off later tonight, and conditions will improve thereafter. Drier weather with slackening winds will settle in through the remainder of the week. Climate On this day in Keys Weather History, in 2015, the daily record warm low temperature of 81F was recorded in Key West. This is also the warmest low ever recorded in November. Temperature records for Key West date back to 1872. NOAA Key West FL Office: Watches - Warnings - Advisories FL...Coastal Flood Advisory until 5am EST Tuesday for FLZ076>078. GM...None. |
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