Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM Marine Forecast
| This Afternoon...East To Southeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: East To Southeast 3 Feet At 5 Seconds And West 2 Feet At 7 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Tonight...East To Southeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: East 3 Feet At 5 Seconds And West 1 Foot At 7 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Thursday...Northeast To East Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: Northeast To East 3 Feet At 4 Seconds And West 1 Foot At 7 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Thursday Night...Northeast To East Winds 10 To 15 Knots, Decreasing To Near 10 Knots. Seas 2 To 3 Feet. A Chance Of Showers And Thunderstorms. |
| Friday...East Winds Near 10 Knots. Seas Around 2 Feet. A Chance Of Showers And Thunderstorms. |
| Friday Night...East To Southeast Winds Near 10 Knots. Seas Around 2 Feet. A Chance Of Showers And Thunderstorms. |
| Saturday...Southeast Winds 5 To 10 Knots, Becoming Variable Near 5 Knots. Seas 1 To 2 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Saturday Night...Northeast To East Winds Near 5 Knots, Becoming East To Southeast 5 To 10 Knots. Seas Around 1 Foot. |
| Sunday...Southeast To South Winds 5 To 10 Knots, Becoming West To Northwest. Seas Around 1 Foot. |
| Sunday Night...West To Northwest Winds 5 To 10 Knots, Becoming Southwest To West. Seas Around 1 Foot. A Slight Chance Of Showers And Thunderstorms. |
| Area Forecast Discussion National Weather Service Key West FL 129pm EDT Wednesday July 22 2026 Marine Issued at 1135am EDT Wednesday July 22 2026 No watches, warnings, or advisories are currently in effect for the Florida Keys waters. From synopsis, as of 8am EDT, Tropical Storm Bertha was centered over the northern Gulf waters. Bertha is expected to continue moving slowly to the west-northwest or west tonight through Friday, moving Tropical Storm Bertha near or along the northern Gulf coast. Otherwise, an Atlantic ridge of high pressure will extend to the Florida Peninsula for the next several days. Gentle breezes will briefly become moderate overnight through early Thursday, then gradually slacken to light to gentle breezes by Friday, peaking overnight and lull during the day. Light winds are expected this weekend. .PREVIOUS Issued at 331am EDT Wednesday July 22 2026 A relatively benign overnight for the Florida Keys. Some moisture rounding the base of a ridge out across the Atlantic is pivoting through our far eastern areas this morning. This has allowed for some isolated showers to develop and occasionally pass over the Upper Keys. Most of these showers have been shallow with tops around 15 thousand feet, which has placed them below below the -20 degree celsius, which we look for as an indicator for lightning initiation. In face, surprisingly most of these showers are even below the freezing level. Otherwise, as the aforementioned ridge continues to nose back in to the west, this is maintaining an east to southeast across the area. Elsewhere, the National Hurricane Center continues to issue advisories on Tropical Storm Bertha. At 2 am, TS Bertha was located about 75 miles east of the Mississippi River Delta and continues a westward movement. Bertha does not pose a risk for the Florida Keys. As the ridge continues to move westward from the Atlantic, we will continue to be suppressed in the sense of vertical upward motion and rain chances will continue to be limited today through Thursday. Thereafter, moisture in association with an easterly wave will slowly filter into the region starting Thursday evening. Models disagree on which side will be the wettest and thereby the best chances for wetting rains. For now have trended Probability of Precipitation up for both Thursday night and Friday to account for this discrepancies until models get into better alignment. Beyond the end of the week, the forecast remains rather chaotic with models at odds with each other. Once this easterly wave passes through it will become a matter of whether troughing truly builds as equatorward as some models think. The ECMWF (European Centre for Medium-Range Weather Forecasts) has a trough that parks itself across the eastern U.S. including Florida and the Florida Keys for days. This would result in southwest to west winds and even brief periods of west to northwest winds. On the other hand, the GFS (Global Forecast System) has the trough held up further north across Central and Panhandle Florida, which would result in our winds returning east to southeast. A nearly polar opposite result. Unfortunately, given such outcomes, have tried a middle of the road approach for now with the understanding that this will likely change as we get closer to next week. NOAA Key West FL Office: Watches - Warnings - Advisories FL...None. GM...None. |
Key West FL Radar
Southeast Radar