E Gulf from 22N to 25N E of 87W including Straits of Florida Offshore Forecast
| Today...Ne To E Winds 10 Kt. Seas 3 Ft Or Less. |
| Tonight...Ne To E Winds 10 To 15 Kt. Seas 3 Ft Or Less. |
| Sun...Ne To E Winds 10 To 15 Kt. Seas 3 Ft Or Less. Scattered Showers And Isolated Tstms. |
| Sun Night...Ne To E Winds 10 Kt. Seas 3 Ft Or Less. |
| Mon...S Of 24n, E To Se Winds 10 Kt In The Morning, Becoming Variable Less Than 5 Kt. N Of 24n, E Winds 10 Kt. Seas 3 Ft Or Less. |
| Mon Night...E Winds 10 To 15 Kt. Seas 3 Ft Or Less. |
| Tue...Variable Winds Less Than 5 Kt. Seas 3 Ft Or Less. |
| Tue Night...Variable Winds Less Than 5 Kt, Becoming E To Se 10 Kt Late. Seas 3 Ft Or Less. |
| Wed...Variable Winds Less Than 5 Kt. Seas 3 Ft Or Less. |
| Wed Night...Variable Winds Less Than 5 Kt. Seas 3 Ft Or Less. |
| Area Forecast Discussion National Weather Service Key West FL 210pm EDT Sat September 20 2025 Marine Issued at 451am EDT Sat September 20 2025 No watches, warnings, or advisories are currently in effect for the Florida Keys waters. From synopsis, as drier air continues to push across the Keys and high pressure builds across the Eastern Seaboard, drier conditions, coupled with light to gentle northeast to east breezes, are expected through the weekend. This week, moisture will return, but winds will remain light to gentle. Issued at 1040am EDT Sat September 20 2025 Surface analysis places a sprawling area of high pressure over the Southeast, supporting light to gentle north to northeasterly breezes and mostly sunny skies on this September morning across the Florida Keys and the adjacent coastal waters. The 12z sounding at KEY sampled a moist, yet stable layer from the surface to around 850 mb, with an even more stable and dry layer throughout the rest of the troposphere. The inherited forecast calls for slight rain and thunder chances. Although it is tempting to take Probability of Precipitation out completely for today, there remains a low possibility of any convection over South Florida diving southwestward towards the Middle and Upper Keys late this afternoon or this evening. In addition, the mean low- level northeasterlies may support a broken cumulus cloud line to form along portions of the Lower Keys. Given these possibilities, will stick with the current forecast. .FORECAST... Issued at 451am EDT Sat September 20 2025 Through the weekend, the Keys will remain under the influence of a broad ridge aloft with weak synoptic forcing. Low-level northeast to east flow will continue to advect warm, humid air into the CWA (County Warning Area) though precipitable water values are expected to remain somewhat suppressed through Sunday from a relatively drier airmass overhead compared to the climatological norm. This should limit shower activity, although isolated pulse-like showers and thunderstorms can never be ruled out this time of year. With minimal convective inhibition, any showers that do form could briefly intensify before collapsing producing a few lightning strikes and gusty winds. By early next week, deeper tropical moisture will return back into the Keys as the ridge axis shifts. Increasing moisture will enhance instability and allow for more convection to develop. Have nudged Probability of Precipitation up to 40% though guidance is suggesting higher which will be re-evaulated as confidence increases. Towards late week, drier mid- level air may move in again reducing shower chances once again. Outside of convection, breezes throughout the week will remain light to gentle. NOAA Key West FL Office: Watches - Warnings - Advisories FL...None. GM...None. |