Straits of Florida from Ocean Reef to Craig Key out 20 NM Marine Forecast
| Tonight...East To Southeast Winds Near 10 Knots, Increasing To 10 To 15 Knots. Seas 1 To 2 Feet, Building To 2 To 3 Feet. Wave Detail: East 3 Feet At 4 Seconds. |
| Tuesday...East To Southeast Winds 10 To 15 Knots, Decreasing To Near 10 Knots. Seas 2 To 3 Feet. Wave Detail: East To Southeast 3 Feet At 5 Seconds. |
| Tuesday Night...Northeast To East Winds 10 To 15 Knots, Becoming East And Decreasing To 5 To 10 Knots. Seas 2 To 3 Feet, Subsiding To Around 2 Feet. Wave Detail: East 2 Feet At 5 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Wednesday...East To Southeast Winds Near 10 Knots, Becoming Northeast To East And Decreasing To 5 To 10 Knots. Seas Around 2 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Wednesday Night...Northeast To East Winds Near 10 Knots, Becoming East To Southeast And Increasing To 10 To 15 Knots. Seas 2 To 3 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Thursday...East To Southeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Thursday Night...East To Southeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. A Slight Chance Of Showers. |
| Friday...East To Southeast Winds Near 10 Knots. Seas 2 To 3 Feet. |
| Friday Night...East To Southeast Winds Near 10 Knots. Seas 2 To 3 Feet. A Slight Chance Of Showers. |
| Saturday...East Winds Near 10 Knots. Seas 2 To 3 Feet. |
| Saturday Night...East Winds Near 10 Knots. Seas Around 2 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Area Forecast Discussion National Weather Service Key West FL 1021pm EDT Monday Jun 22 2026 Issued at 1021pm EDT Monday Jun 22 2026 Another muggy night is unfolding across the Florida Keys. Dew points along the island chain from Key West to northern Key Largo are in the upper 70s tonight. Light to gentle easterly breezes are present along the reef, so the air is not as stagnant as the past couple of days. GOES East nighttime microphysics returns show indicate low level cloud cover is a bit more concentrated northwest of the Lower Keys. High altitude clouds are rather sparse, so stargazers may be in luck tonight. However, the lack of cloud cover and light to gentle breezes hints that radiational cooling could lower temperatures along the larger islands. Even though most of the radar is clear of meteorological echoes, sufficient moisture and instability exists in the atmosphere for showers to form. The KBYX radar did, in fact, detect isolated showers north of the Lower Keys this evening. The 00Z KKEY sounding does offer some explanation for how showers were able to form. The balloon sampled an environment with more than sufficient instability, over 2000 J/kg of MLCAPE with a PWAT (Precipitable Water) value above the 75th percentile for the day. Storm Prediction Center mesoanalysis suggests a weak convergence boundary is present where showers are flaring. There is low confidence these showers will be able to propagate back towards the island chain overnight. While it was not sampled by the evening sounding, there is high confidence that a plume of the Saharan Air Layer will move over the Florida Keys waters during the overnight hours. There are pretty good odds that those in the Keys will wake up to milky skies tomorrow morning. Thus, opting to leave the inherited forecast package alone. Marine Issued at 1021pm EDT Monday Jun 22 2026 There are no watches, warnings, or advisories in effect for the Florida Keys coastal waters. From synopsis, a broad, weak high pressure system stretching from the Gulf Basin, across the Florida Peninsula, and into the central North Atlantic will fluctuate in strength over the next several days. As a result, expect both wind speeds and direction to be primarily mesoscale driven and at times chaotic. By Wednesday night, the high will begin to gradually build and allow for a slow freshening of east to southeast breezes. NOAA Key West FL Office: Watches - Warnings - Advisories FL...None. GM...None. |
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