Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM Marine Forecast
| Tonight...North To Northeast Winds 20 To 25 Knots. Seas 5 To 8 Feet, Occasionally To 10 Feet. Wave Detail: Northeast 7 Feet At 7 Seconds And West To Northwest 2 Feet At 6 Seconds. A Chance Of Showers. |
| Friday...North To Northeast Winds 20 To 25 Knots, Decreasing To Near 20 Knots. Seas 5 To 8 Feet, Occasionally To 10 Feet, Subsiding To 4 To 7 Feet, Occasionally To 9 Feet. Wave Detail: North To Northeast 7 Feet At 7 Seconds And West To Northwest 1 Foot At 6 Seconds. A Slight Chance Of Showers. |
| Friday Night...Northeast Winds Near 20 Knots, Decreasing To 15 To 20 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. Wave Detail: Northeast 6 Feet At 7 Seconds And West To Northwest 1 Foot At 6 Seconds. A Slight Chance Of Showers. |
| Saturday...Northeast Winds Near 15 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet, Subsiding To 3 To 5 Feet, Occasionally To 6 Feet. |
| Saturday Night...Northeast To East Winds 10 To 15 Knots, Decreasing To Near 10 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. |
| Sunday...East Winds Near 10 Knots. Seas 2 To 3 Feet. |
| Sunday Night...East Winds 10 To 15 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. |
| Monday...Northeast To East Winds Near 10 Knots. Seas 2 To 3 Feet. |
| Tuesday...Northeast To East Winds Near 10 Knots. Seas 2 To 3 Feet. |
| Tuesday Night...Northeast To East Winds Near 10 Knots, Increasing To 10 To 15 Knots. Seas 2 To 3 Feet, Building To 2 To 4 Feet, Occasionally To 5 Feet. |
| Area Forecast Discussion National Weather Service Key West FL 231pm EDT Thu Mar 19 2026 Marine Issued at 940am EDT Thu Mar 19 2026 A Small Craft Advisory remains in effect for all Keys marine zones. From synopsis, high pressure building in behind the recent frontal passage will maintain fresh to occasionally strong breezes through tonight. Breezes will slacken appreciably beginning Friday, with light to gentle breezes expected for the weekend into early next week. Issued at 534am EDT Thu Mar 19 2026 Small Craft Advisory is in effect for all of the coastal waters and the current Reef observations support that recording near 20 knots. While showers are possible throughout today, models are suggesting a majority of the activity will remain in the Straits. High pressure has built in behind the recent cold front passage earlier in the week. This has resulted in fresh to occasionally strong breezes across the coastal waters. These fresh to strong breezes will start to slacken overnight into Friday as the high starts to lose it's grip. As the weekend unfolds, rain chances will decrease with only a slight chance expected through early next week. Temperatures will start to gradually warm back up from our brief cool temperatures, though the dew points will remain near 60 making for a pleasant few upcoming days! NOAA Key West FL Office: Watches - Warnings - Advisories FL...None. GM...Small Craft Advisory until 5am EDT Friday for GMZ031>035- 042>044-052>055-072>075. |
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