Straits of Florida from Craig Key to West End of Seven Mile Bridge Out 20 NM Marine Forecast
| This Afternoon...Northeast To East Winds 10 To 15 Knots. Seas 2 To 3 Feet, Building To 2 To 4 Feet. Wave Detail: Northeast 3 Feet At 5 Seconds. Isolated Showers. |
| Tonight...Northeast Winds Increasing To Near 20 Knots. Seas Building To 4 To 6 Feet, Occasionally To 8 Feet. Wave Detail: North To Northeast 4 Feet At 5 Seconds, Becoming North To Northeast 5 Feet At 6 Seconds. Isolated Showers. |
| Tuesday...Northeast Winds Near 20 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. Wave Detail: Northeast 6 Feet At 6 Seconds. Isolated Showers. |
| Tuesday Night...Northeast To East Winds Near 20 Knots, Decreasing To 15 To 20 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. Isolated Showers. |
| Wednesday...Northeast To East Winds 15 To 20 Knots, Decreasing To Near 15 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. Isolated Showers. |
| Wednesday Night...Northeast To East Winds Near 15 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. Isolated Showers. |
| Thursday...Northeast To East Winds Near 15 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. Scattered Showers. |
| Thursday Night...East Winds Near 15 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. Scattered Showers. |
| Friday...East Winds 10 To 15 Knots, Decreasing To Near 10 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet, Subsiding To 2 To 3 Feet. Scattered Showers. |
| Friday Night...East Winds 5 To 10 Knots, Becoming East To Southeast. Seas Around 2 Feet. Scattered Showers. |
| Area Forecast Discussion National Weather Service Key West FL 341pm EST Monday Nov 3 2025 Issued at 423am EST Monday Nov 3 2025 It has been a fairly quiet overnight across the Florida Keys. KBYX radar shows any remaining rain that was over the eastern Straits earlier in the night has moved off to the east. There were also some showers being detected to the west of the Straits of Florida over the southern Gulf waters. GOES East Nighttime Microphysics imagery shows mostly clear skies across the Keys as well as most of the cloud cover has also moved east out of the Keys coverage area. This has led to a comfortable night along the Island Chain. Temperatures are in the lower 70s with dew points near 70 degrees. The Keys remain in a col region for now with all significant weather systems remaining either east of the area or northwest of the region. This is resulting in marine platforms observing mainly light north to northeast breezes. .FORECAST... The main story going forward will be an approaching cold front later today. This front is connected to a developing area of low pressure off the North Carolina coastline. The front is draped south-southwestward through the central Florida Peninsula and into the central Gulf. As the aforementioned low pressure area continues to strengthen and move northeastward, a strong surface high pressure will build in behind it which will help to push the front southeastward towards the Keys. We expect frontal passage sometime this afternoon into this evening. This will result in freshening breezes initially across the western waters this afternoon and then across the entire area tonight. Therefore, expect another period of breezy conditions out of the north to northeast tonight. The surface high will traverse across the Southeast U.S. tonight through Wednesday before emerging into the western North Atlantic. As it does so the high will flatten and weaken as it continues moving eastward farther out to sea mid to late week. This will keep breezy conditions initially through Tuesday night with slackening breezes thereafter. Slight rain chances are anticipated today and tonight as the front presses through before the deeper dry air moves in. Mid to late week will see moisture starting to return, resulting in increasing rain chances. The period starts out with slight chances across the Island Chain as most of the moisture will initially be pooling north of Cuba and across the southern Straits of Florida. However, as the week progresses, we expect this moisture to continue bleeding northward as well as becoming deeper through the column. This will result in chances of rain for late week into the weekend. Marine Issued at 423am EST Monday Nov 3 2025 Small Craft Should Exercise Caution (SCEC) for increasing winds this afternoon is headlined for the nearshore waters surrounding the Lower Keys, the offshore Gulf waters, and the western Straits of Florida. In addition, Small Craft Advisory likely will be required tonight is headlined for the offshore Gulf waters, all the Florida Straits all of Hawk Channel, as well as the nearshore waters north of the Lower Keys. Meanwhile, a Small Craft Advisory may be required tonight is headlined for the nearshore and bay waters north of the Middle and Upper Keys. From synopsis, north to northeast breezes are expected to freshen today as a cold front approaches and then surges through the area. In the wake of the front, strong surface high pressure slowly migrates eastward across the Southeast U.S. which will maintain moderate to fresh breezes. Thereafter, breezes slacken as the ridge moves further out into the Atlantic and weakens. NOAA Key West FL Office: Watches - Warnings - Advisories FL...None. GM...Small Craft Advisory GMZ033>035-042-043-052-053-072-073. |
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