Straits of Florida from Craig Key to West End of Seven Mile Bridge Out 20 NM Marine Forecast
| Today...Southeast To South Winds 15 To 20 Knots, Becoming South To Southwest 10 To 15 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet, Subsiding To 2 To 3 Feet. Wave Detail: Southeast To South 3 Feet At 5 Seconds. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Tonight...Southwest Winds 10 To 15 Knots, Becoming West To Northwest Near 15 Knots Late. Seas 2 To 3 Feet. Wave Detail: South 2 Feet At 5 Seconds. Showers With A Chance Of Thunderstorms. Winds And Seas Will Be Higher In And Around Thunderstorms. |
| Tuesday...North Winds 15 To 20 Knots, Becoming North To Northeast 20 To 25 Knots In The Afternoon. Seas 2 To 4 Feet, Occasionally To 5 Feet, Building To 4 To 7 Feet, Occasionally To 9 Feet. Wave Detail: Northeast 2 Feet At 5 Seconds And West To Northwest 2 Feet At 5 Seconds, Becoming Northwest To North 5 Feet At 5 Seconds. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Tuesday Night...North To Northeast Winds 20 To 25 Knots. Seas 5 To 8 Feet, Occasionally To 10 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Wednesday...Northeast Winds 20 To 25 Knots, Decreasing To Near 20 Knots. Seas 5 To 8 Feet, Occasionally To 10 Feet. Showers Likely With A Slight Chance Of Thunderstorms. |
| Wednesday Night...Northeast Winds Increasing To 20 To 25 Knots. Seas 6 To 8 Feet, Occasionally To 10 Feet. Showers Likely With A Slight Chance Of Thunderstorms. |
| Thursday...Northeast Winds 20 To 25 Knots. Seas 6 To 8 Feet, Occasionally To 10 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Thursday Night...North To Northeast Winds Near 20 Knots. Seas 5 To 8 Feet, Occasionally To 10 Feet. A Chance Of Showers. |
| Friday...North To Northeast Winds Near 20 Knots, Decreasing To 15 To 20 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. A Slight Chance Of Showers. |
| Friday Night...North To Northeast Winds 15 To 20 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. A Slight Chance Of Showers. |
| Area Forecast Discussion National Weather Service Key West FL 412am EDT Monday Mar 16 2026 Issued at 411am EDT Monday Mar 16 2026 The overnight started out on an explosive note with mini supercells taking shape to the northwest of the Lower Keys. These storms had quite a bit of rotation with them and likely produced strong winds just shy of being considered severe (58 mph). After a few hours of this, activity sudden diminished and the atmosphere was quiet. However, this feels like a deceptive quiet and have seen on occasion an isolated shower or thunderstorm Probability of Precipitation up. Most recently we had some precipitation move across portions of the Lower Keys between Sugarloaf and Ramrod Keys. Today will be characterized as a transition day. The Keys lie on the western periphery of a retreating surface high that is moving out across the Atlantic. This is in response to a strong surface low currently barreling through the Midwest States this morning. An attendent cold front stretches all the way down into the Bay of Campeche in the southwestern Gulf Basin. This front is poised to move through our area late tonight into early Tuesday. Before that happens, we will see winds slacken slightly as we transition between features. Looking at the low level steering flow, we will remain south. This southerly flow will act to inhibit daytime convection and therefore have lowered Probability of Precipitation for today down to 30 percent. Although the front is not expected to arrive until late tonight, we likely will see some showers and thunderstorms develop out ahead of the main line that will develop along the front. Eventually we do expect the cold front to catch up to this pre- frontal line of convection. There remains a Marginal Risk (1 of 5) for severe weather today, primarily this afternoon across the Southeast Gulf waters, then overspreading the rest of the area this evening and tonight. The main threat will once again be winds if strong thunderstorms should develop. In the wake of the front we expect cooler temperatures along with breezy to windy conditions quickly developing. In fact, we could be looking at a prolonged period of breezy to windy conditions as a strong high will fill in behind the front and maintain an enhanced pressure gradient across the area. In addition, it appears that this front will not make a clean sweep and will instead stall near or in the vicinity of the Keys Tuesday through Thursday. This is potentially setting up for a wet, but beneficial, weather pattern for the Florida Keys. Next upper level trough Thursday evening will help to finally kick out this stalled frontal boundary with drier conditions expected for the next weekend. Marine Issued at 411am EDT Monday Mar 16 2026 A threat for isolated showers and thunderstorms will continue this morning and gradually diminish through the late morning. Expecting additional showers and thunderstorms to develop this afternoon, mainly across the Southeast Gulf waters ahead of an approaching cold front. This cold front will also have showers and thunderstorms along its leading edge and a few storms may be strong with much higher winds than our usual springtime convection. The cold front will sweep through with freshening northerly breezes in its wake. Thereafter, a strong high pressure will filter in behind the front and will likely maintain a prolonged period of fresh to occasionally strong breezes. NOAA Key West FL Office: Watches - Warnings - Advisories FL...None. GM...None. |
Key West FL Radar
Southeast Radar