textproduct: Key West

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

KEY MESSAGES

- Chance of showers and thunderstorms expected as an unsettled weather pattern continues into the early part of this week. - Mainly light to gentle broadly easterly breezes will continue through the weekend, though occasional periods of moderate breezes are expected.

- The Remnants of Dolly remain East of the Leeward Islands and may bring a period of much higher rain chances by the middle of the week.

DISCUSSION

Issued at 1030 PM EDT Sun Aug 30 2026

A broad surface ridge extending westward through the southeastern United States is maintaining light to gentle northeasterly to easterly breezes across the Keys this evening. Lower level ridging is in a bit more control over the area as earlier weak troughing is lifting out. In addition, upper level ridging has become established across the Florida Peninsula. Moisture does remain high with this evenings sounding indicated precipitable waters slightly above the 90th percentile for the date at 2.2 inches. Low level instability was limited with sufficient but thin CAPE above. After a flurry of showers and thunderstorms along a traffic jam of boundaries around the Lower and Upper Keys, activity has nearly completely died out.

Broad ridging will remain in control overnight and surface breezes will remain light to gentle, shifting easterly. Expect overnight lows in the lower to mid 80s with dew points remaining in the mid to upper 70s. Little change in the atmospheric profile is expected and shower and thunderstorm chances for the night will remain near to slightly above seasonal normals.

MARINE

Issued at 1030 PM EDT Sun Aug 30 2026

A broad surface ridge reaching westward across the Southeastern United States will maintain gentle to moderate northeast to easterly breezes. Winds will become more uniform easterly through the night. Only subtle wind direction transitions introduced for the evening marine update.

AVIATION

(00Z TAFS) Issued at 1030 PM EDT Sun Aug 30 2026

VFR conditions will prevail overnight at the island terminals. Shower and thunder potential will be near seasonal norms. Surface winds will be light to gentle out of the northeast to east, becoming east.

KEY WATCHES/WARNINGS/ADVISORIES

FL...None. GM...None.


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