textproduct: Key West

KEY MESSAGES

- Minor coastal flooding will continue across the Keys around high tide. Moderate coastal flooding will also be possible in the Upper Keys.

- Rain chances will be at or below normal through mid week, with dewpoints remaining in the lower 70s. - The first strong cold front of the season will likely push through the Keys late next week, with much cooler "sweater weather" possible in its wake.

DISCUSSION

Issued at 1030 AM EST Mon Nov 9 2026 The 12z sounding at KEY sampled rising geopotential heights from just above the surface through the 500 mb isobaric surface. This is consistent with low- and mid- level ridge bridging across the eastern half of the CONUS. Surface analysis places a sprawling high pressure system centered north of the Gulf coast. Anticyclonic flow around the high is supporting generally light to gentle easterly breezes across the Florida Keys at this late morning hour. The warmer easterly direction is supporting temperatures quickly rising into the low to mid 80s over the Island Chain. KBYX is only detecting a few isolated showers in a weak zone of confluence as the breezes turn easterly from east to west. We will need to watch for the possibility of a broken cloud line over portions of the Lower and Middle Keys today due to residual low- level moisture and island heating-induced heating supporting some confluence. Other than that, islands should remain dry, with temperatures topping out in the mid 80s. No changes proposed.

MARINE

Issued at 1030 AM EST Mon Nov 9 2026 A Coastal Flood Statement is in effect for the Florida Keys. Boaters can expect less clearance under fixed bridges, especially around the times of high tide.Elsewhere, no watches, warnings, or advisories are currently in effect. From synopsis, a robust high pressure system over the Southeast United States will slide eastward over the next few days. As a result, light to gentle northeasterly to east breezes will shift to the east and modestly freshen early this week. As the high slides further southeastward into the west-central North Atlantic, breezes will clock around to the east to southeast slacken by mid week. A strong cold front is expected push through the Keys marine zones on Friday morning, with breezes backing to the northwest and freshening in its wake.

AVIATION

(15Z TAFS) Issued at 1030 AM EST Mon Nov 9 2026 Although a broken cloud line will be possible along portions of the Lower and Middle Keys, impacts to visibilities and ceilings will be minimal, with VFR conditions prevailing at both terminals through the TAF period.

PRELIMINARY POINT TEMPS/POPS

Key West 85 76 85 76 / 10 20 10 10 Marathon 85 77 85 77 / 20 20 10 10

KEY WATCHES/WARNINGS/ADVISORIES

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