textproduct: Key West

KEY MESSAGES

- Increasing shower and thunderstorm chances expected through the week, peaking tonight through Thursday.

- Light to gentle east to southeast breezes through most of the week, though occasional moderate periods may occur at times.

UPDATE

Issued at 1035 PM EDT Tue Aug 25 2026 This evening's 25/00z KEY RAOB reveals a notable moistening trend compared to the 12Z sounding just 12 hours earlier as PWATs were sampled at 1.83 inches compared to 1.48 inches earlier today. Despite this moistening trend and virtually no inhibition to speak of, overall precipitation coverage this evening was rather limited as the only shower activity that was able to develop was in the Gulf waters north of the Lower Keys, but otherwise it has been largely rain-free so far. A regional satellite perspective still shows an MCV nearly stationary around Andros Island with a flare up of convection on the northern edge of this feature, but skies are mostly clear for the time being across the Florida Keys other than some high level cirrus streaming southward from convective debris over the mainland. Thus, expecting conditions to generally remain dry across the CWA through the late evening and early overnight hours but rain chances should generally increase into early Wednesday morning into the afternoon as southeasterly flow continues to advect deeper moisture into the area. Otherwise, expect overnight lows tonight into the low to mid 80s with no changes needed to the evening update at this time.

MARINE

Issued at 1035 PM EDT Tue Aug 25 2026 The western periphery of an Atlantic high is expected to maintain control of the Keys for the next several days. This will promote peaking and lulling east to southeast breezes. Breezes will peak in the evening through early morning and lull in the afternoons. The strongest surge of breezes is anticipated to be Wednesday night where mostly moderate breezes are expected throughout the Florida Keys coastal waters. In addition, the southeasterly flow will also keep deep moisture in place across the region with daily chances of showers and thunderstorms. Locally hazardous winds and seas are expected in the vicinity of thunderstorm activity.

AVIATION

(00Z TAFS) Issued at 931 PM EDT Tue Aug 25 2026 VFR conditions will generally prevail through the remainder of the evening and overnight hours but chances of SHRA/TSRA start to increase Wednesday morning into the afternoon hours. However, this activity will be scattered in nature with brief flight restrictions possible but this shouldn't result in long duration impacts. Either way, VFR conditions will prevail outside of any thunderstorm activity with winds out of the ESE throughout the period.

KEY WATCHES/WARNINGS/ADVISORIES

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