textproduct: Key West

KEY MESSAGES

- Rain and thunder chances will remain elevated (around 30%) through Thursday.

- Lower rain chances will ensue Thursday night, lasting through early next week.

- Conditions will remain seasonably warm and muggy, with heat indices approaching near 100F each afternoon through early next week.

DISCUSSION

Issued at 1040 PM EDT Wed Jun 10 2026 A decent line of showers has been stretched across the coastal waters from the distant Straits up into the Gulf waters for a majority of the evening. Within the last hour or so these showers have moved more easterly now allowing for some shower activity over the Lower Keys, though measurable rain has been limited as of now. Some showers in the Straits have gotten strong enough to briefly produce lightning strikes, but haven't been able to hold their strength. Temperatures across the island chain are currently in the lower 80s, and Nighttime Microphysics shows a mostly cloudy area. Across the Reef, winds are southeasterly at 10 to 15 knots. Overnight, the current showers will eventually start to diminish in coverage and strength as they lose steam therefore left the 30% for tonight. Winds will slightly slacken as high pressure moves further east tonight. No changes were made to this update package.

MARINE

Issued at 1040 PM EDT Wed Jun 10 2026 No watches, warnings, or advisories are currently in effect for the Florida Keys waters. From synopsis, a high pressure system over the North Atlantic will support gentle east to southeast breezes across the Florida Keys coastal waters. Shower and thunderstorm coverage will peak tonight, owed to the peripheral moisture surge from a Central American Gyre near the Yucatan Peninsula. The high pressure system will move further east into the North Atlantic overnight, allowing breezes to slacken to light to gentle. As the Gyre shifts slightly westward, the moisture plume will also shift west of the Florida Keys marine zones, supporting a drier pattern through the weekend.

AVIATION

(00Z TAFS) Issued at 1040 PM EDT Wed Jun 10 2026 VFR conditions will prevail at both EYW and MTH through the TAF period. VCSH is included at EYW for nearby shower activity and TEMPOs will be included if direct impacts are expected. Currently there are no showers near MTH but if these showers continue to shift easterly than VCSH will be included at a later issuance. Near surface winds will be southeasterly at near 10 knots through the overnight period.

KEY WATCHES/WARNINGS/ADVISORIES

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