textproduct: Key West

KEY MESSAGES

- Concerns for moderate to major heat risk will continue through the weekend as high temperatures climb into the upper 80s with dew points in the mid 70s. Nighttime hours will offer little to no relief with lows near 80F.

- Rain and thunder chances will remain near zero for the Keys through the weekend, and only a slight chance by Monday night. This will also exacerbate existing drought conditions across the Keys.

- The next opportunity for some shower or thunderstorm development may be early next week, but even then only a slight chance exists.

SHORT TERM FORECAST

The 00z evening sounding remains dry once again. There is some moisture in the upper levels between 250-200 mb which can be linked to some of the cirrus clouds streaming from west to east across the Keys. The profile is unstable with a CAPE value measured of 1739 J/kg. Also, the wind profile displays subtle veering in the lowest 3000 ft which is more favorable for showers. The PWAT values continues to increase from previous nights. The PWAT measured tonight was 1.42 inches which is around the median for the date. Even though we have the instability, we still have dry air and lack of a trigger, therefore, no changes expected to the ongoing forecast.

MARINE

Issued at 1025 PM EDT Fri May 8 2026 There are currently no watches, warnings, or advisories in effect across the Florida Keys coastal waters. From synopsis, light to gentle east to southeast breezes, except gentle to moderate Straits, will continue through the weekend as high pressure continues to be the dominating feature in our weather pattern. Strong upper- level ridging across the Gulf eastward to the Bahamas will also yield near- nil rain and thunder chances through the weekend. As a weak frontal boundary approaches the Florida Keys early next week, there may be a brief slight uptick in rain and thunder chances.

AVIATION

(00Z TAFS) Issued at 1025 PM EDT Fri May 8 2026 VFR conditions are expected to persist through the TAF period at both EYW and MTH terminals. Near surface winds will mostly remain southeasterly through the period. Dry air remains entrenched across the Keys keeping rain chances nil.

PRELIMINARY POINT TEMPS/POPS

Key West 89 81 90 81 / 0 0 10 10 Marathon 86 81 87 82 / 0 0 10 10

KEY WATCHES/WARNINGS/ADVISORIES

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