Area Forecast Discussion
Issued by NWS Key West, FL
Issued by NWS Key West, FL
049 FXUS62 KKEY 180332 AFDKEY Area Forecast Discussion National Weather Service Key West FL 1032 PM EST Mon Nov 17 2025 ...New DISCUSSION, MARINE, AVIATION... .KEY MESSAGES... -Light to gentle breezes will continue through tonight before slowly freshening and becoming northeast to east heading into Tuesday. -Dry air will limit shower development through much of the week. -Another day of slightly below normal temperatures today with slow warming of temperatures to near 80F by mid week and then lower 80s for late week into the weekend. && .DISCUSSION... Issued at 1030 PM EST Mon Nov 17 2025 Another quiet evening is ongoing across the Florida Keys. Conditions are very similar to 24 hours ago. Light to gentle north to northeast breezes are observed along the nearshore waters of the Keys with temperatures generally in the lower 70s with dew points in the mid 60s. The Big Pine RAWS is once again the cool outlier currently reading a temperature of 63 degrees with a dew point of 60. KBYX radar is clear of precipitable echoes and yet GOES-19 Nighttime Microphysics shows a large swath of high level clouds painted across the Straits of Florida and edging towards the island chain. This is due to a low level cyclonic circulation generating convection south of Cuba. Ridging over the Ohio River Valley will march east overnight and continue to build a surface high along the Eastern Seaboard. This will eventually promote gentle to moderate northeast to east winds across our CWA tomorrow. Meanwhile, this evening`s KKEY 00z sounding is more moist than yesterday with a PW finally over an inch likely due to increased mid level moisture from the higher cloud debris. That being said, PW is still near the 25th percentile for this time of year and a massive inversion above 800 mb will keep rain chances near nil in the short term. Inland ares may experience radiational cooling due to lighter breezes resulting in temperatures approaching dew point values and possibly a thin layer of fog similar to the previous morning. && .MARINE... Issued at 1030 PM EST Mon Nov 17 2025 No watches, warnings, or advisories are currently in effect for the coastal waters of the Florida Keys. From synopsis, a high pressure system currently over the Lower Ohio Valley will slide east into the Mid-Atlantic through Tuesday while slowly strengthening. This will promote freshening northeast to east breezes for mid week. This high will continue moving into the western North Atlantic elongating and maintaining strength as it does so. This will allow for continued moderate to fresh breezes through late week. && .AVIATION... (00Z TAFS) Issued at 1030 PM EST Mon Nov 17 2025 VFR and dry conditions will prevail at both EYW and MTH tonight and into tomorrow. Near surface winds will be generally out of the northeast and light, then veering and freshening into tomorrow afternoon. && .PRELIMINARY POINT TEMPS/POPS... Key West 69 79 71 80 / 0 10 10 0 Marathon 69 79 72 80 / 0 10 10 0 && .KEY WATCHES/WARNINGS/ADVISORIES... FL...None. GM...None. && $$ Public/Marine/Fire...JAM Aviation/Nowcasts....JAM Data Acquisition.....MC Visit us on the web at weather.gov/key Follow us on Facebook and Twitter at: www.facebook.com/nwskeywest www.twitter.com/nwskeywest