Area Forecast Discussion
Issued by NWS Key West, FL
Issued by NWS Key West, FL
602 FXUS62 KKEY 091040 AFDKEY Area Forecast Discussion National Weather Service Key West FL 540 AM EST Tue Dec 9 2025 ...New DISCUSSION, MARINE, AVIATION... .KEY MESSAGES... -Showers are possible through today as a weak frontal boundary lingers across the coastal waters. -Moderate to fresh breezes will prevail through early afternoon, therefore, Small Craft should exercise caution. -As the front moves out of the area winds will fluctuate between light to moderate through the remainder of the week and rain chances will return to near normal. && .DISCUSSION... Issued at 540 AM EST Tue Dec 9 2025 It`s been a busy KBYX overnight, though a majority of the activity has not impacted land. A cold front that moved into our coastal waters earlier yesterday has stalled in the Straits which is why the associated showers have lingered around. While there are numerous showers, thunderstorms are no longer a threat at this time. Temperatures along the island chain are in the lower to mid 70s and with dewpoints in the lower 70s, meaning it will be a moist morning. Across the Reef, winds are currently near 15 knots. While this front continues to weaken and leave through our distant Straits, the remainder of the week will be dominated by a relatively weak synoptic setup; a broad ridge resulting in mild, humid conditions. Winds will fluctuate between light to moderate and showers will be isolated to scattered at times. This will change in the extended forecast, as another potentially stronger cold front approaches Florida early next week. Associated with this front will be another increase in moisture and instability, resulting in higher rain and thunder chances. Post frontal, there will be a shift in wind direction (north to northeast), a slight relief with lower humidity, and drier conditions. && .MARINE... Issued at 540 AM EST Tue Dec 9 2025 Small craft should exercise caution for elevated winds and seas through early this afternoon. From synopsis, freshening north to northeast breezes are expected today as a result of a frontal boundary that moved across the Florida Keys overnight. The front will continue to linger across the distant Straits of Florida through the afternoon therefore higher shower coverage is expected in those waters. As the front departs our waters, breezes will then fluctuate between gentle and moderate during the week. && .AVIATION... (06Z TAFS) Issued at 540 AM EST Tue Dec 9 2025 While VFR conditions are expected to largely prevail at the terminals through the TAF period, both CIGs and visibility are likely to be briefly lowered at times, primarily towards MVFR and IFR categories, due to expected scattered showers throughout the TAF period. For the moment, opted to use TEMPO groups at both terminals to address this in the short term, while later occurrences will be covered by amendments and future routine issuances. VCSH is carried through the TAF period. Winds will persist from the north to northeast through the period. && .CLIMATE... On this day in 1928, the daily record low temperature of 53F was recorded at Key West. Temperature records for Key West date back to 1872. && .KEY WATCHES/WARNINGS/ADVISORIES... FL...None. GM...None. && $$ Public/Marine/Fire...AP Aviation/Nowcasts....MC 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