Area Forecast Discussion
Issued by NWS Key West, FL
Issued by NWS Key West, FL
496 FXUS62 KKEY 280245 AFDKEY Area Forecast Discussion National Weather Service Key West FL 1045 PM EDT Wed Aug 27 2025 ...New DISCUSSION, MARINE, AVIATION... .DISCUSSION... Issued at 926 PM EDT Wed Aug 27 2025 High pressure is swinging eastward through the eastern United States this evening. This along with weak lower level troughing aligned over the Florida Peninsula and has setup a weak confluence zone across our area. Meanwhile, the flow aloft is nebulous thanks to an early season mid latitude trough spanning eastern North America. This evenings sounding indicated ample moisture and CAPE with little to no inhibition. All this contributed to quite an active evening across the Keys. There were a couple of rounds of island cloud line activation, along with a mass emerging off of South Florida. Activity has since quieted down, but a few clusters persist. Little change is expected in the environmental setup through the overnight. Recent radar data indicates isolated incoming activity west of Andros Island. With that said, night time cooling should help to flatten out the lower level troughing some. That along with the fairly recent overturning should hold off heavy activity for the next several hours. However, low chance PoPs remain justified for later in the overnight as deep layered moisture and CAPE will remain ample. Expect overnight temperatures to sit broadly in the lower 80s with dew points in the mid to upper 70s. && .MARINE... Issued at 926 PM EDT Wed Aug 27 2025 High pressure swinging through the eastern United States, in concert with weak troughing aligned over Florida have contributed to light east to southeasterly breezes across Keys waters this evening. The environment has been quite unstable this evening, allowing for multiple rounds of island cloud line activity in addition to a cluster rolling off of South Florida. Clusters of showers and thunderstorms remain on our waters, mostly relegated to the Florida Straits and on our deep Gulf waters. && .AVIATION... (00Z TAFS) Issued at 926 PM EDT Wed Aug 27 2025 VFR conditions will prevail at the island terminals overnight. With that said, there will be a chance for sub VFR conditions due to seasonable nocturnal convective activity. Surface winds will be light out of the east to southeast. && .KEY WATCHES/WARNINGS/ADVISORIES... FL...None. GM...None. && $$ Public/Marine/Fire...11 Aviation/Nowcasts....11 Data Acquisition.....DR Visit us on the web at weather.gov/key Follow us on Facebook and Twitter at: www.facebook.com/nwskeywest www.twitter.com/nwskeywest