358 FXUS64 KBMX 171655 AFDBMXArea Forecast Discussion National Weather Service Birmingham AL 1155 AM CDT Wed Sep 17 2025
...New SHORT TERM, LONG TERM, AVIATION...
.SHORT TERM... (This afternoon through Thursday) Issued at 1154 AM CDT WED SEP 17 2025
Subtle disturbances will continue through the area, rotating around an upper low over the Chesapeake Bay region. These will continue to bring a low-end chance for isolated showers and maybe a storm or two over the next couple days. As referenced in the previous discussion, trends have indicated the need to introduce a 15-20% rain chance for tomorrow as well, which was done with this update. Nearly all CAMs have some semblance of isolated shower activity both this afternoon and tomorrow, continuing until at least 3z. For tomorrow, coverage should be more concentrated south of I-20, especially as the afternoon goes on. Isolated activity also isn`t out of the question overnight tonight, but is less certain.
High temperatures will continue to be forecast to reach the upper 80s to low 90s today and tomorrow.
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.LONG TERM... (Thursday night through next Tuesday) Issued at 1154 AM CDT WED SEP 17 2025
No changes are needed to the previous forecast thinking.
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Previous long-term discussion: (Thursday night through next Tuesday) Issued at 110 AM CDT WED SEP 17 2025
Above-normal warmth, by a margin of between 5-10 degrees, continues through late this week, along with nil to very limited shower/thunderstorm chances. A pattern of troughing is then progged to develop next week, which should allow us to shave a few degrees off temperatures with a chance for diurnally driven showers and thunderstorms, though chances are low at this time (~20 percent).
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.AVIATION... (18Z TAFS) Issued at 1154 AM CDT WED SEP 17 2025
All terminals should be VFR for the next 24 hours. There does exist a slight chance for an isolated shower/storm to affect a terminal this afternoon/evening, but coverage and confidence is too low to mention in the TAF at this time.
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.FIRE WEATHER...
D0 to D1 drought conditions are most prevalent across the western half of Alabama, though locations elsewhere are trending in this direction. Through the weekend, afternoon RHs as low as the low to mid 30s are forecast, along with minimal shower and thunderstorm chances. Light winds (
NWS BMX Office Area Forecast Discussion