Area Forecast Discussion
Issued by NWS Huntsville, AL
Issued by NWS Huntsville, AL
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325 FXUS64 KHUN 171836 AFDHUN Area Forecast Discussion National Weather Service Huntsville AL 136 PM CDT Tue Sep 17 2024 ...New NEAR TERM, SHORT TERM... .NEAR TERM... (Tonight) Issued at 136 PM CDT Tue Sep 17 2024 High pressure continues to remain the dominant weather feature across the Tennessee Valley and is promoting dry and generally clear conditions across the region. Scattered to broken decks of mid to high clouds from a stalled low over the Carolinas have infiltrated the eastern half of the area -- creating partly to mostly cloudy conditions. Expect these clouds will thin later this evening and overnight, with mostly clear and calm conditions forecast across the region -- allowing temperatures to fall into the lower 60s. This will also create a very favorable setup for radiation fog, especially across northwest Alabama and the Bankhead National Forest (where heavy rainfall occurred last weekend). This fog will develop late this evening and may become locally dense late tonight into early Wednesday morning. && .SHORT TERM... (Wednesday through Friday) Issued at 136 PM CDT Tue Sep 17 2024 The area of low pressure to our east will shift NE into the Mid Atlantic region as a ridge of high pressure over south Texas expands eastward into the Lower Mississippi and Tennessee Valley mid to late week. The end result will be continued mostly clear and dry weather and a gradual warming trend by the end of the work week. Highs will gradually rise to the lower 90s by Friday, with model soundings showing a very dry profile indicative of strong subsidence from the ridge. && .LONG TERM... (Friday night through Monday) Issued at 157 AM CDT Tue Sep 17 2024 High pressure will remain the dominating feature through the long term forecast. Mid level ridging will build in from the SW and remain through the weekend. While the overall trend will be clear and dry conditions with temps in the high 80s to low 90s, we will be monitoring any impacts from an upper low tracking east across the CONUS. Being on the eastern periphery of high pressure will place us in a NW flow regime marking a favorable pattern for SE expansion of clouds and rain from the parent low. While the current forecast is dry, we will be monitoring how these two features interact (NW flow from high pressure and low pushing east) over the next several days for any forecast changes. && .AVIATION... (18Z TAFS) Issued at 1226 PM CDT Tue Sep 17 2024 VFR conditions will continue this afternoon and evening. Areas of fog are forecast to develop late tonight into early Wednesday morning and have included a TEMPO for IFR conditions between 09-12z. A return to VFR conditions is forecast for the remainder of the period Wednesday morning. && .HUN WATCHES/WARNINGS/ADVISORIES... AL...None. TN...None. && $$ NEAR TERM...AMP.24 SHORT TERM....AMP.24 LONG TERM....RAD AVIATION...AMP