Area Forecast Discussion
Issued by NWS Huntsville, AL

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091 FXUS64 KHUN 190516 AFDHUN Area Forecast Discussion National Weather Service Huntsville AL 1216 AM CDT Sun May 19 2024 ...New AVIATION... .NEAR TERM... (Tonight) Issued at 845 PM CDT Sat May 18 2024 Lingering convection from earlier this afternoon has just about diminished this Sat evening, as an upper trough axis begins to move east of the mid TN Valley. Given the rainfall from earlier coupled with light winds/lingering high clouds, some patchy light fog is possible overnight, mainly in the valley areas and near any large bodies of water. Overnight temps look to be fairly normal for this time of the yr, with early morning lows Sun mainly in the lower 60s/near 60F for most spots. && .SHORT TERM... (Sunday through Tuesday) Issued at 230 PM CDT Sat May 18 2024 After this low pressure system continues through the area and into the Carolinas, upper level ridging begins to influence the area and high sfc pressure filters in from the OH River Valley. This will allow dry and warm conditions through the latter half of the weekend and into the start of the work week, with highs in the 80s and lows in the 60s. With mostly clear skies, there will be little relief from the sun during the afternoon hours. Our Heat Risk in portions of the area on Tuesday is `Moderate`. This means our level of heat may affect most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. && .LONG TERM... (Monday night through Friday) Issued at 226 AM CDT Sat May 18 2024 Dry and warm conditions will continue into Tuesday, as upper level ridging amplifies over the area. Highs should approach 90 degrees in a few places. Lows should only drop into the mid 60s to near 70 Tue night. A storm system forecast to form over the Rockies and adjacent High Plains over the weekend will head to the NE, reaching the Great Lakes on Wednesday. A cold front trailing south of it will move across the area on Wed. Moisture convergence and lift preceding it will return medium chances (30-50%) of showers and thunderstorms beginning Tue night. Unsettled weather with scattered showers and thunderstorms will remain in the forecast into Thursday. Overall storm strength should remain "general" with a risk of strong outflow wind gusts, heavy downpours, and sudden and/or frequent lightning. Even with more clouds and rain chances, high temperatures on Wed/Thu should range in the mid/upper 80s, and lows in the 60s. && .AVIATION...
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(06Z TAFS) Issued at 1216 AM CDT Sun May 19 2024 Scattered to broken decks of stratus will linger across the Tennessee Valley overnight, promoting low-end VFR to MVFR conditions at time. Light fog development could also drop visibilities at both terminals to IFR levels around sunrise (and potentially LIFR conditions if the sky clears off). After fog dissipates, VFR conditions will prevail during the afternoon under a mostly clear sky.
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&& .HUN WATCHES/WARNINGS/ADVISORIES... AL...None. TN...None. && $$ NEAR TERM...09 SHORT TERM....HC LONG TERM....KTW AVIATION...AMP.24