


Area Forecast Discussion
Issued by NWS Huntsville, AL
Issued by NWS Huntsville, AL
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281 FXUS64 KHUN 200235 AFDHUN Area Forecast Discussion National Weather Service Huntsville AL 935 PM CDT Sat Apr 19 2025 ...New NEAR TERM, SHORT TERM, LONG TERM... .NEAR TERM... (Rest of tonight and Sunday) Issued at 935 PM CDT Sat Apr 19 2025 As an upper level low continued to barrel through the southern Plains, the Tennessee Valley remains in an area of PVA ahead of a deepening trough axis moving eastward into the area as we approach the early part of the week. Dry conditions persist for now due to the Atlantic high slowing down the progression of the aforementioned low pressure system and subsequent cold front. Cloud cover, however, has not been discouraged as southerly winds bring Gulf moisture into the area. This will allow for relatively warm low temperatures overnight-- remaining in the low to mid 60s. Easter Sunday brings continued dry conditions ahead of the cold front well to our west. High temperatures are forecast to reach the mid 80s under mostly cloudy skies. As the pressure gradient increases ahead of the incoming low pressure system, gusty winds up to 20-25 mph are forecast as a result during the afternoon hours and will persist through Monday. && .SHORT TERM... (Sunday night through Tuesday) Issued at 935 PM CDT Sat Apr 19 2025 As the upper level low moves eastward toward the Tennessee Valley, low to medium rain chances (20-50%) make their debut in NW AL late Sunday night into Monday morning ahead of the cold front`s arrival. Shower/thunderstorm chances are forecast to gradually make their way eastward and increase throughout the late morning/afternoon hours. While greater instability remains south of our area, there is a low-medium chance we could have a few stronger storms capable of producing gusty winds up to 40-50 mph and small hail with DCAPE values around 300-500 J/kg as well as deep low level lapse rates. In addition to this, moderate to heavy rainfall could produce ponding of water in areas of poor drainage or low- lying areas as PWATs near the 90th percentile per BMX sounding climatology. Something we will be keeping an eye on to limit strong storm potential will be how much the cloud cover and precipitation during the morning hours limit instability during the afternoon. Gusty, non-thunderstorm winds up to 20-25 mph persist through Monday night as the increased pressure gradient continues to influence the area. However, this is below local Wind Advisory Criteria. Medium to high rain chances (40-80%) are forecast to persist through Tuesday as the front pushes southeastward through the area and becomes stationary, bringing around an inch of rainfall to the Tennessee Valley (with up to 1.25-1.5" in areas south of the Tennessee River where heavier showers/thunderstorms are more likely). Rainfall chances are forecast to decrease (but not completely diminish) Tuesday night, dropping to around 30%. High temperatures during this time remain in the 70s-80s with overnight lows dropping into the 60s. && .LONG TERM... (Tuesday night through Saturday) Issued at 935 PM CDT Sat Apr 19 2025 An unsettled pattern continues through the long term period with several small shortwaves influencing the area, causing prolonged low-medium rain chances through the week. After the aforementioned cold front becomes stationary on Tuesday, it is forecast to make its way back northwestward and return with another round of rainfall. High temperatures through the week are forecast to remain in the 80s with overnight lows in the 60s. For those who are already tired of the warmer weather, the ongoing cloud cover will provide relief from the heat as it persist through the weekend. && .AVIATION... (00Z TAFS) Issued at 607 PM CDT Sat Apr 19 2025 VFR conditions are forecast to continue through the TAF period at both KMSL and KHSV. Gusty, southerly winds up to 16-18 kts are forecast to move into the Tennessee Valley around 14-15Z Sunday and persist through the TAF period. && .HUN WATCHES/WARNINGS/ADVISORIES... AL...None. TN...None. && $$ NEAR TERM...HC SHORT TERM....HC LONG TERM....HC AVIATION...HC