


Area Forecast Discussion
Issued by NWS Huntsville, AL
Issued by NWS Huntsville, AL
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895 FXUS64 KHUN 272250 AFDHUN Area Forecast Discussion National Weather Service Huntsville AL 550 PM CDT Thu Mar 27 2025 ...New AVIATION, CLIMATE... .NEAR TERM... (Tonight) Issued at 212 PM CDT Thu Mar 27 2025 As sfc high pressure filters in from the east, dry weather continues overnight. However, cloud cover is forecast to increase ahead of an upper level shortwave as it continues to move closer towards the area, into the lower Mississippi Valley, from the west. Low temperatures overnight are forecast to drop into the upper 40s to mid 50s, with warmer temperatures remaining mostly west of I-65 where cloud cover will move in sooner. && .SHORT TERM... (Friday through Sunday) Issued at 1045 AM CDT Thu Mar 27 2025 The aforementioned shortwave trough continues to move through the lower Mississippi Valley, bringing Gulf moisture and subsequent cloud cover to northern AL and southern middle TN. While temperatures are currently forecast to reach the upper 70s, there is a chance these are a few degrees too high if cloud cover remains dense throughout the day. Low shower chances (20-30%) are forecast to return to the area Friday night into Saturday as the shortwave trough lifts northeastward. Shower/thunderstorm chances increase Saturday afternoon into the evening hours (30-55%) as low instability will be available for thunderstorm formation. However, strong/severe storms are not forecast at this time. This will, however, be something to keep an eye on as far as how much rainfall we receive ahead of Sunday evening/Monday morning`s severe event. If we receive over 1.5 inches of rainfall, this could increase our flash flooding threat Sunday night into Monday in those areas. A lull is forecast Sunday morning before thunderstorms return the forecast Sunday evening/overnight, however, low chances of showers remain in the forecast during this time (~20-30%) ahead of the cold front as there is a low chance we could see pre-frontal showers ahead of the main risk of strong/severe storms. More details on the system of concern will be in the long term section below, however, we encourage everyone to check back in for updates as we approach the weekend as we work on refining timing and hazards for the event. && .LONG TERM... (Sunday night through Wednesday) Issued at 1016 PM CDT Wed Mar 26 2025 The main focus for this forecast will be on another system or series of smaller shortwaves moving through late Sunday into Monday that could result in strong to severe storms over portions of the TN Valley and Deep South. There are still a lot of questions regarding the trajectory of this system as well as the timing, and that will have large impacts on the ingredients needed for severe storms. The current timing looks to be late Sunday into Monday morning, but the latest guidance suggests the storm system could be slowing down to be a primarily Monday morning event for us. There are still questions regarding whether or not there will be a favorable overlap of shear and instability when the cold front moves through Monday morning, as the cold front is expected to be the main source of lift for these storms. This system will bear watching as we head closer to the weekend, so stay tuned for updates. Extended guidance favors a warm and active pattern for us heading through the middle part of next week, with highs mostly in the 70s and low (20-30%) chances for showers/storms each day. && .AVIATION... (00Z TAFS) Issued at 548 PM CDT Thu Mar 27 2025 VFR conditions are expected through the TAF period. Some mid level CIGS and wind shear will affect the terminals between 07Z and 10Z. Otherwise, southeast to southerly winds between 5 and 10 knot with gusts between 10 and 15 knots at times and high CIGS are expected. && .CLIMATE... Issued at 548 PM CDT Thu Mar 27 2025 Moderate Risk for Much Above Normal Precipitation: The Climate Prediction Center has included northwest portions of Alabama in a Moderate risk for Much Above Normal Precipitation for April 4th-6th. Precipitation exceeding 2 inches are possible during this period. More information on the CPC U.S. Hazards Outlook can be found at: https://www.cpc.ncep.noaa.gov/products/predictions/threats/threats.php && .HUN WATCHES/WARNINGS/ADVISORIES... AL...None. TN...None. && $$ NEAR TERM...HC SHORT TERM....HC LONG TERM....25 AVIATION...KTW