


Area Forecast Discussion
Issued by NWS Huntsville, AL
Issued by NWS Huntsville, AL
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378 FXUS64 KHUN 051842 AFDHUN Area Forecast Discussion National Weather Service Huntsville AL 142 PM CDT Sat Jul 5 2025 ...New NEAR TERM... .NEAR TERM... (Tonight) Issued at 142 PM CDT Sat Jul 5 2025 Afternoon Cu continues to develop across the CWA with only a shower or two developing along the MS/AL state line so far. Any convection that develops through the rest of this afternoon is expected to remain west of I-65 and dissipate with sunset. Main hazards in storms will be gusty winds up to 40 mph, heavy rainfall and of course lightning. We hope that everyone is having a fun and safe holiday weekend, but stay weather aware aware. Remember, if you hear thunder or see lightning, you are close enough to be struck. And with temperatures peaking in the lower 90s this afternoon and heat index values up to 100 degrees, heat safety is imperative. Take breaks, stay hydrated and never leave a person or pet in a vehicle. Otherwise, overnight lows will be near normal in the upper 60s (NE AL) to the lower 70s (elsewhere) under mostly clear skies. && .SHORT TERM... (Sunday through Monday) Issued at 1050 AM CDT Sat Jul 5 2025 The upper low over the northeastern Gulf is shown by guidance to retrograde west through Monday, with TS Chantal weakening into a Tropical Depression and moving over the eastern portion of North Carolina and Virginia during this time. Meanwhile, an upper shortwave trough looks to progress slowly over the Midwest towards the Ohio Valley by Monday before weakening. At the surface, a cold front moves over the Midwest on Sunday, then over the Ohio Valley by Monday morning. This feature will then approach the Tennessee Valley through the day. Overall, little to no rain chances are forecast on Sunday; although, would not be surprised if a few showers/storms formed in the afternoon based on trends from Friday the 4th as well as the current thinking for today. This will be monitored, but have very low (10%) chances of showers/storms Sunday afternoon. On Monday, chances of showers/storms increase to be low to medium (15-30%) as the aforementioned front approaches the region. Ample instability with highs reaching the lower to mid 90s in most locations as well as model DCAPE values between 1000-1300 J/kg will prompt another day with the potential for a few stronger storms capable of producing gusty downburst winds. With bulk shear below 20 knots, no severe weather is anticipated. With highs in the lower to mid 90s both Sunday and Monday and increasing moisture ahead of the surface cold front, heat indices are expected to reach the upper 90s to around 102 degrees by Monday afternoon. Although this is below Heat Advisory criteria, it will still be hot. Please stay safe and remember heat safety! && .LONG TERM... (Monday Night through Friday) Issued at 1010 PM CDT Fri Jul 4 2025 High pressure will begin to break down just of the Atlantic coast and begin building more over the Gulf to begin the work week. This will ultimately result in increasing chances for diurnally driven showers and storms beginning Monday. A weak frontal boundary may begin to approach the area as early as Tuesday into Wednesday, with PoPs increasing to 40-60% mainly focused during the afternoon and evening hours. Chances will increase closer to the frontal boundary on Thursday when it appears the front will push through the TN Valley. Although not currently outlooked for severe weather, some of these storms could be strong especially toward the later half of the week. Heat will continue to be a threat as afternoon heat indices remain between 100 and 105 each day. Flooding may have to be monitored towards the end of next week. && .AVIATION... (18Z TAFS) Issued at 1206 PM CDT Sat Jul 5 2025 VFR conditions were observed at the terminals at issuance. There is a low chance (10-15%) of showers/storms along and west of I-65 this afternoon; however, confidence is low if these would impact the TAF sites. Did not mention in the TAFs for now, but we`ll keep an eye on this through the afternoon and make amendments as needed. Any activity is expected to dwindle through the early evening, with no rain overnight. While patchy fog may be possible west of I-65 late tonight, confidence in lower VIS at HSV and/or MSL is low. Outside of any storms, south to southeast winds around 5 knots or so today will become calm tonight. Winds will then become more westerly and hover around 5 knots by Sunday afternoon. && .HUN WATCHES/WARNINGS/ADVISORIES... AL...None. TN...None. && $$ NEAR TERM...JMS SHORT TERM....26 LONG TERM....KTW AVIATION...26