563 FXUS64 KJAN 151120 AFDJANArea Forecast Discussion National Weather Service Jackson MS 620 AM CDT Wed Oct 15 2025
...New AVIATION...
.KEY MESSAGES...
- There is an increasing threat for thunderstorms this weekend, and we are monitoring for the potential for severe weather.
- Before then, dry weather with above normal temperatures will continue to be the general rule.
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.DISCUSSION... Issued at 356 AM CDT Wed Oct 15 2025
Today through Friday: The primary concern for this forecast will be with the increased thunderstorm threat this weekend, but before then, it will be more of the same through the remainder of the week with an unusually strong subtropical ridge remaining fixed over the Southern Plains to Lower MS Valley region. This will continue a long stretch of above normal temperatures and dry conditions, and it`s not out of the question for a few locations to reach 90 deg F in the next few days. /EC/
Global models continue to indicate a window of opportunity from late Saturday afternoon into at least the first half of Saturday night, where some potential for severe storms will exist across mainly the Delta region. This specific area is currently where the better conglomeration of wind shear, instability, and forcing is forecast to reside as a cold front moves into the forecast area. Damaging wind gusts to 60 mph will be the primary concern with such storms. There still remains some uncertainty in the exact evolution of this system and timing, in addition to the track of some key features, and whether or not there will be enough adequate level of instability in place ahead of the front. Therefore, please continue to monitor the latest forecast for the most up-to-date information concerning this severe potential this weekend. For now we continue to advertise a marginal/slight risk over northwest/northern portions of the area.
Rainfall totals across the forecast area during this time look to generally hover between 0.50-1.50 inches, with locally higher amounts possible. The higher QPF amounts continue to exist across the northern half of the CWA. This would be some much welcomed and needed rainfall for the area, but it won`t put much of a dent in the ongoing dry conditions.
The front will exit the region Sunday afternoon, and then a return to quiet conditions is expected for the remainder of the day and into the new work week. Conditions will be slightly cooler across the forecast area as we begin the week, with drier air and high pressure building into the Lower Mississippi River Valley. /19/EC/
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.AVIATION... (12Z TAFS) Issued at 620 AM CDT Wed Oct 15 2025
Quiet conditions will persist through the TAF period with VFR conditions prevailing. /CR/
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.PRELIMINARY POINT TEMPS/POPS... Jackson 86 59 89 62 / 0 0 0 0 Meridian 87 57 89 58 / 0 0 0 0 Vicksburg 86 59 89 62 / 0 0 0 0 Hattiesburg 90 58 91 60 / 0 0 0 0 Natchez 88 59 89 62 / 0 0 0 0 Greenville 86 57 87 62 / 0 0 0 0 Greenwood 87 58 89 62 / 0 0 0 0
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.JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. &&
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19/EC/CR
NWS JAN Office Area Forecast Discussion