561 FXUS64 KJAN 072346 AFDJANArea Forecast Discussion National Weather Service Jackson MS 646 PM CDT Tue Oct 7 2025
...New AVIATION...
.KEY MESSAGES...
- Scattered showers will diminish early this evening.
- Dense fog development is possible over southeast portions of the area late tonight into early Wednesday morning.
- Drier conditions with cooler mornings will return during the latter half of this week.
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.DISCUSSION... Issued at 102 PM CDT Tue Oct 7 2025
The semi-permanent subtropical ridge that has largely controlled the weather over our region the past few weeks will continue to be the primary influence for us going through the remainder of the week and into the weekend. This will result in more dry weather with seasonably warm temperatures that are a little above normal overall.
Through tonight: Scattered light showers associated with a weak cold front pushing slowly southeast into the area will diminish quickly with sunset. The combination of the weak frontal boundary moving into a very humid boundary layer will result in areas of fog over southeast portions of the forecast area, and we are messaging for a limited threat of dense fog. /EC/
Wednesday through Monday: Any fog should lift and dissipate by mid morning. Thereafter, the weak cold front will continue to shift south and eventually out of the area as we go into Thursday, bringing a noticeable decrease in moisture and humidity. This will significantly limit rain chances over the remainder of the week into early next week. While temperature change will be less significant behind the front, temperatures will cool a little more at night in the drier air than they have recently. /DL/EC/
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.AVIATION... (00Z TAFS) Issued at 643 PM CDT Tue Oct 7 2025
Generally VFR conditions will degrade to MVFR/IFR overnight, particularly for southern and eastern sites, as a weak frontal boundary brings low stratus and fog potential overnight until after dawn Wednesday. Conditions improve with the aid of daytime mixing after around 13Z with a light northerly wind prevailing. Winds could become somewhat gustier, 10-14 KT after 18Z. /86/
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.PRELIMINARY POINT TEMPS/POPS... Jackson 69 85 63 82 / 10 10 0 0 Meridian 68 85 61 82 / 10 10 0 0 Vicksburg 69 85 62 81 / 10 10 0 0 Hattiesburg 71 90 66 87 / 10 10 0 0 Natchez 68 87 64 83 / 10 10 0 0 Greenville 67 82 57 78 / 10 10 0 0 Greenwood 67 84 57 80 / 10 10 0 0
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.JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. &&
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EC/DL/LP
NWS JAN Office Area Forecast Discussion