725 FXUS64 KJAN 111509 AAA AFDJANArea Forecast Discussion...UPDATED National Weather Service Jackson MS 1009 AM CDT Thu Sep 11 2025
...New MESOSCALE UPDATE...
.MESOSCALE UPDATE... Issued at 1003 AM CDT Thu Sep 11 2025
Warmer than normal temperatures and dry weather is expected today. The very light and patchy fog that developed early this morning has dissipated. There is an upper level disturbance well to our north producing some mid and high clouds that our northwest flow aloft may bring into our CWA this afternoon but strong insolation is expected across most of our CWA. /22/
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.DISCUSSION... Issued at 1234 AM CDT Thu Sep 11 2025
Today through tonight:
Upper and surface ridging will continue to prevail across the area today and this will continue through tonight. The upper ridge will strengthen over the area today and this will result in temperatures being a couple of degrees hotter, ranging from the low to mid 90s. Clear skies will continue tonight, with possibility of some light patchy fog. Overnight lows will mostly be in the mid to upper 60s./15/
Thursday night through Tuesday night:
Thursday evening, the omega block with ridging over the central CONUS and troughing over east and west will still be in place. This pattern looks to last through early next week even as the ridge axis shifts to become centered nearly over the Mississippi river. The surface ridging from the northeast will continue over our region as well. This will contribute to a warming trend through the period with highs topping out in the mid to upper 90s by Monday. The surface ridge will continue to help limit moisture return and although it will be hot, the lower relative humidity will mitigate and heat stress concerns as peak heat index values look to remain below 105F. The latest Drought Monitor showed abnormally dry to moderate drought conditions across our northern zones. Without any rainfall in the forecast along with the hot temperatures, conditions are expected to worsen. /22/
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.AVIATION... (12Z TAFS) Issued at 638 AM CDT Thu Sep 11 2025
VFR conditions and light winds will prevail through the period./15/
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.PRELIMINARY POINT TEMPS/POPS... Jackson 93 69 94 67 / 0 0 0 0 Meridian 91 67 92 65 / 0 0 0 0 Vicksburg 94 70 95 68 / 0 0 0 0 Hattiesburg 94 67 95 65 / 0 0 0 0 Natchez 93 69 95 67 / 0 0 0 0 Greenville 94 69 95 68 / 10 0 0 0 Greenwood 95 69 96 67 / 0 0 0 0
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.JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. &&
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22/15
NWS JAN Office Area Forecast Discussion