FXUS64 KJAN 151208 AAA AFDJAN Area Forecast Discussion...UPDATED National Weather Service Jackson MS 708 AM CDT Wed Apr 15 2026 ...New AVIATION... .KEY MESSAGES... - Areas of dense fog are possible this morning, especially in portions of southeast Mississippi. - There is a chance for showers and thunderstorms in the US Highway 82 corridor on Thursday. - Chances for more widespread shower and thunderstorm activity increase Saturday afternoon into Saturday night. && .DISCUSSION... Issued at 346 AM CDT Wed Apr 15 2026 Through This Morning: As we saw yesterday morning, moisture return into the region, in conjunction with radiational cooling overnight is creating a fog along the Mississippi and Alabama Gulf Coasts, spreading north into portions of southeast Mississippi. Issued a Dense Fog Advisory where confidence in areas of fog is greatest, but some patchy fog could develop farther north and west than the Pine Belt by sunrise as well. Today through Tuesday: Fog development is expected again late tonight into Thursday morning, spreading from the Gulf Coast into at least central Mississippi with advection/radiation effects. A dominant surface high and upper-level ridge over the Southeast US will blunt the chance for an approaching cold front to make its way too far south into our area on Thursday. Timing looks a little faster with the shortwave, and may miss best daytime heating. The 20-30% chances for showers and thunderstorms were trimmed back into the US Highway 82 corridor. A re-strengthening of the ridge will bring dry conditions back to the forecast area, and high temperatures on Friday will even flirt with 90 degrees for most locations in our forecast area. An amplifying upper-level pattern will bring a trough and cooler surface air into the High Plains by Friday night into Saturday. The resulting low pressure system will still be far to our north around the Great Lakes, but a stronger cold front should push through our area Saturday night into Sunday. Expect increased moisture ahead of the frontal passage, with the best chance (60%) of the next 7 days for showers and thunderstorms to impact the area. The surface high behind this system will be fairly strong for mid-April. 1025+ mb is about 1 to 2 standard deviations above normal across the Mid-South. Cooler weather is expected (and dry) in the wake of this frontal passage. Widespread low temperatures in the 40s are achievable Sunday night into Monday. /NF/ && .AVIATION... (12Z TAFS) Issued at 705 AM CDT Wed Apr 15 2026 Areas of dense fog and low stratus are producing widespread IFR to LIFR conditions in southern and eastern portions of the forecast area. Expect a lifting and mixing of the layer to prevailing VFR conditions at all sites by around 15Z-16Z today. Another round of IFR conditions around KHBG and KPIB is expected before 12Z Thursday. /NF/ && .PRELIMINARY POINT TEMPS/POPS... Jackson 84 63 86 64 / 0 0 10 0 Meridian 85 60 86 61 / 0 0 10 0 Vicksburg 86 63 87 65 / 0 0 10 0 Hattiesburg 85 62 87 62 / 0 0 10 0 Natchez 85 64 87 64 / 0 0 10 0 Greenville 86 67 86 66 / 0 10 30 10 Greenwood 86 66 85 66 / 0 0 20 10 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...Dense Fog Advisory until 9 AM CDT this morning for MSZ049>052- 055>058-063>066-072>074. LA...None. AR...None. && $$ NF