textproduct: Jackson

KEY MESSAGES

- Patchy fog development is possible this morning and tonight into Wednesday morning, especially south of Interstate 20.

- There is a chance for showers and thunderstorms on Thursday, but chances for more widespread shower and thunderstorm activity across the area increase for Saturday into Saturday night.

DISCUSSION

Issued at 216 AM CDT Tue Apr 14 2026

Through This Morning:

Moisture return to the region, in conjunction with radiational cooling overnight is creating a fog along the Mississippi and Alabama Gulf Coasts early this morning. HREF probabilities signal the possibility for at least patchy radiation/advection fog to spread up to around the Interstate 20 corridor by sunrise today. For now will highlight the potential for fog with a "Limited" fog threat graphic through the morning hours and monitor for any widespread dense fog development.

Today through Monday:

Given the returning humidity, will also let the current graphic for hazardous fire weather conditions expire. Dead fuel moisture values are above 15 percent at RAWS sites in the region, and vegetative greenup is underway. That said, cumulative drought stress means that caution should be exercised with dry vegetation on breezy days.

Fog development is expected again late tonight into Wednesday morning - again 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, but greater moisture and convergence in the frontal zone will support a 20-40% chance for showers and thunderstorms during the day on Thursday for areas mainly north of Interstate 20. A re-strengthening of the ridge will bring dry conditions back to the forecast, 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

(06Z TAFS) Issued at 1231 AM CDT Tue Apr 14 2026

VFR conditions prevail early this morning. Another round of fog or low stratus is possible across southeast MS mainly around daybreak, with categorical reductions possible. VFR conditions should return by mid-morning. Otherwise, southerly winds may be gusty at times during the daylight hours. Another round of fog or low clouds is possible Wed morning. /DL/

PRELIMINARY POINT TEMPS/POPS

Jackson 85 61 85 64 / 0 0 0 0 Meridian 85 57 85 61 / 0 0 0 0 Vicksburg 87 61 85 64 / 0 0 0 0 Hattiesburg 86 60 86 62 / 0 0 0 0 Natchez 86 62 85 64 / 0 0 10 0 Greenville 87 65 85 66 / 0 0 0 10 Greenwood 87 63 85 66 / 0 0 0 10

JAN WATCHES/WARNINGS/ADVISORIES

MS...None. LA...None. AR...None.