textproduct: Jackson

KEY MESSAGES

- Areas of dense fog are expected Sunday morning.

- Seasonable temperatures and mostly dry weather is expected this next week.

MESOSCALE UPDATE

Issued at 648 PM CST Sat Dec 6 2025

Areas of dense fog are expected to develop across the forecast area tonight as temperatures radiate, and moisture spreads northward. HREF guidance also shows decent probabilities for fog across the area, so have issued a Dense Fog Advisory for the entire CWA tonight through 9 AM Sunday. The rest of the short-term forecast remains on track. /NF/

DISCUSSION

Issued at 145 PM CST Sat Dec 6 2025

Tonight into Sunday morning: The primary concern will be fog development and the potential for dense fog. A warm advection pattern with a cool, humid boundary layer in place should bring widespread low stratus and fog tonight, but there is still some uncertainty with mixing strength and just how low visibility will be able to get. For now, have messaged a limited dense fog threat in the hazard graphics, and will continue to monitor for greater potential as we go into the evening.

Sunday afternoon through next week: A broad longwave trough over the central/eastern CONUS will continue to be the primary driver for weather in our region, resulting in mostly dry weather with seasonable temperatures. A weak shortwave trough crossing the Southern Plains tonight through Sunday will bring a quick round of mostly light shower activity late Sunday into Sunday night. Behind the departing system, we'll see another surge of continental polar air drawn southward into the forecast area, and this will bring seasonably cold temperatures with a freeze expected Monday night. Thereafter, temperatures will moderate some, and they should actually reach above normal levels for Wed/Thu for the first time since before Thanksgiving.

Friday into next weekend: We're monitoring the potential for a more significant surge of cold air by the end of next week. Global models have trended decidedly cooler with the overall pattern and suggest a stronger surface high may develop and surge southward through the Plains and MS Valley, but confidence in the sensible weather details are too low for messaging at this point. /EC/

AVIATION

(00Z TAFS) Issued at 648 PM CST Sat Dec 6 2025

Main concern for aviation will be low stratus and FG producing expected widespread IFR or LIFR conditions developing and persisting through at least 15Z Sunday. MVFR or lower conditions should persist through the end of the TAF period at most sites. /NF/

PRELIMINARY POINT TEMPS/POPS

Jackson 43 62 42 53 / 0 40 30 0 Meridian 39 61 41 53 / 10 20 40 0 Vicksburg 44 61 39 52 / 0 60 20 0 Hattiesburg 44 67 46 58 / 10 20 50 0 Natchez 45 67 41 54 / 0 50 30 0 Greenville 41 55 38 47 / 0 40 10 0 Greenwood 41 58 38 50 / 0 40 20 0

JAN WATCHES/WARNINGS/ADVISORIES

MS...Dense Fog Advisory from 10 PM this evening to 9 AM CST Sunday for MSZ018-019-025>066-072>074.

LA...Dense Fog Advisory from 10 PM this evening to 9 AM CST Sunday for LAZ007>009-015-016-023>026.

AR...Dense Fog Advisory from 10 PM this evening to 9 AM CST Sunday for ARZ074-075.