Union, MS 39337 Weather

: New AVIATION:

Key messages

- Scattered showers and thunderstorms are expected across the area this weekend. Rain may disrupt outdoor plans Saturday evening in some areas.

- The chance for showers and thunderstorms is increasing Tuesday into Wednesday. We are monitoring potential for some storms to be strong to severe.

Mesoscale update

Issued at 922 AM CDT Fri Oct 30 2026

Quiet weather conditions will continue to prevail across our forecast area this morning as near term guidance continues to show a upper shortwave moving across Texas. Cloud cover will continue to gradually increase across the area as a quick look at GOES 16 visible satellite shows mid and high clouds moving across our CWA from west to east. Easterly winds will persist across the area with gusts up to 5-10 mph. Daytime highs will peak in the low 80s areawide. /CR/

Discussion

Issued at 325 AM CDT Fri Oct 30 2026

Mid and high clouds are beginning to increase to our west ahead of an upper shortwave currently moving into Texas. This system will shift northeastward toward the Mid MS Valley through this weekend, bringing a change to our weather after a prolonged dry period. Increasing mid level moisture later today will result in increasing clouds and patchy virga by this afternoon and evening as this moisture encounters drier low levels. By early tomorrow morning, the low levels will become saturated enough for scattered mostly light showers to spread across the area. Then by afternoon, we may see enough instability for a few heavier showers or a thunderstorm. Scattered convection will continue through Sunday, tapering off Sunday evening. No severe weather is expected. Rain may disrupt outdoor plans in some areas Saturday evening, but many areas will remain dry during peak candy hunting time. Just be sure to keep a close eye on the weather before venturing out, and have a backup plan if needed.

A more organized system is still on track to arrive next week, as an upper trough deepens across the central CONUS, bringing a cold front across the area Tuesday into Wednesday. This system will be accompanied by stronger deep layer shear, and 0-3 km bulk shear magnitudes pushing into the 30-50 kt range, though shear vectors may be largely boundary-parallel. Timing in guidance over the past few days has been mostly overnight, which would limit instability. However, there remains some potential for gusty winds if there is sufficient instability and storms become oriented efficiently with low level shear vectors. Continue to monitor this system in the coming days.

With the upper low cutting off into more of a slow moving bowling ball type look, clouds may linger behind this system into Wednesday and Thursday, but the chance for substantial rain will drop off quickly behind the front Wednesday. Temps will see a return to cooler mornings and milder days. /DL/

Aviation

(18Z TAFS) Issued at 1208 PM CDT Fri Oct 30 2026

Quiet weather conditions will occur across all TAF sites through the period with VFR conditions prevailing. /CR/

Preliminary point temps/pops

Jackson 63 81 63 77 / 0 30 60 70 Meridian 60 79 60 73 / 0 30 60 70 Vicksburg 62 80 62 80 / 10 30 70 60 Hattiesburg 62 84 63 78 / 0 40 50 70 Natchez 64 82 64 82 / 10 40 60 60 Greenville 62 78 62 76 / 0 30 60 70 Greenwood 61 78 61 74 / 0 30 70 70

Watches, warnings and advisories

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