textproduct: Jackson

KEY MESSAGES

- An active weather pattern will continue through Friday. - Heavy rain and localized flooding will be a possibility again Friday into Friday evening.

- Dry and cooler conditions will return this weekend.

DISCUSSION

Issued at 1235 AM CDT Thu Apr 30 2026

Through late next week:

The active jet pattern will continue to support unsettled weather through the end of the work week. A stalled surface boundary will waver roughly near the I-20 corridor and this will serve as the area of focus for rain and storms over the next couple of days. Moist advection will continue to feed this axis and promote cycles of training storms along and south of the boundary. This should result in additional rainfall of 2-3 inches and will carry a low risk for flash flooding. The limited HWO graphic will be maintained.

By Saturday, a shortwave digging and rounding the base of the longer wave trough will finally force the surface boundary out, leaving dry conditions in the wake. This will also bring notably cooler air to the area with temperatures falling below seasonal norms for the weekend. Perhaps most notable is for the potential for Saturday night lows to fall to the low 40s in some areas, which is about 15 degrees below normal for early May.

Temperatures will begin to steadily warm into early next week. A spoke of jet energy will once again push into the area and will aid in the moisture return and recovery supportive of a return of rain and storm chances by middle of next week. Too soon to get into the details, but it does seem that a surface low will drag another boundary over the area that may again stall and provide a focus for rain and storms. There may also be mesoscale features that cannot be parsed out yet. /SAS/

AVIATION

(06Z TAFS) Issued at 1235 AM CDT Thu Apr 30 2026

IFR/MVFR conditions with light rain showers will prevail south of I-20, whereas north of I-20 should expect improving conditions as the rain showers come to an end this morning and high clouds prevail. /SAS/

PRELIMINARY POINT TEMPS/POPS

Jackson 73 54 62 51 / 40 50 80 90 Meridian 74 52 63 49 / 40 30 70 90 Vicksburg 72 55 62 50 / 40 60 80 90 Hattiesburg 76 56 68 52 / 60 50 80 100 Natchez 72 55 62 51 / 50 60 90 100 Greenville 71 56 64 51 / 10 30 50 70 Greenwood 73 54 67 50 / 10 30 50 80

JAN WATCHES/WARNINGS/ADVISORIES

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