textproduct: Jackson

KEY MESSAGES

- Widespread shower and thunderstorm chances return this weekend.

- Monitoring the potential for increasing heat stress next week.

DISCUSSION

Issued at 124 PM CDT Fri Jun 5 2026

Tonight through next Thursday...The primary story during this forecast period remains that of increasing rain chances this weekend, along with the potential for increased heat stress next week. Rain chances return to the forecast starting tomorrow, and continue through the weekend as deep moisture lifts north from the Gulf of America into the Lower Mississippi River Valley. As this happens, heating and disturbances aloft traversing the region will result in a good coverage of showers, along with a few storms, developing and lifting northeast through the forecast area both Saturday and Sunday. While neither day looks to be a complete washout, the better coverage of off and on convection each day will be during the late morning to early evening hours, with a lull expected during the overnight hours. However, given the moisture- rich environment over the region, some showers bubbling up during the overnight hours can't be ruled out.

With advertised precipitable H2O values during this time in the 2- 2.5 inch range, rainfall could be heavy at times. As a result, some localized flooding can't be ruled out due to said locally heavy downpours in a short amount of time, along with the potential for training convection. Confidence in this is currently too low and looks too isolated at the moment to introduce it into the HWO on this afternoon's package. However, it will continue to be monitored.

This deeply moist airmass will persist across the region during the upcoming work week. With the onset of heating each day, isolated to scattered showers and storms will be possible. It'll also be during this time where the concern for heat stress will be on the rise. By the time Tuesday rolls around, and continuing through Thursday, with highs in the 90s and dew points in the 70s, afternoon heat index values currently look to reach and eventually surpass the century mark. /19/

AVIATION

(18Z TAFS) Issued at 1256 PM CDT Fri Jun 5 2026

VFR conditions will prevail through 10Z at all TAF sites. After 10Z, MVFR/IFR ceilings will develop as low stratus develops across the region. Thereafter, MVFR ceilings will persist and -RA will be possible towards the end of the period./KP/

PRELIMINARY POINT TEMPS/POPS

Jackson 71 85 72 86 / 10 70 30 80 Meridian 68 86 72 85 / 0 60 50 90 Vicksburg 72 85 73 87 / 10 80 20 70 Hattiesburg 70 83 72 85 / 10 90 40 90 Natchez 73 86 73 88 / 10 80 30 80 Greenville 73 87 73 87 / 10 60 50 80 Greenwood 72 88 73 87 / 0 50 60 80

JAN WATCHES/WARNINGS/ADVISORIES

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