textproduct: Jackson

KEY MESSAGES

- Dangerous heat stress is likely Friday through Sunday.

- A pattern favorable for flash flooding will develop early next week.

DISCUSSION

Issued at 1229 PM CDT Wed Jun 10 2026

Through mid next week...

Ridging aloft and at the surface will continue to be the dominant features influencing our weather through the weekend. Low level flow will mostly stay southerly to southwesterly which will keep the humidity high, with dewpoints in the 70s throughout. All the while, temperatures aloft will support temperatures in the low to mid 90s, perhaps upper 90s in spots. Heat advisory criteria will more than likely be reached and a heat advisory has been issued for Friday through Saturday. Greater coverage of convection leaves Sunday more uncertain, but cannot rule out an extension into Sunday as well for some of the area. The accompanying heat graphic has been updated to include an area of Elevated.

By Monday, a trough over the central CONUS digs and impinges on the ridge. An associated surface boundary sags southward into the area early next week. Exact timing of this feature is uncertain at this time. A large plume of rich moisture with PWAT around 2.5 inches surges northward in response, and pools ahead of the boundary. The boundary should provide a focus for training convection, while the rich moisture supports very efficient rain rates. Additionally, there is upper ascent with our area situated beneath the right entrance region of the midlevel jet. Considering the slow moving nature of the frontal boundary, ascent, and potentially multiple surges of tropical moisture, there is synoptic support for potentially significant flash flooding. Confidence is high enough to introduce a limited graphic for flood at this time areawide to get ahead on messaging. Adjustments will be made over the coming days as confidence increases. The frontal boundary may push south or may stall across southern portions of the area just beyond the period mid next week, which should decrease flash flood threat. Timing window of greatest confidence at this time is Monday through Wednesday. /SAS/

AVIATION

(18Z TAFS) Issued at 1229 PM CDT Wed Jun 10 2026

Scattered cumulus deck across the forecast are to start the period, with VFR conditions expected to prevail through the TAF period. /NF/

PRELIMINARY POINT TEMPS/POPS

Jackson 73 94 75 94 / 0 0 0 10 Meridian 73 95 75 94 / 0 0 0 10 Vicksburg 75 94 77 93 / 0 0 0 10 Hattiesburg 71 94 73 94 / 0 0 0 10 Natchez 74 95 75 95 / 0 0 0 10 Greenville 76 95 77 93 / 0 0 10 30 Greenwood 75 95 76 93 / 0 0 0 50

JAN WATCHES/WARNINGS/ADVISORIES

MS...Heat Advisory from 11 AM Friday to 8 PM CDT Saturday for MSZ018- 019-025-034-035-040>043-047>049-053>055-059>065-072>074.

LA...Heat Advisory from 11 AM Friday to 8 PM CDT Saturday for LAZ009- 016-024>026.

AR...Heat Advisory from 11 AM Friday to 8 PM CDT Saturday for ARZ075.