textproduct: Jackson

KEY MESSAGES

- Marginal threat for isolated severe storms over east central MS late this afternoon into the evening.

- "Limited Threat" for dangerous heat stress continues today.

- After a brief break in heat impacts, heat stress builds back in mid and late next week.

DISCUSSION

Issued at 255 PM CDT Sat Aug 1 2026

The forecast is generally on track for the next seven days with a brief reprieve from the heat early in the next week followed by a return to hotter and mostly rain-free conditions. In the near term, per SPC and the NCAR AI/ML suite, there is a highly conditional threat for getting a few windy storms in what has turned out to be an unusually well-mixed airmass today. The boundary layer conditions are not supportive of storm development in our area, so it will take a good bit of forcing from the mid level trough and associated cold front currently digging southward into the area if we are to see any late this afternoon and evening. If storms do indeed develop this far west (i.e., east central MS), seasonably strong low to mid level westerlies and steeper mid level lapse rates could support a damaging wind threat, particularly if any multicell clusters can get going. Otherwise, most locations over the forecast will experience quiet conditions as we go through the near term. /EC/

Slightly drier air will advect into the area in the wake of the front and hang around the region Sunday into Monday. Highs will generally range from the upper 80s to mid 90s each day, with dew points from the upper 60s to lower 70s. Unfortunately, this'll all be short-lived as we move into the mid and latter portions of the week. Strong high pressure aloft will again re- assert itself across the Lower Mississippi River Valley during this time. High temperatures will again begin climbing back into the mid and upper 90s areawide. Moisture levels will also begin creeping up, possibly again leading to another bout of dangerous heat stress as we end the forecast period. Rain chances also will be tough to come by during this time, with only an isolated shower or storm possible. /19/EC/

AVIATION

(00Z TAFS) Issued at 702 PM CDT Sat Aug 1 2026

VFR conditions prevail with scattered midlevel clouds. Wind gusts at JAN should wind down within the next hour as the sun sets. Showers and storms associated with a frontal boundary will sweep across eastern sites this evening. Behind this front, MVFR stratus could develop tomorrow morning at northern sites. Whether or not there will be ceilings however is a little uncertain, but went pessimistic in TAF with BKN. Any low stratus should be brief. /SAS/

PRELIMINARY POINT TEMPS/POPS

Jackson 70 89 70 92 / 40 0 0 0 Meridian 71 88 70 90 / 60 10 0 10 Vicksburg 71 90 71 93 / 20 0 0 0 Hattiesburg 75 91 72 92 / 50 0 0 10 Natchez 71 92 71 95 / 40 0 0 0 Greenville 71 89 70 92 / 0 0 0 0 Greenwood 69 87 69 91 / 0 10 0 10

JAN WATCHES/WARNINGS/ADVISORIES

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