textproduct: Jackson

KEY MESSAGES

- Dangerous heat stress will remain a concern through late this week.

- Afternoon shower and thunderstorm chances in our forecast area will trend lower by mid week, and then begin to return next weekend.

DISCUSSION

Issued at 247 AM CDT Mon Aug 10 2026

An anomalously strong ridge remains over the Four Corners region this morning, but the Bermuda High is becoming the dominant feature in our region as it retrogrades from the Atlantic to the Gulf Coast. As it treks westward this week, it will become a stronger limiting factor for rain chances. High PWAT values near 2 inches will persist in the region through midweek, so increasing heat will push our daily heat index values more reliably over 105 degrees across the area today and onward. Showers and thunderstorms will bring spotty relief from the heat. Drier air will wrap from the Gulf and southwestern US as the ridge becomes more prevalent, and PWAT values will fall closer to 1.5 inches by on Friday. Model guidance is favoring a new surge of tropical moisture by Saturday into Sunday though, and the stout ridge and deep moisture could result in more widespread significant dangerous heat (heat index values near or greater than 110 degrees) by the weekend. Overnight low temps will only fall into the mid or upper 70s later in the week, worsening heat stress for vulnerable populations and those without air conditioning. And rain chances will creep back in from the south and east as humidity increases there.

Residents are reminded that heat is particularly dangerous for the elderly, the sick, and those without access to reliable air conditioning. Be sure loved ones and neighbors have access to a cool place to stay in periods of more intense heat and humidity. /NF/

AVIATION

(06Z TAFS) Issued at 1250 AM CDT Mon Aug 10 2026

VFR conditions will prevail through the majority of the TAF period. However, a brief period of low clouds or fog is possible around daybreak this morning at HBG/PIB. This afternoon and early evening, isolated to scattered convection may result in brief visby reductions, with higher potential across north/east MS. /DL/

PRELIMINARY POINT TEMPS/POPS

Jackson 95 75 95 75 / 20 10 10 10 Meridian 94 75 94 76 / 30 10 40 10 Vicksburg 95 75 95 75 / 10 0 0 0 Hattiesburg 96 75 97 75 / 20 10 10 10 Natchez 95 74 96 74 / 10 10 10 0 Greenville 96 77 96 78 / 10 10 0 0 Greenwood 95 75 95 77 / 20 10 20 10

JAN WATCHES/WARNINGS/ADVISORIES

MS...Heat Advisory from 11 AM this morning to 8 PM CDT this evening for MSZ018-019-025-034-035-040-041-047-053-059>061.

LA...Heat Advisory from 11 AM this morning to 8 PM CDT this evening for LAZ008-009-016-024>026.

AR...Heat Advisory from 11 AM this morning to 8 PM CDT this evening for ARZ075.