textproduct: Jackson

KEY MESSAGES

- Monitoring the potential for increasing heat stress late this week and weekend.

DISCUSSION

Issued at 116 PM CDT Mon Jun 8 2026

Tonight through Tuesday night...

Near term guidance continues to show the trough pushing east out of our area later this afternoon. The strengthening subtropical ridge over the ArkLamiss region will track east over our CWA. A few scattered showers cannot be ruled out over a good portion of our forecast area later this evening. Quiet weather conditions will prevail across our area tonight. Cloud cover will begin to clear from the west allowing for radiational cooling to occur. This radiational cooling will allow for nighttime temperatures to dip into the low 70s areawide. The subtropical ridge will keep conditions quiet across much of our CWA looking ahead into Tuesday with highs in the low 90s. Another round of quiet weather is in the forecast Tuesday night with lows dipping into the low/mid 70s.

Wednesday through Next Monday...

Pleasant sunny conditions will prevail across our CWA Wednesday and Thursday as the subtropical ridge remains over our forecast area. The clear skies and persistent daytime heating will cause afternoon highs to peak in the low 90s for both days. Heat indices will be on the rise Wednesday and Thursday with heat index values reaching the triple digits mainly for areas along and west of I-55. Areas east of I-55 will see heat index values in the upper 90s.

Dangerous heat will be the primary focus for the long term period particularly for the Friday-Sunday timeline given the relative cloud free conditions, increasing temperatures, and humid boundary layer conditions due to the recent above normal rainfall. Current afternoon guidance continues to show that heat indices/WBGT and the overall heat risk will peak Friday-Sunday when highs are expected to reach the low/mid 90s areawide, while boundary layer moisture begins to pool over the area. We will hold off on messaging for dangerous heat for now given that this is still several days out and will continue to monitor heat trends as we get closer to the weekend. Once the peak heat threats begin to show up within the day 4 forecast range, that should be a good time to act on and message for them in earnest.

Looking down the road, as we finish up the weekend and go into early next week, a significant trend was noted in the longer term global ensemble guidance for unseasonably strong westerlies to be suppressed southward into our region. This hints at an active convective pattern that would be rather anomalous for mid June, so would recommend monitoring this trend as we go through the next several days. /CR/

AVIATION

(18Z TAFS) Issued at 116 PM CDT Mon Jun 8 2026

VFR conditions will prevail for a majority of the TAF period at all sites. Brief lowering of categories will be possible during periods of showers and storms across sites along and north of I-20. MVFR/IFR low stratus/BR will be possible at sites HBG/PIB by 08-10Z Tuesday morning, improving by 12-14Z. Winds will be light and southerly./KP/

PRELIMINARY POINT TEMPS/POPS

Jackson 73 92 73 92 / 10 10 0 0 Meridian 72 92 72 93 / 10 0 0 10 Vicksburg 73 92 75 92 / 10 10 0 0 Hattiesburg 70 91 71 92 / 10 20 0 10 Natchez 73 93 74 93 / 10 10 0 10 Greenville 74 93 75 92 / 0 0 0 0 Greenwood 74 93 75 93 / 0 10 0 0

JAN WATCHES/WARNINGS/ADVISORIES

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