textproduct: New Orleans/Baton Rouge

KEY MESSAGES

Updated at 1204 PM CDT Fri Aug 14 2026

- Hot temperatures are expected for much of the forecast. Highs in the mid to upper 90s through the weekend with heat index values generally running in the mid 100s to near 110 today, and then climbing into the lower to mid 110s this weekend. Heat Advisories are in place for today followed by an Excessive Heat Warning Saturday and Watch Sunday. Into the new week at least Heat Advisories are anticipated. The impact of the afternoon highs will be exacerbated by the slightly higher than normal overnight lows; we just won't have a chance to cool off.

SHORT TERM

(Now through Monday night) Issued at 1204 PM CDT Fri Aug 14 2026

We continue to be under the control of high pressure, the heat dome. Expect this situation to continue even beyond the long term forecast period. Generally, the impacts of the heat dome are increased temperatures, both daytime highs and overnight lows, and less rain. Specifically, regarding temperatures, we are looking at daytime highs in the upper 90s and even into the low 100s. And, factoring humidity into the equation gives us the Heat Index or a feels-like temperature. Regarding rainfall, rain chances are about as close to 0% as we ever get. We can't rule out a stray shower or storm during the day, but they won't be common. The lack of rain and associated dryer soils also adds to the higher temperatures. At night, there will still be some convective activity in the coastal waters.

The total impact for the coming days is Heat Indicies in the 110-115 range which is driving issuance of an Excessive Heat Warning for 11am-8pm Saturday and an Excessive Heat Watch Sunday (will likely upgrade to a warning tomorrow). The impact is accentuated by warmer overnight low temps in the upper 70s to 80 because we just don't have a chance to cool off. With the elevated heat, make sure you are drinking plenty of water and taking advantage of cooler areas as much as possible.

LONG TERM

(Tuesday through Thursday night) Issued at 1204 PM CDT Fri Aug 14 2026

The heat dome will remain in place, although its center is sliding slightly to the west and then back to the east. And by early to mid- week there will be a slight weakening of the high pressure. This will allow for a slight increase in precip potential, from 15ish percent to 25ish percent. The weakening and any accompanying rain that does occur will help to moderate the high temps slightly, but feels like temps will still be in the range of Heat Advisory criteria.

AVIATION

(18Z TAFS) Issued at 1204 PM CDT Fri Aug 14 2026

VFR conditions across the area for the forecast period. Most notable weather condition to report is that winds will be light and variable through the period.

MARINE

Issued at 1204 PM CDT Fri Aug 14 2026

Benign marine conditions will continue through the forecast period with high pressure mostly being in control. Isolated nightly storms will be possible mainly toward sunrise. Overall, winds should remain mostly southerly at or less than 10 knots outside any storms.

LIX WATCHES/WARNINGS/ADVISORIES

LA...Heat Advisory until 8 PM CDT this evening for LAZ034>037-039- 046>048-056>058-064-070-071-076>087-089>100.

Extreme Heat Warning from 11 AM to 8 PM CDT Saturday for LAZ034>037-039-046>048-056>058-064-070-071-076>087-089>100.

Extreme Heat Watch from Sunday morning through Sunday evening for LAZ034>037-039-046>048-056>058-064-070-071-076>087- 089>100.

GM...None. MS...Heat Advisory until 8 PM CDT this evening for MSZ068>071-077- 083>088.

Extreme Heat Warning from 11 AM to 8 PM CDT Saturday for MSZ068>071-077-083>088.

Extreme Heat Watch from Sunday morning through Sunday evening for MSZ068>071-077-083>088.

GM...None.