textproduct: Paducah

KEY MESSAGES

- Prolonged duration extreme heat continues with an Excessive Heat Warning now in effect thru 8 PM CDT Saturday.

- There are multiple consecutive days of air temperatures forecast to reach near or exceed the century mark; also there may be several record warm overnight low temperatures in the mid 70s possible. These forecast high and low temperatures are a good 10-15 degrees above seasonal norms. - Next rain chances keep getting lower and pushed back, now coming in late Saturday into Saturday night with just a 10-30% chance of rainfall exceeding a tenth of an inch where isolated to scattered showers and thunderstorms may occur.

DISCUSSION

Issued at 1230 PM CDT Tue Sep 1 2026

The H5 High centers over the PAH FA this mid week in the 596 DM range. The 1018 MB surface reflected high sits just to its east and offers a steady-state of warm air advection. Both ridges shift gradually to the east with time, holding their ample strength/impacts on our PAH FA heading into the holiday weekend, with peak extremity impacts coming the next 48-72 hours. Extended modeling continues to push back/dwindle next pcpn chances, and these chances do start to impact the ridge strength/temps by the end of the day Saturday, so the headline was not extended beyond then for now. It is possible some parts of the CWA, namely the east, will see the headline numbers back off their peaks by then, but will still near/meet the prolonged duration thresholds. By Sunday-Monday, we should see that east- to-west cooldown translate its way back below the century HI mark, even as our pcpn chances dwindle again as the upper ridge re-orients in a little flatter fashion over the southern Plains.

AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/

Issued at 1230 PM CDT Tue Sep 1 2026

FEW-SCT Diurnal bases 5-7K FT AGL will be the rule, while temporary SCT-BKN at KOWB is possible this pm. Overnight, clear skies/light winds with high pressure centered nearby means patchy fog could offer temporary restrictions to vsbys, most likely at the prone terminals, otherwise a Visual Flight Rules forecast is maintained.

PAH WATCHES/WARNINGS/ADVISORIES

IL...Extreme Heat Warning until 8 PM CDT Saturday for ILZ075>078- 080>094. MO...Extreme Heat Warning until 8 PM CDT Saturday for MOZ076-086- 087-100-107>112-114. IN...Extreme Heat Warning until 8 PM CDT /9 PM EDT/ Saturday for INZ081-082-085>088. KY...Extreme Heat Warning until 8 PM CDT Saturday for KYZ001>022.