textproduct: Paducah

KEY MESSAGES

- Confidence has increased to a 70-90% chance of a heatwave impacting the region later next week, with heat index values exceeding 100 degrees. Heat headlines will be needed.

- Dry conditions will persist well into next week with a 15-30% chance of isolated showers and thunderstorms making a return on Friday, especially over northeast portions of the region. Rain chances will bring limited relief from the heat at best heading into next weekend.

DISCUSSION

Issued at 1223 AM CDT Sat Aug 29 2026

A strong 594 dm ridge of high pressure aloft will build over the lower Ohio Valley this weekend into early next week, providing abundant sunshine and tranquil weather. Weak flow in the column will inhibit moisture transport from the south, allowing for dewpoints to mix down into the lower 60s again today due to a deep dry layer above 800 mb. As a weak area of high pressure at the sfc builds east on Sunday, a modest increase in the pressure gradient occurs that will allow for light southerly return flow into next week. Despite a subtle increase in moisture, dewpoints struggle to rise above 70 degrees, supporting daily NBM highs in the low to mid 90s. The dry heat yields a 70-90% chance on the LREF of heat index values exceeding 100 degrees from Tuesday through the remainder of the week that will cause a major to extreme heat risk.

There are signs the ridge begins to breakdown and migrate west next weekend as a frontal boundary washes out to the north. Increasing rain chances becomes more probable and may bring some limited relief; however, NBM PoPs only peak at a 15-30% chance at best on Friday to end the week. Model ensembles including the ENS are more optimistic in seeing some light rain chances over northeast portions of the region with mid-level energy moving downstream from the Plains.

AVIATION /12Z TAFS THROUGH 12Z SUNDAY/

Issued at 558 AM CDT Sat Aug 29 2026

Patchy shallow fog impacting mainly KCGI this morning will quickly scatter out with sunrise. VFR conditions are then expected the rest of the day with high-level clouds building in during the afternoon. Cannot rule out some patchy fog again early Sunday morning, but confidence is too low to include mention. East to southeast winds around 5 kts turn calm again tonight.

PAH WATCHES/WARNINGS/ADVISORIES

IL...None. MO...None. IN...None. KY...None.