textproduct: Paducah

KEY MESSAGES

- A Heat Advisory is now in effect this afternoon through Wednesday evening for heat index values of 100 to 108 degrees. Peak values today however will be closer to 100 degrees.

- Patchy fog this morning will be followed by mainly dry conditions until Wednesday when daily shower and thunderstorm chances around 40-60% make a return through the end of the week.

- A few stronger to potentially severe storms are possible on Wednesday and especially Thursday.

DISCUSSION

Issued at 1251 AM CDT Sun Aug 9 2026

A warm front is lifting north of the FA this morning as a broad upper level ridge begins to build more east with drier conditions. Patchy fog remains possible with mostly clear skies; otherwise, southerly return flow will increase the heat and moisture each day as a warm sector regime dominates through the first half of the week. As a result, a Heat Advisory is now in effect this afternoon through Wednesday evening for heat index values of 100 to 108 degrees. While most of the period through Tuesday will be dry, the one caveat for tonight into Monday morning is the ARW which shows the potential for a complex of storms to move downstream from central Illinois. At the moment this is an outlier with most model guidance including the NBM keeping any rain chances north of the FA.

As the ridge of high pressure begins to breakdown in the latter half of the week, daily shower and thunderstorm chances around 40-60% make a return on Wednesday with a series of shortwaves moving across the Ohio Valley. Relief from the heat eventually arrives, as a cold front sags southeast and becomes stationary over the FA late Thursday into Thursday night. In the wake of the front, some of the heat headlines may eventually need to be extended into Thursday for portions of the FA contingent on timing. With an increase in wind shear and sufficient instability Wednesday and especially Thursday, a few stronger to potentially severe storms will be possible. Heavy rainfall will also be another hazard of concern with PWATs exceeding 2 inches.

AVIATION /00Z TAFS THROUGH 00Z MONDAY/

Issued at 1035 PM CDT Sat Aug 8 2026

Patchy ground fog may become a factor over the next few hours if winds can get completely calm. Still some drainage winds at most airfields but conditions look like they will become modestly favorable for patchy fog by 2 to 3 am Sunday. After sunrise VFR conditions appear likely with drier weather anticipated.

PAH WATCHES/WARNINGS/ADVISORIES

IL...Heat Advisory from noon today to 8 PM CDT Wednesday for ILZ075>078-080>094. MO...Heat Advisory from noon today to 8 PM CDT Wednesday for MOZ076- 086-087-100-107>112-114. IN...Heat Advisory from noon CDT /1 PM EDT/ today to 8 PM CDT /9 PM EDT/ Wednesday for INZ081-082-085>088. KY...Heat Advisory from noon today to 8 PM CDT Wednesday for KYZ001>022.