textproduct: Paducah

KEY MESSAGES

- Dangerous heat and humidity will build into the region and remain in place through at least Thursday. Peak heat indices are forecast to reach 105 to 110 each afternoon. Little relief is expected overnight with lows only falling into the mid 70s.

- It currently looks like we transition to more typical summer- time heat and humidity over the 4th of July weekend with heat index readings possibly only reaching the lower 100s. Small chances (20-30%) for showers and storms are also possible.

DISCUSSION

Issued at 114 PM CDT Sun Jun 28 2026

We finally get a break from the relentless pattern of storms and flash flooding! The final round of convection dissipated over the Evansville Tri-state region early this morning. Areal Flood Warnings remain in place for a few areas due to water remaining over numerous roads. The upper level ridge centered across the Deep South is in the process of shifting north resulting in a very hot and steamy afternoon across our area. Afternoon heat indices at 1 PM have already reached the upper 90s to lower 100s.

A 594-597dm ridge will build into the Quad State region Monday into Tuesday and then become more centered just east of our area in the Ohio Valley Wednesday into Thursday. This will result in our first extended heatwave of the season (Paducah has only had 2 days reach 90 to this point in the season). Daily highs reach the lower to middle 90s, coupled with dewpoints in the middle to upper 70s, which will produce heat index readings peaking from 105 to 110 in many places each day. We went ahead and issued an Extreme Heat Warning with this package given the duration aspect (4 straight days with 105+ heat index). There will also be limited relief at night with lows only falling into the mid 70s.

As the ridge center shifts just east of us there is some hint at convection trying to work northward into part of western KY as early as Wednesday afternoon. Can't rule this out, but it appears a bit more likely for isolated convection on Thursday. The ridge begins to break down Friday into the weekend, which may allow a more typical summer-time airmass to reside across our area over our Semiquincentennial Independence Day holiday weekend. Plenty of instability and moisture in place to support at least isolated to widely scattered convection each day, although there doesn't appear to be much in the way of upper level support (shortwave energy) until at least Sunday or early the following week. Just appears like what you'd typically have in July with highs in the lower 90s along with high humidity producing heat index readings in the lower 100s which provides fuel for some afternoon/early evening convection.

UPDATE

Issued at 542 PM CDT Sun Jun 28 2026

Updated Aviation discussion for 00Z TAF Issuance.

AVIATION /00Z TAFS THROUGH 00Z TUESDAY/

Issued at 542 PM CDT Sun Jun 28 2026

SCT-BKN diurnal bases will dissipate with loss of fuel, and the same will hold tmrw with the same trends as today, as high pressure asserts its grip upon our weather. Some tighter gradient to our west may yield a few southerly gusts during peak heating again tmrw, similar to today...so included that at KCGI/KMVN accordingly. And while the guidance is not really hitting it, trends should be monitored with clearing skies/light winds and all the recent rainfall, potential for vsbys to restrict in patchy fog cannot be completely ruled out, but was not included in this package.

PAH WATCHES/WARNINGS/ADVISORIES

IL...Heat Advisory until 8 PM CDT this evening for ILZ075>078- 080>094. Extreme Heat Warning from 11 AM Monday to 8 PM CDT Thursday for ILZ075>078-080>094. MO...Heat Advisory until 8 PM CDT this evening for MOZ076-086-087- 100-107>112-114. Extreme Heat Warning from 11 AM Monday to 8 PM CDT Thursday for MOZ076-086-087-100-107>112-114. IN...Heat Advisory until 8 PM CDT /9 PM EDT/ this evening for INZ081-082-085>088. Extreme Heat Warning from 11 AM CDT /noon EDT/ Monday to 8 PM CDT /9 PM EDT/ Thursday for INZ081-082-085>088. KY...Heat Advisory until 8 PM CDT this evening for KYZ001>022. Extreme Heat Warning from 11 AM Monday to 8 PM CDT Thursday for KYZ001>022.