textproduct: Kansas City/Pleasant Hill

KEY MESSAGES

* A prolonged period of hazardous heat begins building into the region today. An Extreme Heat Warning will take effect this afternoon at 1 PM CDT and remain in effect through late Thursday night.

DISCUSSION

Issued at 254 AM CDT Sun Jun 28 2026

Today, blocking high pressure will establish itself across the central and eastern portions of the CONUS. Analysis of 500 mb clusters and mid-range guidance suggest that this upper-level pattern is likely to persist through the end of the work week with the first indications of anticyclolysis not apparent until Saturday.

Temperatures in excess of 90F are likely this week, with REFS probabilities of exceedance hovering around 90% areawide today and Monday. With dewpoints in the mid/upper 70s, heat indices are expected to soar into the mid 100s with some areas potentially approaching 110F. Overnight lows are expected to remain in the mid/upper 70s for much of the week as well, potentially perpetuating hazardous heat impacts. Widespread Major (Level 3 of 4) HeatRisk is expected by Monday, with a signal for Extreme (Level 4 of 4) HeatRisk first appearing in central Missouri around the same time. With high confidence in a multi-day stretch of hazardous heat, an Extreme Heat Warning will go into effect at 1 PM CDT this afternoon and will remain in effect through at least late Thursday night. An extension in time or additional heat products may be needed in future forecast updates.

Outside of heat, windy conditions are expected to close out the weekend and continue into the early portions of the week ahead, likely due to the entrainment of rising thermals from solar heating. Forecast soundings suggest 25-35 kts of momentum transfer through Tuesday evening. The signal for strong gusts becomes less impressive by mid/late week but potential for ~20 kt gusts still exists through Friday, though this is mainly north of US-36.

AVIATION /12Z TAFS THROUGH 12Z MONDAY/

Issued at 532 AM CDT Sun Jun 28 2026

VFR conditions are expected over the TAF sites during this TAF forecast period. There are some low CIGs over northeastern Missouri this morning and these will continue to push northeast and thin this morning. Winds are beginning to pick up this morning and will be sustained 14-18kts and gusting up to 30kts this afternoon. This evening, winds and gusts will relax a bit but will remain elevated overnight.

EAX WATCHES/WARNINGS/ADVISORIES

MO...Extreme Heat Warning from 1 PM this afternoon to midnight CDT Thursday night for MOZ001>008-011>017-020>025-028>033- 037>040-043>046-053-054. KS...Extreme Heat Warning from 1 PM this afternoon to midnight CDT Thursday night for KSZ025-057-060-102>105.