textproduct: Kansas City/Pleasant Hill

KEY MESSAGES

* Quiet, dry, and generally comfortable again today

* Shower and storm chances return later Thursday, continuing through the weekend and into at least early next week.

* Warmer and humid conditions return by the end of the week, continuing through the 7-day forecast. - Heat index values into the 90s, including mid-upper 90s, possible at times.

DISCUSSION

Issued at 332 AM CDT Wed Jun 3 2026

Conditions across the area overnight have remained on the quiet and comfortable side with clear to scattered cloud cover and light easterly winds continuing to keep dew points suppressed. Remainder of the overnight and morning hours will see this continue, with some increasing lower level cloud cover and winds shifting clockwise out of the SW and S. The cloud cover and dew point disparity across the region will yield lows ranging from the mid 50s (east) to low to mid 60s (west).

Today tends to be a rinse and repeat of yesterday for much of the area with temperatures in the low to mid 80s and pleasant dew point/humidity conditions. The main difference from yesterday will tend to be winds shifting out of the SE/S through the day, but continuing to advect in the lower humidity air mass.

Changes become more noticeable by Thursday, setting the table for the prolonged return of warmer and humid conditions and chances for showers/storms. The large surface high and mid-upper level ridging responsible for the current quiet and pleasant conditions will have shifted E/SE and flattened respectively. This will allow plume of deep moisture return to also shift eastward into/across the forecast area. Initially Thursday that will yield warmer and more humid conditions, but mostly dry through the day. Synoptic deterministic guidance has come into better agreement on a northern stream shortwave crossing the Plains Thursday and bringing about the first (of many) chances for showers/storms to the area as early as Thursday afternoon. Soundings point towards an uncapped or nearly uncapped environment that may yield scattered non-severe thunderstorms through the afternoon and evening with the approaching shortwave and ongoing WAA. Otherwise the best opportunity will primarily reside over W/NW portions of the forecast area closer to the core shortwave, but appears poised to struggle to produce more than non-severe thunderstorms with better deep shear (organization) support displaced NW into Nebraska and Iowa. Friday sees another day re-priming the area and shifting general conditions eastward slightly. It is possible some ongoing activity into Friday morning, but again non-severe in nature. By the evening, another shortwave within the northern stream approaches the area and may yield the first opportunity for a few strong/severe storms. Parameter space over N/NW areas is forecast to be notably better than Thursday with lapse rates, strong instability (>2500-3000 J/kg MUCAPE), and more supportive deep layer shear within various deterministic guidance. This potential too is reflected within the current SPC Day 3 Outlook, where much of NE Kansas and NW/N Missouri his highlighted with a Marginal Risk and a Slight Risk displaced just to the NW in Nebraska and Iowa.

Into the weekend, a longwave trough/cutoff low digs into the PNW, causing mid-upper level ridging to amplify across the central/northern Plains. Concurrently, a broad trough/weak cutoff low is expected to lift northward out of Texas, which will continue shower/storm chances through the weekend. While instability depictions >1500-2000 J/kg MUCAPE remain, the chances for strong/severe are tempered by less supportive deep shear profiles given the broad troughing/low. A probable scenario would be for scattered to widespread showers/non-severe thunderstorm activity as this broad synoptic scale lift overspreads the area. During this time 850mb temps warm into the mid-upper teens deg C, which would begin to put upper 80s and low 90s in play for highs. Some uncertainty though given dependency on cloud cover and precipitation coverage and timing. Should upper 80s/touching 90 be achieved, existing (at that point) humid conditions would push heat index values into at least the mid 90s. For now, the NBM values in the mid- upper 80s with head index values into the low 90s are reasonable, and hotter conditions more conditional.

Blocking mid-upper level high over the Great Lakes prevents substantial pattern change over the area, continuing shower/thunderstorm opportunities and warm/humid conditions into at least early next week. For now, this yields a similar forecast as the weekend... primarily showers/non-severe thunderstorms, highs into the mid-upper 80s and heat indices into the lower 90s.

AVIATION /18Z TAFS THROUGH 18Z THURSDAY/

Issued at 1227 PM CDT Wed Jun 3 2026

VFR conditions are ongoing across the region, and are expected to continue throughout the TAF period. Mid-level clouds this afternoon will gradually clear after peak heating, with mostly clear sky cover for the overnight. Clouds will begin to increase again tomorrow morning, with sfc winds shifting to a southerly component.

EAX WATCHES/WARNINGS/ADVISORIES

MO...None. KS...None.