textproduct: Kansas City/Pleasant Hill

KEY MESSAGES

* Active weather pattern continues across the region, through the weekend and into middle of next week.

* Severe storm threat through the weekend continues to appear low, with better chances appearing possible Tuesday and Wednesday.

* With numerous chances for rain into/through middle of next week, river and areal flooding may be realized across portions of the area, but highly dependent on where areas of heavier rainfall occur/overlap over the coming days.

DISCUSSION

Issued at 353 AM CDT Sat Apr 11 2026

To this point in the overnight, much quieter and drier compared to previous overnight. But, that is gradually coming to an end for at least portions of the forecast area at the time of this discussion. With the eastward departure of northern stream shortwave and attendant/trailing high pressure, southerly flow has begun to reestablish over the Central Plains. Aside from general warm air and moisture advection, a 35-45+ kt LLJ has allowed elevated showers and thunderstorms to blossom over portions of north-central to northeast Kansas and southeast Nebraska. Much of this activity had been well advertised by CAMs and currently unfolding largely as anticipated, including more of a NE/ENE trajectory once established and influenced by more of the mean flow. Through the remainder of the overnight and into Saturday morning, LLJ will continue to establish more of a SW orientation, helping gradually push into and across the NW/N portions of the forecast area. There is some lower-end/casual concern for localized flooding issues as this activity overspreads the area, especially with pockets of MRMS 3-hr estimates of >2.5" and 1-hr estimates >1.5" over portions of Kansas. That would approach or exceed the rejective RFC 3-hr and 1-hr FFG and would be most likely in areas where some training may be seen as the LLJ angles into the area. Fortunately, though, the pockets of heavier rain are expected to mainly be displaced northward from the areas of heavier rain Thursday night/Friday morning. Activity eventually lifts into Iowa and across Northern Missouri through the morning, meanwhile surface boundary lifts back northward as a warm front.

Additional storm development may be seen later this afternoon/evening and into the overnight. Confidence is greatest in the overnight hours with anticipated 45-50+ kt LLJ. Elevated nature limits severe potential, but given recent rains localized flooding would be possible. Lesser confidence in any late afternoon/evening activity, but carries a bit of a conditional threat in that if some can develop in a weakly capped environment, they may carry hail/tor threat if near the warm front. Working against that though is focused lift and overall weak to marginal wind profiles for organization. This would appear to be most possible over far NW Missouri and into Nebraska and SW Iowa. CAMs are far from unanimous in the afternoon/evening potential. This too is noted within new SPC Day 1 Outlook.

By Sunday morning, mid-upper level pattern over central CONUS will be solidly southwesterly while a cutoff low moves inland over central/northern California. Synoptic guidance is in good agreement of another surging plume of moisture lifting northward along with a shortwave riding up through the SW flow. This will overspread showers and general thunder across the area. Severe threat remains quite low here given the widespread and prolonged nature, helping keep profiles unsupportive overall. Some training concern here keeps flooding a concern, though widespread issues remain unlikely as activity does progressively get pushed eastward as surface low develops and moves drier into the Plains.

Monday looks mostly dry at this point with aforementioned surface low and dry air intruding at least western portions of the area. But ongoing WAA also begins to set the table for better strong/severe storm chances as early as Monday night/overnight, Tuesday, and Wednesday. Significant capping puts the kibosh on Monday evening, but possible a storm or two develops in the overnight as cap weakens and LLJ increases. Elevated nature would yield primarily a hail threat. Better potential appears Tuesday with cap notably weaker, depicted approaching shortwave, strong mid-level lapse rates, and generally supportive shear magnitude and profiles. There remain discrepancies in how synoptic guidance evolves surface low development and trajectory though, so details remain difficult to be confident in. A somewhat similar story possible Wednesday as well. Suffice it to say all hazards may be possible Tuesday/Wednesday. This too is reflected within SPC Days 4/5 Outlooks highlighting much of or significant portions of the CWA with 15% probabilities (Equivalent to SPC Slight). By Thursday, activity looks to clear out as western trough moves out across the Plains, giving the area a bit of a break, but may not last long with depictions of next western CONUS trough dropping down Friday and across central CONUS next weekend.

Throughout this forecast period temperatures tend to reside on the warm side, tempered some by the showers/storms and cloud cover, with persistent southerly surface flow in place. Expect highs in the 70s this weekend and highs in the mid 70s to mid 80s through majority of the work week.

AVIATION /18Z TAFS THROUGH 18Z SUNDAY/

Issued at 1235 PM CDT Sat Apr 11 2026

Looking at some persistent MVFR ceilings around downtown terminals and at KSTJ, but otherwise expecting cloud decks to clear out with the advancing warm front to VFR. Looking at diurnal mixing prompting gusts of around 20-25 kts through the afternoon, before falling off around the evening. Weather returns late tomorrow morning, with IFR ceilings returning as showers overtake all terminals from the southwest towards the northeast. Expecting gusts to return, with southerly gusts around 25-30 kts persisting through the end of the forecast period. Winds will shift southerly with the passage of the warm front, and remain southerly through the remainder of the forecast period, sustained around 10-15 kts.

EAX WATCHES/WARNINGS/ADVISORIES

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