


Area Forecast Discussion
Issued by NWS Kansas City/Pleasant Hill, MO
Issued by NWS Kansas City/Pleasant Hill, MO
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186 FXUS63 KEAX 260908 AFDEAX Area Forecast Discussion National Weather Service Kansas City/Pleasant Hill MO 408 AM CDT Thu Jun 26 2025 .KEY MESSAGES... - Severe storms possible Thursday afternoon into the evening. The main threats will be damaging winds and heavy rainfall. - Hot and humid conditions persist through the weekend with a few sporadic chances for storms. Additional thunderstorms and cooler temperatures possible early next week. && .DISCUSSION... Issued at 406 AM CDT Thu Jun 26 2025 Mid-upper level ridging in the southeast U.S. remains the dominant weather feature resulting in hot and humid conditions across the area. Highs for today are anticipated to range in the upper 80s to low 90s. This afternoon into this evening, mid-upper level troughing extending from western MN into southeastern NE, pushes a surface front through the area providing sufficient lift for initiating thunderstorms. Storms are anticipated to develop near northwest MO this afternoon and move through the rest of the area through the night. Good diurnal heating and humid conditions reflected in dew points to the low 70s combined with CAPE values ranging from 2,500- 3,000 J/kg allude to decent instability and the potential for strong updrafts. Weak bulk shear values (less than 20 kts) imply any storms that do develop will likely be disorganized and short-lived. Given this environment and DCAPE values ranging from 800-900 J/kg, a few of the strongest storms could produce damaging to severe winds gusts. The threat for severe hail is extremely low given the short, disorganized nature of the storms not allowing time for significant hail growth. The severe threat is expected to coincide with the warmest times of the day as that is when instability is the highest. If a stout H850 low-level jet develops later in the evening, the severe threat could be prolonged as it increases low-level shear and instability, however the LREF only has a ~20% chance of H850 winds reaching 30 mph. Potentially strong updrafts and PWATs exceeding 2 inches suggest the potential for efficient rain producing storms. This could result in brief, heavy downpours. Weak MBE velocity vectors suggest the potential for slow storm motions and training storms raining over the same areas. Some localized flooding is possible with additional rainfall, especially in northern MO where areas have already received significant rainfall amounts. There is some uncertainty with the placement and timing of the front. With the storms tied so closely to the surface boundary, if the surface front is slower in its progression, flooding concerns increase. However, according to a few of the CAMs, the front remains progressive enough to limit flooding concerns. Thunderstorms are expected to linger into Friday morning as the front stalls out south of the HWY-36 corridor prompting additional storm chances Friday evening. Friday, a H5 shortwave moves through the flow. Depending on where the previous day`s boundary stalls out, would determine where storms form for tomorrow. A few of the high-resolution models suggest the best chances remaining to the south of I-70. Uncertainty is still fairly high with diverging solutions among models. Hot and humid conditions persist through the weekend due to the influence of the ridge in the southeast U.S. A few vort maxima move through the flow on the northwestern periphery of the ridge possibly providing some low-end chances for storms over the weekend. Heat indices for this weekend stay in the 90s to low 100s. Storm chances and likely cooler conditions return early next week with stout mid to upper level troughing pushing a cold front through the area. && .AVIATION /00Z TAFS THROUGH 00Z FRIDAY/... Issued at 1048 PM CDT Wed Jun 25 2025 VFR conditions are expected through the period. Thunderstorms are becoming more likely tomorrow late afternoon and evening. Latest HREF shows a >70% for storms to move into the area from the northwest between 23Z and the end of this forecast. Have added a PROB30 group to all sites for the most likely time frame for each site based on latest guidance. South winds of 5-10 mph expected overnight, increasing and veering slightly tomorrow morning and afternoon. If a line of storms does affect the area tomorrow, anticipate brief reductions and visibility and ceilings along with brief gusty winds. && .EAX WATCHES/WARNINGS/ADVISORIES... MO...None. KS...None. && $$ DISCUSSION...Collier AVIATION...CDB