Area Forecast Discussion
Issued by NWS Topeka, KS
Issued by NWS Topeka, KS
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221 FXUS63 KTOP 252319 AFDTOP Area Forecast Discussion National Weather Service Topeka KS 619 PM CDT Tue Aug 25 2026 .KEY MESSAGES... - Low-medium confidence in a few severe storms impacting portions of north central Kansas this evening into the overnight period. Primary severe hazard is damaging wind gusts to 70 mph. - Warmer temperatures in the middle 90s with heat indices near 100 degrees Sunday and Monday afternoons. - Precipitation chances return late Sunday - Tuesday amid a slow moving cold front within the region. && .DISCUSSION... Issued at 200 PM CDT Tue Aug 25 2026 MCS and remnant MCV continue to trek southeast across central Kansas this afternoon. Increased northwesterly flow aloft and several embedded perturbations in vicinity of an outflow boundary may provide convergence for an isolated shower or storm in the late afternoon. Most CAMs are inconsistent on coverage and location of isolated convection as overall confidence in development is low. However with the decaying MCV present, have added slight pops across eastern KS into the late afternoon. Isolated severe storms could produce damaging wind gusts and large hail given the marginal deep layer shear and MUCAPE ~3000 J/KG, if they were to form. Overnight convection is still in question for north central KS as the some of the 12Z suite in guidance is trending further west/south with the MCS. Environment ahead of the cold front is supportive of severe storms as MUCAPE is around 3000 J/KG, if the MCS begins to develop in northern KS. Maintained low chance pops for now given the cold front moving through. Added a very low chance for showers and storms cannot be ruled out along the frontal boundary on Wednesday, especially south of I-35 in the afternoon. Drier, sfc high pressure settling southward should result in a pleasant, less humid Wednesday evening with dewpoints near 60 and temps in the low 70s. High pressure sticks around Thursday before shifting eastward as mid level heights increase, leading to southerly winds and warmer temperatures this weekend. Heat indices peak in the low 100s Sunday and Monday as south winds pickup from 15 to 20 mph sustained. The upper ridge flattens on Sunday as a northern stream shortwave trough pushes a cold front through the central plains. Ensembles exhibit a wide variance on timing and location of the front and subsequent convection through Tuesday. Broad low chances seem reasonable as the front meanders in the area. && .AVIATION /00Z TAFS THROUGH 00Z WEDNESDAY/... Issued at 610 PM CDT Tue Aug 25 2026 No significant changes from the current forecast. A period of mid- clouds move back over the region as storm complex moves north to south over western Kansas. No widespread fog impacts anticipated but wouldn`t rule out some minor obscuration into the early morning with the BL moisture and calm winds. Due to the cloud cover, radiational cooling impacts look to be offset so actual fog should be kept in check. && .TOP WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...Prieto AVIATION...Drake