Area Forecast Discussion
Issued by NWS Topeka, KS
Issued by NWS Topeka, KS
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022 FXUS63 KTOP 241123 AFDTOP Area Forecast Discussion National Weather Service Topeka KS 623 AM CDT Sat Oct 24 2026 .KEY MESSAGES... - Dry and Warm through Sunday. - Rain chances (20-50%) return across central Kansas Sunday night into Monday. - Low-end chances for precipitation (20%) continues off an on through Thursday, but most will remain dry. && .DISCUSSION... Issued at 247 AM CDT Sat Oct 24 2026 Minimal changes to the overall synoptic pattern have occurred over the past 12 hours as a shortwave ridge remains across the southern and central Plains ahead of a strong upper low over the desert southwest/4-corners region. Another wave tied in closer with the polar jet has tried to phase in with the southern cyclone across the northern Rockies but is expected to continue off into the northern US and southern Canada over the next few days. This should leave the southern cyclone cutoff from the main flow. A slow east-ward progression of the southern cyclone will continue over the weekend with ample upper-level moisture filtering into the central Plains out ahead of the trough axis. Expect dry conditions with scattered to broken cirrus decks today and Sunday as temperatures under the mid-level ridge warm into the upper 70s and low 80s. By Sunday evening, the slow-moving upper low ejects off the central Rockies and into the central Plains. This should push decent mid- level and isentropic ascent across western and central Kansas increasing PoPs Sunday night and into Monday afternoon. Some weak instability may be associated within precipitation Monday morning that could produce some isolated thunder, but overall, rain showers are the expected precipitation mode. Areas across far eastern Kansas will likely not see too many chances for precipitation with this wave as ascent should stay west and then north of these areas. By Tuesday and following Monday`s upper cyclone northern passage, southwesterly flow builds across the central US. Some scattered nodes of vorticity embedded in the flow are expected to move through Tuesday morning and with the presence of a 30 knot LLJ, some light precipitation could be noted across eastern Kansas. Forcing should quickly weaken through the day leaving most of the area dry. The end of the week will see similar set ups for precipitation as weak forcing aloft and southerly flow keep low end PoPs for Wednesday and Thursday (<20%). An upper low passing north of the area should try to push a weak boundary through the area late week as well that could again be a better focal point for precipitation. Long range ensemble guidance for the remainder of October seems to hint at above-average temperatures as mid-level ridging and southwesterly flow keeps WAA likely. Will continue to monitor these trends, but this pattern seems very much in line with typical El Nino conditions as we head into the winter months. && .AVIATION /12Z TAFS THROUGH 12Z SUNDAY/... Issued at 622 AM CDT Sat Oct 24 2026 VFR TAFs are expected to continue with scattered to broken high clouds and light southerly winds. Wind gusts may creep in by this afternoon, but should stay below 20 mph. && .TOP WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...Griesemer AVIATION...Griesemer