Area Forecast Discussion
Issued by NWS Topeka, KS
Issued by NWS Topeka, KS
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588 FXUS63 KTOP 270941 AFDTOP Area Forecast Discussion National Weather Service Topeka KS 341 AM CST Thu Nov 27 2025 .KEY MESSAGES... -Rain changes to snow on Saturday with minor accumulations possible, especially across far northern KS. -A Canadian based air mass brings cold weather and frigid wind chills late this week and early next week. -Another round of light snow is possible on Monday, but much uncertainty remains on where and how much. && .DISCUSSION... Issued at 327 AM CST Thu Nov 27 2025 Surface high pressure remains anchored over the central CONUS today. Early morning water vapor imagery shows northwest flow persisting aloft with the center of a large storm system north of the Great Lakes. Another mid-level storm system, seen well off of the Pacific Northwest coastline, will be the next to bring precipitation to the region this weekend. Until then, today will feature light winds, a passing mid-level cloud deck and temperatures slightly less than normal in the low to mid 40s. High pressure will slide east on Friday as that next system moves over the Intermountain West region as an open wave. Winds will begin to increase out of the southeast as surface low pressure develops west of the area. Highs will be comparable to today, mainly in the 40s. Precipitation then develops late Friday and become widespread across the forecast area on Saturday as the surface low tracks through southern and southeastern KS. Rain is still expected to change to snow from northwest to southeast as the low moves into Missouri and colder air wraps in behind it. QPF has increased in the current forecast, and decided to trend temperatures down slightly on Saturday, closer to the wet bulb temperature. With those changes, the probability for at least 1.0" of snowfall accumulation in far northern KS has increased slightly, to around 40 percent. Locations south of there are more likely to just see a trace, keeping impacts low. However, strong northwest winds gusting to 30-40 mph could create low visibility while snow is falling. Snow will end from west to east Saturday afternoon and evening. Temperatures then become the main concern as a 1035mb ridge builds southward out of Canada on Sunday. High temperatures Sunday and Monday will only be in the 20s. Wind chill values will be in the teens Sunday afternoon and single digits by early Monday morning. The next mid-level trough axis will also approach the area on Monday. The better lift and moisture should remain well to the south, however, long range models are showing some light QPF over eastern KS. Given the cold air mass in place, any precipitation would be snow with fairly high snow-to-liquid ratios. For now, there remains quite of bit of uncertainty on whether we will see snow and how much, but potential exists for at least minor accumulations. Temperatures gradually moderate into the middle of next week with dry weather expected beyond Monday. && .AVIATION /06Z TAFS THROUGH 06Z FRIDAY/... Issued at 940 PM CST Wed Nov 26 2025 Any flurries or sprinkles look to remain south of the terminals as a mid-level deck of clouds moves overhead with plenty of dry low level air in place. Still expect the mid-level deck to exit the region around 9-10Z leaving mostly scattered higher level clouds in place for the balance of the period. Winds remain light and generally variable through the period. && .TOP WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...Teefey AVIATION...Drake