Area Forecast Discussion
Issued by NWS Topeka, KS
Issued by NWS Topeka, KS
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547 FXUS63 KTOP 131856 AFDTOP Area Forecast Discussion National Weather Service Topeka KS 1256 PM CST Fri Feb 13 2026 .KEY MESSAGES... - Rain and a few rumbles of thunder tonight through Saturday, highest rainfall totals along and south of I-70. - Warm, breezy and dry conditions may lead to heightened fire concerns Tuesday, Wednesday and Thursday next week. && .DISCUSSION... Issued at 1201 PM CST Fri Feb 13 2026 A distinct transition to an active weather pattern is underway across the Central Plains. A southern stream upper trough, currently lifting out of the Desert Southwest and will drive a surface low across the southern Plains tonight. This setup facilitates strong isentropic ascent and deep moisture transport into eastern Kansas and will lead to widespread rain tonight. Precipitation is expected to develop around 10-11pm across southern Kansas and spread north and east overnight. High-res guidance and ensembles continue to have a fairly large spread but there is some general clustering of rainfall totals around 0.25 across northeast Kansas and up to 1.50 inches across southeast Kansas. While instability is meager (MUCAPE <300 J/kg), it is sufficient to support embedded thunder which may locally enhance rainfall rates. No severe weather is expected. Rain should end from west to east later Saturday afternoon. As the system departs, a brief period of shortwave ridging will clear skies for Sunday, serving as a pivot point before impacts shift to fire weather. By Monday and Tuesday, a deepening lee trough will establish a tight pressure gradient across the region. Sustained wind around 20 mph and gusts to 45 mph are favored. Highs in the 70s are favored for Tuesday and Wednesday. The combination of these unseasonably warm temperatures, deep mixing, and strong south-southwest winds will rapidly dry out fuels. Despite the wetting rains tonight and tomorrow, the dormant vegetation will cure quickly, creating a setup for elevated to critical fire conditions Tuesday through Thursday of next week. The pattern looks to cool slightly with a return to low-end precipitation chances by late next week. && .AVIATION /18Z TAFS THROUGH 18Z SATURDAY/... Issued at 1107 AM CST Fri Feb 13 2026 VFR becoming IFR later tonight. Light easterly wind and high clouds will continue through the evening. There is some uncertainty as to when rain will start at the terminals given the large amount of dry air in place that will evaporate initial rainfall. Therefore, elected to place a PROB group in for the late evening. More robust rain showers should move into the area around 07-08z tonight. Widespread showers are expected through most of the night/morning. Showers become more scattered and lighter as the day progresses Saturday. && .FIRE WEATHER... Issued at 1201 PM CST Fri Feb 13 2026 While the immediate focus is on rainfall, partners should be alerted to a rapidly evolving fire weather threat for Tuesday through Thursday. The combination of unseasonably warm temperatures, deep mixing, and strong south-southwest winds will rapidly dry out fuels. Despite the wetting rains tonight and tomorrow, the dormant vegetation will cure quickly, creating a setup for elevated to critical fire conditions Tuesday through Thursday of next week. Relative humidity falling into the 20-30% range and sustained wind of 20-30 mph with gusts approaching 45 mph are possible Tuesday and Thursday afternoons. While wind speeds may be slightly less on Wednesday, humidity may be the lowest of the week, potentially less than 20%. If the rain tonight/tomorrow underperforms, fire concerns will only be magnified. && .TOP WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...Jones AVIATION...Jones FIRE WEATHER...Jones