


Area Forecast Discussion
Issued by NWS Topeka, KS
Issued by NWS Topeka, KS
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851 FXUS63 KTOP 271845 AFDTOP Area Forecast Discussion National Weather Service Topeka KS 145 PM CDT Wed Aug 27 2025 .KEY MESSAGES... - Rain this evening into Thursday morning. At least 1.5 inches is likely (60% or greater chance) south of a line from Herington to Garnett but the flooding potential remains low. - Cooler temperatures continue through the weekend. Another chance of rain (20-40%) Saturday into Sunday. && .DISCUSSION... Issued at 117 PM CDT Wed Aug 27 2025 Rainfall is likely across portions of central and southeast Kansas into tomorrow morning. Moist advection with southerly surface flow will bring dewpoints into the low 60s by this evening and PWATs around 1.75 inches. A low-level jet will try to nose into our area tonight, but should largely stay to our southwest. The bulk of the instability and more focused lift should also stay to our southwest as a mid-level wave bisects Kansas tonight. With significant dry air in place and the main storm track remaining off to the south and west, far northeast Kansas may see little to no rain with this system. The heaviest precipitation is expected along and south of a line from Minneapolis - Abilene - Herrington - Emporia - Garnett. These and surrounding locations could see 1-2.5 inches of rain. With recent dry conditions and rain rates generally expected to be an inch or less an hour, flash flooding is not favored. Some local rises in creeks and rivers are possible, especially for streams that have their headwaters further west (portions of Saline, Marion and Chase Counties could see above 3 inches of rain). Fog is looking likely tonight with a moist boundary-layer and light wind. The fog and precipitation should exit the area late tomorrow afternoon. Northwest flow remains in place through the weekend. With several waves moving through the mean flow and moisture remaining in place, rain will be possible Saturday into Sunday. && .AVIATION /18Z TAFS THROUGH 18Z THURSDAY/... Issued at 1215 PM CDT Wed Aug 27 2025 VFR becoming IFR tonight. Showers and isolated thunderstorms will move into the area later today and persist until tomorrow morning. Just how far north and east this activity makes it is still in question. The terminals will likely be on the northern edge of the precipitation. Therefore, there may be periods of more/less rain/storms than forecast. The most likely timeframe for precipitation to impact the terminals is early tomorrow morning. Additionally, fog is expected to develop later tonight and into tomorrow. Areas that aren`t seeing rainfall will likely see more fog. All precipitation should be out of the area by late tomorrow afternoon. && .TOP WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...Jones AVIATION...Jones