FXUS63 KTOP 241937 AFDTOP Area Forecast Discussion National Weather Service Topeka KS 237 PM CDT Fri Oct 24 2025 .KEY MESSAGES... - Overcast skies and occasional showers are expected to stick around into Sunday. - Another frontal system is expected to move through Monday night and Tuesday with a chance for rain. - Cool temperatures should remain in place through next week. && .DISCUSSION... Issued at 237 PM CDT Fri Oct 24 2025 19Z water vapor imagery showed a closed upper low over the central Rockies with an upper trough off the northwest coast. Surface obs showed a low over the southern high plains with an inverted trough into central KS. Southerly winds at 925MB and 850MB were advecting moisture north into the region. There is good agreement from the models in the handling of the storm system tonight through the weekend. The upper low is expected to propagate east along the KS/OK state line through Sunday keeping the forecast area on the north and cooler side of the system. This should keep overcast skies and occasional showers in place into Saturday night. As the system begins to move east Sunday, increasing subsidence is progged to limit chances for rain to maybe a few isolated showers in the morning. Low and mid level lapse rates are expected to remain in the 5 to 6 C/km range limiting the potential for thunder to around 5 percent. Easterly winds and overcast skies are forecast to limit much of a diurnal change in temperature with lows around 50 and highs in the middle and upper 50s expected through the weekend. A shortwave trough is progged to move through the central plains within a northwest flow Monday and Tuesday. 12Z guidance has trended towards closing off the shortwave just east of the forecast area on Tuesday, which has implications for a slower progression to the pattern next week. In any case another frontal system should move through the area Monday night and Tuesday with a chance for showers. The NBM initialization appears reasonable with 30 to 40 percent chances late Monday night and Tuesday. A second shortwave may move through the central U.S. towards the end of the forecast period. Northwest flow is expected to limit the opportunity for moisture return from the gulf, so models keep a dry forecast through the end of the week. There doesn't look to be any strong warm air advection through next week, so temperatures are forecast to remain quite fall like with highs around 60. The ensembles indicate an increasing probability for freezing temperatures Thursday or Friday. For now lows are forecast to remain in the middle and upper 30s to end the week. && .AVIATION /18Z TAFS THROUGH 18Z SATURDAY/... Issued at 1142 AM CDT Fri Oct 24 2025 IFR CIGs are forecast to develop this evening and are likely to persist into Saturday as low level moisture continues to wrap around the low pressure system to the south. A break in SHRA is anticipated this afternoon and evening. The next wave of moisture is expected around midday with more wide spread SHRA. && .TOP WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...Wolters AVIATION...Wolters