FXUS61 KILN 062017 AFDILN Area Forecast Discussion National Weather Service Wilmington OH 417 PM EDT Sun Apr 6 2025 .SYNOPSIS... One last wave of low pressure will bring precipitation to the Ohio Valley this evening. High pressure briefly builds in late tonight and early Monday, before a cold front moves through the area Monday afternoon. Drier weather and high pressure will return to the region Tuesday into Tuesday night. Much below normal temperatures are forecast through much of the week. && .NEAR TERM /UNTIL 6 AM MONDAY MORNING/... One last wave of rain is expected to move across the Ohio Valley late this afternoon and evening. Decided to cancel the Flood Watch as new rainfall amounts will be light however some Flood Advisories will remain in effect due to ongoing flooding/road closures from earlier heavy rainfall. Given colder air moving in from the northwest, some wet snow could mix in with the rain this evening from east-central Indiana into western and central Ohio. No accumulation is expected. Much of the precip will be to the east after midnight. Drier air and some clearing should occur from northwest to southeast late at night. While the wind will diminish some, not sure that winds will be light and any frost formation may be limited even with lows dropping into the the lower to mid 30s tonight. && .SHORT TERM /6 AM MONDAY MORNING THROUGH MONDAY NIGHT/... On Monday, a trough will be found across the Great Lakes and Northeast. A cold front will move through in the afternoon. Front may be able to squeeze out a few showers especially across west-central and central Ohio. Highs will be in the 50s on Monday. Monday night, there will be another shot of cold advection, sending temperatures into the lower to mid 20s for lows. We have initiated the beginning of the spring frost/freeze season and therefore have issued a Freeze Watch. && .LONG TERM /TUESDAY THROUGH SUNDAY/... On Tuesday, surface high pressure pays a brief visit. Despite some sunshine, it will be chilly with highs only in the lower to mid 40s. Tuesday night will feature another cold night, with sub-freezing temperatures with decent radiational cooling. By Wednesday, high pressure moves away and another quick moving shortwave/front will bring more clouds and a chance of precipitation particularly Wednesday night and Thursday. Ohio Valley likely will remain influenced by a trough through the rest of the week. This would generally lead to unsettled conditions and below normal temperatures. Trough may start to retreat over the weekend, although confidence is low on details this weekend as sometimes these troughs linger longer than what early guidance suggests. && .AVIATION /20Z SUNDAY THROUGH FRIDAY/... Variable conditions have been observed early this afternoon, but as another area of rain moves across the terminals during the mid to late afternoon, expect prevailing MVFR conditions with the possibility of occasional IFR conditions especially over the Cincinnati terminals. Once rain ends this evening (perhaps even mixing with wet snowflakes near KCMH/KLCK), low level moisture may keep MVFR cigs and/or vsbys in place for a while tonight. The degree of clearing late tonight is uncertain, however if clearing does occur from the northwest (affecting locations such as KDAY) and winds become light, then low vsbys in fog may be possible. However have not included this in TAFs currently due to low confidence. Trend is for VFR conditions to return Monday morning. OUTLOOK...MVFR conditions possible Monday afternoon into Monday evening. MVFR/IFR conditions possible Wednesday night into Thursday. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...Freeze Watch from late Monday night through Tuesday morning for OHZ026-034-035-042>046-051>056-060>065-070>074-077>082-088. KY...Freeze Watch from late Monday night through Tuesday morning for KYZ089>100. IN...Freeze Watch from late Monday night through Tuesday morning for INZ050-058-059-066-073>075-080. && $$ SYNOPSIS...BPP NEAR TERM...BPP SHORT TERM...BPP LONG TERM...BPP AVIATION...BPP