... Dry and seasonably warm weather will be interrupted by a Thursday cold front.
NEAR TERM /THROUGH TUESDAY/... No changes needed for the evening update.
High pressure will keep the region dry and provide warmer temperatures.
SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/... Dry weather is expected through Wednesday as the sfc high moves east across the Ohio Valley region. NW flow aloft will be replaced by an upper ridge by Wednesday, resulting in a gradual warming trend to above seasonable temperatures.
The ridge should shift eastward Wednesday night as an upper trough, and its associated sfc cold front, advance from the Midwest. Shower chances are expected to return late Wednesday night, mainly across OH, as the trough/front approaches.
LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... Showers are likely Thursday as the trough and associated sfc cold front approach and cross the region. Model ensembles then indicate broad upper troughing setting up across much of the Eastern CONUS through the weekend, as sfc high pressure builds underneath.
Generally dry and seasonably cool weather is expected through this period, though a shortwave crossing through the main trough could return minimal/slight chances for showers Saturday.