textproduct: Wilmington

SYNOPSIS

Low pressure well northwest of the region will drape a weak cold front south of it which will cross east through the Ohio Valley tonight. High pressure will build west of the region on Sunday, pass to the east, and settle over WV by daybreak Monday. Lingering light wind and clear sky cover from this high's passage will set up a radiational cooling night, bringing cold temperatures that drop to the upper teens and lower 20s. A warming trend will then take place with readings 20-30 degrees above normal expected for the end of the week. Sorry, but a white Christmas is not in the cards this year.

NEAR TERM /UNTIL 6 AM SUNDAY MORNING/

A dry cold front will move southeast across our area through tonight, associated with low pressure moving from well nw to north of the Ohio Valley. In the developing CAA behind the front, lows tonight will range from the lower 20s northwest to around 30 degrees in the southeast.

SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/

Surface high pressure will build into the region through the day on Sunday. This will result in mostly sunny but cool conditions with highs in the 30s. The high passes over the region as it moves east overnight. Light wind and generally clear skies will drop temperatures to the upper teens to low 20s in a radiational cooling setup. Temps will be warmest south and west of metro Cincinnati, and coolest in the Hocking Hills where some mid teens could be found.

LONG TERM /MONDAY THROUGH SATURDAY/

Upper flow will be west to northwest through the extended period. Heights will be fairly stagnant through Tuesday, which will permit a bump in temps due to daytime insolation and sly sfc flow.

Sly flow Mon will turn sw overnight and pool moisture over the region which is expected to get wrung out as light rain during the overnight period. This looks to be due to a sfc low running e along the Canadian/U.S. border from MN to LkSuperior, with an inverted trough extending se of it into the nrn OHVly. High pressure will then make a return appearance, bringing slightly cooler overnight lows for Tue night in the 30s.

There's an indication of a warm front developing over nrn CWA late Wed, with an area of showers riding to the se along it during the overnight due to energy diving se on the east side of the ridge. The best precip chances with this lie e of I-75 and then ne of a Dayton- Chillicothe line. That is of course, according to the latest model runs.

The wmfnt moves n and a sfc low tracks to the ne as it does so for Thu/Fri. Overnight and on Fri, synoptic features significantly diverge and a slight chance of rain result for the remainder of the fcst.

Upper level ridging will result in increased temperatures through at least Thursday, when lower 60s are expected with overnight lows a few degrees on either side of 50. Temps moderate ever so slightly beyond this due to the blended fcst, but still remain well above normal through Sat.

AVIATION /23Z SATURDAY THROUGH THURSDAY/

VFR will continue with just high clouds passing across the region. A front will move through early in the period which will cause winds to veer to the west northwest.

OUTLOOK...MVFR/IFR ceilings possible Monday night into Tuesday.

ILN WATCHES/WARNINGS/ADVISORIES

OH...None. KY...None. IN...None.