WEATHER BLOG: Thursday

Throughout the entire region, most temperatures this afternoon will still manage to reach the upper 60s and lower 70s, even though clouds will only be breaking for limited sunshine.

The facts still remain that the surface wind will be primarily out of the southwest after lunchtime, and behind this so-called 'cold' front -- there's no real source of chilly air that will be getting unleashed in areas east of the Appalachian Mountains.

There's an upper-level low pressure system, which will be lifting out to the north and east into southeastern Ontario this afternoon -- and it is beneath that pool of cold air aloft that cities such as Cleveland and Toronto will probably be no higher than the 50s later today.

The focus of our attention later this afternoon will be on a parcel of jet stream energy that will be rotating around the base of a very large upper-level trough, because it will be a catalyst for another round of showers.

Many of these will be blossoming over the central and southern Appalachians before pivoting to the northeast and affecting portions of Maryland, Virginia and the rest of the mid-Atlantic region before night falls.

Then, these showers should die out rather rapidly, and the overnight hours will bring partial clearing.

In those areas where the wind is light enough overnight, especially since there's been a decent shot of rain the past several hours, fog should form late. But tomorrow is still looking pretty good with no less than partial sunshine, and a gentle west wind. Most high temperatures will be in the lower 70s.