3:00 PM | Coldest air yet to bring temperatures to near freezing later this week in suburban locations along I-95
The coldest air mass of the season will move into the Mid-Atlantic region on Wednesday and temperatures will likely flirt with the freezing mark in many suburban location along I-95 in the early morning hours of Thursday, Friday and Saturday. Widespread frost and freeze warnings are likely by the mid-week from the Midwestern states to the Mid-Atlantic region for the first time this season and snow showers are likely from the Upper Midwest to the Appalachians. The overall weather pattern is evolving into one that will feature large scale high pressure ridging along the west coasts of the US and Canada along with a deep upper level trough of low pressure centered in the Northeast US. This first chilly air mass will linger into the weekend in the Mid-Atlantic region and then there will likely be another widespread cold air outbreak next week that could linger into Halloween for much of the country. This is not the beginning of “locked-in” winter cold; however, as we’ll likely get milder again for a while following a couple of colder-than-normal weeks to close out October and begin November.