E PA/NJ/DE Winter 2025-26 Obs/Discussion

[ChescoWx]

A cold weather advisory from the NWS goes into effect from 10pm tonight till 10am tomorrow morning. Highs today before an arctic frontal passage will get close to freezing in spots before dropping quickly by late afternoon. We should fall to the teens during the 7pm hour and near single digits by midnight tonight. Lows tonight should be near 4 degrees above zero and we recover tomorrow to no higher than 15 to 17 degrees. Wind chills near 10 below tomorrow. The well-advertised snowstorm arrives after midnight tomorrow night and could last into Monday morning. Most of Chester County will transition from heavy snow to heavy sleet during the late afternoon on Sunday. This will stop fast accumulating snow and move the area to slow accumulating sleet which does count as snow accumulation....be sure to clean off your snowboards when the snow turns to sleet. Once the storm passes on Monday we will see little melting for at least the next week - in fact, models are hinting we may not see another above freezing day till Groundhog Day in early February. Oh, and indeed I do not think we have seen our last snow event either.