A weak system will cross the area tomorrow night bringing mostly light precipitation, and mainly snow, to central MD Thursday evening and into early Friday morning. Precipitation will develop from west to east from about 5 to 7PM, and though it may be spotty, there may initially be some snow showers that are moderate in nature. Temperatures likely will be above freezing during the day tomorrow, but once the precipitation begins, they should fall below freezing rather quickly along and west of I-95. As a result, depending on when the snow starts and where the heavier snow showers develop, tomorrow evening’s commute may become difficult in these areas.
After the initial burst of snow tomorrow evening, the snow should generally be light and continue into very early morning ending well before sunrise Friday. Right now, 1 – 3″ is possible, but I’ll update tomorrow if there are any changes.
Looking ahead to the weekend, what looked like a pretty impressive rainstorm a few days ago, may be morphing into a more wintry scenario. Two pieces of energy that were modeled a couple of days ago to phase causing the storm to pass well to our west and north, now may remain separate. If they do stay separate, the southern piece of energy may pass to our south which could allow enough cold air to be around to give us some winter precipitation. Too early to talk of type or how much, but Saturday afternoon and Sunday could be sloppy. Regardless of what happens with that storm, behind it will bring the coldest air of the season Sunday night and Monday.
The Weather Mill 