Fortunately, models have trended drier and south with tomorrow’s potential ice storm. Right now it looks like PG, Calvert, and St. Mary’s counties are the unlucky winners of a significant icing event, but even there, expected precipitation totals are much diminished compared to model runs a couple of days ago. A word of caution, however, because just about every storm this winter has had some significant changes in the forecast in the 24 hours before onset, so central MD could still be impacted.
As of now, light sleet and freezing rain should spread into the southern counties mentioned above during the morning hours tomorrow. Keep in mind that light freezing rain is generally the worst when temperatures are not super-cold, like now, because it has the highest accretion rates (accumulation), so any freezing rain should be taken seriously. For central MD, patchy light freezing rain or drizzle is possible during the afternoon and throughout Saturday night into early Sunday morning so know that icy conditions may be present throughout the region until temperatures climb above freezing midday Sunday.
I’ll update again tomorrow morning with any changes.
The Weather Mill 