A two-part winter storm that could first move in on Sunday and last through Thursday could possibly bring some of the first measurable snow of the winter to the Merrimack Valley.
Pete Bouchard, chief meteorologist at Patch news partner WHDH-TV, said in a blog post Wednesday that the first storm from Sunday afternoon through Monday will have light precipitation. And that favors a greater chance of "wet than white," since heavy precipitation can pull in its own cold air.
And Bouchard's co-worker, Jeremy Reiner, agreed by saying that "it does not look like a big storm" and "it does look like a cold storm."
He expects some patchy light snow and flurries all day on Sunday. But Reiner thinks that the storm has the potential to become a major storm to include snow, sleet, freezing rain and rain.
"Too soon for rain/snow lines or 'how much in my town' but use the next few days to find the shovels, test the snow-blowers and buy that first bag of sand/salt.
The second storm, forecasted to arrive on Tuesday "is bigger, colder, and will be a long duration event," Bouchard said. Some models call for it to last from Tuesday through Thursday, Bouchad wrote, calling that "a stretch."
"It certainly means several inches of snow is possible," Bouchard wrote.