As of noon Wednesday, a Winter Storm Warning is in effect for all of Midcoast Maine with a nor'easter set to bring heavy snow late Wednesday and through Thursday, March 7 and 8.

A storm system will move through the Ohio River Valley Tuesday, then redevelop and intensify off the Mid Atlantic coast Wednesday. This will begin to push in areas of light snow across the Midcoast by Wednesday afternoon with just a dusting to 2 inches likely during daylight hours. The storm system will push northeast and move through southern New England then into the Gulf of Maine late Wednesday and into Thursday, which will increase wind and snowfall rates for the Midcoast. Snow should pile up fast after 8 p.m. Wednesday night and continue through Thursday morning with some rain mix possible along the immediate coast. Snowfall rates of 1 to 2 inches per hour will be possible during this period with localized heavy bands of up to 3 inches per hour. Snow will taper off late Thursday afternoon and into the overnight as the storm begins to unwind, leaving some lingering flurries into Friday.

Snow totals overall should fall between a foot and a foot and a half for most of the Midcoast with lesser amounts possible along the immediate coast where rain may mix at times. The milder air toward the coast will also make for a denser sticky wet snow while colder air inland will make for a fluffier and drier snow. If colder air is able to hold closer to the ocean, snow totals would be on the higher range with less compaction.

Winds could cause some issues during this storm, with speeds gradually increasing out of the northeast through Wednesday eventually peaking during the late night and into early Thursday morning. Wind speeds will be sustained between 15 to 25mph with gusts up to 40mph. The combination of stronger winds and heavy wet snow may result in downed limbs and trees resulting in scattered power outages. Winds will gradually decrease Thursday afternoon while becoming more south and southwesterly.

A Storm Warning is posted through this period with seas remaining between 3 to 6 feet for Penobscot Bay and 6 to 12 feet into the northern Gulf of Maine Wednesday, building to up to 20 feet offshore Thursday.