The weather service also issued an urgent winter weather advisory about freezing rain and sleet Saturday, along with what it called a "flash freeze".
Darren LeBrun, the Scioto County Engineer said their main focus will be pretreating the roads, especially anytime there is ice in the forecast. Temperatures will make a run at the records (which were set a year ago in both Boston and Worcester). Temps begin a rapid fall after midnight. A high of 22 was expected Friday before an overnight low of 8 degrees Friday night as lake effect snow could lead to snow showers in the area.
The combination of very mild temperatures and some torrential downpours will cause widespread urban/street flooding. The rain to ice change happens from 11 AM to 1 PM from Fayetteville and Huntsville to Decatur and Moulton, then from 1 PM to 3 PM over Sand Mountain around Scottsboro, Fort Payne, Guntersville, and Boaz. Winds will gust 40-to-50 miles per hour within some of the downpours over southeastern Mass. Any problems on areas roads will stay that way until the mid-morning hours on Saturday. Saturday and Sunday, a chinook will warm things up a bit, and we'll have some warmer temperatures into next week. The storm will start as rain and switch over to a mix of freezing rain and sleet before making the switch over to pure snow in the evening through Saturday morning. This system will create some hazardous travel with ice/sleet and snow accumulation with the colder air in place as the day wears on.
"Motorists should be alert for ponding of water on road surfaces", the alert states. Wind chill temperatures will be as low as 5 to 15 degrees below zero at times from overnight Saturday night through Tuesday night.
The cold that arrives on Saturday will stick around a while (again). How much snow are we going to get? It is too bad that the "January Thaw" will be so short-lived.
The general weather pattern will feature upper-level energy originating from the Canadian Arctic plunging southward, reinforcing a sharp, U-shaped trough in the jet stream over the eastern half of the nation.