The computer models for the past 24 hours have been showing slightly less moisture associated with tonight’s system – the first of two. As a result I’m changing my forecast from 1-3″ to a coating to 2.” Area to the north and higher elevations could see some amounts closer to 3″.
Look for light snow to overspread our area from 8 pm – 11 pm. Snow should continue overnight but should end by morning. Tomorrow will be a good day to clean up and get ready for round 2 as our high temperature should get to 40.
The Saturday night-Sunday storm will have more moisture and energy associated with it. Clouds will increase Saturday and light snow will start in the afternoon. The front end of this storm looks to have heavy snow at times. We could even receive 1+” of snow per hour at the peak of the storm.
Then warmer air will start working in the upper atmosphere and that will first mix the snow with sleet and then freezing rain. We need to be on the watch for the potential for an extended period of icing early Sunday morning.
Depending on the exact track of the storm, some areas, especially in the couth, could even change over to rain at time Sunday morning before much, much colder air arrives by mid-day. This should change any mixed precipitation back to snow for a short time and there could be additional snow accumulations.
The cold air is going to arrive quickly on Sunday. So fast that there could even be flash freezing. Any untreated water on walkways and roads will freeze up and ice over. The temperature could drop 20+ degrees in a few hours. Temperature should go from the low 30’s (or slightly higher where there’s rain) to near 20 by the end of the afternoon into the teens in the evening. Monday morning low should be just above zero. Wind chills on Monday will be bitter and the high temperature will struggle to get out of the single digits into the low to mid teens. Wind chills will be below zero in the morning.
Now is the time to prepare your house and car for the extreme cold weather ahead. I would avoid travel Saturday night into Monday if possible.
How much snow for Saturday into Sunday? Right now I’m leaning towards 4-8″ for our area. Some areas to our NW will be measuring snow potentially in feet, not inches. I’ll be keeping an eye on this and will update accordingly.
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