January 24 Weather Cold Air In Place For Snow And Ice Monday Then Snow Thursday

Sunday January 24 2021

This morning starts in the deep freeze for much of our region, but we remain dry to finish the weekend. This cold air is important to establish a cold ground before the first winter event arrives later on Monday. We still have a second ‘storm’ to watch Thursday that will be stronger and colder.  The question on that will be how close it tracks to us.

Two Storms Forecast Animation

Here is the Canadian GEM Model perspective. Here we see snow and freezing rain develop later Monday into Tuesday morning. I believe the thaw and rain (green) on Tuesday  might be a little overdone.  The second storm looks stronger and colder with more snow on Thursday.

Closer Look

Let’s get back to the first event, which has always been advertised as a ‘mix’ event.  The cold air looks deep and strong enough to allow for a start with snow and sleet. The early call in this is for the potential of 1 to 2 inches, with some higher amounts on the north end. Snow and sleet with turn to freezing rain overnight into Tuesday morning.

I will post my call in the next report.

The slow push of warmer air and the cold, frozen ground will be the concern for ice lasting longer, regardless how much falls.  Here are the storm maps.

Cold Air Set Up: Temperatures

Sunday Morning Observations 

Sunday Afternoon Forecast

Monday Morning Forecast

Storm Set Up

The latest suggestion has the energy splitting Monday night.  We are still on for the arrival between 3 PM and 7 PM. This should begin as snow and sleet across most of the region.

The change might be less moisture if the northern peice splits and fades.  But there is still enough to make an impact into Tuesday morning.

Forecast Maps: NAM 3KM Model

This is the most aggressive with the snow and ice, but does show the bulk before Tuesday morning.

The take away here is that there will be a burst with the onset, and lingering showers on Tuesday.

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