Winter Weather Updated Timeline For Snow Ice And Temperatures

Monday January 25 2021 Evening Update

As the snow and wintry mix move in this evening, I’ve prepared a new update with simulations for temperatures and radar.

The atmosphere is set up The Winter Weather Advisory has been expanded to include metro Washington, Annapolis, and across much of Delmarva. This is because the storm will develop its own cold air. That was expected, but it will cover a broader area. The result:

• More of our region in on the action
• Slight increase in potential snow
• Ice may linger longer Tuesday morning

 

Updated Winter Weather Advisory

 

 

Temperatures

Turning Colder As Precipitation Develops. I discussed this in the prior report how the dry air will allow the falling snow and mix to sublimate/evaporate. That will generate the colder air.

I’ve highlighted central areas near and below freezing.

 

—-> slider

Note: The freezing temps may linger longer in the morning depending on where ice and snow has accumulated on the ground.

 

When Will It Begin?

Here is my original call for the ‘arrival’ time.  Compare this to the latest simulation below and what actually falls outside your window.

 

Tracking on local radar?

You can do that on this local weather page.

It is important to note that in winter with dry air, radar can show snow (etc) falling that does not reach the ground. That is VIRGA. The ‘stuff’ is falling from the clouds that gets measured, but it sublimates or evaporates before reaching the ground. That is what is expected to help cool the air, but the precise time until you see ‘stuff’ falling is the wildcard.

 

Radar Simulation —-> slider

This is not perfect, but the latest model update. See how the snow and ice expand after first starting with the cooling temps.

See if you can compare with the actual radar to see if it timing lines up.

*Tuesday morning freezing rain may be spotty, and confined to the inland counties west and north of Baltimore.

 

 

 

My Final Call For Snow And Ice

 

 

 

More Info To Explore: NEW PAGE

Winter Weather Resources

Everything I could it about our local weather and auto updating NWS Maps

 

What About The Thursday Storm?

I saw the latest models pushed the snow south. I am not worried about that. I expect this first storm may kick a little north, and the second one may follow, with a display on the models as this passes through.

We can address that next.

Faith in the Flakes – FITF