Shot of Cold

If you follow me on Twitter (@johndissauer) you know that I have been talking about a BIG shot of cold air coming down for the Midwest early next week. I've been looking over data trickling in this morning and it still looks to be the case.

Interesting to note that the European computer model and NOAA's Global Forecast model are similar but have subtle differences. Last night's run of the European model is much more aggressive with the cold air intrusion but holds it off for a Wednesday arrival. The later arrival is about a 24 hour delay as to what it has been showing for several days.

NOAA's morning run of the Global Forecast model continues to bring in the cold air starting Tuesday. (Tuesday night is looking cold! Good thing we don't have a snow pack on the ground or it would be really cold.)

I am still waiting for the rest of the morning's GFS to come in so I can take a look further out and I am waiting for the morning run of the European model to come in.

Never the less, I would plan on the coldest air of the season (so far) to arrive Tuesday/Wednesday of next week.

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Happy start to Meteorological Winter!

Yes, today marks the beginning of Meteorological Winter. The year breaks down like this...

• Winter: December 1 - February 28 (or 29)
• Spring: March 1 - May 31
• Summer: June 1 - August 31
• Fall: September 1 - November 30