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Meteorologist Mark’s Wx Blog for Tues., Dec. 22


A beautiful December day today!

Winds and clouds increase for Wednesday

Snowflakes expected Christmas Eve

Meteorologist Mark’s Vlog in a Flash

48-Hour WX

Seven-Day Forecast

Daily Forecast Summary

Today: Mostly sunny and pleasant.

Wednesday: Both clouds and winds increase. Mild. Rain and snow develop overnight.

Thursday: Rain changing to snow. Turning much colder. Bitter cold air overnight.

Christmas: Sunny and cold.

Saturday: Mostly sunny. A bit warmer.

Sunday: Increasing clouds, with rain and snow developing overnight.

Monday: Morning rain and snow. Otherwise, mostly cloudy skies.


The Snow Scale is unchanged from yesterday’s outlook. My confidence is still pretty high that we’ll see snow flakes fall on Christmas Eve. I’m also rather certain that it won’t accumulate to much. Depending on today’s data, I may increase my confidence even more, but the amount of snow will likely stay below one inch. Data up until now has strongly suggested around a dusting to one half inch. We’ll see if anything changes today. Still, it will be nice to see some snow flakes for the holiday!

Also, be aware that some very cold air is coming with this system. Make sure outdoor pets and plumbing are taken care of before the cold air gets here!

Meteorologist Mark’s Snow Scale

On This Day in Wx History

1989- Temperature at Clarksville drops to -12, tying the record low for the month. Nashville breaks its monthly record with a reading of -10. Crossville’s -8 degrees sets a new daily mark.


Yesterday’s National Temperature Extremes

High: 87° at Chino, Pala, & Woodland Hills, California 

Low: -10° at Gunnison, Colorado

Today’s National Wx Hazards

Snowflakes will accumulate today across parts of New England. We’ll also see snow piling up along the northern tier of the US border, as well as across the Front Range of the Rockies, the northern Rockies, and the mountains of the Pacific Northwest. A lot of White Christmases this year!

Tomorrow’s National Wx Hazards

Accumulating snowfall will be found across the Upper Midwest, as well as across western Colorado. Very heavy snow could fall across northern Minnesota and Wisconsin, possibly stretching into the Upper Peninsula of Michigan. The blue-shaded areas represent rain mixed with snow, with little to no accumulation. A wildfire danger increases across southern California.

 Weather Shots

I snapped this pic yesterday evening, while waiting on the sun to set. I love the geometry the tree limbs create! I hope you all had a chance to see the conjuncture of Jupiter and Saturn after sunset! If you missed it go out this evening. It will still be a cool sight to see! Just look southwest after sunset.

NASA Nerdology 

Have you ever thought about what equinoxes and solstices look like from space? In 2010 and 2011, SEVIRI on Meteosat-9 captured these 4 views of how sunlight fell on the Earth during the winter solstice, spring equinox, summer solstice, and fall equinox. How cool is it that we get to see such images?

You all have a great day!

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