Cold Air Moves inDecember 5th, 2013 at 2:07 am by Bill Steffen under Bill's Blog, Weather
Click on the image to enlarge. This is a map of high temperatures from Weds. Lots of single digit highs in the Western Dakotas down to Denver and out West. Some notable cool high temps: -1 Dillon MT, 6 Williston ND, 9 Rapid City SD, 9 Denver CO (they were 56 the day before!), 0 Gillette WY, 45 Las Vegas, 63 Phoenix. On the warm side: 70 Evansville IN, 71 Louisville KY, 76 Nashville TN, 80 Jackson MS and New Orleans LA. The cold air pushes east into Michigan and south to the Gulf of Mexico today.
Overnight run Model update: NAM caribou (nothing more than a few flurries…temp. down to 29 by 5 pm…high 26 on Fri., 18 Sat. AM and it holds at 21 Sat. afternoon…back to 18 Sun. AM. Winds go light Saturday night and if by chance we were to go clear, it would be down in the single figures. The GFS plot is also down to 29 by 5 pm, high 26 Fri. PM and 26 Sat. PM. Snow starts Sunday evening and we get 1-2″ Sunday night in G.R. with steady light snow from Lake effect thru Tues. night. The model prints out 0.23″ total and at a 20-1 ratio that would be 4-5″ of snow…plus drifting. The coldest 850 mb temps. are -22C Monday night and -21C Thursday morning. The GFS MOS has highs of 28 Fri. and 25 on Sat. The NAM MOS has 23 Friday and 21 Sat. The Ruropean has a low temperature of +4F Weds. AM in G.R. and a 2 PM temp. of just 16 Weds. PM. The European prints out 0.30″ precip. for G.R. from Sun. night thru Weds. AM and at a 20-1 ratio, that’s 6″ of snow…plus the drifting. The ski resorts can start making snow late this PM and make it non-stop until they’ve got powder bases in multiple feet around the whole resort. Houghton Lake had 5″ of snow on the ground yesterday evening, but I’ll bet half of that melted overnight. In the U.P. Grand Marais and Big Bay have 10″ on the ground with 5″ at Sault Ste. Marie.
Here’s the CFS model thru mid January. If you don’t like cold and snow, this looks like the year to plan that South Florida vacation. We miss the snowstorm to the south that will lay down decent snow cover from E. Oklahoma to New York State. Duluth quit snowing at midnight after 67 consecutive hours of snowfall. Duluth has 20″ on the ground. Douglas Pass CO had 30″ of snow in 24 hours. Huge storm in N. Europe. Gusts to 100 mph on mountaintops in Scotland, gusts to 80 mph possible along Danish Coast. Gas is as low as $2.88 in Cedar Springs.