It's November and finally a real Canadian air mass is surging south. But it's still above freezing and 10 degrees above average in most of Minnesota.
It seems Canadian cold fronts are just not what they used to be so far this fall.
A lack of snow cover over much of Canada so far this month may be the reason why our first November cold front features temperatures that are still at or above seasonal averages.
Air masses absorb and retain the properties of the regions they are born in and move over. Think of snow cover as a big block of ice...if you pass your hand over the top you can feel the cooler air. No snow, no cool air. Our air mass coming south from western Canada has travelled over bare ground on the trip to Minnesota.
If you travel northwest from Minnesota the ground is snow free for at least 1,000 miles.
A milder westerly air flow returns this weekend, and the lack of snow in the Upper Midwest will allow temperatures to recover more quickly than they might in other years. Hunters will enjoy mild conditions in the field this weekend, but will not have the benefit of "tracking snow."
East Coast swamped:
Low pressure east of Washington D.C. is dumping heavy rainfall to much of the eastern USA today. The space shuttle launch was scrubbed by bad weather today in Florida. Heavy rain is delaying flights in the northeast.
Tropical trouble for Haiti:
The Atlantic Hurricane season is not done just yet.
Tropical Storm Thomas may become Hurricane Thomas in the next 24 hours as it rakes Haiti through Friday. The storm will likely dump 5 to 10" (with isolated 15" totals) of unwelcome rainfall to the mountainous nation, which is still reeling from earthquake damage.
Posted at 5:46 PM on November 4, 2010
by Paul Huttner
Filed under: Weekend
This weekend looks like a "perfect 10" for early November. It could also be the best weekend for the rest of the year. It may be a short Indian Summer this year...but at least we'll get a taste over the next few days.
After a frigid start Friday morning featuring the coldest temps so far this season in Minnesota, A ridge of high pressure will push milder air into Minnesota this weekend.
Both Saturday and Sunday look to feature plenty of sunshine and rapidly rebounding temperatures after cool mornings.
With plenty of (albeit weaker) November sun, temperatures will rebound nicely into the 50s this weekend and on Monday. Enough mild air will filter in by Sunday and Monday that some bank thermometers could flash 60 degrees both Sunday and Monday afternoon.
Average highs this weekend are around 45 degrees for the metro and southern Minnesota, and upper 30s to near 40 up north. Temperatures should run 10 to 15 degrees above average by Sunday.
Enjoy the coming warm spell; it looks like a strong northwest flow in the upper atmosphere will emerge later next week. This will likely bring a family of cold fronts surging south from Canada in the next 7 to 14 days.
Here's some advice form your friendly neighborhood weatherman. Take full advantage of the milder weather this weekend!