Since late last week, meteorologists have monitored the computer models forecast track of a developing center of low pressure. At one point, the track and intensity would have placed a good hunk of Minnesota in a heavy snow band.
The most recent GFS model is still generating a decent storm system but pushing the track of the low further to our west. This would put much of the state into the warm sector (to the right of the low pressure track). Thus not only would there be less snow, but the potential for some freezing rain and perhaps just rain in southeast Minnesota later in the week.
A tally of monthly snowfall amounts shows a range of only about ten inches in northwest Minnesota, to as high as forty-one inches at Rochester. The measurements of snow, taken at the Twin Cities International airport have totalled 33.4 inches for December. That is a new record for December for Minneapolis/St. Paul, beating the old record of 33.2 inches set in 1969.(5 Comments)
Posted at 12:20 PM on December 27, 2010
by Craig Edwards
Water Vapor imagery of storm off the Northeast Coast at noon. Heavy snow has pushed north of New York City and mostly north of Boston. Strong winds continue to blow and drift the snowfall that exceeded two feet in some locations.
Posted at 4:00 PM on December 27, 2010
by Craig Edwards
Filed under: Winter storms
This dump of moisture is from what is likely to be Storm One.
To the southeast of this region there will be a band of sleet and freezing rain in MInnesota. In far southeast Minnesota the precipitation is likely to change to a cold rain.
Again from the GFS model that paints the first low in western Minnesota on Thursday (see previous blog -Taste of a Thaw), here is a graphical forecast of a secondary low which may form as the colder air pentetrates the state on Friday.
The forecast Image is of the surface pressure pattern and temperatures valid 6PM CST New Year's Eve. The track of the center of low pressure would favor a period of moderate to heavy snow over the state on Friday and into New Year's Eve.
This two-in-one storm system is a work in progress. I'll keep looking for weather clues to solve this puzzle being constructed by Mother Nature. The evolution of of two distinct low pressure centers is not that rare. The second storm will feed off both the remaining mild air in Illinois and the instrusion of much colder air through the Dakotas.