Here comes the Polar Vortex
"Big Warm" before the "Big Chill" for the Metroplex
* November 20th, 2010 12:29 am CT
A look at the stark contrast in temperatures across the United States as the Polar front moves south
Photo: NOAA/NCEP Central Operations
Unusually mild late November temperatures in store for North Texas on Saturday-Monday:
A very mild weekend is on tap for Ft Worth, as warm southerly winds pump in milder and more humid air northward across Texas, ahead of the "big chill" building in Northern Canada.
Temperatures will be in the about ten to fifteen degrees above normal through Monday, with overnight lows near 60 degrees and afternoon highs ranging from 72 to 76 degrees.
Delightful late November sun ahead of the next approaching storm system will make Saturday spectacular as temperatures rise into the lower 70's with a mild south breeze of about 15 MPH. An awesome day for almost any outdoor activity, whether catching Thanksgiving sales at area malls or just taking in a leisurely day at park.
As the next upper level impulse approaches from the southwest, skies will cloud up on Saturday night, with areas of fog and drizzle possible. Under mostly cloudy skies on Sunday temperatures will climb to near 73 degrees with a stiff south wind of 10 to 20 MPH, with higher gusts.
Sunday night into Monday will continue cloudy and mild, with a chance of scattered showers on Monday afternoon, with temperatures near 76 degrees. Breezy conditions are expected to continue, with south southwest winds of 10 to 15 MPH, with gusts over 20 MPH during the afternoon hours.
"Big Chill" for Thanksgiving Day into early Friday still on tap for North Texas
Latest computer models from the GFS, ECMWF and the UKMET all are in agreement, as they have been for about the last ten days, a significant portion of a bitterly cold Arctic air mass will invade many portions of the continental United States Thanksgiving Day.
The Metroplex will be very fortunate as the majority of the bitterly cold air mass will invade the the Midwest and the Northeastern regions of the country, as Texas receives a "glancing shot" of Arctic air.
Nonetheless, Dallas-Ft Worth temperatures are expected to only range between 32 to 45 degrees on Thursday under a biting north wind and partly to mostly cloudy skies. Friday morning lows under clear skies and light winds will dip to near 24 to 27 degrees.
In stark contrast to the warm weekend and early workweek temperatures, Thanksgiving Day will average about 15 to 20 degrees below normal.
Questions or concerns? Please feel free to reach me via e-mail anytime and I will reply promptly. My e-mail address is robertbordonaro1961@hotmail.com.
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