Long Range Summary

Relatively mild temperatures in place across most of the U.S. this past weekend (despite widespread rainfall) are certain to plummet more than 15° degrees below average starting in the northwest quadrant of the country early this week. However, unlike most of November which was coldest for longest west of the Rockies, the opposite U.S. temperature […]


Forecast Summary

Cold weekend ahead in the Midwest but computer models are latching onto only brief near seasonal cooling in the South and East followed by fast return of above average warmth to predominate the rest of October and early November.


Winter-like cold air emanating from northern Canada…

Winter-like cold air emanating from northern Canada is on the move through the northern Rockies and northern Plains, while weakening substantially as it spreads into the summer-like warm and humid air-mass lingering in the South and East. longer range models are latching onto another strong and extended cooling event across the eastern half of the […]


November 28 - Long Range Summary

Relatively mild temperatures in place across most of the U.S. this past weekend (despite widespread rainfall) are certain to plummet more than 15° degrees below average starting in the northwest quadrant of the country early this week. However, unlike most of November which was coldest for longest west of the Rockies, the opposite U.S. temperature gradient is anticipated to predominate December. Arctic air is of high forecast confidence to focus east of the Rockies the longest in December, more directly into the Midwest and East starting during the 2nd week of the month. Before then temperature volatility driven by fast moving coast to coast tracking storms is likely to average somewhat cooler than models forecast, especially across the northeastern quadrant of the U.S. (seasonal) as progressively colder air in their wake outweighs brief warming peaking during their approach. All extended range models flood the majority of the Eastern U.S. with cold air of varying intensity during the 11-15 day period, but all recent forecasts are considered too mild. Strong and prolonged high latitude blocking directing frigid arctic air across snow covered Canada with very little modification (weakening) along the way sets the stage for the coldest mid-late December in several years across the Midwest and East.  


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