01/26/2021, 11:43 am EST

Checking Medium-range Temperature Forecast skill Scores of All Models

Not surprisingly the GFS Operational model finishes last in skill scores for forecast 2-meter temperatures in the 6-10 and 11-15 day period across North America. The European Ensemble edges out the American Ensemble for best scores. data provided by CWG/Storm Vista WX Models.
01/24/2021, 12:27 pm EST

Madden Julian Oscillation To Intensify

For the first time since November the Madden Julian oscillation is activated and intensifying in the equatorial Pacific Ocean into early February. The result is increased risk of excessive precipitation in the East-central U.S. and a mild climate pattern east of the Continental Divide as the final month of meteorological winter arrives.
01/17/2021, 9:47 am EST

Northern Hemisphere Pattern Change Catalyst for Late January is an Evolving -PNA and +SCAND Pattern

Beginning midweek the northern hemisphere jet stream will trough on the U.S. West Coast and re-strengthen in western Europe. In-between the two vigorous trough patterns a third trough resides south of Greenland. By late January the pattern still remains although with slightly less amplitude. These features shape the last third of January 2021 climate for the northern hemisphere.
01/12/2021, 9:59 am EST

Cause of the China Cold Outbreak Late DEC/early JAN 2020-21

A December 2020 stratospheric warming event across Northeast Asia spawned a frigid polar vortex stretching from Mongolia to Northeast Asia. Beneath the polar vortex increasingly cold air was generated taking on arctic intensity. In late DEC/early JAN the cold air mass was ejected southeastward into China bringing historic snows and cold.