January 2026 - Page 8 of 13 - Climate Impact Company

News

01/15/2026, 12:25 pm EST

Regional Stratospheric Warming Episode Eastern North America Late January

At midday, the 12Z GFS indicates evolution of a significant REGIONAL STRATOSPHERIC WARMING EVENT across eastern North America occurring mid-to-late 11-15-day period. The warming is likely in response to a moderate to strong eastward shifting convection phase of the Madden Julian oscillation (MJO) across the equatorial Pacific.

01/15/2026, 9:04 am EST

Regional Stratospheric Warming Expands Westward to North America East Coast Late January; Causes East U.S. Chill

A frigid Russia air mass inspired in-part by regional stratospheric warming shifts westward into Europe during the medium range as the stratospheric warmth also shifts westward to the North Atlantic in 11-15 days. By late month, the stratospheric warming reaches eastern North America and should cause a cold ending of January/beginning of February for eastern North America.

01/14/2026, 12:42 pm EST

Strong -AO, Sneaky Cold and Snowy Surprises Possible

Is the heavy snowstorm indicated by 12Z GFS on the East Coast early next week correct. Of course not! However, the model makes the point that the climate pattern is in a strong negative arctic oscillation. Arctic air is forecast to drift cross-polar from Siberia and infiltrate North America. In this pattern, a snowstorm in the East is possible

01/14/2026, 5:06 am EST

Negative Arctic Oscillation Produces Cold-to-Frigid Weather Most of Mid-latitude Northern Hemisphere

The updated 15-day arctic oscillation (AO) forecast maintains a moderate to strong negative phase for the remainder of January eventually causing cold weather in each sector of the mid-latitude northern hemisphere. In Europe, short-term mild climate steadily fades into the deep freeze the last third of January.