November 2025 - Page 5 of 11 - Climate Impact Company

News

11/19/2025, 4:48 am EST

A graph of the global warming AI-generated content may be incorrect.

11/19/2025, 4:48 am EST

Climbing Heating Degree Days in U.S. as December Arrives

Stratospheric warming is developing on the North America side of the North Pole now, strengthening in the 6-10-day period, and peaking across northwest continent during the 11-15-day period. The attendant colder temperature trend at ground level causes a surge in U.S. gas population weight HDD for the week ending December 4th.

11/19/2025, 4:41 am EST

A map of different colors AI-generated content may be incorrect.

11/19/2025, 4:41 am EST

Stormy and Cold Europe!

According to GFS, a semi-permanent upper-level longwave low-pressure trough anchors over Europe during the remainder of November causing a chilly pattern to develop also featuring heavy precipitation. At night, widespread 20’s (F) cover Europe into early December with teens (F) across Scandinavia and Northwest Russia. <32F reaches the British Isles.

11/18/2025, 12:44 pm EST

A map of the earth with weather forecasts AI-generated content may be incorrect.

11/18/2025, 12:44 pm EST

12Z GFS Shifts Stratospheric Warming to Northern Canada, Causes Cold 11-15-day Forecast for U.S.

At day-16, the 12Z GFS shifts stratospheric warming from northwest continent indicated by all models during previous model runs, to Northern Canada. In this position, the model creates cold air quickly thrusted into the U.S. in the 11-15-day period), a dramatic cooler change.

11/17/2025, 11:36 am EST

A graph of different colored lines AI-generated content may be incorrect.

11/17/2025, 11:36 am EST

La Nina Gaining Strength

La Nina suddenly displays life with notable strengthening during the past 1-2 weeks. All Nino SSTA regions are within the La Nina threshold. The catalyst to the cooler change is a consistent and strengthening positive phase of the southern oscillation index (+SOI) causing a steady increase in up-welling trade winds and shifting the global climate convincingly into a cold ENSO regime.