Heat-driven drying is playing a larger role than low precipitation in 21st-century Western droughts.
Multi-year drought and heat waves across Mexico in 2024
July 22, 2024
As polar vortex season winds down, so does Season 1 of the Polar Vortex Blog. In our final post of the season, we discuss whether the season is ending on a cliffhanger or just tying up loose ends.
When we get to spring, the polar vortex's days are numbered. When will the "final stratospheric warming" occur this year?
How warm winters and low ice may impact the Great Lakes
March 18, 2024
The latest forecast says a major disruption of the polar vortex is on its way, but the stratosphere has been acting up for a while. Our bloggers explain what it might mean for U.S. weather.
Out of the 29 Northern Hemisphere summers that led up to a winter El Niño, how many were hot versus cold? Wet versus dry? These maps are a global climate scorecard for the influence of El Niño on June-August climate.
What are the odds? This post explains whether your corner of the U.S. is facing elevated odds of an unusually wet, dry, warm, or cool June.
The January 2023 climate outlook favors a wetter-than-average start to the new year for the western US, northern Plains, Great Lakes and Tennessee Valley, and a warmer-than-average month for the central and eastern United States.