Tens of millions of people are in the path of a major winter storm. Federal cuts threaten efforts to understand the causes of such weather.

As the Arctic rapidly warms, the temperature difference between the polar region and lower latitudes decreases, which weakens the jet stream.

Winter Storm Fern is a stark reminder that the Trump administration's attempted cuts to weather related research impacts the creation of accurate weather forecasts

First, instead of moving storms quickly eastward, the sluggish jet stream stalled storm systems in place, causing prolonged downpours and flash flooding. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Dartmouth researchers used machine learning and long-term climate records to construct a timeline of jet-stream variability since 1901. Nearly all prior studies of the jet stream focus on the period since 1979, when data on weather and climate systems ...

The science behind the storm is an active area of study. Most of the US is bracing for a prolonged stretch of frigid weather and a massive winter storm that could wreak havoc on roads and power grids over the next several days.