Morning Overview on MSN

The jet stream steers your weather from about six miles up at highway-plus speeds

A river of fast air circles the planet near the top of the troposphere, bending north and south as it goes. Its changing ...
Climate Compass on MSN

Forecasters warn: This jet stream shift could bring unusual weather for months

Something has been off about the sky lately, and meteorologists are finally putting numbers to the feeling. Across the past ...