An unusually extended Pacific jet stream could bring larger swings between cool and warm weather to California in the coming ...

A weather pattern named for the Greek letter omega is guiding US weather, forecasters said. The pattern is expected to ...

Michigan is forecast to see a string of warm and dry days to start June, thanks to a weather pattern known as the omega block ...

There is still quite a wide range in specific outcomes among model ensembles--including for the near-term low pressure ...

The world's weather is in a strange pattern right now - and it's affecting California. A massive area of high pressure parked over Western Europe, responsible for breaking century-old records and ...

Omega Block pattern traps heat in the Plains and South this week while storms bring severe weather to the Central U.S. and rain to both coasts.

While it's been cool and wet in the Miami Valley, there's a much different set up out west. A stubborn jet stream pattern has made its mark on the entire country recently. While we find ourselves in a ...

In order to break down the severe weather across the Midwest, we have to talk about the atmospheric conditions that were in place across the Lower 48 for much of March. For pretty much the whole month ...

Lately, the jet stream isn’t playing by the rules. Scientists say that big river of air high above Earth that dictates much of the weather for the Northern Hemisphere has been unusually erratic the ...

Add Yahoo as a preferred source to see more of our stories on Google. Scattered showers are expected Wednesday in Napa County, amid an unusual global weather pattern. (Brant Ward/The Chronicle) The ...