Sunday will likely be the most active day for severe storms this weekend, as the threat area stretches across much of the ...

Damaging straight line winds, large hail and a few tornadoes will all be threats," the National Weather Service said.

PORTLAND, Ore. (KATU) — Tomorrow’s severe thunderstorms could drop large hail over western Oregon and Washington. The Storm ...

One hundred years ago on this date, the Tri-State Tornado was the deadliest twister ever recorded. But was it the longest?

Tornadoes are among nature's fiercest furies. Despite the destruction they can cause, the mechanism that results in tornadoes isn't well understood.

Low pressure began moving out of northeast Oklahoma that morning, just as warm air was being pulled up from the Gulf Coast.

PORTLAND, Ore. (KATU) -- The Storm Prediction Center has issued a Severe Thunderstorm Watch for western Oregon and Washington ...

For instance, a CAPE value significantly above 1000 J/kg suggests a highly unstable atmosphere, making it conducive for storms to develop. Conversely, lower CAPE values might result in weaker storms ...