A long-anticipated and dramatic global climate shift has arrived, federal forecasters said June 11 as they confirmed the start of El Niño conditions.

El Nino, Nature's chaotic climate agent, has formed in a warmed-up Pacific Ocean and is expected to grow to historic strength, meteorologists announced Thursday.

When it comes, El Nino will exacerbate weather events globally ranging from record-high temperatures, and floods to prolonged droughts.

Here's a look at the weather forecast Thursday afternoon. Trump's fury over Epstein book fuels massive leak hunt GOP chances of losing the Senate as two seats become toss-ups Ukraine has taught the world how to kill again Russia's military hackers targeted home routers across 23 states.

Humidity is soaring, temperatures are climbing, and a powerful high-pressure system is keeping the Southeast hot and dry—while millions in the Midwest and Great Lakes brace for severe thunderstorms an...

Strong to severe storms remain possible south of Highway 10, but flooding is a concern as far north as around Highway 29.

Disruptive winds slammed parts of the Midwest as millions of Americans brace for more severe weather. CBS News' Rob Marciano reports from Stickney, Illinois.