La Niña’s effects typically reach peak strength in winter, when it brings wet, cool weather to the Pacific Northwest and Ohio Valley. Meanwhile, the southern half of the U.S. tends to be warmer and drier. And while El Niño often suppresses snow across ...

If this La Niña event forms as expected, it’s likely to be a weak one, the CPC said on Thursday. “A weak La Niña would be less likely to result in conventional winter impact

A La Niña winter is still in the cards for the U.S., the Climate Prediction Center said in an updated forecast Thursday.