LAS VEGAS (KLAS) -- The likelihood of La Niña developing this fall is increasing and that could bring challenges for the Las Vegas valley.

The Climate Prediction Center said there is now a 71% chance La Niña will form between October and December. That is when the Pacific Ocean’s equatorial waters cool enough to shift global weather patterns, often sending wetter weather to the Pacific Northwest and Ohio Valley, and keeping the southern U.S. drier and warmer.

By December through February, the odds drop to about 54%, meaning this year’s La Niña could be weak and short.

What La Niña means for the Las Vegas valley

La Niña moves the polar jet stream, which often means a wetter and cooler winter for the northern half of the country and a drier winter for the southern states, including the d

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