WeatherWeather Blog


La Niña could bring a warmer and wetter winter to southeast Wisconsin

 NOAA Climate Prediction Center
Posted at 11:29 AM, Oct 22, 2021
and last updated 2021-10-25 09:50:45-04

The National Oceanic and Atmospheric Administration Climate Prediction Center (NOAA) has released its Winter Outlook for 2021-2022, and it could be a wet and warm one.

 NOAA Climate Prediction Center

La Niña conditions are present in the equatorial Pacific Ocean.

For southeast Wisconsin, we have a higher chance of seeing slightly warmer than average temperatures and a higher chance for above average rainfall from December to February.

To put this into perspective, here's a look at at a graphic of the average temperatures in Milwaukee from December to February.

Here is a graphic showing the average rainfall and snowfall for Milwaukee from December to February.

During La Niña conditions, east-to-west Trade Winds are stronger, pushing warmer water west and upwelling cold water off the coast of South America.

The upwelling of colder water in the eastern Pacific Ocean pushes the jet stream farther north and changes its pattern across the continental United States. This pattern change usually keeps temperatures warmer in the southern states and colder in the northern Rockies and leads to wetter winters in the Great Lakes and Pacific Northwest.

Here's a look at what the Climate Prediction Center has issued for temperature and precipitation chances from December to February

NOAA Climate Prediction Center

Drought conditions are forecasted to improve in many locations across the Pacific Northwest but are forecasted to worsen through the Rockies and farther south.

NOAA Climate Prediction Center

Report a typo or error // Submit a news tip