Updated Winter Forecast – Cool & Wet North, Warm & Dry South
NOAA’s Climate Prediction Center has updated their Winter Outlook with only some minor, cosmetic changes. Colder than average temperatures have been expanded in the Northern Plains, with drier than normal weather expanded through the Southwest. Above average temperatures and below normal precipitation are still expected across most of the southern tier of the nation. Wetter than normal weather is anticipated in the High Plains, Great Lakes, and Ohio Valley. The previous winter forecast was issued in the middle of October.
Ready for #winter? Here is our latest and final DJF 2017-18 forecast. There are some subtle changes from previous months, but still heavily influenced by #LaNiña. Learn more…https://t.co/dfWJFLTXzj pic.twitter.com/pnU82sVuPw
— NWSCPC (@NWSCPC) November 16, 2017
For the last few months, the Climate Prediction Center has been expecting La Nina conditions to develop in the Pacific Ocean. That was confirmed earlier this month.
La Nina (translated from Spanish as “little girl”) is a natural ocean-atmospheric phenomenon marked by cooler-than-average sea surface temperatures in the central Pacific Ocean near the equator, the opposite of El Nino (“little boy”).
Typical La Nina patterns during winter include above-average precipitation and colder-than-average temperatures along the northern tier of the U.S. and below-normal precipitation and drier conditions across the South.
For WeatherNation: Meteorologist Mace Michaels