The NOAA outlook covers the months of December, January and February, when the average high temperatures in Portland are 37 degrees, 31 degrees and 35 degrees, respectively. "The last cold winter that the country saw was back in 2013-14, and I'd expect MI to probably follow that pattern".
"We expect El Nino to be in place in late fall to early winter", said Mike Halpert, deputy director of NOAA's Climate Prediction Center, in a statement. In the U.S. Winter Outlook for December through February, above-average temperatures are most likely across the northern and western U.S., Alaska and Hawaii. Meteorologists predict there's a 75 percent chance it'll be around this winter.
What will determine just how wet the Carolinas' winter could be is El Niño, "an ocean-atmosphere climate interaction that is linked to periodic warming in sea surface temperatures in the central and eastern equatorial Pacific".
"Up in ME the forecast is actually what we call "equal chances", which means there's no tilt in those odds, so it's just as likely to be a wetter-than-normal winter as a drier-than-normal winter", says Halpert.
Winter weather expert Judah Cohen, of the private company Atmospheric and Environmental Research, uses different indicators to predict winter for the National Science Foundation.
It also said that wetter-than-average conditions are likely across the southern part of the USA, and up into the Mid-Atlantic.
2018-19 Winter Outlook map for precipitation
The Southeast, Ohio Valley and mid-Atlantic can go any which way on temperature, Halpert said.
"No part of the U.S.is favored to have below-average temperatures", Halpert said.
"NOAA" s Winter 2018 temperature outlook for the United States.
Precipitation is expected to be above normal across the southern tier of the USA, extending up into the Mid-Atlantic. The chances are highest in southeastern Georgia and much of northern and Central Florida. Portions of the Northern Rockies and the Northern Plains are also likely to experience drier-than-average conditions.
But they are expected to get better in Arizona and New Mexico, southern parts of Utah and Colorado, the coastal Pacific Northwest and the Central Plains, NOAA said.
-This outlook does not project seasonal snowfall accumulations. "We stand by our forecast and formula, which accurately predicted the many storms last winter, as well as this summer's steamy, hot conditions", editor Peter Geiger wrote. Even during a warmer-than-average winter, periods of cold temperatures and snowfall are still likely to occur.More news: Russian Woman Accused of Trying to Sway Midterms