ROANOKE, Va. – We are now two months away from the official start of winter.
While long-range forecasting lacks the skill of day-to-day forecasting, experts at the National Oceanic and Atmospheric Administration have begun forecasting trends for the upcoming cold season.
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Your Local Weather Authority will issue its more hyperlocal winter forecast on Tuesday, November 16 at 6 p.m.
NOAA’S Winter Forecast 2021-2022
For the eastern portion United States, snow-lovers may be disappointed. NOAA’s forecast resembles drier weather in the Southeast with the most wet weather favoring areas that typically see snow feed off the Great Lakes.
That’s not to say we won’t see any snow, but the trend - according to NOAA - is for a warmer winter across much of the U.S. That’s especially the case across the Southeast. NOAA even noted that this is similar to what they forecasted last winter.
Forecast Ingredients
One of the key components to any seasonal forecast in this part of the world is the El Niño Southern Oscillation (a.k.a. ENSO). This refers to ocean waters off the coast of Perú, which oftentimes influence the storm track across the continental U.S.
There are three phases to ENSO - i) El Niño, ii) La Niña and iii) Neutral.
Here's what I'm expecting to hear from @NOAA later today when they issue their winter weather outlook. pic.twitter.com/1g5C4wuDUf
— Chris Michaels (@WSLS_Michaels) October 21, 2021
This winter, the ENSO is forecast to be in its La Niña phase. This is when the ocean waters in the equatorial Pacific are cooler than average. This most often leads to a less active jet stream in the Eastern U.S.
You typically see this lead to a more active Atlantic tropical season and a less active winter in the Eastern U.S.
Possible Local Tie
Your Local Weather Authority keeps tabs on these trends as well, more specifically for our area. Through our own research, we’ve found that 74% of La Niña winters yield below-average snowfall.
That’s not the only component to a winter forecast, however. There are other ingredients that range from climatological data to energy used in the tropics to snow cover up north.
We will continue to sift through all this data, and we will have our winter forecast out very soon!