All eyes will be during last days of 2020 and on New Year at extreme storm, bringing blizzard conditions to SE Canada, Great Lakes region, Northern Plains and Midwest and severe T-storms in Northeast, Mid-Atlantic and Southeast.
Regionally blizzard, but around Silvester midnight mainly severe storms along the eastern coast of the USA should cause many problems with celebrations of the New Year 2021 from Florida to Maine.
Silvester Midnight should be coldest in Upper Midwest, with local temperature anomalies under -30°F / 17°C and warmest in mentioned northern states of Northeast.
COVID-19 transition risk will be high along Eastern Coast, in Midwest and Northern Plains thanks to storms / cold weather, but too in Rockies and Southwest thanks to drought (COVID-19 is spreading mainly near cold and dry weather or weather directly on stormtrack in northern latitudes).
If you are planning to be outdoor during the night, stay safe.
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