…Dangerously cold temperatures and wind chill values will linger for
much of the South and eastern U.S….
…Dangerously cold temperatures and wind chill values will linger for
much of the South and eastern U.S….
…Rare winter storm to bring heavy snow, sleet, and freezing rain to the
Gulf Coast and Southeast, with widespread travel impacts expected…
…Moderate to heavy lake-effect snow downwind from the Great Lakes…
…There is an Extreme Risk of fire weather over parts of Southern
California…
Bitterly cold high pressure extending from the Ohio Valley to the Southern
Plains brings temperatures 25 to 30 degrees below average from parts of
the Mid-Atlantic to the Central Gulf Coast. The Arctic Air Mass will
create widespread sub-freezing overnight lows along the Gulf Coast and
throughout the Southeast. The cold weather will exacerbate power outages.
The Arctic Air encompassing the eastern two-thirds of the United States
will persist with only a slow return to normal temperatures later in the
week. Multiple record low temperatures are possible through mid-week,
especially across the Gulf Coast and portions of the Southeast. The record
low temperatures will also include record cold afternoon high
temperatures. In addition, 30 to 50 degrees below zero wind chills develop
across portions of the Dakotas and the Upper Midwest. The 30 to 50 degrees
below zero wind chills pose an extreme risk of hypothermia and frostbite
to exposed skin. The sub-zero wind chills will continue from the Central
Plains eastward across the Ohio Valley, including the northern
Mid-Atlantic, and Northeast through Wednesday night.
Moreover, along with the cold air, a significant winter storm continues to
unfold with rapidly deteriorating travel conditions across portions of the
Gulf Coast. Impactful winter weather, including heavy snow, sleet, and
freezing rain, will continue to spread eastward from parts of the Florida
panhandle through the eastern Carolinas. On Tuesday evening, the snowfall
will be tapering off from eastern Texas through the western Florida
Panhandle. Major highway and air traffic disruptions, including possible
road closures and flight cancellations, may continue for several days even
after the snowfall ends. Significant impacts on travel are expected, with
localized power outages and tree damage likely in areas with the heaviest
icing. From Tuesday evening into Wednesday, 0.10 inches of freezing rain
will develop across northeastern Florida and southeastern Georgia.
Meanwhile, on Wednesday, a clipper system will move across the Upper Great
Lakes into Eastern Canada by Thursday. The cold air and upper-level energy
will produce lake-effect snow downwind from the Great Lakes. As the front
passes, lake-effect snow will become more moderate to heavy lake-enhanced
snow through Thursday.
Furthermore, intense high pressure over parts of the Northern
Intermountain Region and Great Basin will set up Santa Ana winds over
Southern California. Therefore, the SPC has issued an Extreme Risk of fire
weather over parts of Southern California. Winds of 20 to 40 mph, with
stronger winds in the terrain, low relative humidity, and dry fuels have
contributed to the dangerous conditions.
Ziegenfelder
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
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