…Long duration lake-effect snow event continues downwind of the Great
Lakes…
…Periods of locally heavy coastal rains and higher elevation snow
continue for much of the northwestern U.S….
…Arctic air surges south from the Northern Plains through the Central
and Eastern U.S….
Strong northwesterly winds on the backside of a departing low pressure
system that is moving into the Canadian maritime will generate moderate to
heavy lake enhanced snow downwind of the Great Lakes over the next few
days. Anywhere between 6-12 inches of snow with isolated higher amounts
may accumulate downwind of the Lakes by Saturday morning. A low pressure
system tracking across the Central U.S. will produce a light swath of
snowfall from Iowa across the Ohio Valley today and into the Central
Appalachians on Friday. Snowfall accumulations of 6-12 inches are possible
over the Central Appalachians.
A series of low pressure systems will generate rain and high elevation
snow across much of the Northwest over the next couple of days. The
moisture plume associated with the first system will be directed at the
northern California coast and Oregon today, where an isolated threat of
Flash Flooding exists. Snow showers continue over the Northern/Central
Rockies. Rain and snow showers expand in coverage across the Northwest on
Friday. Accumulating snow is possible over the highest elevations of the
Cascades, Sierra and Northern Rockies. Heavy rainfall expands into the
upslope areas of the Sierra as the cold front pushes through.
High pressure builds over the Great Plains, sending frigid arctic air down
through the Central and Eastern U.S. through the weekend. Meanwhile, the
West and Southern Plains will experience above average temperatures. There
also continues to be an elevated fire weather threat over parts of
southern California today.
Kebede
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php