Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
307 PM EST Tue Jan 04 2022

Valid 00Z Wed Jan 05 2022 - 00Z Fri Jan 07 2022

...More heavy mountain snow and coastal heavy rain in store from the
Pacific Northwest spreading into the northern/central Rockies...

...A deepening low pressure system will bring a quick round of snow and
strong winds across the northern Plains followed by enhanced snowfall over
the Great Lakes next couple of days...

...Cold air pours down into Great Plains through mid-week; critical fire
weather risk for parts of Southern Plains into tonight...

...Another winter storm possible from the Tennessee Valley and areas
farther northeast on Thursday...

An active weather pattern will continue to direct moisture from the
Pacific toward the northwestern portion of the country for the next couple
of days as arctic air from western Canada will attempt to filter into the
Pacific Northwest.  This pattern will continue to promote heavy mountain
snow for the Cascades while milder air from the Pacific will bring
moderate to heavy rain closer to the coast behind a warm front.  In the
mean time, the arctic air will spill into the northern Plains against the
northern Rockies.  This will result in snow overspreading the northern to
central Rockies through tonight before spreading farther east into the
northern-central Plains on Wednesday.

At the same time, a low pressure system currently intensifying over the
northern Plains will bring a quick round of snow and strong winds from the
northern Plains to the upper Midwest through Wednesday morning followed by
some lake-enhanced snowfall across the Great Lakes Wednesday into
Thursday.  The arctic air will then surge farther south toward the
southern Plains the next couple of days behind the intensifying low which
will track eastward across southeastern Canada.  Frigid air with sub-zero
daytime temperatures will engulf the northern Plains for the next couple
of days while much below normal temperatures spread farther south into the
Plains.

By Thursday, a wave of low pressure is forecast to develop along the
arctic front over the Deep South,  The low pressure wave is forecast to
develop further as it tracks toward the northeast.  This will bring an
increasing threat of a winter storm from the Tennessee Valley and areas
farther northeast on Thursday.

Elsewhere, dry conditions caused by downsloping and strong winds generated
by a lee trough and mid-level jet will contribute to critical fire weather
risk through early Wednesday for parts of eastern New Mexico and the Texas
panhandle.

Kong


Graphics are available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php