Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
400 AM EDT Wed Nov 02 2022

Valid 12Z Wed Nov 02 2022 - 12Z Fri Nov 04 2022

...Heavy snow today along the Cascades, Sierra Nevada, and portions of the
northern Rockies...

...Heavy mountain snow moving into the central Rockies possibly spreading
into the central/northern High Plains on Thursday into early Friday...

...Much colder across the western U.S. but very warm today across much of
the northern/central Plains...

An amplifying upper-level trough in conjunction with a potent cold front
will usher much colder air through the western U.S. while delivering a
round of heavy snow across the higher elevations during the next couple of
days.  This system will continue to lower snow levels over the Cascades
and along Sierra Nevada through today as colder air penetrates farther
inland along with strong and gusty winds.  By Thursday, the mountain snows
should shift east into the northern and central Rockies, with the high
elevations of the central Rockies mostly likely seeing heavy snow, which
will result in reduced visibility and hazardous driving conditions.

In addition to the mountain snows, the potent trough will bring a big cool
down through the western U.S. through the next couple of days.  In
contrast, warmer than average temperatures will persist across the eastern
two-thirds of the country under the influence of an expansive high
pressure system centered over the Northeast.  In fact, some record high
temperatures are forecast today at certain locations across the northern
Plains to the upper Midwest under a dry southerly flow.  The dry and
breezy conditions will also promote fire danger across the northern and
central High Plains today.  By later on Thursday into early Friday, much
colder air will surge into the northern Plains behind the potent cold
front.  Conditions will rapidly change from dry and warm today over the
central High Plains to cold and snowy by Thursday night into early Friday.
 Strong and gusty winds from the north will also add to the wintry feel
across the northern and central High Plains.

Meanwhile, the next moisture surge from the Pacific is forecast to reach
the Pacific Northwest later on Thursday with mountain snow and lower
elevation rain rapidly overspreading the area.  In contrast, mild and
pleasant autumn weather is forecast for the eastern U.S. under the
expansive high pressure system.

Kong

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