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Subj: NWS USA WX Forecast - Jan 14
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Sent: 200114/1125Z 38396@KF5JRV.#NWAR.AR.USA.NA BPQK6.0.18
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
231 AM EST Tue Jan 14 2020
Valid 12Z Tue Jan 14 2020 - 12Z Thu Jan 16 2020
...Heavy snow to impact much of the Northwest...
...There is a slight risk of excessive rainfall over parts of
Mississippi...
...There will be a mixture of snow and rain/freezing rain over parts of
the Upper Midwest to the Northeast...
...Unseasonably mild temperatures to persist across the Eastern U.S. with
bitterly cold temperatures across portions of the Northwest and the
Northern High Plains...
The Northwest will have an active stretch of weather as a pair of storm
moving onshore from the Pacific Ocean and track through the region. The
fetch of Pacific moisture advancing inland coupled with the presence of
Arctic air filtering south from Southwest Canada will set the stage for
significant winter weather impacts. Areas of heavy snow can be expected
for the interior of Washington, Oregon, the Northern Great Basin, and the
Central and Northern Rockies going through Thursday. Winter Storm
Warnings and Winter Weather advisories are in effect across the Pacific
Northwest and the Intermountain West as a result. Some accumulating snow
will even be possible for the Seattle and Portland metropolitan areas, and
with the cold air in place area wide, expect treacherous and icy travel
conditions.
Meanwhile, a quasi-stationary front situated from the Southern
Mid-Atlantic Coast southwestward down across parts of the Tennessee Valley
and Lower Mississippi Valley is forecast to move very little over the next
couple of days. The front will be the focus for numerous clusters of
showers and thunderstorms which will be capable of producing heavy
rainfall and some concerns for flash flooding. In fact, the Weather
Prediction Center has highlighted portions of the Mississippi in a Slight
Risk of excessive rainfall. Some isolated potential for thunderstorms to
become severe also exists along the front from the Lower Mississippi
Valley and Southeast.
Furthermore, multiple areas of low pressure will track across the Upper
Midwest to the Northeast through Thursday. Areas of light snow will
develop over the region with an area of rain/freezing rain south,
likewise, from the Midwest into the Northeast
Unseasonably mild temperatures will continue across the South Plain to the
Ohio Valley and Southern Mid-Atlantic. Record warm daily high and low
temperatures will be possible in parts of the South Plains through the
Southeast. Temperature anomalies on average will range between 15 to 20
degrees above average across much of the Mid-Atlantic, Southeast,
Appalachians and Tennessee Valley. The counter to this very mild weather,
will be some bitterly cold weather across much of Montana, and the Dakotas
where temperatures will be falling well below zero, and with high
temperatures of 30 to 35 degrees below average.
Ziegenfelder
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
NOAA/ National Weather Service
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College Park, Maryland 20740
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73, Scott KF5JRV
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