Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
400 AM EDT Mon Oct 31 2022

Valid 12Z Mon Oct 31 2022 - 12Z Wed Nov 02 2022

...Widespread rain and high elevation snow moving into the Pacific
Northwest followed by much of the Northern/Central Rockies through
mid-week...

...Unsettled weather will spread across the eastern U.S. through Tuesday...

...Cooler temperatures will arrive in the West by mid-week while the
northern Plains warms...

The focus of active weather over the next couple of days will shift into
the western U.S. as a rather potent cold front is forecast to move through
the region.  A steady stream of moisture ahead of a wave of low pressure
tracking along the front is already bringing moderate to locally heavy
precipitation into the Pacific Northwest--with rain at low elevations and
snow near the highest mountain peaks.  The cold front itself is forecast
to penetrate well inland, reaching into the northern Rockies and down
through the Great Basin by Wednesday morning.  The cold air behind the
front will lower snow levels as the precipitation expands east through the
Pacific Northwest today, and down into northern California and the Sierra
Nevada on Tuesday.  Gusty winds are also expected to overspread much of
the western U.S. with the passage of the front over the next couple of
days.

Meanwhile, a couple of weakening areas of low pressure and associated
fronts are currently spreading unsettled weather into the eastern U.S. 
Scattered showers and some embedded thunderstorms can be expected to move
across the Great Lakes, Ohio Valley and into the nearby Appalachians
today, moving into the Eastern Seaboard on Tuesday.  Severe weather is not
anticipated.  The entire system is expected to push offshore into the
Atlantic with the eastern U.S. drying out by Wednesday.  Farther south, a
separate low pressure system near the tail end of a front will also bring
scattered showers and thunderstorms to South Texas and up into the Rio
Grande Valley Monday and Tuesday.  Precipitation chances are forecast to
diminish in southern Texas on Wednesday.

A cold air mass will filter in behind the front through a large portion of
the western U.S. by Wednesday morning.  High temperatures in the 40s and
50s will be common, colder across the high elevations.  While the West
cools, southerly flow ahead of the potent cold front will bring a surge of
warm air northward through the Plains.  Temperatures will be above average
through mid-week for most of the central and northern U.S. with highs in
the 60s and 70s.

Kong


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