Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
321 AM EST Mon Nov 29 2021

Valid 12Z Mon Nov 29 2021 - 12Z Wed Dec 01 2021

...Light to moderate rain showers to continue over portions of the Pacific
Northwest...

...Lake effect snow showers continue across Great Lakes region over the
next couple of days...

...Warmer temperatures ahead for much of the country; Elevated Fire
Weather Risk for southern California...

A quieter and warmer pattern is in store for much of the country as
upper-level energy remains either over Canada or stationary off the Baja
coast. A deepening low pressure system off the Northeast coast will cause
gusty winds across New England this afternoon through tonight. A weak
clipper system will bring yet another round of snow showers to the Great
Lakes region over the next two days. Snowfall totals will be less than the
previous system, but areas downwind of the Great Lakes may receive higher
amounts due to lake effect enhancement. A weak atmospheric river will
arrive over much of British Columbia, Canada and parts of the Pacific
Northwest on Tuesday. Rainfall amounts in the U.S. will be highest over
areas that border British Columbia such as the northern Cascades and
Olympic mountains due to orographic enhancement. Only a few inches of rain
are expected to accumulate by the time that the AR event ends on Tuesday
night.

Persistent upper-level ridging in the West longwave troughing in the East
and a cutoff low over Baja California will contribute to the spread of
warm air across the much of the CONUS over the next several days.
Temperatures are expected to be between 25-30 degrees above average over
much of the Northern/Central Plains today, while the east experiences a
cooldown in the wake of a deepening area of low pressure system and its
associated cold front moving into the North Atlantic. Temperatures will
moderate a bit on Tuesday before another substantial warm-up returns to
the Northern Plains on Wednesday and spreads east through the end of the
week. The Rockies will experience this warm spell too, which should be
disappointing to snow lovers, particularly in the Central Rockies area, as
much of the region continues to experience a dryer than normal snow
season. Elevated Fire Weather Risk is in effect for parts of southern
California through Tuesday due to marginally dry and windy conditions.

Kebede

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