Probabilistic Heavy Snow and Icing Discussion
NWS Weather Prediction Center College Park MD
306 PM EDT Sat May 06 2023
Valid 00Z Sun May 07 2023 - 00Z Wed May 10 2023
...Northern California to the Northern Rockies....
A series of shortwaves moving through a broad upper trough will
continue to support periods of organized precipitation, including
high elevation snow from the Klamath Mountains and the Shasta
Cascade region to the northern Rockies into midweek. For much of
the Intermountain West and the northern Rockies, snow levels are
expected to remain above 5000 ft across much of the region through
most of the period, limiting the threat for widespread heavy snow
accumulations. For the Klamath Mountains, Shasta and the southern
Oregon Cascade region, an upper low dropping southeast across the
northeastern Pacific may bring heavier snow to the high
elevations. Snow levels are expected to briefly drop below 5000
ft as the system moves across the region on Monday.
The probability of ice accumulations greater than 0.25 inch is
less than 10 percent.