Probabilistic Heavy Snow and Icing Discussion
NWS Weather Prediction Center College Park MD
444 PM EDT Wed Mar 25 2020

Valid 00Z Thu Mar 26 2020 - 00Z Sun Mar 29 2020


...California to the Central Plains...
A stalled low-to-mid level front extending from the central
Rockies back into central California will continue to provide a
focus for periods of organized heavy precipitation, including high
elevation snow into Wednesday.  Areas impacted are expected to
include portions of the southern Sierra, the west-central Nevada
and far east-central Utah mountains, as well as the northern
Wasatch and Uintas.  For the Day 1 period (ending 00Z Friday), WPC
PWPF continues to show high probabilities for accumulations of
8-inches across the higher terrain. 

As the associated upper trough begins to pivot east, this band is
expected to shift farther southeast on Friday.  Meanwhile, surface
low pressure developing east of the Rockies will support snows
developing along the Front Range and the southeastern Wyoming
ranges on Friday, with marginal boundary layer temperatures
keeping accumulations in check over the High Plains.

...Pacific Northwest...
Mountain snows are expected to return to the Pacific Northwest and
northern California, with potentially heavy amounts over the
Olympics and northern Cascades, as a shortwave trough approaches
the coast on Saturday.

For Days 1-3, the probability of significant icing (0.25-inch or
greater) is less than 10 percent.

Pereira