Probabilistic Heavy Snow and Icing Discussion
NWS Weather Prediction Center College Park MD
420 PM EDT Thu Apr 01 2021

Valid 00Z Fri Apr 02 2021 - 00Z Mon Apr 05 2021


Days 1 and 2...
The probability of significant icing and/or snow is less than 10
percent.

Day 3...
An upper low and associated cold front will push into/through
Washington on Sunday. With limited moisture, but WSW flow,
generally light snow is expected for the Olympics and into the
northern Cascades. WPC preferred a middle ground among the
guidance between the slower GFS and quicker NAM for timing and a
consensus for amounts. Probabilities of at least 8 inches was
generally low (about 10-30 percent at the highest peaks).

The probability of significant icing is less than 10 percent.


Fracasso