The Weather Prediction Center

College Park, MD


Storm Summary Message



Storm Summary Number 1 for Western Winter Storm
NWS Weather Prediction Center College Park MD
700 PM PST Mon Feb 11 2019

...Snow is falling across the Pacific Northwest and the northern
Rockies as a cyclone invades from the Pacific ocean...

Winter Storm Watches are in effect for the Sierra Nevada of
eastern California.

Winter storm warnings and advisories extend across all of
Washington, northern and western Oregon, northern Idaho, northwest
Montana and northernmost California.

Flood watches are in effect for portions of central California and
northwest Oregon.

For a detailed graphical depiction of the latest watches, warnings
and advisories, please see www.weather.gov

At 600 PM PST...A surface low is centered near 47.8N 128.6W, or
180 miles west-southwest of Quillayute, Washington.  Its cold
front is about to make landfall along the coast of the Pacific
Northwest per the most recent surface analysis.  Ahead of the
system, National Weather Service Doppler Radar and surface
observations depict snow across much of Washington, northern
Oregon, northern Idaho, and westernmost Montana at this time,
heaviest in the vicinity of Puget Sound.

...Selected preliminary Storm Total Snowfall in inches from 1200
AM PST Mon Feb 11 through 600 PM PST Mon Feb 11...

...IDAHO...
BANNER SUMMIT                         2.5                    

...OREGON...
PENDLETON                             8.9                    
HOOD RIVER AT 455 FEET                7.5                    
DETROIT DAM                           5.0                    
TIMBERLINE                            4.0                    
CLATSKANIE                            3.0                    
MOUNT HOOD MEADOWS                    3.0                    
PARKDALE                              3.0                    
WILSON RIVER SUMMIT                   3.0                    

...WASHINGTON...
PORT ORCHARD                          9.0                    
GLENWOOD 1 NNW                        8.0                    
OLYMPIA 1 W                           8.0                    
PORT ANGELES                          6.5                    
SEATTLE-TACOMA AIRPORT                5.1                    
ARTONDALE                             5.0                    
DIXIE 4 ENE                           5.0                    
GIG HARBOR                            5.0                    
WALLA WALLA                           4.5                    
CAMAS AT 1400 FEET                    4.0                    
COLLEGE PLACE 4 E                     4.0                    
LONGVIEW AT 750 FEET                  4.0                    
STEVENSON AT 1000 FEET                3.5                    


As the system slides down the coast, heavy snowfall will follow
suit.  Between now and Thursday, 2-3 feet of new snowfall is
expected across the Cascades of Washington and Oregon as well as
the higher elevations of Idaho and northwest Wyoming and the
Shasta and Siskiyou ranges of northern Califonia.  The Sierra
Nevada of eastern California is expected to receive 3-5 feet of
new snowfall from this system.  Such significant snowfall carries
an avalanche risk and threatens to close major roadways and
interstate routes in the area once heavy snow begins to pile up. 
At lower elevations, western Oregon and California's coastal
ranges are expected to receive 2-5" of rainfall into Thursday
afternoon, which could lead to flooding.

The next storm summary will be issued by the Weather Prediction
Center at 100 AM PST. Please refer to your local National Weather
Service office for additional information on this event.

Roth




Last Updated: 931 PM EST MON FEB 11 2019