Storm Summary Number 3 for West Coast Atmospheric River and Wind
Event
NWS Weather Prediction Center College Park MD
700 AM PST Thu Nov 21 2024

...Heavy rainfall, high winds, and mountain snows associated with
a major atmospheric river continue... 

Flood Watches are in effect over northern California.

Winter Storm Warnings, Advisories, and Avalanche Warnings are in
effect for the California and Washington Cascades and Sierra
Nevada.

High Wind Warnings and Watches are active across portions of
northern California and Oregon.

A Gale Warning is active for the offshore waters of Oregon and
Washington.

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

At 600 AM PST...An occluded 979 mb surface low was analyzed
offshore British Columbia. Radar and surface observations show
widespread moderate to heavy rainfall, mountain snows, and gusty
winds streaming inland across Northern California and southern
Oregon.

...Selected preliminary Storm Total Snowfall in inches from 600 AM
PST Tue Nov 19 through 600 AM PST Wed Nov 20...

...CALIFORNIA...
WEAVERVILLE 10 NE                    13.0                    
LASSEN NATIONAL PARK 3 SE            10.8                    

...OREGON...
SISKIYOU SUMMIT 2 WNW                 7.0                    

...WASHINGTON...
MAZAMA 2 S                           16.2                    
SOUTH CLE ELUM 25 SW                 14.0                    

...Selected preliminary Storm Total Rainfall in inches from 600 AM
PST Tue Nov 19 through 600 AM PST Wed Nov 20...

...CALIFORNIA...
VENADO                              12.68                    
AUSTIN CREEK                         8.72                    
FORESTVILLIE 1.4 SW                  8.13                    
SANTA ROSA 3.1 W                     7.35                    
POINT AREA 4.8 ESE                   5.21                    
HONEYDEW 3.2 SSE                     5.05                    
COOKSIE MOUNTAIN                     4.88                    
FORT DICK .2 SSW                     3.01                    
EEL RIVER CAMP                       2.47                    

...OREGON...
BROOKINGS 4.2 ENE                    3.27                    
CEDAR                                3.24                    
O'BRIEN 2 SW                         3.24                    
SOUTH FORK                           2.71                    
CANNIBAL MOUNTAIN                    2.28                    

...Selected preliminary Peak Wind gusts in miles per hour earlier
in the event...

...CALIFORNIA...
MATTOLE ROAD                           98                    
ACORN WOMAN PEAK                       89                    
VAN BREMMER                            82                    
INDIAN WELL                            80                    
GAZELLE                                79                    
WEST WEED                              74                    
BOLMUS                                 70                    
EAST LAKE SHASTINA                     68                    
WEED AIRPORT                           67                    

...NEVADA...
NEW WASHOE CITY  3 SW                  76                    

...OREGON...
ACORN WOMAN PEAK                       89                    
LONG PRAIRIE                           82                    
FLYNN PRAIRIE                          80                    
YAQUINA                                73                    
FLORENCE                               67                    
CROWN POINT                            63                    
SUGARLOAF                              61                    

...WASHINGTON...
MOUNT RAINEER                          77                    
CRYSTAL MOUNTAIN                       74                    
W CAPE ELIZABETH                       72                    
KOSMOS                                 71                    
CAMANO ISLAND                          63                    
SEATAC AIRPORT                         59                    
SEATTLE                                35                    


Highly impactful rainfall will continue across Northern California
and the Pacific Northwest, with 12-16 inches of rainfall expected
over Northern California and far southwest Oregon through Friday.
Heavy, wet mountain snow and wind gusts exceeding 65 mph will also
maintain whiteout conditions at pass level today, before snow
levels rapidly rise. In coastal areas, gusty winds may lead to
additional downed trees and power outages.

The next Storm Summary will be issued by the Weather Prediction
Center at 700 PM PST. Please refer to your local National Weather
Service office for additional information on this event.

Ziegenfelder