Storm Summary Number 5 for West Coast Atmospheric River and Wind
Event
NWS Weather Prediction Center College Park MD
100 PM PST Fri Nov 22 2024

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

A Gale Warning is active for the offshore waters of Washington,
Oregon, and California and a Storm Warning over Washington.

Flood Warnings, Advisories, and Watches are in effect for portions
of northern California and southwest Oregon.

High Wind Warnings are in effect across portions of northern
California and Oregon.

Winter Storm Warnings are in effect for parts of the California
Cascades and Sierra Nevada.

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

At 000 PM PST...A 984 mb surface low was analyzed offshore off the
Northwest U.S coast. A cold front is entering the coastlines of
Oregon and Washington and a warm front was lifting north across
the interior of northern Oregon and Washington State. National
Weather Service radar and surface observations show moderate rain
streaming across southern Oregon and northern California. Showers
were ongoing over the coastal sections of Washington State and
some heavier snow is ongoing across eastern Washington, Oregon,
and Idaho. Gusty conditions are ongoing as well with wind reports
this morning showing 25-35 mph. 

...Selected preliminary Storm Total Snowfall in inches from 600 AM
PST Tue Nov 19 through 000 PM PST Fri Nov 22...

...CALIFORNIA...
SODA SPRINGS 2 NE                    20.0                    
DONNER PEAK                          16.0                    
WEAVERVILLE 10 NE                    13.0                    
LASSEN NATIONAL PARK 3 SE            10.8                    

...IDAHO...
GALANE BLAINE                        20.0                    
KETCHUM BLAINE                       10.0                    
DEADWOOD RESERVO                      9.5                    

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

...WASHINGTON...
TWISP                                18.1                    
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 000 PM PST Fri Nov 22...

...CALIFORNIA...
VENADO                              17.40                    
AUSTIN CREEK                        15.88                    
COOKSIE MOUNTAIN                    14.03                    
SODA CREEK                          12.42                    
CAZADERO 6.9 WNW                    12.18                    
SANTA ROSA                          12.14                    
HONEYDEW 2 SSE                      11.95                    
BRANSCOMB 6.2 N                     11.82                    
EEL RIVER CAMP                      11.14                    
CALISTOGA 2.5 W                     11.12                    
MANCHESTER                          10.76                    
MOUNT SHASTA                        10.62                    
YOUNTVILLE 3.3 SW                   10.36                    
BROOKTRAILS                          9.56                    
KENTFIELD                            8.22                    
SIMS                                 8.21                    
FORESTVILLIE 1.4 SW                  8.13                    
WHISKEYTOWN                          7.21                    
REDDING 7.9 NNE                      6.57                    
ALDER SPRINGS                        5.98                    
STONYFORD                            5.72                    
POINT AREA 4.8 ESE                   5.21                    
DE SABLA                             4.68                    
SOMES BAR                            3.68                    
FORT DICK .2 SSW                     3.01                    

...OREGON...
ILLINOIS VALLEY AIRPORT              7.21                    
QUAIL PRAIRIE LOOKOUT                4.43                    
ILLINOIS VALLEY                      4.26                    
MERLIN                               3.79                    
BROOKINGS 4.2 ENE                    3.27                    
CEDAR                                3.24                    
O'BRIEN 2 SW                         3.24                    
SOUTH FORK                           2.71                    
JOSEPHINE                            2.42                    
CANNIBAL MOUNTAIN                    2.28                    
YREKA 1 WNW                          1.89                    

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

...CALIFORNIA...
MATTOLE ROAD                           98                    
VAN BREMMER                            82                    
INDIAN WELL                            80                    
GAZELLE                                79                    
WEST PROSPECT LOOKOUT                  74                    
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 RAINIER                          77                    
CRYSTAL MOUNTAIN                       74                    
W CAPE ELIZABETH                       72                    
KOSMOS                                 71                    
CAMANO ISLAND                          63                    
SEATAC AIRPORT                         59                    
SEATTLE                                35                    


The potential for heavy rainfall remains across portions of
northern California and far southwest Oregon through later today,
but the flooding threat should start to diminish from north to
south by tonight. An additional 2-4 inches of rain will be
possible through today, though the northern Sierra Nevada in
California could see as high as 10 inches of rain. Rock slides and
debris flows are still hazards to be watched for. In addition to
the heavy rainfall, another round of heavy mountain snow is likely
for the Washington Cascades and northern Rockies today into
Saturday, and the central Sierra Nevada tonight into Saturday.
Several additional inches of snow are likely, primarily in
elevations above 7500 feet. Strong winds capable of producing
downed trees and power lines will also continue across the Pacific
Northwest along coastal areas and mountains as a strong area of
low pressure passes parallel to the coastline. 

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.

Wilder