The Weather Prediction Center

College Park, MD

Storm Summary Message

Storm Summary Number 05 for California Atmospheric River
NWS Weather Prediction Center College Park MD
700 PM PST Tue Feb 06 2024

...Strong atmospheric river producing life threatening heavy rain,
flash flooding, mountain snow, and high winds across California...

Flood Watches are in effect across much of Southern California and
now into western Arizona.

Winter Storm Warnings are in effect atop the California Sierra

For a detailed graphical depiction of the latest watches, warnings
and advisories, please see

At 600 PM PST...Radar and surface observations observed a cold
front traversing through interior portions of Southwest.
Intermittent clusters of moderate rain are pivoting around a broad
surface trough off the Pacific waters into inland Souhtern
California, and a more persistent batch of moderate rain is
located along a cold front entering Arizona. Gusty winds were also
ongoing across much of California and now moving westward into
Arizona in conjunction with the cold front passage.

...Selected preliminary Storm Total Snowfall in inches from 700 AM
PST Sun Feb 04 through 600 PM PST Mon Feb 06...

MAMMOTH MOUNTAIN                     33.0                    
JUNE MOUNTAIN                        31.0                    
ASPENDALL                            27.9                    
KIRKWOOD MEADOWS                     25.0                    
TRUCKEE                              21.0                    
TWIN BRIDGES                         14.0                    
PALISADES TAHOE SKI                  13.0                    
HOBERGS                              10.0                    

...Selected preliminary Storm Total Rainfall in inches from 700 AM
PST Sun Feb 04 through 600 PM PST Mon Feb 06...

BELL AIR HOTEL                      11.64                    
SEPULVEDA CANYON                    11.64                    
STUNT RANCH                         11.07                    
WOODLAND HILLS                      10.97                    
COGSWELL DAM                        10.63                    
MALIBU HILLS                         9.59                    
DEVORE                               8.79                    
EL DESEO RANCH                       8.62                    
LOS ANGELES/USC DOWNTOWN             8.51                    
MATILIJA CANYON                      8.26                    
MIDDLE FORK LYTLE CREEK              8.17                    
BEVERLY HILLS                        7.95                    
LONG BEACH                           7.35                    
THOUSAND OAKS 2.1 WSW                7.05                    
CAMP HI HILL                         6.81                    
SANTA MONICA                         6.63                    
PINYON PEAK                          6.46                    
SANTA CLARITA 3.1 WSW                6.25                    
PASADENA                             6.07                    
OLD MAN MOUNTAIN                     5.67                    
SANTA BARBARA FCD                    5.42                    
CHINO 4.2 SE                         5.40                    
RANCHO SAN JULIAN                    4.53                    
LAKE KITTIRIDGE                      3.16                    
SAN DIEGO                            2.01                    

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

LAGUNITAS FOREST                      102                    
PABLO POINT                           102                    
SANTA CLARA                            98                    
INVERNESS                              89                    
FALCON ROAD                            80                    
SAN FRANCISCO                          77                    
YOSEMITE PILOT PEAK                    74                    
PEBBLE BEACH                           68                    
SPRING VALLEY                          65                    
OAKLAND INTERNATIONAL                  60                    
SAN FRANCISCO INTERNATIONAL            58                    
SAGUS                                  50                    
SAN LUIS                               50                    
CATALINA AIRPORT                       49                    
MORMON ROCK                            46                    
OAKLAND NORTH                          46                    
SACRAMENTO AIRPORT                     46                    
MALIBU HILLS                           40                    
SANRA YNEZ                             37                    
WATSONVILLE                            35                    
PEPPERDINE                             33                    
SANTA BARBARA                          23                    

Batches of moderate rain will continue through Tuesday night for
much of Southern California.Local NWS offices in the area are
messaging up to an additional 0.75-1.5 inches of rainfall in
coastal areas, while mountainous areas may see up to 1-3". A
couple inches of more snowfall may be possible in higher
elevations across California and may bring whiteout conditions
above 5000 feet. Lighter rain showers may continue through
Wednesday, however, with a persistent moist onshore flow.The
threat for locally catastrophic flash and urban flooding impacts
will persist across Los Angeles for the next 12 hours.

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


Last Updated: 942 PM EST TUE FEB 06 2024