Storm Summary Number 1 for Coast to Coast Winter Storm
NWS Weather Prediction Center College Park MD
700 AM PST Thu Feb 13 2025

...Strong Pacific storm system now moving inland across California
with heavy rain and strong winds...

Flood advisories are in effect from the greater San Francisco area
to near Los Angeles.

Flood watches are in effect from north-central California to the
Mexico border.

Wind advisories are in effect for the Central Valley of
California, portions of southern California, and across most of
southern Nevada.

High Wind Warnings are in effect near the central California coast
and extending south to the Transverse Ranges of southern
California.

Winter Weather Advisories are in effect across portions of
southwestern Oregon, northern Nevada, and the Transverse Ranges of
southern California.

Winter Storm Warnings are in effect from northwestern California
to the southern Sierra.

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

At 600 AM PST...The latest surface analysis has a 982 mb occluded
surface low situated about 200 miles west of the Oregon Coast,
with a strong trailing cold front now reaching the northern
California coast. Regional Doppler Radar are indicating widespread
moderate to locally heavy rainfall across much of Central
California this morning, and this is now also increasing across
much of southern California as the main moisture plume associated
with the atmospheric river shifts more to the south. Showers still
remain across northern California and into southwestern Oregon.
Heavy snow is falling across the higher terrain of the Sierra.

...Selected preliminary Storm Total Rainfall in inches from 700 AM
PST Wed Feb 12 through 700 AM PST Thu Feb 13...

...CALIFORNIA...
VACAVILLE NUT TREE AIRPORT           2.13                    
WATSONVILLE                          2.07                    
HAYWARD                              1.70                    
SANTA ROSA                           1.66                    
SAN FRANCISCO AIRPORT                1.56                    
MONTEREY                             1.53                    
FAIRFIELD                            1.52                    
UKIAH                                1.40                    
NAPA                                 1.11                    
SAN JOSE AIRPORT                     1.05                    

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

...CALIFORNIA...
LOMA PRIETA                            70                    
SWEENEY RIDGE                          70                    
GUNSIGHT FIRE ROAD                     65                    
RICHARDSON EAST                        65                    
MINES TOWER                            64                    
SAN FRANCISCO AIRPORT                  62                    
SOUTH BLACK DIAMOND WAY                62                    
LONG RIDGE                             60                    
PACIFICA                               60                    
ROSE PEAK                              59                    
FRIIS CAMP                             56                    
MONTEREY AIRPORT                       56                    
FREMONT 5 E                            55                    
PLEASANTON 4 SW                        55                    
LAS TRAMPAS                            53                    
MOUNT ALISON                           52                    
FORD OBSERVATORY                       49                    
SANDBERG                               48                    


Recent GOES satellite imagery shows a potent atmospheric river
event moving inland across California today, and the moisture
associated with this will steadily move inland across the
Intermountain West through Friday.  Additional rainfall totals on
the order of 2 to 4 inches are expected across portions of
California, with some isolated 5+ inch totals possible through
Friday night. Several feet of snow is likely for the highest
elevations of the Sierra, and 1-2 feet expected for the highest
mountains ranges of the Intermountain West and eventually across
the central Rockies. Once this storm system emerges over the
central/southern Plains Saturday, very heavy rainfall and severe
thunderstorms are forecast to develop from the Deep South to the
Tennessee and Ohio River valleys with widespread 3-6+ inch
rainfall totals expected, mainly from eastern Arkansas to southern
Kentucky.

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.

Hamrick