Storm Summary Number 2 for Heavy Rainfall and High Winds
Associated with Kay
NWS Weather Prediction Center College Park MD
800 AM PDT Sat Sep 10 2022

...Widely scattered bands of moderate showers and isolated
thunderstorms associated with Post-Tropical Cyclone Kay continue
to impact portions of southern California while spreading
northwest toward central California...

Flood Watches are in effect from much of southern California
northward into the Sierra Nevada, southern Nevada, and
northwestern Arizona.

Wind Advisory is in effect for Santa Ynez Valley.

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

At 700 AM PDT...the center of Post-Tropical Cyclone Kay was
located near 30.5N, 120.5W, or about 240 miles southwest of San
Diego, CA., moving toward the southwest at about 16 mph.  Doppler
radar indicated that the outer rainbands associated with
Post-Tropical Cyclone Kay continued to progress farther
northwestward into the south-central portion of California.  These
bands, which contained light to moderate rain, were found between
San Francisco and Los Angeles, with an embedded thunderstorm cell
near Fresno.  South of Los Angeles, another batch of rain was
organizing into bands as they were pivoting northward across the
Mexican border into southern California.  The heaviest rain was
found offshore to the southwest of Los Angeles just to the
northeast of the circulation center of Post-Tropical Cyclone Kay. 
Elsewhere, an outer rainband was moving into southwestern Arizona.
 Another batch of rain was moving northwest across central
Arizona.  Farther north, bands of moderate to locally heavy rain
and embedded thunderstorms were developing and moving westward
across the Grand Canyon toward the Las Vegas area.

...Selected preliminary Storm Total Rainfall in inches from 800 PM
PDT Thu Sep 08 through 700 AM PDT Sat Sep 10...

...CALIFORNIA...
MT LAGUNA                            5.08                    
RANCHITA RAWS                        4.61                    
VOLCAN MOUNTAIN                      4.47                    
JULIAN                               4.39                    
AGUA CALIENTE                        4.06                    
MOUNTAIN SPRINGS GRADE               3.98                    
SAN FELIPE                           2.64                    
LAKE CUYAMACA                        2.49                    
MOUNT SAN JACINTO                    2.22                    
YUCAIPA RIDGE                        2.05                    
SEELEY                               1.70                    
FISH CREEK MOUNTAINS                 1.68                    
BORREGO SPRINGS                      1.61                    
RAYWOOD FLATS                        1.50                    
INDIO                                1.26                    
WALNUT CREEK                         1.11                    
PINE COVE                            0.82                    
PALM SPRINGS                         0.73                    
SAN DIEGO INTL ARPT                  0.66                    

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

...CALIFORNIA...
CUYAMACA PEAK                         109                    
BIG BLACK MOUNTAIN                     96                    
LAGUNA LAUNCH                          91                    
OTAY MOUNTAIN                          81                    
MT LAGUNA OBSERVATORY                  80                    
TORO PEAK                              77                    
FREMONT CANYON                         74                    
PIGSAH PEAK                            60                    
HIGHLAND SPRINGS                       55                    
LAS FLORES                             52                    
IDYLLWILD                              51                    
SAN JACINTO                            50                    
LAGUNA BEACH                           49                    
BANNING                                46                    
AVALON/CATALINA AIRPORT                41                    
LAKE ARROWHEAD                         41                    
RAMONA ARPT                            41                    
HUNTINGTON BEACH                       39                    
LAX AIRPORT                            39                    
LONG BEACH AIRPORT                     39                    
ONTARIO AIRPORT                        39                    


Over the next couple of days, the threat of heavy rain will
generally be decreasing as the broad lower level circulation
associated with Kay continues to spin down and move southwestward
away from California.  However, residual moisture and instability
together with the decoupled upper-level circulation of Kay will
keep a good chance of showers and embedded thunderstorms across
the southern half of California, Sierra Nevada and into portions
of the Desert Southwest.  Locally heavy rain is possible but
widespread flooding is not expected.

The next Storm Summary will be issued by the Weather Prediction
Center at 800 PM PDT. Please refer to your local National Weather
Service office for additional information on this event.

Kong