The Weather Prediction Center

College Park, MD

Storm Summary Message

Storm Summary Number 3 for Heavy Rainfall and High Winds
Associated with Kay
NWS Weather Prediction Center College Park MD
800 PM PDT Sat Sep 10 2022

...Direct threat of heavy rainfall from the remnants of Kay
winding down... 

Flash Flood Warnings were in effect for a few isolated locations
in southern California and northern Arizona.

Flood Watches were in effect for portions of southern California,
southern Nevada, and northwestern Arizona.

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

At 700 PM PDT...the remnant low associated with Kay was located
over the Pacific Ocean near 31.2N, 120.8W, or about 220 miles WSW
of San Diego. A couple outer bands of light to moderate showers
were moving towards the northwest along coastal California near
San Luis Obispo and from Santa Barbara southeast towards the
western side of metro Los Angeles. Additional moderate to heavy
showers continued further east along a moisture plume associated
with Kay over the Mojave Desert and along the Mogollon Rim in
Arizona. Anomalously high moisture was contributing to high rain
rates with individual storms leading to an isolated risk of flash
flooding, particularly near areas of higher terrain. 

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

WATERMAN MOUNTAINS                   4.24                    
GREEN WASH                           2.99                    
CASE GRANDE MUNI ARPT                1.42                    
MOUNT LOGAN                          1.39                    
TUSCON 18 WNW                        1.35                    
RED LAKE                             1.04                    
AK-CHIN VILLAGE                      1.02                    
PAULDEN                              0.92                    
GRAND CANYON NATIONAL PARK ARPT      0.72                    
PHOENIX                              0.58                    
HOLBROOK                             0.55                    
FORT YUMA                            0.32                    

MT LAGUNA                            5.11                    
RANCHITA RAWS                        4.62                    
VOLCAN MOUNTAIN                      4.49                    
JULIAN                               4.39                    
AGUA CALIENTE                        4.07                    
MOUNTAIN SPRINGS GRADE               3.98                    
SAN FELIPE                           2.64                    
LAKE CUYAMACA                        2.49                    
MOUNT SAN JACINTO                    2.23                    
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                    
GILBERT                              0.35                    

PAHUTE MESA                          1.74                    
GRAPEVINE SPRINGS                    1.33                    
ECHO BAY RANGER STATION              0.68                    
MOUNTAIN SPRINGS                     0.55                    

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

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                    

The center of the low formally associated with Kay will continue
to drift slowly to the southwest over the open Pacific Ocean and
weaken throughout the day Sunday. Remnant moisture from this low
will continue to lead to some scattered showers and storms over
central/southern California and the Desert Southwest over the next
few days.

This will be the last Storm Summary issued by the Weather
Prediction Center for this event. Please refer to your local
National Weather service office for additional information.


Last Updated: 1119 PM EDT SAT SEP 10 2022