Storm Summary Number 4 for Heavy Rainfall and High Wind Associated
with Hilary
NWS Weather Prediction Center College Park MD
800 PM PDT Mon Aug 21 2023

...Scattered heavy showers and thunderstorms continue as remnant
moisture from Hilary dwells over the Northern Rockies and Great
Basin tonight...

Flood Watches are in place in portions of the Northern Rockies and
Great Basin.

High Wind Warnings are in place in parts of southeast Montana.

Wind Advisories are in place over western Montana, eastern Idaho,
and northern Utah.

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

At 700 PM PDT...Latest surface observations and regional radar
mosaic show widely scattered showers over the Northern Rockies on
south to the northern Great Basin. Hilary no longer has a denoted
circulation center at the surface, but its remnant moisture
remains responsible for the showers throughout the region this
evening. Note: rainfall observations for California and Arizona
were collected beginning this Friday at 7 AM PDT, while
observations over Nevada were collected starting Saturday at 7 AM
PDT.

...Selected preliminary Storm Total Rainfall in inches from 700 AM
PDT Fri Aug 18 through 700 PM PDT Mon Aug 21...

...IDAHO...
DOLLARHIDE SUMMIT                    3.00 ELEVATION 8420FT   
NORTH FORK                           2.74 ELEVATION 6300FT   
WOODHEAD BURN                        2.48 ELEVATION 6476FT   
SNAKE RIVER                          2.45 ELEVATION 4376FT   
MCCALL ARPT                          2.33 ELEVATION 5020FT   
POLLOCK                              2.16                    
ELK CITY                             1.14                    

...MONTANA...
ALBRO LAKE                           2.30 ELEVATION 8300FT   
CARROT BASIN                         2.30 ELEVATION 9000FT   
BEAVER CREEK                         2.00 ELEVATION 7850FT   
LAKEVIEW RIDGE                       1.70 ELEVATION 7400FT   
LOWER TWIN                           1.50 ELEVATION 7900FT   
BLACK BEAR                           1.40 ELEVATION 8170FT   
LOLO PORTABLE NO.7                   0.73                    

...OREGON...
MORGAN MOUNTAIN                      3.29 ELEVATION 4200FT   
SPARTA BUTTE                         2.08 ELEVATION 4265FT   
BLUE CANYON                          1.81                    
HEREFORD                             1.59                    
ELK CREEK                            1.57 ELEVATION 6576FT   
REDMOND 9 SE                         1.56                    
ONTARIO MUNI APRT                    1.51                    

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

...ARIZONA...
YUMA ARPT                              69                    
SAFFORD 4 ENE                          60                    
BENDER SPRINGS                         59                    
MOBILE 2.2 SE                          47                    
GILA BEND                              46                    

...CALIFORNIA...
MAGIC MOUNTAIN TRUCK TRL               87                    
BIG BLACK MOUNTAIN                     84                    
ESSEX 10 SSE                           83 OLD WOMAN MOUNTAIN 
PALOMAR MTN LOOKOUT                    79                    
PIGSAH PEAK                            79                    
HAUSER MOUNTAIN                        78                    
VALLEY CENTER 7 E                      70                    
CRESTLINE 5 NW                         69                    
SANTA CLARITA 10 ESE                   64 ELEVATION 4483FT   
THOUSAND OAKS 8 SW                     57 BONEY MOUNTAIN     
OCEANSIDE 5 NW                         52 CAMP PENDLETON     

...MONTANA...
ANTELOPE                               57 RAWS               
YELLOWSTONE CLUB - AVALANCHE           57                    
HARKNESS                               56 RAWS               
NORRIS HILL                            54 MT DOT             

...NEVADA...
WHEELER PEAK 2 ENE                     69 ELEVATION 9268     

...UTAH...
CARDIFF PEAK                           75 ELEVATION 10059FT  
WINDY PEAK                             69 ELEVATION 10662FT  
EVANSTON-UINTA CNTY ARPT               66                    
LOGAN PEAK                             66 ELEVATION 9713FT   
CENTRAL WASATCH PEAKS - EAST           64 ELEAVATION 11065FT 

...Selected preliminary Storm Total Rainfall in inches where the
event has ended...

...ARIZONA...
HILLTOP                              2.10                    
TWEEDS POINT                         1.67                    
LINDBERGH HILL                       1.54                    
BLACK HILLS                          1.47                    
YELLOW JOHN MOUNTAIN                 1.35                    
MUSIC MOUNTAIN                       1.17                    
PARKER                               1.11                    
YUMA PROVING GROUND                  0.79                    

...CALIFORNIA...
MT. SAN JACINTO                     11.74 ELEVATION 8616FT   
RAYWOOD FLATS                       11.73 ELEVATION 7079FT   
HEART BAR                            9.67 ELEVATION 6690FT   
MOUNT WILSON                         8.56                    
RANCHITA                             7.38 ELEVATION 4180FT   
MT LAGUNA                            7.11 ELEVATION 6000FT   
LEWIS RANCH                          7.04                    
LOWER ANGEL PEAK                     6.63                    
WRIGHTWOOD                           6.23 ELEVATION 5950FT   
UPPER TAHQUITZ CREEK                 6.22 ELEVATION 5600FT   
WALKER PASS                          6.09 ELEVATION 5572FT   
AVEK                                 6.04                    

...NEVADA...
LEE CANYON                           9.20 ELEVATION 8618FT   
MT. CHARLESTON 4.9 NW                7.80 ELEVATION 8906FT   
LOWER ANGEL PEAK                     6.52                    
YUCCA MOUNTAIN                       5.84 ARL SORD           
AREA 12 MESA                         5.79 ARL SORD           
QUIMA PEAK                           4.03                    
TIMBER MTN                           3.76                    
RAINBOW CANYON                       3.40                    
BERRY CREEK                          3.10                    
ASH MEADOWS                          2.00                    

...WYOMING...
LEWIS LAKE DIVIDE                    1.10 ELEVATION 7850FT   
YELLOWSTONE LAKE                     0.92 ELEVATION 7835FT   


Hilary's remnant moisture will linger through the overnight hours
across the northern Rockies and interior Northwest. Accordingly,
isolated to scattered instances of flash flooding are possible
tonight across much of the interior Northwest, where a Slight Risk
of Excessive Rainfall is in effect for portions of northern ID and
northwest MT. For more information regarding the Excessive
Rainfall impacts due to the remnants of Hilary, refer to the
Weather Prediction Center at wpc.ncep.noaa.gov.

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

Mullinax