The Weather Prediction Center

College Park, MD

Storm Summary Message

Storm Summary Number 6 for Heavy Rainfall Associated with Rosa
NWS Weather Prediction Center College Park MD
800 PM PDT Tue Oct 02 2018

...Heavy rain associated with Rosa is expected to gradually wind
down across the Four Corners region...

Flash flood warnings, flood warnings and advisories are in effect
for parts of central Arizona and near the Death Valley National

Flash flood watches remain in effect over central and southwestern
Arizona, much of Utah, and into parts of eastern Nevada, southwest
Colorado and southeastern Idaho.

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

At 700 PM PDT...tropical moisture associated with the remnants of
Rosa continued to trigger scattered heavy rain and thunderstorms
from the Desert Southwest into the Great Basin.  National Weather
Service radars showed scattered areas of moderate to heavy rain
with embedded thunderstorms moving northeastward across the
interior sections of California across Nevada into Utah, and from
central Arizona into the Four Corners region.

...Selected preliminary Storm Total Rainfall in inches from 800 AM
PDT Sun Sep 30 through 700 PM PDT Tue Oct 02...

TOWERS MOUNTAIN                       6.53
AJO 0.4 W                             5.42
BLACK MOUNTAIN SHADOWS                3.58                    
PISINEMO                              3.42                    
TATUM BASIN INFLOW                    3.30                    
SASABE                                2.68                    
PHOENIX/SKY HARBOR INTL ARPT          2.63                    
SCOTTSDALE MUNI ARPT                  2.32                    
GILA BEND (AAF)                       2.16                    
LUKE AFB/PHOENIX                      2.14                    
DEER VALLEY 6 ESE                     2.10                    
YUMA 13.8 ESE                         2.05                    
DURHAM WASH                           1.91                    
RIO RICO 9 NNW                        1.75                    
KEYSTONE PEAK                         1.57                    
TUSCON 10.7 WNW                       1.55                    
RACKENSACK CANYON                     1.09                    
FLAGSTAFF PULLIAM AIRPORT             1.03                    

From tonight into Wednesday, the remnants of Rosa are forecast to
advance further northeastward into the central Rockies. 
Additional rainfall of up to an inch, locally higher in areas of
mountainous terrain, can be expected through Wednesday morning for
portions of Arizona into the Four Corners region. However, given
heavy rain over the past 2 days across Arizona and anomalous
moisture in place over the Southwest, a Moderate Risk of excessive
rainfall remains over central Arizona with a Slight Risk over the
rest of Arizona into a good portion of Utah and western Colorado.

The next storm summary will be issued by the Weather Prediction
Center at 200 AM PDT. Please refer to your local National Weather
Service office for additional information on this event.


Last Updated: 1112 PM EDT TUE OCT 02 2018