Southwest Heavy Rainfall and Flash Flooding

1. Summary #1

   Nov 2, 02:48 AM UTC

   Widespread heavy rain and significant flash flooding across Arizona and the Four Corners region continues into tonight

   Full text

   ACUS41 KWBC 020248
   SCCNS1
   
   Storm Summary Number 1 for Southwest Heavy Rainfall and Flash
   Flooding
   NWS Weather Prediction Center College Park MD
   800 PM MST Sun Nov 01 2026
   
   ...Widespread heavy rain and significant flash flooding across
   Arizona and the Four Corners region continues into tonight...
   
   Flood Advisories are in effect for portions of Arizona, New Mexico
   and far west Texas.
   
   Winter Weather Advisories are in effect for portions of the
   Colorado and Utah Mountains.
   
   Winter Storm Warnings are in effect for portions of the Colorado
   mountains and northeast Nevada.
   
   Flash Flood Warning is in effect for northeastern Arizona.
   
   Flood Warnings are in effect for portions of northern Arizona,
   northwestern New Mexico, far southwestern Colorado, and southern
   Utah.
   
   Flood Watches are in effect for the Four Corners region.
   
   For a detailed graphical depiction of the latest watches, warnings
   and advisories, please see www.weather.gov
   
   At 700 PM MST...A deep upper level trough over the Great Basin,
   combined with an anomalous plume of Pacific moisture, continued to
   produce rain across the Southwest. At the surface, a 1001 mb
   (29.56 in Hg) low was analyzed over central Utah with a cold front
   extending southwestward across northwest Arizona into southern
   California, while a second low over southeast Colorado had a cold
   front extending south through central New Mexico. Rain continued
   this evening across much of Arizona, Utah, western Colorado, and
   northern Mew Mexico, with snow at the higher elevations of the
   Colorado Rockies. Heavy rain over saturated ground produced
   widespread flash flooding on Sunday. An estimated 150 to 200 homes
   were flooded in the Rimrock and Lake Montezuma areas of Arizona,
   with evacuations ongoing, and more than ten swift water rescues
   were reported in and around Tuscon.
   
   ...Selected preliminary Storm Total Rainfall in inches from 700 AM
   MST Sat Oct 31 through 700 PM MST Sun Nov 01...
   
   ...ARIZONA...
   CROWN KING RAWS                      6.21
   SIX SHOOTER CANYON                   5.67
   GLOBE RAWS                           5.58
   COLUMBINE RAWS                       5.11
   OAK CREEK AT SLIDE ROCK              4.72
   SOLLERS RAWS                         4.39
   SUMMERHAVEN 3 N                      4.22
   RINCON RAWS                          4.19
   HUMBUG CREEK                         4.06
   PINE RAWS                            3.91
   LAKESIDE 4.5 NW                      3.80
   IRON SPRINGS RAWS                    3.76
   TONTO BASIN 8 WNW                    3.70
   MORMON LAKE                          3.53
   SUNSET POINT                         3.53
   FLAGSTAFF AIRPORT                    3.42
   TUSCON INTL AIRPORT                  1.92
   PRESCOTT                             1.88
   PHOENIX DEER VALLEY                  1.76
   PHOENIX SKY HARBOR                   1.09
   
   ...COLORADO...
   SANDOVAL RAWS                        2.98
   DURANGO 6 NNW                        2.95
   SALTER RAWS                          2.66
   DEVIL MOUNTAIN RAWS                  2.58
   MESA MOUNTAIN RAWS                   2.28
   BIG BEAR PARK RAWS                   2.20
   MOREFIELD RAWS                       2.11
   CHAPIN RAWS                          1.99
   CORTEZ                               1.17
   
   ...NEVADA...
   KYLE CANYON                          1.74
   ELBOW CANYON                         1.73
   KANE SPRINGS RAWS                    1.71
   IMMIGRATION WASH RAWS                1.59
   CHERRY CREEK SUMMIT                  1.56
   
   ...NEW MEXICO...
   ALBINO CANYON RAWS                   2.09
   WASHINGTON PASS RAWS                 1.89
   CHAMA                                1.80
   DULCE                                1.72
   MOGOLLON RAWS                        1.72
   LUNA 1 ENE                           1.70
   STONE LAKE RAWS                      1.56
   FARMINGTON                           0.79
   
   ...UTAH...
   LAVA POINT RAWS                      3.77
   FISHLAKE                             3.54
   MOON LAKE                            2.27
   BUCK FLAT                            2.26
   ZION NP 18 SSE CEDAR CITY            2.17
   WILLOW GULCH RAWS                    2.03
   ASSAY                                1.99
   WOLF CREEK SUMMIT                    1.98
   EAST FORK VIRGIN RIVER NR GLENDALE   1.91
   AGUA CANYON                          1.84
   BLANDING                             1.63
   
   
   The upper level trough and associated surface lows will continue
   to move eastward tonight, gradually tapering the heavy rain from
   west to east across the Four Corners region. A Moderate risk
   (level 3 of 4) of excessive rainfall remains in effect through
   early Monday morning for portions of the Mogollon Rim of Arizona
   and the San Juan Mountains of southwest Colorado, as well as from
   northwest Arizona into southwest Utah, with a broader slight risk
   (level 2 of 4) across much of the Four Corners states. Saturated
   soils will cause additional rainfall to quickly become runoff,
   keeping dry washes, arroyos, slot canyons, and burn scars
   especially vulnerable to flash flooding, while river flooding will
   continue in parts of the region. High-elevation wet snow is
   expected tonight over the northern and central Rockies as far
   south as the San Juan Mountains, where Winter Storm Warnings are
   in effect. The Storm Prediction Center also has a Slight Risk of
   severe thunderstorms from the southern Rockies to the southern
   High Plains tonight. On Monday, the system will develop into a
   strong low pressure system over the northern Plains, shifting the
   focus for heavy rain and severe weather into the Plains.
   
   The next Storm Summary will be issued by the Weather Prediction
   Center at 800 AM MST. Please refer to your local National Weather
   Service office for additional information on this event.
   
   Eovino
   $$

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