A very strong jet stream moving across the Pacific brought abundant moisture and significant precipitation to northern Arizona on January 21th.  The snow level started out around 3400 feet with  significant snow above 5000 feet.  The jet stream buckled during the day on the 21st and brought much warmer air to the area. This raised the snow level to almost 8000 feet for several hours.  A strong cold front then moved across the and brought the snow level crashing to near 4000 feet.  The cold front also brought high winds to the area. This storm caused power outages, flooding, evacuations, mudslides, collapsed roofs, and wind damage.
The higher elevations received between 4 and 8 feet of snow from all three storms.  Lower elevations along the south slopes of the Mogollon Rim and mountains of Gila and Yavapai County received up to 12 inches of rain from all three storms.  Snowfall and rainfall records were shattered.  The combination of heavy rain and melting snow caused flooding problems in the lower elevations.  Deep snow and mud stranded many people and livestock across the Hopi and Navajo Nations.

Flash Flood in YAVAPAI, ARIZONA
From 21-JAN-10 20:30:00 to 21-JAN-10 21:30:00 (MST-7)
Location: CORDES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A family of four partially crossed the bed of the Agua Fria River in a truck (SUV) when flash flooding occurred.  They became stuck in the flood waters. A swift water rescue was in possible and a helicopter could not be dispatched due to the weather conditions. The 6 year old boy was subsequently swept downstream and drown.

Heavy Rain in YAVAPAI, ARIZONA
From 21-JAN-10 17:00:00 to 22-JAN-10 17:00:00 (MST-7)
Location: CASTLE HOT SPGS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A strong winter storm dropped 3.55 inches of rain in 24 hours.

Flood in GILA, ARIZONA
From 21-JAN-10 17:00:00 to 22-JAN-10 17:00:00 (MST-7)
Location: GISELA
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Heavy rain and melting snow caused flooding along Tonto Creek in Gisela south to Tonto Basin. The heavy rain caused a mud slide that temporarily closed Highway 87.

Flood in YAVAPAI, ARIZONA
From 21-JAN-10 21:30:00 to 22-JAN-10 21:30:00 (MST-7)
Location: BUMBLE BEE
Flood cause: Heavy Rain / Snow Melt
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Heavy rain and melting snow caused major flooding in Black Canyon City.  Evacuations orders were issued for communities along the Agua Fria River and Black Canyon Creek.  One trailer park had damage to all 50 trailers.

Winter Storm in OAK CREEK AND SYCAMORE CANYONS, ARIZONA
From 21-JAN-10 00:00:00 to 23-JAN-10 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Five to 20 inches of snow fell across Oak Creek and Sycamore Canyon.  A section of Highway 89 through Oak Creek Canyon gave way due to the rain and snow soaked dirt.

High Wind in YAVAPAI COUNTY MOUNTAINS, ARIZONA
From 21-JAN-10 18:00:00 to 21-JAN-10 21:00:00 (MST-7)
Magnitude: 76.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Prescott Airport reported a peak wind gust of 67 MPH.  The Humbug RAWS reported a peak wind gust of 76 MPH.

High Wind in YAVAPAI COUNTY VALLEYS AND BASINS, ARIZONA
From 21-JAN-10 18:00:00 to 21-JAN-10 21:00:00 (MST-7)
Magnitude: 69.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The RAWS station at Stanton measured a peak wind gust of 69 MPH and the RAWS at Goodwin Mesa reported a peak wind gust of 62 MPH.

Winter Storm in BLACK MESA AREA, ARIZONA
From 21-JAN-10 00:00:00 to 23-JAN-10 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Up to 36 inches of snow fell across the higher elevations of Black Mesa.

Winter Storm in NORTHEAST PLATEAUS AND MESAS SOUTH OF HIGHWAY 264, ARIZONA
From 21-JAN-10 00:00:00 to 23-JAN-10 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Kykotsmovi had 12 inches of snow.

Winter Storm in EASTERN MOGOLLON RIM, ARIZONA
From 20-JAN-10 22:00:00 to 23-JAN-10 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Between 36 and 48 inches of snow fell across the Eastern Mogollon Rim.  The roof of a fire station and a water office collapsed in Pinetop-Lakeside.

Winter Storm in NORTHERN GILA COUNTY, ARIZONA
From 21-JAN-10 00:00:00 to 23-JAN-10 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Payson received at least 7 inches of snow and Pine received at least 25 inches of snow.

Winter Storm in YAVAPAI COUNTY VALLEYS AND BASINS, ARIZONA
From 21-JAN-10 00:00:00 to 23-JAN-10 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Between 4 and 8 inches of snow fell below 5000 feet in Yavapai Country.

Winter Storm in WHITE MOUNTAINS, ARIZONA
From 21-JAN-10 00:00:00 to 23-JAN-10 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Between 40 and 60 inches of snow fell across the White Mountains over a three day period. Greer had 50 inches of snow and Alpine had 48 inches.

Heavy Rain in YAVAPAI, ARIZONA
From 21-JAN-10 20:00:00 to 22-JAN-10 20:00:00 (MST-7)
Location: BUMBLE BEE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

A strong winter storm produced 6.57 inches of precipitation in 24 hours at the Sunset Point RAWS.

Winter Storm in KAIBAB PLATEAU, ARIZONA
From 20-JAN-10 21:00:00 to 23-JAN-10 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Jacob Lake reported at least 24 inches of new snow.

Winter Storm in MARBLE CANYON AND GLEN CANYON, ARIZONA
From 21-JAN-10 00:00:00 to 23-JAN-10 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

At 3.2 inches of snow fell in Page.

Winter Storm in YAVAPAI COUNTY MOUNTAINS, ARIZONA
From 21-JAN-10 00:00:00 to 23-JAN-10 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Prescott received at least 11 inches of snow.

Winter Storm in CHUSKA MOUNTAINS AND DEFIANCE PLATEAU, ARIZONA
From 21-JAN-10 00:00:00 to 23-JAN-10 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

At least 12 to 14 inches of snow fell over the Chuska Mountains and Defiance Plateau.

Heavy Rain in YAVAPAI, ARIZONA
From 21-JAN-10 20:00:00 to 22-JAN-10 20:00:00 (MST-7)
Location: DATE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

A strong winter storm produced between 4 and  6.50 inches of precipitation in 24 hours across southern Yavapai County.

Heavy Rain in GILA, ARIZONA
From 21-JAN-10 20:20:00 to 22-JAN-10 20:20:00 (MST-7)
Location: YOUNG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A strong winter storm produced 4.01 inches of precipitation in 24 hours. Rainfall over a three day period ranged from 6 to 10 inches across Gila Country.

Winter Storm in LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY, ARIZONA
From 21-JAN-10 20:00:00 to 23-JAN-10 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Six to nine inches of snow fell across the Little Colorado River in Apache Country.  Springerville received 15 inches of snow.

Winter Storm in WESTERN MOGOLLON RIM, ARIZONA
From 20-JAN-10 22:00:00 to 23-JAN-10 09:00:00 (MST-7)
Property damage: 1.00M
Crop damage: 0.00K
Reported by: Official NWS Observations

Between 28 and 38 inches of snow fell across the Flagstaff area.  The snow turned to rain for between 4 and 6 hours when about 3/4 of an inch of rain fell. Other locations closer to the edge of the Mogollon Rim received close to 60 inches of snow.  Elevations above 8000 feet had all snow...between 40 and 80 inches (at 10,800 feet).  At least four businesses had their roofs collapse due to the weight of the snow and rain soaked snow. A very large tree blew down on two homes in Williams.

Winter Storm in GRAND CANYON COUNTRY, ARIZONA
From 20-JAN-10 22:00:00 to 23-JAN-10 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

At least 31 inches of snow fell at the South Rim of the Grand Canyon.

Winter Storm in COCONINO PLATEAU, ARIZONA
From 20-JAN-10 22:00:00 to 23-JAN-10 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ash Fork reported at least 9 inches of new snow.

Winter Storm in LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY, ARIZONA
From 21-JAN-10 20:00:00 to 23-JAN-10 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Two to four inches of snow fell across the Little Colorado River Valley in Coconino Country.

Winter Storm in LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY, ARIZONA
From 21-JAN-10 20:00:00 to 23-JAN-10 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Four to six inches of snow fell across the Little Colorado River Valley in Navajo County.