Arizona, 2022

Heavy Snow in Arizona, December 11 to 12, 2022

December 11 to 12, 2022 · NWS TWC · 2 events in 2 counties and zones

A Winter Storm impacted southeast Arizona, resulting in heavy snow for some of the Sky Islands and even some light snow accumulations for valley cities between 4000 and 5000 feet. The light accumulations caused some districts in Cochise County to delay the start of the school day.

Where it happened

Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS TWC wrote it up.

A Winter Storm impacted southeast Arizona, resulting in heavy snow for some of the Sky Islands and even some light snow accumulations for valley cities between 4000 and 5000 feet. The light accumulations caused some districts in Cochise County to delay the start of the school day.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

2 heavy snow. Local standard time, as filed.

Heavy Snow, Santa Catalina and Rincon Mountains

When
December 11, 6:00 AM MST to December 12, 3:00 AM MST
Where
Santa Catalina and Rincon Mountains forecast zone
Reported by
COOP Observer
Coordinates
32.501, -111.567 (the zone’s center; the record gives no point)

About a foot of snow occurred near the summit of Mt. Lemmon at elevations above 8000 feet.

Heavy Snow, Galiuro and Pinaleno Mountains

When
December 11, 7:00 AM MST to December 12, 4:00 AM MST
Where
Galiuro and Pinaleno Mountains forecast zone
Reported by
Local Official
Coordinates
32.572, -110.328 (the zone’s center; the record gives no point)

About a foot of snow occurred near the summit of Mt. Graham at elevations above 8000 feet.

What these are

Heavy Snow
Snowfall reaching the local warning threshold without the other hazards of a winter storm.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Arizona in 2022Every state in 2022This day in weather historyWarnings in Arizona, December 2022

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1060237, 1060241.