Atmospheric River in the Pacific Northwest and Northern Rockies this Weekend

A Pacific storm and atmospheric river will impact the Pacific Northwest states and northern Rockies this weekend, bringing locally heavy low elevations rain and heavy high elevation snow in the mountains. By Sunday over the Interior Northwest, rain combined with snowmelt will increase the risk of flood hazards. Flood Watches are in effect. Read More >

Alamosa

*Mean Date of First Measurable Snowfall………....…...........November 1st

Earliest First Measurable Snowfall: 6.7 inches..........September 8th, 2020

Latest First Measurable Snowfall: 0.7 inches...........December 23rd, 1939

Greatest Amount for First Snowfall: 13.1 inches...........October 30th, 1991

(2.0 inches followed on October 31st, 1991)

*Mean Date of Last Measurable Snowfall………....….........................April 26th

Earliest Last Measurable Snowfall: 0.5 inches..................February 20th, 1934

Latest Measurable Snowfall: 0.2 inches.....................................June 13th, 1983

Greatest Amount Last Measurable Snowfall: 13.7 inches.......March 30th, 1962

Snowfall data has been compiled using NWS Pueblo and NCEI records

* Mean Dates based on the threaded Period of Record to date

(measurable snowfall defined as being greater than or equal to 0.1 inches)

Current through December, 2021

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Atmospheric River in the Pacific Northwest and Northern Rockies this Weekend

Average First and Last Snowfall: Alamosa