Long-duration storm system to produce heavy snow across much of the U.S. West

Long-duration storm system to produce heavy snow across much of the U.S. West

A prolonged Atmospheric River will produce heavy snow across much of the U.S. West through Wednesday, December 15, 2021. Snowfall of 60 – 150 cm (2 – 5 feet) or more is likely in the Sierra Nevada, with 30 – 90 cm (1 – 3 feet) expected across much of the western…

Another atmospheric river hits flood-stricken British Columbia, Canada

Another atmospheric river hits flood-stricken British Columbia, Canada

The third atmospheric river in the past 7 days is affecting British Columbia, Canada since early Tuesday morning (LT), November 30, 2021, bringing heavy rain and mountain snow. Significant precipitation continues to overspread coastal and southern portions of…

Atmospheric river hits southern Alaska, dropping historic rainfall, U.S.

Atmospheric river hits southern Alaska, dropping historic rainfall, U.S.

An atmospheric river impacted southern Alaska over the past couple of days, bringing prolonged heavy rainfall which resulted in historic rainfall totals. The rain began on Friday, October 29 and continued through November 3. Flooding was reported in Girdwood, near…

Multiple landfalling atmospheric rivers aim U.S. West Coast

Multiple landfalling atmospheric rivers aim U.S. West Coast

A series of landfalling atmospheric rivers (ARs) will impact the western United States, and British Columbia, this week into early next week, bringing excessive rainfall, strong winds, and mountain snow. This could lead to flash floods and dangerous debris flows in…