On Dec. 1, snowpack across most of the basins in the West was less than 75 percent of historical norms; many were below 25 percent. Starting Dec. 10, a series of atmospheric rivers and snow events erased those deficits. By January, basin totals in California had increased to about 200 percent of normal. California ended the month much wetter than average, which was much needed, since seven of its last 10 winters have been drier than average.

Source: Washington Post January 22, 2022 22:56 UTC