Weather tracker: Warm March in US leaves snowpack critically low

Concerns about coming wildfire risk, and temperatures also remain high on other side of Pacific where rare tropical cyclone has formed

After a historically warm winter across nine states in the US, the first month of meteorological spring again brought exceptionally high temperatures, with numerous states recording new all-time high temperatures in March. The remarkable intensity and longevity of the warmth have left much of the mountain snowpack, a crucial source of water for millions in the American west, at critically low levels.

Though precipitation totals tend to increase in spring, the low snowpack has raised concerns about a potentially severe wildfire season if conditions do not improve soon. And with further spells of abnormally warm, dry weather expected this week, the outlook is becoming increasingly worrying heading into the late spring and summer months.