 The warming led, however, to avalanches in the Pacific Northwest, where three people were killed on Snoqualmie Pass on February 24.Above average to near average temperatures were recorded throughout the U.S. in March, except for the Pacific Northwest.The melting of the heavy winter snowfalls and thawing of the ground, along with the wettest March on record in the northeastern states led to record floods in most of the region's rivers, especially on smaller tributary streams.