Widespread precipitation is expected from the West Coast to the Rockies
late this week as an upper trough and associated cold front edge inland
over the Western U.S.. A rich plume of moisture feeding into
drought-stricken California will fuel heavy rains on Friday. The
thirst-quenching downpours will pose a risk of flash flooding especially
over the upslope side of the terrain. However, accumulating snows along
the Sierra Nevada range should help with drought relief. On
Saturday precipitation will shift eastward into the Intermountain...