January 2018 Western United States floods

The January 2018 American West floods occurred due to heavy precipitation in the Western United States. While wildfires in Southern California exacerbated the rain's effects there, other states, like Nevada, also experienced flooding.

Effects
Gusts as high as 75 mph, hurricane-force, were reported, and scattered power outages were expected. The storm brought much-needed rain to places in the desert like Las Vegas and Phoenix—with the risk of flash floods. Also, mountain snow was expected throughout the area, even into Canada, providing much-needed replenishment to snowpacks.

California
18 in of snow was reported on Mammoth Mountain.

The heavy rains caused flooding and mudflows in regions burned by recent wildfires, killing at least 23 people.

Nevada
Cities like Las Vegas experienced heavy flooding. Roads and highways underwater lead to road closures. At least two people had to be rescued from a flooded highway in Las Vegas. 6 - 12 in of snow were expected in the mountain of southern Nevada, causing winter warnings to be issued.

Oregon and Washington
The Portland area experienced heavy flooding, which interfered with transportation. In addition, the Northwest Avalanche Center issued a high danger warning for much of the mountainous areas of Oregon and Washington, excluding ski areas, as 4 - 8 in of snow were expected. 2 in of rain, as well as tropical storm-force wind gusts as high as 60 mph, were expected on the Oregon coast.