It's like a fire hose flailing out of control on the West. What's happening?

Night - Partly cloudy. Winds SW at 14 to 17 mph (22.5 to 27.4 kph). The overnight low will be 35 °F (1.7 °C). Partly cloudy with a high of 52 °F (11.1 °C). Winds variable at 13 to 16 mph (20.9 ...

By the evening, much of the cloud will move away leaving clear skies by the end of the day. Dry and settled conditions. Outlook for Tuesday to Thursday A dry day is expected on Tuesday ...