1/28/15 2:30 pm

Weather briefing from the NOAA:

A slow-moving trough will push copious amounts of moisture into Arizona Thursday night through Saturday. The subtropical origins of the air mass will provide the potential for moderate to heavy rainfall…and relatively high snow levels through much of the event. Snow levels for most of the event will be above 8000 feet…dropping to 7000-7500 feet by late Friday night or Saturday morning.

Precipitation will become widespread on Thursday night… continue through Friday night…and taper to showers on Saturday. The greatest rainfall accumulations are expected from late Thursday night through Friday night. Snow levels will remain above 8000 ft through Friday, and lower to 7000-7500 ft by Saturday morning.

The greatest impacts will be from elevated stream flows and ponding of water on roads. Flooding is not anticipated with this event. Expect hazardous driving in heavy snow at the highest elevations, above 8500’.