This is likely to be a once in a decade type of storm, with Flood Warnings posted now for western Nevada near any rivers and  creeks, along with areas in the mountains near the same. A very wet and warm atmospheric river storm is approaching the coast, and will bring rainfall totals of up to a foot or more in the mountains, and snow levels which will rise from near the valley floors Saturday morning to over 9,000’ by Sunday midday.

To start with, clouds will increase Friday night and we could see some snow showers or even some freezing rain Saturday morning. As the warmer portion of the storm moves into the region, heavy rain will increase, and the Truckee River will crest over the flood stage starting midday Sunday in Truckee, Sunday evening in Downtown Reno and Sunday night in the Sparks Industrial area. The West and East Forks of the Carson River are also forecast to exceed flood stage Monday afternoon. below are river forecasts for several locations.


Forecast at Truckee, CA


Forecast Downtown Reno


Forecast Sparks at Vista


Forecast E Fork Carson at Markleeville


Forecast Carson River at Carson City

Below are the anticipated impacts of the flooding in Reno and Sparks along the Truckee River, using the December 2005-January 2006 flood as a model.



As if this wasn’t enough, it looks like one or two more atmospheric river storms could be headed our way next week, although they don’t appear to be as strong.