Most October Precipitation in 20 Years, Just Off the Coast
... And like that, Mother Nature flips a switch and we go from some of our driest weather in some time to some of our wettest weather in October, ever! There is a massive storm that is going wreak havoc on the northern half of California and Western Nevada. This storm is going to produce copious amounts of precipitation. That precip will spill over into the leeward valleys of Reno and Carson City and deliver some much needed rain. Maybe too much as flash flood warnings and watches are out for the entire area. This storm will pull up very warm air and tap into sub-tropical moisture. I believe the modern acronym is that we are about to experience an AR event (atmospheric river). Very unusual for October. Here is what the EC see's in the way of timing. Friday October 22nd Noon : This is the weakest of the waves of moisture heading our way. There will be a window of on again off again precip throughout tomorrow (10/23), then very early Sunday the big stuff comes in: Sunday October 24