A remarkably wet kickoff to Northern California's rainy season has coincided with a desperately dry fall in Southern California a huge disparity, perhaps unprecedented, between the haves and have-nots of rainfall.
Los Angeles usually gets several inches of rain by now, halfway into the rainy season, but it's only recorded a fifth of an inch downtown since July, its second driest period in almost 150 years of record-keeping. The rest of Southern California is just as bone-dry.
At the same time, much of the northern third of the state has weathered nearly two months of storms, flooding and even tornadoes. Santa Rosa, north of San Francisco, has received more rain than nearly any other city in California nearly two times its average rainfall to date. At the city's airport, almost 7 inches fell on Nov. 20 alone, an all-time daily record.
In California climatology, only one prediction is downright easy to make: Summers will be dry across most of the state. But California's winters are extremely variable, and how the next three months historically the wettest of most years will unwind is anyone's guess.
Increasingly pronounced weather extremes have been a growing area of interest among scientists and state officials, who frequently cite "weather whiplash" "wetter wets" and "drier dries" as one of the most pressing climate-related challenges facing California.
Mid-winter wildfires are just one potential outcome of this climate pattern. Increasingly erratic and unpredictable water cycles are another. California's intricate system of reservoirs, canals and pumping stations was built to accommodate winter rainfall followed by a steady flow of snowmelt in the summer.
California's crazy rain: a stark north-south gap - CalMatters