California Governor Jerry Brown officially declared the drought over last Friday, a dramatic conclusion to years of dry weather capped off by two winters of violent storms. Though drought damage will take years to undo, and another drought may even be around the corner, it was a remarkable turnaround. In fact, according to the National Oceanic and Atmospheric Administration, it was the proverbial one in a hundred shot. “The odds of the state completely recovering from its extreme dryness within two years are estimated at less than one percent,” paleoclimatologist Eugene R. Wahl, told NOAA.