The National Weather Service in Sacramento has issued an active weather alert, cautioning residents about an extended period of moderate to heavy rains, mountain snow, and gusty winds expected to impact the region well into next week. According to the NWS, a series of three storm systems are set to sweep through Northern California, bringing a wet atmospheric river pattern that shows no sign of letting up. As the first storm continues through tomorrow, elevations above 6,500 feet in the northern Sierra and southern Cascades are under a Winter Weather Advisory due to forecasted snow accumulation and potential travel disruptions…