NWS warns of excessive rainfall in California
The National Weather Service warns of a Moderate Risk of excessive rainfall in southern California, with potential flash flooding and mudflows, as a series of storms approach the state.
Storms on the horizon for California
As the week before Christmas approaches, California is gearing up for a possible shift in weather patterns, with indications of a wetter regime on the horizon. AccuWeather senior meteorologist Alex Sosnowski notes that the extent of the storminess will hinge on El Niño’s influence and other climatic factors in the coming weeks.
California set for significant precipitation as atmospheric river develops
An evolving storm system off the California coast, forecasted to develop into at least one atmospheric river, is set to deliver substantial rainfall and snowfall across the West Coast starting this weekend. With the Northeast Pacific Ocean as the stage, the interaction of several low-pressure systems is predicted to have significant impact, particularly from November 14 to 17, as per the Atmospheric River Reconnaissance field campaign.
New research clarifies causes of uplift and seismicity in California’s Long Valley Caldera
A recent geophysical study on California’s Long Valley Caldera has unveiled the mechanisms behind its seismic activity and uplift. The research, published in Science Advances, utilized distributed acoustic sensing and machine-learning algorithms to reach its conclusions.
Three atmospheric rivers set to impact Washington, Oregon, and Northern California
A series of atmospheric rivers are slated to affect the Pacific Northwest, starting today and lasting until Monday. The most intense activity is forecasted for Sunday, October 15, 2023, with the potential for strong atmospheric conditions in coastal Oregon.
Hilary becomes the fourth tropical storm or hurricane to reach California intact, brings record-breaking rains
Tropical Storm “Hilary” — previously a Category 4 hurricane — reached California on August 20, 2023, marking its position as one of the rare storms to maintain integrity upon reaching the state. The storm, with surface winds over 80 km/h (50 mph), brought with it record-breaking rainfall and caused widespread flooding and power outages across the region.
Landslide devastates luxury homes in Southern California’s Palos Verdes Peninsula
A destructive landslide tore through luxury homes in Rolling Hills Estates on the Palos Verdes Peninsula in Southern California on Monday, July 10, 2023. The pace of the landslide, which began on Saturday, increased through the weekend and led to the evacuation of residents.
Revival of California’s water: Satellite data reveals record gains
California, under the grip of intense drought for years, experienced its highest year-over-year water gains in the last two decades, as revealed by the GRACE-FO satellite mission, a collaborative initiative between NASA and GFZ. Between October 2022 and March 2023, the state received sufficient rainfall to increase the water levels by approximately 50.8 cm (20 inches), roughly twice the average winter water gain since 2002.
Shallow M5.5 earthquake, series of aftershocks hit Lake Almanor, Northern California
A shallow earthquake registered by the USGS as M5.5 hit Lake Almanor, Northern California at 23:19 UTC on May 11, 2023. The quake was followed by a series of aftershocks, including M5.2 at 10:18 UTC on May 12.
California’s water supply boosted to 100% for the first time since 2006
The Department of Water Resources (DWR) announced the first full water supply allocation since 2006, benefiting 27 million residents across California after a record winter.
