This study highlights differences between rainfall and AR characteristics in coastal versus inland northern California - differences that largely determine the regional geography of flood risks and water reliability. ASUS66 KSTO 180130 MAX/MIN TEMPERATURE AND PRECIPITATION TABLE FOR CALIFORNIA NATIONAL WEATHER SERVICE. This is particularly important for extreme precipitation in the northern Sierra Nevada, including river basins above Oroville Dam and Shasta Dam. Northern California Daily Rainfall Totals. The San Francisco Bay Area terrain gap in the California Coast Range allows more AR water vapor to reach inland over the Delta and Sacramento Valley, and thus influences precipitation in the Delta’s catchment. Before a wet February, the 2013-14 water year in California was on its way to being the driest. On average, ARs contribute 79%, 76%, and 68% of extreme-rainfall accumulations (i.e., top 5% events annually) in the north coast, northern Sierra, and Transverse Ranges of southern California, respectively. Accumulated Annual Precipitation in California, 1895 - Present. Northern California also receives more AR landfalls with longer durations and stronger Integrated Vapor Transport (IVT). These events typically last longer and have higher event-precipitation totals than those in southern California. properly understand the intensity of the (usually few) large storms that contribute so much to Californias precipitation totals but that also go beyond. On average, northern California receives 25 to 45 rainfall events annually (40% to 50% of which are AR-related). Approximately 10% to 30% of annual precipitation at locations across the state is from only one large storm. On average, 10–40 and 60–120 hours of rainfall in southern and northern California, respectively, are responsible for more than half of annual rainfall accumulations. This study analyzes a 2-decade-long hourly precipitation data set from 176 California weather stations and a 3-hourly AR chronology to report variations in rainfall events across California and their association with ARs.

Over the Northeast, there is a chance of heavy rain over. Heavy rain will progress relatively slowly east toward the lower Mississippi Valley over the next couple of days. Everyone is welcome to research, learn, and stay informed about California's most precious resource - water. This information is updated dynamically from a variety of data sources. California is regularly affected by floods and droughts, primarily as a result of too many or too few atmospheric rivers (ARs). A multi-day heavy rainfall event is in progress over parts of the southern Plains that may produce instances of flash flooding in urban areas and places with poor drainage. Welcome to California Water Watch This site offers the most current local and statewide water conditions down to your region and even your neighborhood.

Ca precipitation totals