A supermoon, known as the “Beaver Moon,” is causing significant changes in ocean tides along California’s coast this week. This year’s closest full moon is impacting coastal conditions just as an atmospheric river drenches Northern California.
Forecasters warn of king tides bringing dangerous rip currents, which increase the risk of drowning and coastal flooding, especially in Southern California. While Northern California faces heavy rain, the southern regions will see minimal precipitation.
In Northern California, storms have led to emergency services being deployed in two counties. The National Weather Service predicts intense downpours across several areas, including Blue Canyon and Quincy, where up to three inches of rain are expected. San Francisco is set to receive up to half an inch, while Santa Rosa anticipates slightly more.
The rain, which began on Tuesday, is likely to continue into Friday morning. According to meteorologist Sara Purdue, though the heaviest rainfall may have passed, lighter rain will linger in Shasta County.
The Beaver Moon earned its name from the time when beavers build dams for winter. Its slightly elongated orbit allows it to come closer to Earth during certain times, appearing larger and brighter. This supermoon peaked at 221,817 miles from Earth around 5:19 a.m. earlier this week. Its closeness affects ocean tides, and king tides are expected to reach their peak Thursday.
Meteorologist Matt Mehle explains that when viewed from space, Earth shows bulging ocean water on one side due to the moon’s pull. This results in higher tides. The National Weather Service has issued a high-surf warning from Central Coast down to Los Angeles County, urging caution as peak surf can reach up to 18 feet in some areas.
A coastal flood advisory in effect runs from Sonoma to Monterey, impacting San Francisco’s shoreline. Reports have indicated minor flooding in Coyote Creek due to the tide surge. Up north, heavy rainfall is anticipated in Del Norte and Humboldt counties, along with their own coastal flood advisories.
Governor Gavin Newsom is pre-deploying emergency crews to assist in these regions, including fire personnel and engines, aiming to reduce the risks of mudslides and flash floods. Local authorities advise against driving or walking through floodwaters.
Interestingly, social media buzz has been lively, with many sharing stunning images of the supermoon, while others express concern and discuss safety tips related to the turbulent coastal conditions.
Overall, the interplay of the supermoon and atmospheric weather patterns illustrates the complex and sometimes dangerous relationship between celestial events and our natural environment. For more information on this phenomenon, you can check resources like the National Weather Service or the Farmers’ Almanac.
