California Weather Warnings
California Faces Severe Flood, Surf, and High-Tide Risks From Storm Swells
Anonymous
The National Weather Service issued short-lived flood advisories for parts of San Bernardino and Los Angeles counties Monday, warning that heavy rain could cause minor flooding in low-lying areas and on roads. Separately, Southern California remained under coastal flood and high-surf advisories through Tuesday as swells from Hurricanes Polo and Odalys brought 4- to 7-foot waves, dangerous rip currents and possible flooding near high tide, especially around Avalon and parts of Long Beach. Low-lying roads, parking areas and walkways were at risk, along with beach erosion and localized damage; forecasters urged people to avoid hazardous water, flooded roads and barricades, while noting the severity of coastal impacts was uncertain. In the Bay Area, unusually high tides could inundate low-lying shorelines, with elevated sea levels linked to El Niño and long-term warming.
Key Points
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The Los Angeles County flood advisory was issued at 5:34 p.m. Monday and expired at 7:30 p.m.; the NWS specifically warned that water could cover roadways.
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The NWS said Avalon could be especially exposed because Hurricane Polo’s swell was expected to arrive from a more southeasterly direction than the swell from Hurricane Marie, which had damaged homes in Dana Point, Long Beach and Malibu earlier in the month.
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In the Bay Area, up to 1.2 feet of seawater inundation was possible along some low-lying shorelines and tidal waterways. High tides were forecast to peak around 1 p.m. Monday and shift later each day, reaching about 3 p.m. Thursday.
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The Bay Area forecast called for occasional waves to spill over parts of San Francisco’s Embarcadero and other low-lying shorelines, but forecasters said winds were not expected to be strong enough to push seawater far inland.
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