A Coastal Flood Advisory has been issued by the National Weather Service (NWS) for the Northern Humboldt Coast, California, due to forecasted high astronomical tides. This advisory alerts residents to potential minor flooding conditions resulting from the combination of onshore winds and tidal fluctuations.
The advisory, which will be effective from 9 AM to 1 PM PST on Sunday, predicts tides reaching between 9.0 and 9.3 feet Mean Lower Low Water (MLLW) at the North Spit tide gauge. This tidal rise will be associated with the high tide expected at 10:42 AM PST, with saltwater inundation anticipated one to two hours before and after this peak time.
According to the NWS, "Flooding of low-lying areas around Humboldt Bay including parks and roads with only isolated closures expected. Flooding will likely impact Jackson Ranch Road in the Arcata Bottoms and several roads in King Salmon." These waters threaten to enter parks and roads, raising concerns for local officials about accessibility and safety.
The coastal community is reminded of the definition of Feet Above Ground, which as noted by the NWS, refers to the height above the Highest Astronomical Tide. Residents should prepare for the possibility of uptick flooding, as high tides coupled with strong winds create conditions ripe for inundation.
During flooding events, safety becomes the priority. The NWS urges residents living or camping near flood-prone areas to seek higher ground immediately if conditions worsen. They recommend securely locking homes if evacuations are necessary and disconnecting utilities if time allows. The agency warns against entering basements or any low rooms where electrical outlets could be submerged, as well as against wading through floodwaters—stressing, "Refrain from entering water with potential electric currents and avoid walking through floods altogether."
Unfortunately, whether on the road or at home, flooding can catch people off guard. The NWS emphasizes the importance of recognizing even small amounts of moving water can be dangerous; just six inches can knock someone off their feet. If individuals find themselves trapped by swiftly moving water, they should find the highest possible position and contact emergency services immediately.
Driving safety is also highlighted, especially during rainfall when flood risks are elevated. Drivers are advised to turn on headlights even during the day to improve visibility, and to carefully avoid puddles and low areas on the road where water accumulates. They should not risk entering flooded zones; if confronted with floods, making a U-turn is often the safest option.
During heavy rain, hydroplaning becomes more of a risk for drivers. This dangerous situation occurs when water collects under the tires faster than the vehicle can push it away, causing the vehicle to lift and lose traction. To help maintain control, drivers are advised to ease off the accelerator, steer gently to recover control, and brake appropriately when necessary.
With the Coastal Flood Advisory underway, residents of the Northern Humboldt Coast are encouraged to stay vigilant. The NWS continues to monitor conditions closely and extends its guidance to residents, fostering greater awareness and preparation for potential flooding challenges.
