Redondo Beach, WA
CATEGORY 2
WHAT Minor coastal flooding expected. Possible inundation of up to 0.5 feet above ground level near shorelines and low-lying areas.
*WHEN From 3:00 PM to 8:00 PM PST.
IMPACTS Minor flooding of low-lying areas, parks, and roads. Isolated road closures possible.
The barometric pressure readings for the high tides on this day are significantly higher than the threshold that has historically indicated severe flooding events. The pressure readings of 1013.4 hPa and 1013.9 hPa during high tides are well above the critical threshold of 992.8 hPa. The NOAA flood likelihood is also low, with a 0.0% chance of flooding, which supports the prediction of a lower category event. However, the wind direction from the W/NW could contribute to water levels rising near the shorelines, hence the Category 2 rating.
CATEGORY 3
WHAT Elevated risk of coastal flooding. Potential for water levels to reach up to 1 foot above ground level in some areas.
WHEN From midnight to midday PST.
IMPACTS Increased flooding of low-lying areas and roads, with some property damage possible due to proximity to high tide levels.
On this day, the barometric pressure during high tide drops to 1012.4 hPa at midnight and further to a concerning level of 1004.9 hPa at midday, which is closer to historical flood event pressures. The NOAA flood likelihood remains low; however, given the significant drop in pressure and its proximity to historical events that caused more severe flooding, a Category 3 rating is warranted.
CATEGORY 4
WHAT Likely flooding with potential for significant property damage in vulnerable areas.
WHEN From early morning through afternoon PST.
IMPACTS Likely flooding of properties, especially those that are not elevated or protected against rising water levels. Road closures and disruptions to daily activities expected.
The barometric pressure on this day is forecasted to be at a mean sea level pressure of 1007.7 hPa during the early morning high tide and drops slightly to 1005.75 hPa by midday. These readings are within the range of past Category 4 events, indicating a substantial risk for flooding especially when combined with high tide levels over 16 feet. The wind direction is not specified but given the historical data showing significant flooding with similar pressures, a Category 4 rating is appropriate.
Residents and businesses near shorelines and low-lying areas should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. Consult local authorities or experts for final decision-making in flood-related situations and adhere to any evacuation orders or safety instructions provided by emergency services.