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 2:00 AM to 3:00 AM PST and again from 2:00 PM to 3:00 PM PST.
IMPACTS Minor flooding of low-lying areas, parks, and roads. Isolated road closures possible.
The barometric pressure during the high tides of Day 1 is significantly higher than the threshold that has historically led to severe flooding events. With pressures of 1011.4 hPa and 1012.9 hPa, the risk of flooding is lower despite the high tide levels. The NOAA Flood Likelihood Analysis indicates a low likelihood of flooding for this day, with a flood threshold distance of -2.57m, which supports the assessment of a Category 2 flood event.
CATEGORY 3
WHAT Elevated risk of coastal flooding. Potential for water levels to reach up to 1 foot above ground in some areas near the shoreline.
WHEN Around the high tide at 3:00 AM PST.
IMPACTS Increased flooding of low-lying coastal areas and roads, with possible property damage in vulnerable locations.
On Day 2, the barometric pressure drops to 1008.7 hPa during the high tide, which is closer to historical events that have caused flooding but still above the critical threshold. The NOAA Flood Likelihood Analysis maintains a low likelihood rating for this day, but given the lower pressure and high tide prediction, there is a slightly increased risk compared to Day 1, leading to a Category 3 classification.
CATEGORY 4
WHAT Likely coastal flooding with water levels expected to rise significantly above ground level in many areas along the shore.
WHEN High risk around high tides at approximately 3:18 AM PST and again at 4:00 PM PST.
IMPACTS Likely flooding of coastal properties and infrastructure with potential for moderate property damage.
Day 3 presents a more concerning scenario with barometric pressures of 1006.7 hPa and an even lower pressure of 1003.7 hPa during high tides, which are within the range of past Category 4 events. The NOAA Flood Likelihood Analysis still indicates a low likelihood; however, given the significant drop in pressure and consistent high tide levels, there is an increased risk of flooding similar to historical Category 4 events. The wind direction is not provided but considering the other factors, a Category 4 classification is warranted.
Residents and businesses near the coast 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.