Redondo Beach, WA
CATEGORY 3
WHAT Minor coastal flooding expected. Possible inundation of up to 0.5 feet above ground level near shorelines and low-lying areas.
*WHEN From 07:00 AM to 09:00 AM PST.
IMPACTS Minor flooding of low-lying areas, parks, and roads. Isolated road closures possible.
The barometric pressure is significantly higher than the threshold associated with previous flood events, suggesting less severe weather conditions. However, the high tide at 08:00 with a mean pressure MSL of 1030.25 hPa, although not as low as in past significant flooding events, still warrants attention due to the proximity to historical minor flood conditions. The NOAA Flood Likelihood Analysis indicates a high likelihood of flooding at 6.4%, which is close to the historical Category 3 event on 12/27/2023. Wind direction is not provided but should be monitored for changes that could influence tidal surges.
CATEGORY 4
WHAT Coastal flooding likely with potential for property damage in vulnerable areas.
WHEN From 08:00 AM to 10:00 AM PST and potentially near the next high tide at 10:12 PM PST.
IMPACTS Flooding of properties especially in low-lying areas, with possible road closures and disruptions to local infrastructure.
The mean pressure MSL at the morning high tide is lower than on Day 1, at 1024.56 hPa, approaching the threshold that has historically led to more significant flooding events. The evening high tide coincides with a further reduced mean pressure MSL of 1013.05 hPa, which is very close to the Category 4 event on 01/07/2022. This suggests an increased risk of flooding similar to or greater than a Category 4 event, particularly if winds are from the W/NW as they can push more water ashore.
CATEGORY 5
WHAT High likelihood of significant coastal flooding and property damage.
WHEN Highest risk near high tides at approximately 09:12 AM and again around the evening high tide at 06:18 PM PST.
IMPACTS Significant flooding expected with potential for major property damage, especially in areas that are typically vulnerable to storm surges and high tides.
The barometric pressure during both high tides is at a critical low of 1005.25 hPa, which is lower than any pressure observed during previous Category 4 events and approaching the Category 5 event on 12/27/2022. This strongly suggests a severe risk for extensive coastal flooding, particularly if accompanied by strong winds from critical directions such as W/NW.
Residents 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.