Redondo Beach, WA
CATEGORY 3
WHAT Minor coastal flooding expected. Possible inundation of up to 1 foot above ground level near shorelines and low-lying areas.
*WHEN From 6:00 AM to 9:00 AM PST.
IMPACTS Minor flooding of low-lying areas, parks, and roads. Isolated road closures possible.
The barometric pressure is forecasted to be around 996 hPa during high tides, which is higher than the threshold of 992.8 hPa that significantly increases the likelihood of flooding. However, it is still relatively low and should be monitored. The tide levels are expected to be high but not exceeding the historical flood event thresholds significantly. Wind direction is from the north, which may not contribute as much to pushing seawater towards the coast as westerly or northwesterly winds would. NOAA's Flood Likelihood Analysis indicates a low likelihood of flooding for this date.
CATEGORY 4
WHAT Coastal flooding likely with potential for property damage in vulnerable areas.
WHEN From 3:00 PM to 6:00 PM PST.
IMPACTS Flooding of coastal properties, roads, and infrastructure expected. Residents should prepare for potential evacuations and protect property.
The barometric pressure is forecasted to drop below the critical threshold of 992.8 hPa during high tides, reaching as low as approximately 993 hPa. This is coupled with high tide levels that are approaching those seen in historical Category 4 events. The wind direction is not provided, but if it were from the W/NW as in past events, it could exacerbate the flood risk. NOAA's Flood Likelihood Analysis still indicates a low likelihood of flooding, but given the pressure and tide data, there is a heightened risk compared to Day 1.
CATEGORY 5
WHAT Severe coastal flooding expected with significant property damage likely.
WHEN From 4:00 PM to 7:00 PM PST.
IMPACTS Extensive flooding with significant property damage likely. Evacuations may be necessary, and emergency services should be on high alert.
The barometric pressure is forecasted to be significantly lower than the threshold at approximately 990 hPa during high tides, which are also at levels that have historically led to Category 5 events. The combination of extremely low pressure and high tide levels presents a very high risk of severe flooding. Wind direction data is not provided; however, if winds are from the W/NW, this would further increase the risk. NOAA's Flood Likelihood Analysis maintains a low likelihood rating; however, given the extreme pressure readings and high tide levels, this day presents the highest risk of severe flooding among the three days analyzed.
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 follow any evacuation orders or safety instructions provided by emergency services.