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 01:30 AM to 02:00 AM PST.
IMPACTS Minor flooding of low-lying areas, parks, and roads. Isolated road closures possible.
The barometric pressure is forecasted to be above the threshold associated with significant flooding events, suggesting less severe weather conditions. However, the high tide at 01:48 with a mean pressure MSL of 1010.3 hPa, although not as low as historical flooding events, still warrants attention due to the proximity to the threshold. The wind direction is not provided but should be monitored if it comes from the W/NW as it can contribute to water levels rising. Comparing with historical data, particularly the event on 12/17/2022, the risk of high-tide flooding is present but not expected to cause major property damage.
CATEGORY 4
WHAT Coastal flooding likely with potential for property damage in vulnerable areas.
WHEN From 02:00 AM to 02:30 AM PST and again around midday from 12:00 PM to 12:30 PM PST.
IMPACTS Likely flooding of roads, homes, and businesses in low-lying coastal areas. Some property damage possible, especially in areas with poor drainage or inadequate flood defenses.
The barometric pressure is significantly lower on this day, reaching a mean pressure MSL of 1006.2 hPa during the early morning high tide and dropping further to 1004.8 hPa around midday. This is closer to the threshold that has historically led to flooding events in Redondo Beach, WA. The tide height is not reaching the levels seen in Category 5 events but is still substantial enough, combined with the lower pressure, to increase the risk of flooding.
CATEGORY 5
WHAT Significant coastal flooding expected with high likelihood of property damage.
WHEN From 05:00 PM to 06:00 PM PST.
IMPACTS Major flooding anticipated in coastal and low-lying areas with significant property damage likely. Road closures and disruptions to local infrastructure are possible.
On this day, the barometric pressure drops further to a mean pressure MSL of 1001.2 hPa during the evening high tide, which is within the range associated with previous Category 5 events. This low pressure combined with high tide levels poses a serious risk for significant flooding and property damage similar to the event on 12/27/2022. Wind direction and speed should be closely monitored as they can exacerbate the situation if coming from W/NW directions.
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 follow any evacuation orders or safety instructions provided by emergency services.