Redondo Beach, WA
CATEGORY 3
WHAT Minor coastal flooding expected. Possible inundation of up to 0.28 feet above ground level near shorelines and low-lying areas.
*WHEN From 7:00 AM to 8:00 PM PST.
IMPACTS Minor flooding of low-lying areas, parks, and roads. Isolated road closures possible.
The barometric pressure during the high tides is significantly higher than the threshold that has historically indicated severe flooding (1028.7 hPa and 1030.8 hPa vs. historical events <= 1006.1 hPa). The tide levels are not reaching the heights seen in past Category 4 or 5 events, nor is the NOAA flood likelihood percent as high as in the historical Category 3 event (21.5% and 26.3% vs. 8.4%). Wind direction data is not available, but given the high barometric pressure and moderate NOAA flood likelihood, the risk remains at a Category 3 level for potential minor coastal flooding without significant property damage.
CATEGORY 3
WHAT Continued risk of minor coastal flooding with potential for up to 0.2 feet above ground level inundation in susceptible areas.
WHEN From 7:00 AM to 8:00 PM PST.
IMPACTS Persistent minor flooding in low elevation coastal zones and potential for sporadic road closures.
The barometric pressure remains high (1030.5 hPa and 1028 hPa) compared to historical severe flood events, suggesting less severe weather conditions and a lower likelihood of extreme flooding. NOAA's flood likelihood for this day is slightly higher than the previous day but still below the historical Category 3 event threshold. Without significant deviation from Day 1's conditions, the flood risk category remains at a level 3.
CATEGORY 4
WHAT Elevated risk of coastal flooding with potential property impact due to higher tide levels and lower barometric pressure.
WHEN From approximately 8:00 AM to 9:00 PM PST, coinciding with high tide events.
IMPACTS Increased likelihood of flooding causing property damage, especially in low-lying coastal areas and regions with poor drainage.
On this day, the barometric pressure drops significantly to around 1018.3 hPa during high tides, which is closer to the thresholds seen in historical Category 4 events (<=1002 hPa). Although still higher than past severe events, this decrease in pressure combined with NOAA's high flood likelihood percent (25.2%) warrants an increase in the flood risk category to level 4. It's important to note that while this categorization indicates a heightened risk compared to previous days, it does not reach the severity of historical Category 5 events.
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 that may be issued.