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 that indicates severe weather conditions and potential flooding. The high tide at 08:00 with a mean pressure MSL of 1030.18994140625 hPa is well above the historical event thresholds that led to more severe flooding. However, NOAA's Flood Likelihood Analysis indicates a high likelihood of flooding at 6.4%, which should not be ignored. The tide height is not provided, but the distance to the threshold is -0.41m, which suggests that the tide level is below the flooding threshold. Wind direction is not specified for this day, but historical data shows that winds from the W/NW can exacerbate flood conditions.
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 around the time of the second high tide near 10:12 PM PST.
IMPACTS Flooding of properties especially in low-lying areas, with possible road closures and disruptions to daily activities.
The barometric pressure during the first high tide is lower than on Day 1 but still above the historical thresholds for severe flooding events. However, by the second high tide at 22:12, the mean pressure MSL drops to 1012.6500244140625 hPa, nearing the threshold that increases the likelihood of flooding significantly. This drop in pressure combined with high tides could lead to more severe flooding similar to past Category 4 events. NOAA's Flood Likelihood Analysis indicates a low likelihood of flooding at 0.5%, but given the proximity to critical pressure levels, vigilance is warranted.
CATEGORY 5
WHAT High risk of significant coastal flooding and property damage.
WHEN Highest risk around high tides at approximately 09:12 AM and again at 06:18 PM PST.
IMPACTS Significant flooding expected with substantial property damage potential, road closures, and impacts on infrastructure and transportation.
The barometric pressure on Day 3 drops further to a mean pressure MSL of 1005.1699829101562 hPa during both high tides, which is below the threshold observed in historical Category 4 events and approaching Category 5 event levels. This low pressure, combined with high tides, presents a very high risk for significant coastal flooding. NOAA's Flood Likelihood Analysis does not indicate a likelihood percentage for this day; however, given the critical pressure readings and comparison with past events, a Category 5 flood event is forecasted.
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.