Redondo Beach, WA
CATEGORY 3
WHAT
Tides will peak near 19.77 ft around 9:30 PM with a barometric pressure of approximately 1001 hPa. Expect water to approach flood thresholds in low-lying coastal areas, though widespread damaging floods are not anticipated.
WHEN
Highest concern around the evening high tide (roughly 8 PM to 11 PM).
IMPACTS
Minor inundation could affect roads and parking areas along the immediate shoreline. Isolated standing water in low spots is possible, but significant property damage is unlikely.
• The barometric pressure of ~1001 hPa, though relatively low, is higher than in past severe flood events (e.g., ~992 hPa or lower).
• The tide height near 19.77 ft is substantial but below the 20+ ft levels typically associated with more severe Category 4 or 5 events.
• Compared to historical Category 3 events (e.g., 17.46 ft at 1006.1 hPa or ~20.68 ft at 1020.47 hPa), the tidal height and relatively lower barometric pressure place Day 1 firmly in Category 3 territory, indicating close monitoring but no expectation of critical damage.
CATEGORY 3
WHAT
High tide near 19.80 ft is expected around 10 PM, with barometric pressure ~999.5 hPa. Conditions will be similar to Day 1, with a slightly lower barometric pressure but still below the threshold typically causing major flooding.
WHEN
Peak water levels and stronger onshore push from approximately 9 PM to midnight.
IMPACTS
Minor flooding in very low-lying or poorly drained areas is possible. Though water may move closer to flood thresholds, substantial property damage is not expected.
• Historic comparisons suggest that, while the pressure is moderately low, the tide height remains under 20 ft.
• Prior Category 4 events have usually seen tides exceeding 20 ft or barometric pressure well below ~993 hPa.
• Thus, Day 2 remains a Category 3 event: close to flooding, warranting caution, but unlikely to result in major impacts.
CATEGORY 4
WHAT
Evening tides could reach approximately 19.81 ft around 10:30 PM, with barometric pressure dropping near 993.8 hPa. These conditions are more conducive to flooding than the previous two days, raising the likelihood of moderate coastal inundation.
WHEN
Highest water levels between roughly 9 PM and midnight.
IMPACTS
Flooding of low-lying roads, parking lots, and beaches is likely. While major property damage is not certain, water may encroach farther inland than on Days 1 and 2, especially in areas with poor drainage or no protective barriers.
• Historic Category 4 events (e.g., 19.25 ft tide with ~992.8 hPa) are similar to this day’s forecast.
• Although the tide is still below 20 ft, the barometric pressure is near the historically significant ~992 hPa mark, which has coincided with moderate flooding in the past.
• Expect water to exceed typical minor flood boundaries and watch for some shoreline erosion or localized impacts to ground-level structures.
You 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.
Categories 1-2: No risk of flooding.
Category 3: Close to a flood event and worth monitoring.
Category 4: Flooding is likely however, it is uncertain if this will cause major property damage.
Category 5: Likely to flood and cause property damage.
Categories 6-7: Extremely high risk of flooding and property damage.