Redondo Beach, WA
CATEGORY 3
WHAT
Tides near 19.5–19.8 ft early in the day, coupled with moderately low barometric pressure (around 1002–1007 hPa), could bring water levels close to minor flood thresholds. However, significant property damage is not expected.
WHEN
Primary concern near the high tide around 02:00–03:00 (with the lower barometric pressure), and again in the late afternoon around 17:30.
IMPACTS
Minor inundation of low-lying roads and coastal walkways is possible. Brief or localized pooling of water near the shoreline may occur, but widespread damage is unlikely.
Historical Category 3 events in this area have shown comparable tide heights (17–20 ft) and similar or slightly higher barometric pressures. The slightly lower atmospheric pressure (~1002 hPa) at the first high tide does increase the chance of minor flooding, but the tide itself remains below more critical thresholds (>20 ft).
CATEGORY 4
WHAT
A higher tide near 20.1 ft in the early evening under moderately low barometric pressure (~1008 hPa) makes flooding likely, though it is not anticipated to be severe.
WHEN
Peak concern is around 18:00–19:00, coinciding with the day’s highest tide.
IMPACTS
Expect moderate flooding in vulnerable areas along the coast. Low-lying roads and parking areas could experience brief inundation, and minor disruptions are possible.
When compared with historical data, similar or slightly higher tide levels (20+ ft) with moderately low pressure have produced moderate flooding (Category 4) in the past. Although the barometric pressure is not extremely low, the combination with a 20+ ft tide height suggests a likely flood event, but major property damage is not expected.
CATEGORY 4
WHAT
Tides may reach around 20.2 ft in the early evening. Barometric pressure data at that time is not precisely available, but based on the downward trend observed earlier in the day, conditions could again favor moderate coastal flooding.
WHEN
The highest risk window is roughly from 18:00–20:00, aligning with the day’s peak tide.
IMPACTS
Additional moderate flooding of low-lying shoreline areas is possible, with similar impacts to roads, parks, and public access points near the water.
Although the exact barometric pressure during the highest tide is unknown, historical patterns suggest it may remain low enough (around 1003–1005 hPa) to enhance flood potential with a 20+ ft tide. As with Day 2, significant structural damage is unlikely, but moderate flooding should be anticipated.
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.