Flood Watch

Redondo Beach, WA

Day 1: 2025-07-17

CATEGORY 3

WHAT
Tide levels are expected to reach nearly 20 feet in the late evening, paired with moderately low barometric pressure around 1005 hPa. While these factors bring conditions close to a coastal flood event, no significant flooding or damage is anticipated.

WHEN
The period of highest concern is around the late evening high tide near 9:45 PM – 10:00 PM local time.

IMPACTS
Minor nuisance flooding along very low-lying or poorly drained coastal areas is possible. Widespread impacts or property damage are not expected under these conditions.

ADDITIONAL DETAILS...

• NOAA’s official flood likelihood is 0%, indicating low risk of a significant flood.
• Compared with past Category 3 events where tides reached similar levels (17–20 feet) but with variable pressure, these conditions are in line with being “close to a flood event” without likely causing serious issues.
• Winds are relatively light and are not expected to exacerbate coastal surge significantly.


Day 2: 2025-07-18

CATEGORY 3

WHAT
High tides may approach 19.7 feet by late evening, with barometric pressure around 1002 hPa. These readings remain below the thresholds usually associated with more serious flood events.

WHEN
Peak conditions between roughly 9:30 PM and 10:30 PM local time.

IMPACTS
Minor ponding or shallow flooding in the most vulnerable coastal spots. Overall impact to infrastructure or property is unlikely.

ADDITIONAL DETAILS...

• NOAA’s flood likelihood remains at 0% for this date.
• Historical Category 4 events typically involved tides exceeding 20 ft, often with much lower pressure (< 992 hPa). This forecast stays below those levels.
• Winds remain moderate, reducing additional push of ocean water toward the shoreline.


2025-07-19

CATEGORY 3

WHAT
Evening and early overnight tides could reach around 19.4 ft, with barometric pressure nearing 1000 hPa. Although somewhat lower pressure, overall conditions do not align with major flooding thresholds.

WHEN
Elevated tides expected from about 9:30 PM to shortly after 11:00 PM local time.

IMPACTS
Low-lying locations near the coastline could see minor water encroachment. Broad-scale floods or property damage are not anticipated.

ADDITIONAL DETAILS...

• Official NOAA data indicates 0% likelihood of coastal flooding.
• Tide levels are below the 21 ft benchmark often observed in more serious flood events, and while the pressure is lower than the prior two days, it is not close to the historical extreme low pressures that have contributed to higher flood categories.
• Light onshore winds do not suggest significant wave setup or added coastal flood risk.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

CATEGORY KEY

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.