Flood Watch

Redondo Beach, WA

Day 1: 2025-09-18

CATEGORY 2

WHAT
No significant flooding is expected. Although tides will approach moderate levels near 19.2 ft, the barometric pressure remains relatively high around 1016 hPa, and NOAA’s flood likelihood is 0%. These factors indicate no substantial flood risk.

WHEN
Peak tide is expected around 3:30 PM to 4:00 PM PDT on 2025-09-18.

IMPACTS
No flooding concerns anticipated. Marine conditions should remain normal; coastal roads and low-lying areas are not expected to flood based on current data.

ADDITIONAL DETAILS...

• Tides near 19 ft have historically been more concerning mostly when accompanied by lower barometric pressure (<1000 hPa).
• Compared to historical Category 3 or 4 flood events, the barometric pressure here is considerably higher, and NOAA’s analysis indicates negligible flood probability.
• All available indicators suggest conditions will stay well below typical flood thresholds.


Day 2: 2025-09-19

CATEGORY 2

WHAT
No significant flooding is expected. Peak tides once again near 19.2 ft coincide with pressure around 1017-1018 hPa, which remains relatively high. NOAA continues to predict 0% flood likelihood.

WHEN
Highest risk window during high tide around 4:00 PM PDT on 2025-09-19.

IMPACTS
No likely impact to shoreline infrastructure. Low-lying areas remain safe under these conditions, and normal marine activities should be unaffected.

ADDITIONAL DETAILS...

• Although the tide is moderately high, the lack of lower atmospheric pressure (far above 992.8 hPa) reduces flood risk significantly.
• Historical records show severe events usually involve lower pressure or significantly higher tidal heights (>20 ft).
• NOAA’s “Low” likelihood corroborates no threat of overland flooding for this day.


Day 3: 2025-09-20

CATEGORY 2

WHAT
No significant flooding is expected. Predicted tide heights hover near 19.1 ft, with barometric pressure above 1017 hPa. NOAA’s reported flood likelihood remains 0%, indicating minimal risk.

WHEN
Highest water levels expected mid-afternoon, around 4:30 PM PDT on 2025-09-20.

IMPACTS
No flooding impacts anticipated. Coastal and low-lying areas are not expected to see any water inundation under these conditions.

ADDITIONAL DETAILS...

• Conditions are similar to Days 1 and 2, with moderately high tide but no accompanying low-pressure system.
• In comparison with past Category 3+ events (e.g., tides above 20 ft or low pressure near 1000 hPa), these forecasts do not rise to concerning thresholds.
• NOAA data confirms a negligible chance of coastal flooding.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for any updates. Those living in areas prone to flooding should continue to follow guidance from local authorities and be prepared to take action should conditions unexpectedly change.

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.