Flood Watch

Redondo Beach, WA

Day 1: 2024-08-25

CATEGORY 2

WHAT Minor coastal flooding expected. Possible inundation of up to 1 foot above ground level near shorelines and low-lying areas.

*WHEN From 04:42 AM to 08:42 PM PST.

IMPACTS Minor flooding of low-lying areas, parks, and roads. Isolated road closures possible.

ADDITIONAL DETAILS...

On August 25th, the high tide at 04:42 AM is expected to reach a height of approximately 14.033 feet with a barometric pressure of 1004.85 hPa. The second high tide at 08:42 PM will reach around 17.335 feet with a barometric pressure of 1006.30 hPa. These conditions are similar to the Category 3 event on 12/27/2023 but with slightly higher pressure, reducing the flood risk. Wind speeds are relatively low, and NOAA's flood likelihood is low at 0.0%.

Day 2: 2024-08-26

CATEGORY 2

WHAT Minor coastal flooding expected. Possible inundation of up to 1 foot above ground level near shorelines and low-lying areas.

WHEN From 06:00 AM to 11:18 AM PST.

IMPACTS Minor flooding of low-lying areas, parks, and roads. Isolated road closures possible.

ADDITIONAL DETAILS...

On August 26th, the high tide at 06:00 AM is expected to reach a height of approximately 11.999 feet with a barometric pressure of 1006.35 hPa. The second high tide at 11:18 AM will reach around 17.002 feet with a barometric pressure of 1009.38 hPa. These conditions are similar to the Category 3 event on 12/27/2023 but with higher pressure, reducing the flood risk. Wind speeds are relatively low, and NOAA's flood likelihood is low at 0.0%.

Day 3: 2024-08-27

CATEGORY 2

WHAT Minor coastal flooding expected. Possible inundation of up to 1 foot above ground level near shorelines and low-lying areas.

WHEN From 01:12 PM to 10:36 PM PST.

IMPACTS Minor flooding of low-lying areas, parks, and roads. Isolated road closures possible.

ADDITIONAL DETAILS...

On August 27th, the high tide at 01:12 PM is expected to reach a height of approximately 17.681 feet with a barometric pressure of 1009.42 hPa. The second high tide at 10:36 PM will reach around 17.246 feet with a barometric pressure of 1009.42 hPa. These conditions are similar to the Category 3 event on 12/27/2023 but with higher pressure, reducing the flood risk. Wind speeds are relatively low, and NOAA's flood likelihood is low at 0.0%.

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.

Forecast Reasoning:

Step-by-Step Analysis:

  1. Assess Barometric Pressure:
  2. All three days have barometric pressures well above the critical threshold of <=992.8 hPa.

  3. This significantly reduces the likelihood of severe weather conditions leading to major flooding.

  4. Evaluate Tide Height:

  5. Tide heights range from approximately ~14 feet to ~17 feet.

  6. These heights are lower than historical severe flood events (e.g., Category 5 event on 12/27/2022 with >22 feet).

  7. Consider Wind Direction and Speed:

  8. Wind speeds are relatively low across all three days.

  9. Wind directions do not align with historical severe flood events that had significant wind impact.

  10. Integrate NOAA High Tide Flooding Likelihood:

  11. NOAA's forecast indicates a very low likelihood (0%) for all three days.

  12. This further supports a lower flood risk categorization.

  13. Synthesize Information and Forecast Flood Category:

  14. Given the high barometric pressures, moderate tide heights, low wind speeds, and NOAA's low flood likelihood forecast, all three days are categorized as Category 2.
  15. This indicates minor coastal flooding potential without significant property damage or severe impacts.

By following this methodical approach, we ensure an accurate and transparent assessment based on the provided data and historical comparisons.