Flood Watch

Redondo Beach, WA

DayInfo1: Day 1: 2025-01-09

CATEGORY 1

WHAT No risk of flooding. Normal tidal and weather conditions expected.

WHEN Throughout the day on January 9, 2025.

IMPACTS No impacts anticipated. Regular coastal activities can proceed as usual.

ADDITIONAL DETAILS...

Step 1: Assess Barometric Pressure

• The barometric pressure during the high tides is significantly high.
• At the first high tide (2025-01-09 02:06), the Mean Pressure MSL is 1032.97 hPa.
• At the second high tide (2025-01-09 21:42), the Mean Pressure MSL is 1036.84 hPa.
• These values are much higher than those observed during historical flooding events, indicating stable atmospheric conditions.

Step 2: Evaluate Tide Height

• The maximum tide height is approximately 19.982 ft at 11:36 AM.
• This is lower than the tide heights associated with historical Category 3 and above flood events (which exceed 20 ft).

Step 3: Consider Wind Direction and Speed

• Wind speeds are low, ranging from 2 to 6 kmph (1 to 4 mph).
• Wind directions are primarily from the NNE to ENE.
• These wind conditions are not conducive to exacerbating flood risk.

Step 4: Integrate NOAA High Tide Flooding Likelihood

• NOAA's Flood Likelihood is Low, with a likelihood percent of 0.7%.
• The distance to the flood threshold is -1.19 m, indicating that water levels are significantly below levels that could cause flooding.

Step 5: Synthesize Information and Forecast Flood Category

• Given the high barometric pressure, moderate tide heights, low wind speeds, and NOAA's low flooding likelihood, the flood potential is categorized as Category 1, representing no risk of flooding.

DayInfo2: Day 2: 2025-01-10

CATEGORY 1

WHAT No risk of flooding. Normal tidal and weather conditions expected.

WHEN Throughout the day on January 10, 2025.

IMPACTS No impacts anticipated. Regular coastal activities can proceed as usual.

ADDITIONAL DETAILS...

Step 1: Assess Barometric Pressure

• The barometric pressure remains high during high tides.
• At the first high tide (2025-01-10 03:24), the Mean Pressure MSL is 1036.13 hPa.
• At the second high tide (2025-01-10 12:36), the Mean Pressure MSL is 1034.55 hPa.
• These pressures are well above the thresholds associated with increased flood risk.

Step 2: Evaluate Tide Height

• The maximum tide height is approximately 19.683 ft at 12:36 PM.
• This tide height is below historical flooding thresholds and does not pose a flooding risk.

Step 3: Consider Wind Direction and Speed

• Wind speeds are low, around 4 kmph (2 mph).
• Wind direction at high tide is from the SW (224 degrees).
• These conditions are unlikely to contribute to coastal flooding.

Step 4: Integrate NOAA High Tide Flooding Likelihood

• NOAA's Flood Likelihood is Low, with a likelihood percent of 0.1%.
• The distance to the flood threshold is -1.55 m, indicating safe water levels.

Step 5: Synthesize Information and Forecast Flood Category

• Considering stable atmospheric conditions, moderate tide heights, minimal wind impact, and a low NOAA flood likelihood, the flood potential remains at Category 1.

DayInfo3: Day 3: 2025-01-11

CATEGORY 1

WHAT No risk of flooding. Normal tidal and weather conditions expected.

WHEN Throughout the day on January 11, 2025.

IMPACTS No impacts anticipated. Regular coastal activities can proceed as usual.

ADDITIONAL DETAILS...

Step 1: Assess Barometric Pressure

• Barometric pressure is slightly lower but still high.
• At the first high tide (2025-01-11 04:24), the Mean Pressure MSL is 1030.12 hPa.
• At the second high tide (2025-01-11 13:30), the Mean Pressure MSL is 1028.56 hPa.
• These pressures are above the levels associated with severe weather conditions.

Step 2: Evaluate Tide Height

• The maximum tide height is approximately 19.405 ft at 1:30 PM.
• This is below the critical thresholds observed in historical flood events.

Step 3: Consider Wind Direction and Speed

• Wind speeds are moderate, around 7 kmph (4 mph).
• Wind direction is from the S (182 degrees).
• Wind conditions are not expected to have a significant impact on tidal levels.

Step 4: Integrate NOAA High Tide Flooding Likelihood

• NOAA's Flood Likelihood is Low, with a likelihood percent of 0.1%.
• The distance to the flood threshold is -1.56 m, suggesting ample safety margins.

Step 5: Synthesize Information and Forecast Flood Category

• With relatively high barometric pressure, moderate tide heights, minimal wind effects, and low NOAA flood likelihood, the flood potential is assessed as Category 1.

PA: 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.