Flood Watch

Redondo Beach, WA

Day 1: 2024-12-15

CATEGORY 3

WHAT Minor coastal flooding possible. Conditions are close to a flood event, but significant damage is unlikely.

WHEN From 5:00 AM to 7:00 AM PST.

IMPACTS Possible minor flooding in low-lying areas near shorelines and tidal waterways. Some localized road closures could occur.

ADDITIONAL DETAILS...

Forecast Reasoning:

Step 1: Assess Barometric Pressure The barometric pressure is approximately 1018 hPa during the high tide at 5:48 AM, which is higher than in previous severe flood events. This suggests stable weather conditions and a lower likelihood of extreme flooding.

Step 2: Evaluate Tide Height The tide height peaks at approximately 20.6 feet, higher than the historical Category 3 event but below the levels observed in higher category events. This indicates a moderate risk for flooding.

Step 3: Consider Wind Direction and Speed The wind speed is around 8 mph from the south (188 degrees). This is less severe than in higher category events, suggesting a minimal impact on potential flooding.

Step 4: Integrate NOAA High Tide Flooding Likelihood NOAA's forecast indicates a high flood likelihood with a 9.5% chance and a distance to threshold of -0.59 meters. This is slightly higher than the historical Category 3 event, signaling moderate concern.

Step 5: Synthesize Information and Forecast Flood Category Given the higher barometric pressure, significant tide height, and NOAA's flood likelihood, the assessment indicates a Category 3 flood potential for Day 1. While flooding is close to occurring, major property damage is unlikely.


Day 2: 2024-12-16

CATEGORY 3

WHAT Minor coastal flooding possible. Conditions are close to a flood event, requiring monitoring, but significant damage is unlikely.

WHEN From 6:00 AM to 8:00 AM PST.

IMPACTS Possible minor flooding in low-lying areas near shorelines and tidal waterways. Some localized road closures could occur.

ADDITIONAL DETAILS...

Forecast Reasoning:

Step 1: Assess Barometric Pressure The barometric pressure is approximately 1022 hPa during the high tide at 6:36 AM, which is higher than the pressures associated with severe flood events. This suggests less severe weather conditions.

Step 2: Evaluate Tide Height The tide height peaks at approximately 20.8 feet, slightly higher than Day 1 but still below the critical 21-foot threshold linked to significant flooding. This suggests a moderate risk.

Step 3: Consider Wind Direction and Speed The wind speed is around 5 mph from the southeast (127 degrees) at 6:00 AM. This is lower than in higher category events, indicating minimal impact from wind.

Step 4: Integrate NOAA High Tide Flooding Likelihood NOAA's forecast shows a high flood likelihood with a 15.1% chance and a distance to threshold of -0.44 meters. This is higher than Day 1 and higher than the historical Category 3 event, but due to the higher barometric pressure, the overall risk remains moderate.

Step 5: Synthesize Information and Forecast Flood Category Considering the high barometric pressure, significant but not extreme tide height, and NOAA's flood likelihood, the assessment suggests a Category 3 flood potential for Day 2.


Day 3: 2024-12-17

CATEGORY 3

WHAT Minor coastal flooding possible. Conditions are close to a flood event, requiring monitoring, but significant damage is unlikely.

WHEN From 7:00 AM to 9:00 AM PST.

IMPACTS Possible minor flooding in low-lying areas near shorelines and tidal waterways. Some localized road closures could occur.

ADDITIONAL DETAILS...

Forecast Reasoning:

Step 1: Assess Barometric Pressure The barometric pressure is approximately 1033 hPa during the high tide at 7:18 AM, significantly higher than in past severe flood events. This indicates stable weather conditions with a lower flood risk.

Step 2: Evaluate Tide Height The tide height peaks at approximately 20.7 feet, comparable to Day 1 and Day 2, and below the critical threshold of 21 feet.

Step 3: Consider Wind Direction and Speed The wind speed is around 3 mph from the east (93 degrees) at 6:00 AM, indicating minimal impact on flooding potential.

Step 4: Integrate NOAA High Tide Flooding Likelihood NOAA's forecast indicates a high flood likelihood with a 15.7% chance and a distance to threshold of -0.43 meters, similar to Day 2.

Step 5: Synthesize Information and Forecast Flood Category Given the very high barometric pressure, moderate tide height, and NOAA's forecast, the assessment indicates a Category 3 flood potential for Day 3.


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.