Flood Watch

Redondo Beach, WA

Day 1: 2024-12-02

CATEGORY 3

WHAT Conditions are close to a flood event and worth monitoring, but flooding is unlikely.

WHEN Highest risk around 6:36 AM PST on 2024-12-02.

IMPACTS Minor water level increases along the shoreline, with no significant flooding expected.

ADDITIONAL DETAILS...

Step 1: Assess Barometric Pressure

• The barometric pressure is 1018.13 hPa during the peak high tide, which is significantly higher than pressures observed in historical severe flood events. This indicates stable atmospheric conditions and a lower likelihood of severe weather-related flooding.

Step 2: Evaluate Tide Height

• The tide height reaches 19.949 ft at 6:36 AM, which is higher than the historical Category 3 event (17.460 ft) but lower than Category 4 events (over 21 ft). While the tide is relatively high, the absence of low barometric pressure reduces the overall flood risk.

Step 3: Consider Wind Direction and Speed

• Wind speeds are low at approximately 2 km/h from the NE (47°). This minimal wind activity is unlikely to contribute to coastal flooding conditions.

Step 4: Integrate NOAA High Tide Flooding Likelihood

• NOAA's flood likelihood is low at 0.6%, with a distance to the flood threshold of -1.26 m. This substantial gap indicates a low probability of tidal flooding.

Step 5: Synthesize Information and Forecast Flood Category

• Given the high barometric pressure, moderate tide height, low wind speeds, and NOAA's low flood likelihood, the conditions align with a Category 3 event—close to a flood event and worth monitoring but unlikely to cause flood damage.

Day 2: 2024-12-03

CATEGORY 3

WHAT Conditions are close to a flood event and worth monitoring, but flooding is unlikely.

WHEN Highest risk around 7:12 AM PST on 2024-12-03.

IMPACTS Minor coastal water level rises may occur, but significant flooding is not expected.

ADDITIONAL DETAILS...

Step 1: Assess Barometric Pressure

• The barometric pressure remains high at 1019.12 hPa during the high tide period, suggesting stable weather conditions.

Step 2: Evaluate Tide Height

• The tide height reaches 20.062 ft at 7:12 AM, slightly higher than Day 1 and the historical Category 3 event but still below the levels of Category 4 events.

Step 3: Consider Wind Direction and Speed

• Wind speeds are low, averaging around 3 km/h, with wind direction varying but not aligning with directions that historically exacerbate flooding.

Step 4: Integrate NOAA High Tide Flooding Likelihood

• NOAA's flood likelihood is low at 1.1%, with a distance to the flood threshold of -1.12 m, indicating a continued low risk of flooding.

Step 5: Synthesize Information and Forecast Flood Category

• The combination of high barometric pressure, relatively high tide, and low wind speeds supports a Category 3 classification—conditions are close to a flood event but flooding is unlikely.

Day 3: 2024-12-04

CATEGORY 3

WHAT Conditions are close to a flood event and worth monitoring, but flooding is unlikely.

WHEN Highest risk around 7:54 AM PST on 2024-12-04.

IMPACTS Slight increase in shoreline water levels; significant flooding and property damage are not anticipated.

ADDITIONAL DETAILS...

Step 1: Assess Barometric Pressure

• The barometric pressure decreases to 1011.79 hPa, which is lower than the previous days but still above the critical threshold of 992.8 hPa associated with higher flood risks.

Step 2: Evaluate Tide Height

• The tide height peaks at 20.084 ft at 7:54 AM, comparable to Day 2's levels and below historical Category 4 thresholds.

Step 3: Consider Wind Direction and Speed

• Wind speeds remain low, approximately 1-2 km/h, with varied wind directions that do not significantly influence tidal conditions.

Step 4: Integrate NOAA High Tide Flooding Likelihood

• NOAA's flood likelihood is low at 1.3%, with a distance to the flood threshold of -1.08 m, suggesting that flooding remains unlikely.

Step 5: Synthesize Information and Forecast Flood Category

• Despite the slight decrease in barometric pressure, the overall conditions—moderate tide height, low wind speeds, and low NOAA flood likelihood—indicate a Category 3 event. Monitoring is advised, but significant flooding is not expected.

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.