Redondo Beach, WA
CATEGORY 3
WHAT Minor coastal flooding possible due to higher than normal tide levels.
WHEN From 1:00 PM to 3:00 PM PST on October 28, 2024.
IMPACTS Minor flooding of low-lying areas and shorelines may occur. No significant property damage is expected.
Step 1: Assess Barometric Pressure The barometric pressure during the high tide at 2:12 AM is 1015.96 hPa, and at 2:36 PM it is 1016.82 hPa. This is significantly higher than the pressures observed during historical severe flood events, which were below 1002 hPa for Category 4 and 5 events. The high pressure indicates less severe weather conditions.
Step 2: Evaluate Tide Height The maximum tide height on this day is approximately 18.769 ft at 2:00 PM, which is higher than the historical Category 3 event (17.460 ft) but lower than Category 4 events. This suggests a moderate increase in flood potential.
Step 3: Consider Wind Direction and Speed Wind speeds are low, around 8 kmph (5 mph) from the southwest during peak tide times. This is less impactful compared to historical events with higher wind speeds contributing to flooding.
Step 4: Integrate NOAA High Tide Flooding Likelihood NOAA's forecast indicates a low flood likelihood with a 0.0% chance and a significant distance to the flood threshold (-2.34m). This supports the assessment of a lower flood risk.
Step 5: Synthesize Information and Forecast Flood Category Considering the high barometric pressure, moderate tide heights, low wind speeds, and NOAA's low flood likelihood, the flood potential is categorized as Category 3. This indicates conditions are close to a flood event and worth monitoring but are unlikely to cause flood damage.
CATEGORY 3
WHAT Minor coastal flooding possible due to elevated tide levels.
WHEN From 1:30 PM to 3:30 PM PST on October 29, 2024.
IMPACTS Minor flooding in low-lying coastal areas may occur. Significant property damage is not expected.
Step 1: Assess Barometric Pressure The barometric pressure at the time of the high tide at 2:54 PM is 1020.90 hPa, which is considerably higher than pressures associated with historical flooding events. This high pressure suggests stable and less severe atmospheric conditions.
Step 2: Evaluate Tide Height The peak tide height reaches approximately 18.840 ft at 2:54 PM, similar to Day 1 and above the historical Category 3 event. However, it remains below the levels of Category 4 and 5 events.
Step 3: Consider Wind Direction and Speed Wind speeds are low, around 9 kmph (6 mph) from the south during the peak tide period. These wind conditions are not likely to exacerbate flooding risks.
Step 4: Integrate NOAA High Tide Flooding Likelihood NOAA's flood likelihood remains low with a 0.0% chance and a distance to the flood threshold of -2.33m. This reinforces the assessment of a low flooding risk.
Step 5: Synthesize Information and Forecast Flood Category Given the very high barometric pressure, moderate tide heights, light winds, and NOAA's assessment, the flood potential is categorized as Category 3. This indicates that while conditions approach those of a flood event, the likelihood of flood damage is low.
CATEGORY 3
WHAT Minor coastal flooding possible due to sustained high tide levels.
WHEN From 2:00 PM to 4:00 PM PST on October 30, 2024.
IMPACTS Possible minor flooding in low-lying coastal and shoreline areas. No significant property damage is anticipated.
Step 1: Assess Barometric Pressure The barometric pressure during the high tide at 3:12 PM is 1019.89 hPa. This is significantly higher than pressures recorded during historical severe flooding events, indicating less severe atmospheric conditions.
Step 2: Evaluate Tide Height The maximum tide height is approximately 18.745 ft at 3:00 PM, consistent with the previous two days and above the historical Category 3 event. However, it is still below the heights associated with higher-category flood events.
Step 3: Consider Wind Direction and Speed Wind speeds are low, around 5 kmph (3 mph) from the southwest during peak tide times. These light winds are unlikely to contribute significantly to flooding risk.
Step 4: Integrate NOAA High Tide Flooding Likelihood NOAA's forecast continues to indicate a low flood likelihood with a 0.0% chance and a distance to the flood threshold of -2.40m, suggesting minimal flooding risk.
Step 5: Synthesize Information and Forecast Flood Category Considering the high barometric pressure, consistent tide heights, light winds, and NOAA's low flood likelihood, the flood potential remains at Category 3. Conditions should be monitored, but significant flooding is unlikely.
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.