HEADING: Flood Watch

Redondo Beach, WA

DayInfo1: Day 1: 2024-12-18

CATEGORY 3

WHAT Minor coastal flooding possible. Inundation of up to 1 foot above ground level near shorelines and low-lying areas may occur.

WHEN From 06:00 AM to 08:00 AM PST.

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

ADDITIONAL DETAILS...

Step 1: Assess Barometric Pressure The barometric pressure is 1034.51 hPa, which is significantly higher than in previous severe flood events (e.g., the Category 4 event on 12/18/2024 had a pressure of 1016.1 hPa). This high pressure suggests stable weather conditions, reducing the likelihood of severe flooding.

Step 2: Evaluate Tide Height The tide height is expected to reach 20.586 feet at 07:54 AM, matching the historical Category 4 event. High tides of this magnitude increase the risk of coastal flooding.

Step 3: Consider Wind Direction and Speed Wind speeds are forecasted to reach up to 19 mph from the south (wind directions ranging from 176° to 209°) in the early morning hours. This is slightly lower than in previous higher category events, indicating a moderate impact on potential flooding.

Step 4: Integrate NOAA High Tide Flooding Likelihood NOAA's forecast indicates a high likelihood of flooding with a score of 10.0%. This is comparable to the historical Category 4 event, suggesting a potential for minor flooding.

Step 5: Synthesize Information and Forecast Flood Category Considering the high barometric pressure, significant tide height, and NOAA's high flood likelihood, the flood category is assessed as Category 3. While minor flooding is possible, severe flooding is unlikely due to the mitigating effect of the high barometric pressure.


DayInfo2: Day 2: 2024-12-19

CATEGORY 2

WHAT No significant risk of flooding expected.

WHEN No flooding anticipated.

IMPACTS No flooding impacts anticipated. Normal conditions expected.

ADDITIONAL DETAILS...

Step 1: Assess Barometric Pressure The barometric pressure is 1029.28 hPa during the high tide at 06:48 PM, which is higher than pressures observed during historical flood events, indicating stable weather conditions.

Step 2: Evaluate Tide Height The maximum tide height is projected to be 20.205 feet at 08:00 AM, slightly lower than on Day 1 and below the levels of historical significant events.

Step 3: Consider Wind Direction and Speed Wind speeds are forecasted to be gentle, reaching up to 10 mph with variable directions predominantly from the southeast. The lower wind speeds reduce the impact on tidal flooding.

Step 4: Integrate NOAA High Tide Flooding Likelihood NOAA's forecast indicates a low flood likelihood of 3.5%, significantly lower than in historical flood events, suggesting minimal risk.

Step 5: Synthesize Information and Forecast Flood Category Given the stable barometric pressure, moderate tide heights, low wind speeds, and NOAA's low flood likelihood, the flood category is assessed as Category 2. No substantial flood risk is expected.


DayInfo3: Day 3: 2024-12-20

CATEGORY 1

WHAT No risk of flooding expected.

WHEN No flooding anticipated.

IMPACTS No flooding impacts anticipated. Normal conditions expected.

ADDITIONAL DETAILS...

Step 1: Assess Barometric Pressure The barometric pressure is 1026.83 hPa, maintaining a high level that indicates stable and calm weather conditions.

Step 2: Evaluate Tide Height The maximum tide height is expected to be 20.090 feet at 09:00 AM, lower than the previous days and below historical flooding thresholds.

Step 3: Consider Wind Direction and Speed Wind speeds are forecasted to be light, around 7 mph, with wind directions varying. This minimal wind activity suggests a negligible impact on tidal conditions.

Step 4: Integrate NOAA High Tide Flooding Likelihood NOAA's flood likelihood is low at 1.4%, indicating a minimal chance of flooding occurrences.

Step 5: Synthesize Information and Forecast Flood Category Considering the combination of high barometric pressure, lower tide heights, minimal wind speeds, and low flood likelihood, the flood category is assessed as Category 1. There is no risk of flooding anticipated.


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.