Redondo Beach, WA
CATEGORY 3
WHAT... The high tides expected on December 19, 2023, do not reach the historical flood event thresholds seen in previous Category 4 events. The mean pressure MSL, which is above 1037 hPa during both high tides, is significantly higher than the historical barometric reference for Category 4 floods (<=1002 hPa). The weather data indicates light rain with a low chance of sunshine and moderate cloud cover, which suggests limited additional impact on flood risk from precipitation.
WHEN... Given the high-pressure system and moderate high tide levels, the risk of flooding is lower compared to historical Category 4 events. However, localized flooding cannot be ruled out due to potential rain and existing tidal conditions.
Despite the lower barometric pressure on this day compared to the historical Category 4 events, it remains well above the threshold that typically signals a significant risk of flooding. NOAA's flood likelihood analysis indicates a high likelihood percentage (5.6%), which supports a heightened awareness for potential flooding but does not suggest imminent severe flooding.
CATEGORY 2
WHAT... The forecast for December 20, 2023, shows high tides with Mean Pressure MSL at approximately 1033 hPa during the peak tide. This pressure reading is still higher than historical Category 4 event thresholds but indicates a slightly increased risk of flooding compared to December 19. The weather data predicts clear skies with no significant contribution from precipitation to flood risk.
WHEN... The clear weather conditions and barometric pressure readings higher than historical Category 4 events suggest a low to moderate likelihood of flooding. NOAA's higher likelihood percentage of flooding (6.3%) warrants attention but does not align with immediate severe flooding concerns.
The absence of significant rainfall and elevated barometric pressure reduce the odds of coastal flooding. Even though NOAA indicates a high likelihood percentage for this day, the absence of contributory weather conditions such as strong winds from W/NW or heavy rainfall diminishes the risk compared to historical events.
CATEGORY 1
WHAT... On December 21, 2023, the Mean Pressure MSL of approximately 1032 hPa during both high tides is close to the conditions observed on December 20 but still much higher than catastrophic flood-inducing pressure levels. There are no extreme weather conditions forecasted that could exacerbate tidal influences.
WHEN... Given the stable barometric readings above critical thresholds and the absence of severe weather indicators, this day presents a low likelihood of flooding. NOAA's analysis also reflects a low likelihood percentage (4.6%), suggesting minimal flood risk.
Weather and tide data indicate that conditions are not analogous to historical high-risk floods at Redondo Beach, WA. The barometric pressure remains stable and relatively high, which when combined with NOAA's low likelihood percentage reinforces the minimal flood risk projection for this day.
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. Always consult with local authorities or experts for final decision-making in flood-related situations.