Seasonal surge event graphs show the number of events in which surge exceeded the 99th and 99.9th percentile hourly surge for more than one hour.
Maximum seasonal surge graphs show the largest hourly surge that occurred during each season.
The identification of storm surge events is described in DeGaetano (2007).
 
99th percentile surge events (surges > 1.61 ft)
99.9th percentile surge events (surges > 2.76 ft)
The linear trend of seasonal extreme surge events with time