Common Variety of Coastal Flood Occasions per 12 months
by Debbie Mayowa
(Qatar)
Supply: EPA’s Local weather Change Indicators in america: www.epa.gov/climate-indicators
The chart under exhibits the variety of flood occasions in 4 totally different cities in america throughout 4 totally different durations.
The bar graph depicts the imply of annual flood occasions which occurred at 4 metropolis coastlines primarily based in america at 4 time durations.
Between 1950 and 1969, all cities besides San Francisco skilled a median of not less than one flood occasions at their coast yearly. Furthermore, three out of 4 US cities have related averages.
Nonetheless, the averaged variety of flood occasions per annual doubled in each Atlantic Metropolis and Washington by the second time interval, 1970-1989.
From 1990 to 2009, Atlantic Metropolis had the very best imply of shoreline flood occasions, averaging round 5 flood occasions every year, which was not less than 2.5 occasions better than that of Washington.
By the final time interval, between 2010 and 2020, all cities, excluding San Francisco, had been illustrated to have the best common of annual flood occasions. These had been not less than doubled from the earlier time interval.
In conclusion, Atlantic Metropolis skilled the most important improve of imply flood occasions per 12 months over time. Annapolis and Washington additionally had their common annual flood occasions temporally improve. However, annual flood occasions initially elevated by 1 from 1950 to 2009, however decreased again to 0 by the tip of 2020.
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