That’s because I emailed them and let them know of the error
As far as hurricanes goes the following is incorrect
strong>Hurricanes
The average number of hurricanes for the past 20 years has been 10. The largest number of hurricanes was 21 in 1933. Only one hurricane was recorded in 1890. On the average, only two typical storms each year bring hurricane force to the United States coastal areas.:::
If you go to http://www.nhc.noaa.gov/pdf/NWS-TPC-5.pd you will see on page 13 Table 7 it gives averages for # tropical storms, hurricanes, and major hurricanes for various time periods. 10 is to high for the last 20 years from 1987 to 2006. For the largest number of hurricanes in a given year go to table 8a, which shows the max number of hurricanes was 15 in 2005. Not sure where the source of 1 hurricane in 1890 came from. Table 8a has info on min activity. For the last sentence of the fact I believe it is incorrect. You would be better off saying that on average there are 5 hurricanes every 3 years which make landfall somewhere along the U.S. Gulf or Atlantic coast (page 11).