There is no longer a fog signal at this site.
A fog signal may be sounded from a separate building.
The fog signal was changed to an air whistle on October 24, 1932.
The fog signal gives a single 2 second blast every 20 seconds.
The failure to place a fog signal would have been a factor.
In 1820, Congress authorized the first fog signal at the station, a 500-pound bell, for a cost of $1,000.
The fog signal was stopped at the same time.
In 1947 the fog signal changed to an air horn.
The new fog signal is operated in the original bell house.
Several advances in the technology of fog signals were made during the 1850s.
