It produces a 0.14 second white flash every five seconds, with a nominal range of and power of 2,500 kilocandelas. Since April 1978 in addition to being operated during darkness, the light is also used during poor visibility. In 1974 the explosive fog signal was replaced with an electric fog horn producing four blasts every minute at 300 hertz with a nominal range of . Following a review of navigational aids, the fog signal was permanently shut down on 11 January 2011. The Racon—radar transponder beacon—has been a morse G on the radar display since its installation in 1994.