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Round Island Passage Light

Location: Straits of Mackinac near Mackinac Island, MI
Source: Flickr Creative Commons

Local Marine Forecast.

There are no active watches, warnings or advisories 

Latest Condiitions.

About Round Island Passage Light

The location of the light is Straits of Mackinac. The nearest city is Mackinac Island, MI. The station was first established in 1948. The current lighthouse was first lit in 1948.

The tower has a flashing red light at a focal plane height of 71 ft above mean high water. The light has a nominal range of 14 nautical miles. The light has a period of 5 seconds.

Open to the Public?: No    Active?: Yes

Identification number: 7-12580 (U.S.)

A 'flashing' light is a light in which the total duration of light in a period is shorter than the total duration of darkness and the appearances of light (flashes) are usually of equal duration. So in the 5 second period, the light is on for less than 2.5 then off for more than 2.5.

Round Island Passage Light was listed on the National Register of Historic Places on Aug. 7, 2013, reference number 13000583.

Photo by: Conal Gallagher
Source: Flickr Creative Commons
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