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Grand Island Harbor Rear Range Light

Location: Grand Island Harbor near Munising, MI

Source: USBeacons

About Grand Island Harbor Rear Range Light


The location of the light is Grand Island Harbor. The nearest city is Munising, MI. The station was first established in 1868. The current lighthouse was first lit in 1914.

The lighthouse is a conical steel tower on a concrete foundation.

The tower had a flashing white light at a focal plane height of 64 ft above mean high water. The light had a nominal range of 15 nautical miles. The tower height is 70 ft. The light had a period of 2.5 seconds.

Open to the Public?: Grounds Only    Active?: No

Identification number: 14600 (U.S.)

The tower is painted black on the bottom and white on the top. In 1969 the light was deactivated.

Also known as the Bay Furnace Range Lights.

Also known as the Christmas Range Lights or the Christmas Light.

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 2.5 second period, the light is on for less than 1.25 then off for more than 1.25.

Grand Island Harbor Rear Range Light is listed on the National Register of Historic Places, reference number 90000906.

Source: USBeacons

Today's Conditions on Site

Astronomical Info.

Astronomical Dawn: 6:39 am
Sunrise: 8:26 am
Sunset: 5:30 pm
Astronomical Dusk: 7:17 pm

Local Marine Forecast.

There are no active watches, warnings or advisories 

Additional Conditions.

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