LS 242
Active Advisory: (US Severe Weather)
Forecast as of 10:59 am EDT on May 21, 2013
Small Craft Advisory in effect through Wednesday afternoon
Ontonagon To Upper Entrance Of Portage Canal Mi-
Rest Of Today
Northeast winds 10 to 15 knots. Areas of fog. Numerous rain showers and isolated thunderstorms becoming scattered early this afternoon. Waves 3 to 6 feet.
Tonight
Northeast winds 10 to 15 knots. Patchy fog. A slight chance of thunderstorms through midnight. A chance of rain showers. Waves 3 to 5 feet.
Wednesday
Northeast winds 10 to 15 knots. Patchy fog through early afternoon. A chance of rain showers through early afternoon...then a slight chance of rain showers by mid afternoon. Waves subsiding to 1 to 3 feet.
Wednesday Night
Northeast winds 10 to 20 knots. Partly cloudy through midnight then decreasing clouds. Waves building to 3 to 5 feet.
Small Craft Advisory
Statement as of 11:02 AM EDT on May 21, 2013

... Small Craft Advisory remains in effect until 6 PM EDT
Wednesday...

A Small Craft Advisory remains in effect until 6 PM EDT
Wednesday.

* Wind and waves during the small craft advisory: expect
sustained winds of up to 16 knots from the northeast... with
gusts up to 17 knots. The largest expected significant waves
will be 5 feet with a maximum wave height of up to 8 feet
possible.

* Timing: the maximum winds are expected around 11 am EDT
Tuesday with the largest waves expected around 11 am EDT
Tuesday.

Please see the latest marine forecasts for more detailed
information.

Precautionary/preparedness actions...

A Small Craft Advisory means that wind speeds of 22 to 33 knots
are expected to produce hazardous wave conditions to small craft.
Inexperienced mariners... especially those operating smaller
vessels should avoid navigating in these conditions.





Marine Map
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Buoys / Water Temps Wave Heights
Marine Weather Map
Global Marine Zone Map
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Waters within five nautical miles of shore on Lake Superior
Waters within five nautical miles of shore
Waters beyond five nautical miles of shore on Lake Superior
Waters within five nautical miles of shore on lakes Huron... Michigan and Superior
Waters beyond five nautical miles of shore on Lake Michigan
Lake Huron forecast beyond five nautical miles from shore
Marine & Boating
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Coastal Water Temperatures
Place Temperature
No Stations Reporting
Open Sea Buoy Information
Place ID Sea Temp Wave Height
Portage Canal 45023 56 °F 18.04 ft
W SUPERIOR 48NM North of Ironwood, MI 45006 35 °F 9.19 ft
MID SUPERIOR 60NM North Northeast Hancock, MI 45001 36 °F 6.23 ft
Click the Station ID for daily observations and history.
C-MAN Station Information
Place ID Water Temp Wave Height
Rock of Ages, MI ROAM4
-
-
Passage Island, MI PILM4
-
-
Devils Island, WI DISW3
-
-
Stannard Rock, MI STDM4
-
-

NOT FOR NAVIGATION. DO NOT RELY ON THIS DATA FOR DECISIONS THAT CAN RESULT IN HARM TO ANYONE OR ANYTHING.