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Marine Forecast
Expires:201705010330;;520826
FZUS63 KLOT 301954
GLFLM 

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
254 PM CDT SUN APR 30 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN.

WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS, WHICH
IS THE AVERAGE OF THE HIGHEST 1/3 OF THE WAVE, ALONG WITH THE
AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL
OCCASIONALLY BE ENCOUNTERED.

.SYNOPSIS...A 30.4 INCH HIGH OVER JAMES BAY WILL WEAKEN AS IT 
CONTINUES EAST ACROSS QUEBEC. LOW PRESSURE OF 29.4 INCHES OVER 
CENTRAL KANSAS WILL DEEPEN TO 29.3 INCHES AS IT REACHES NORTHERN 
IOWA OVERNIGHT. THE LOW WILL THEN CONTINUE NORTHEAST INTO WESTERN 
QUEBEC BY TUESDAY AFTERNOON. WEAK HIGH PRESSURE OF 30.0 INCHES 
WILL DEVELOP OVER THE CENTRAL PLAINS IN THE WAKE OF THIS LOW, THEN
STRENGTHEN TO 30.3 INCHES AS IT MOVES NORTHEAST TO LAKE MICHIGAN 
BY WEDNESDAY AFTERNOON. A 29.7 INCH LOW IS FORECAST TO FORM OVER 
THE SOUTHERN MISSISSIPPI VALLEY LATE WEDNESDAY NIGHT AND DEEPEN TO
AROUND 29.2 AS IT TRACKS UP THE OHIO VALLEY TO QUEBEC THROUGH THE
END OF THIS WEEK.

LMZ761-010330-
MAFOR 3021/
MICHIGAN NORTHGale Warning -  IN EFFECT...11140 11150 12156 11246
11340 11430 11440. CHANCE OF RAIN SHOWERS EARLY THIS EVENING. 
CHANCE OF SHOWERS MONDAY. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT 
TONIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT MONDAY. 

MICHIGAN SOUTH 11140 12146 11236 12430 12440. CHANCE OF SHOWERS 
EARLY THIS EVENING...THEN CHANCE OF THUNDERSTORMS EARLY THIS 
EVENING. CHANCE OF SHOWERS MONDAY. WAVES 5 TO 8 FT OCCASIONALLY 
TO 10 FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT TONIGHT. 
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 5 TO 8 FT 
OCCASIONALLY TO 10 FT MONDAY. 

$$

JEE

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/LOT/GLFTABLE

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES



US Forecasts are Public Domain and derived from the
National Weather Service - (IWIN) and the National Oceanic Atmospheric Administration (NOAA)
Canadian forecasts are obtained from and are copyright of Environment Canada.

All weather information provided by MarineWaypoints.com should be used with caution.
We cannot guarantee that the data provided here is 100% accurate or up to date!


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