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Grand Rapids, MI
 
 
 Point Forecast: 10NM SW South Haven MI
 42.26N 86.41W (Elev. 577 ft)
Last Update: 9:04 pm EDT Aug 20, 2018
Tabular Forecast
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Weather ElementsMarine WeatherProbabilistic Forecasts (Experimental)
Description | Survey
Temperature (°F)
Dewpoint (°F)
Heat Index (°F)

Surface Wind  
Sky Cover (%)
Precipitation Potential (%)
Relative Humidity (%)

Rain
Thunder
Fog
Wave Hght (ft)-Direction
Wave Period (s)
Freezing Spray
Quantitative Precipitation     info
    0.100.250.501.00
Snowfall     info
    0.1in1in3in6in12in

48-Hour Period Starting:       Forward 2 Days  

Date08/2008/21
Hour (EDT)222300010203040506070809101112131415161718192021
Surface Wind (kt)1414131211121313106346910111318232626251919
Wind DirEESEESEESEESESESSSWSSEESESESSWSWWNWNNWNNWNNWNNWNNWNNWNNWNNW
Gust2329333331
Wave Height (ft) 111111121111111234578887
Wave Period (sec) 2 2 2 2 2 2 2 2 3 3 2 2 2 2 3 3 4 5 6 6 7 8 8 8
Wave Direction (°)90100110110100120160210220220220220220230250270300320330340340340340340

Date08/22
Hour (EDT)222300010203040506070809101112131415161718192021
Surface Wind (kt)181818171717171717161616151515141414151514131110
Wind DirNNNNNNNNNNNNNNNNNNWNNWNNWNNWNNWNNWNNWNNW
Gust2222
Wave Height (ft) 777777777777666555544443
Wave Period (sec) 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 7 7 7 7 6 6 6 6
Wave Direction (°)340340340340340340330330330330330330330330330340340340340330330330330340

Radar and Satellite (Click for larger image)
Link to Local Radar Data Link to Satellite Data
Additional Forecasts and Information
International System of UnitsForecast Discussion
Marine Point ForecastHourly Weather Graph
National Marine ForecastsTide Information
Area Forecast MatricesLocal Climatology
Daily Climate (Grand Rapids)Tabular State Forecast
Daily Climate (Lansing)Hazardous Weather Outlook
Daily Climate (Muskegon)7 Day Forecast
Lakes & Rivers (AHPS)Nearshore Forecast
Regional Weather RoundupRegional Temp/Precip Table

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