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Realtime Great Lakes Weather Data and Marine Observations

 GSLM4: NWS GravellyShoalsMI                                  
CMAN Station
Lat: 44.02°, Lon: -83.54°
Elevation: 179 m
Anemometer Height: 25 m
Related Site: NDBC

Current Time: 2247 GMT
Station Types
(Click on name to view all stations for that type)
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Lt Blue MarkerBuoys
Red MarkerCMAN & USCG Stations
Yellow MarkerShip Reports
Green MarkerSurface Airways Stations

  Change Units to: English | Metric
 Enter New DOY (001-366):  Or Today (168)
 (See also Tables for determining DOY for a given date)
View multiple days of data for this station:
Select Year and Day of Year (DOY) range:
Year (4-digits):   First Day (001-366):   Last Day (001-366):  
Additional Data Archive: NDBC Historical Data

Metadata | Description of Measurements (NDBC)
All 9s in field = missing data 

                                       Change Units to English | Metric
                         AIR   DEW WND  WND  WND CLD SOLAR   BAR    WAT  WAV  WAV
-------GMT-              TMP   PT  DIR  SPD  GST CVR  RAD    PRES   TMP  HGT  PER
YYYYDDDHHMM#ID            F     F  Deg  kts  kts  %   W/m2   inHg    F    ft   s
202516800001GSLM4   29  71.4 999.9  70  8.0  9.9 999 9999.9  29.93 99.9 99.9 99.9
202516800101GSLM4   29  73.2 999.9  90  8.9  9.9 999 9999.9  29.92 99.9 99.9 99.9
202516800201GSLM4   29  73.9 999.9 100  9.9 12.1 999 9999.9  29.92 99.9 99.9 99.9
202516800301GSLM4   29  71.1 999.9 100  9.9 12.1 999 9999.9  29.92 99.9 99.9 99.9
202516800401GSLM4   29  70.7 999.9 100  8.0 11.1 999 9999.9  29.92 99.9 99.9 99.9
202516800501GSLM4   29  70.2 999.9 100  6.0  8.9 999 9999.9  29.92 99.9 99.9 99.9
202516801001GSLM4   29  71.4 999.9 120  9.9  9.9 999 9999.9  29.92 99.9 99.9 99.9
202516801101GSLM4   29  74.3 999.9 120 13.0 14.0 999 9999.9  29.92 99.9 99.9 99.9
202516801201GSLM4   29  74.7 999.9 110 13.0 14.0 999 9999.9  29.92 99.9 99.9 99.9
202516801301GSLM4   29  73.8 999.9 120 13.0 13.0 999 9999.9  29.92 99.9 99.9 99.9
202516801401GSLM4   29  75.0 999.9 120 14.0 14.0 999 9999.9  29.92 99.9 99.9 99.9
202516802001GSLM4   29  75.6 999.9 120 14.0 15.0 999 9999.9  29.92 99.9 99.9 99.9
202516802101GSLM4   29  74.8 999.9 120 13.0 15.0 999 9999.9  29.92 99.9 99.9 99.9
202516802201GSLM4   29  74.1 999.9 120 14.0 14.0 999 9999.9  29.92 99.9 99.9 99.9
202516802301GSLM4   29  73.2 999.9 120 14.0 14.0 999 9999.9  29.91 99.9 99.9 99.9
202516802401GSLM4   29  73.2 999.9 120 14.0 15.0 999 9999.9  29.91 99.9 99.9 99.9
202516802501GSLM4   29  73.0 999.9 120 14.0 15.0 999 9999.9  29.91 99.9 99.9 99.9
202516803001GSLM4   29  71.6 999.9 120 12.1 14.0 999 9999.9  29.91 99.9 99.9 99.9
202516803101GSLM4   29  70.9 999.9 120 11.1 12.1 999 9999.9  29.91 99.9 99.9 99.9
202516803201GSLM4   29  70.0 999.9 110  9.9 11.1 999 9999.9  29.91 99.9 99.9 99.9
202516803301GSLM4   29  69.4 999.9 110  9.9  9.9 999 9999.9  29.91 99.9 99.9 99.9
202516803401GSLM4   29  70.3 999.9 120 13.0 13.0 999 9999.9  29.91 99.9 99.9 99.9
202516803501GSLM4   29  70.5 999.9 120 13.0 14.0 999 9999.9  29.91 99.9 99.9 99.9
202516804001GSLM4   29  70.0 999.9 120 12.1 14.0 999 9999.9  29.91 99.9 99.9 99.9
202516804101GSLM4   29  69.3 999.9 130 13.0 14.0 999 9999.9  29.91 99.9 99.9 99.9
202516804201GSLM4   29  68.7 999.9 130 13.0 14.0 999 9999.9  29.91 99.9 99.9 99.9
202516804301GSLM4   29  68.4 999.9 130 13.0 14.0 999 9999.9  29.91 99.9 99.9 99.9
202516804401GSLM4   29  68.0 999.9 130 13.0 14.0 999 9999.9  29.91 99.9 99.9 99.9
202516804501GSLM4   29  67.6 999.9 130 11.1 13.0 999 9999.9  29.91 99.9 99.9 99.9
202516805001GSLM4   29  67.5 999.9 140 11.1 11.1 999 9999.9  29.92 99.9 99.9 99.9
202516805101GSLM4   29  68.0 999.9 140 13.0 13.0 999 9999.9  29.91 99.9 99.9 99.9
202516805201GSLM4   29  68.5 999.9 140 13.0 14.0 999 9999.9  29.91 99.9 99.9 99.9
202516805301GSLM4   29  68.4 999.9 140 15.0 15.9 999 9999.9  29.91 99.9 99.9 99.9
202516805401GSLM4   29  68.0 999.9 140 15.0 15.9 999 9999.9  29.90 99.9 99.9 99.9
202516805501GSLM4   29  67.6 999.9 140 15.0 15.9 999 9999.9  29.90 99.9 99.9 99.9
202516806001GSLM4   29  67.5 999.9 140 15.0 15.9 999 9999.9  29.89 99.9 99.9 99.9
202516806101GSLM4   29  67.3 999.9 140 15.0 15.9 999 9999.9  29.89 99.9 99.9 99.9
202516806201GSLM4   29  66.9 999.9 140 14.0 15.0 999 9999.9  29.89 99.9 99.9 99.9
202516806301GSLM4   29  66.9 999.9 140 15.0 15.0 999 9999.9  29.88 99.9 99.9 99.9
202516806401GSLM4   29  67.1 999.9 140 15.0 15.9 999 9999.9  29.88 99.9 99.9 99.9
202516806501GSLM4   29  66.9 999.9 150 15.0 15.9 999 9999.9  29.88 99.9 99.9 99.9
202516807001GSLM4   29  67.1 999.9 150 15.0 15.9 999 9999.9  29.88 99.9 99.9 99.9
202516807101GSLM4   29  67.1 999.9 150 15.0 15.9 999 9999.9  29.88 99.9 99.9 99.9
202516807201GSLM4   29  66.9 999.9 150 14.0 15.0 999 9999.9  29.88 99.9 99.9 99.9
202516807301GSLM4   29  66.9 999.9 150 14.0 15.0 999 9999.9  29.87 99.9 99.9 99.9
202516807401GSLM4   29  66.7 999.9 150 13.0 14.0 999 9999.9  29.87 99.9 99.9 99.9
202516808001GSLM4   29  66.6 999.9 150 13.0 15.0 999 9999.9  29.87 99.9 99.9 99.9
202516808101GSLM4   29  66.6 999.9 150 12.1 14.0 999 9999.9  29.87 99.9 99.9 99.9
202516808201GSLM4   29  66.6 999.9 150 13.0 13.0 999 9999.9  29.87 99.9 99.9 99.9
202516808301GSLM4   29  66.4 999.9 160 12.1 14.0 999 9999.9  29.87 99.9 99.9 99.9
202516808401GSLM4   29  66.6 999.9 160 12.1 14.0 999 9999.9  29.87 99.9 99.9 99.9
202516808501GSLM4   29  66.7 999.9 160 13.0 13.0 999 9999.9  29.86 99.9 99.9 99.9
202516809001GSLM4   29  66.6 999.9 160 11.1 13.0 999 9999.9  29.86 99.9 99.9 99.9
202516809101GSLM4   29  66.6 999.9 160  9.9 12.1 999 9999.9  29.87 99.9 99.9 99.9
202516809201GSLM4   29  67.1 999.9 160 12.1 13.0 999 9999.9  29.87 99.9 99.9 99.9
202516809301GSLM4   29  67.1 999.9 160 12.1 13.0 999 9999.9  29.87 99.9 99.9 99.9
202516809401GSLM4   29  66.9 999.9 160 13.0 14.0 999 9999.9  29.86 99.9 99.9 99.9
202516809501GSLM4   29  66.6 999.9 150 12.1 13.0 999 9999.9  29.86 99.9 99.9 99.9
202516810001GSLM4   29  66.6 999.9 160 11.1 13.0 999 9999.9  29.86 99.9 99.9 99.9
202516810101GSLM4   29  66.4 999.9 150 11.1 11.1 999 9999.9  29.85 99.9 99.9 99.9
202516810201GSLM4   29  66.4 999.9 150 11.1 12.1 999 9999.9  29.85 99.9 99.9 99.9
202516810301GSLM4   29  66.6 999.9 150 13.0 13.0 999 9999.9  29.84 99.9 99.9 99.9
202516810401GSLM4   29  66.7 999.9 150 13.0 14.0 999 9999.9  29.84 99.9 99.9 99.9
202516810501GSLM4   29  66.7 999.9 150 13.0 14.0 999 9999.9  29.85 99.9 99.9 99.9
202516811001GSLM4   29  66.9 999.9 150 14.0 15.0 999 9999.9  29.85 99.9 99.9 99.9
202516811101GSLM4   29  66.9 999.9 150 13.0 14.0 999 9999.9  29.85 99.9 99.9 99.9
202516811201GSLM4   29  66.7 999.9 150 13.0 14.0 999 9999.9  29.85 99.9 99.9 99.9
202516811301GSLM4   29  66.6 999.9 150 13.0 14.0 999 9999.9  29.85 99.9 99.9 99.9
202516811401GSLM4   29  66.4 999.9 150 13.0 14.0 999 9999.9  29.84 99.9 99.9 99.9
202516811501GSLM4   29  66.2 999.9 150 13.0 15.0 999 9999.9  29.84 99.9 99.9 99.9
202516812001GSLM4   29  66.2 999.9 150 13.0 14.0 999 9999.9  29.84 99.9 99.9 99.9
202516812101GSLM4   29  66.6 999.9 160 13.0 14.0 999 9999.9  29.84 99.9 99.9 99.9
202516812201GSLM4   29  66.6 999.9 160 15.0 15.9 999 9999.9  29.84 99.9 99.9 99.9
202516812301GSLM4   29  67.1 999.9 150 13.0 15.0 999 9999.9  29.84 99.9 99.9 99.9
202516812401GSLM4   29  67.6 999.9 150 12.1 15.0 999 9999.9  29.84 99.9 99.9 99.9
202516812501GSLM4   29  67.8 999.9 160 15.0 15.9 999 9999.9  29.83 99.9 99.9 99.9
202516813001GSLM4   29  68.0 999.9 150 12.1 15.9 999 9999.9  29.83 99.9 99.9 99.9
202516813101GSLM4   29  68.2 999.9 150  8.9 13.0 999 9999.9  29.83 99.9 99.9 99.9
202516813201GSLM4   29  68.4 999.9 150  8.9 12.1 999 9999.9  29.83 99.9 99.9 99.9
202516813301GSLM4   29  68.4 999.9 150  5.1  8.9 999 9999.9  29.83 99.9 99.9 99.9
202516813401GSLM4   29  68.5 999.9 160  4.1  6.0 999 9999.9  29.83 99.9 99.9 99.9
202516813501GSLM4   29  68.0 999.9 190  1.9  5.1 999 9999.9  29.83 99.9 99.9 99.9
202516814001GSLM4   29  67.5 999.9 200  5.1  6.0 999 9999.9  29.83 99.9 99.9 99.9
202516814101GSLM4   29  67.5 999.9 210  8.0  8.9 999 9999.9  29.83 99.9 99.9 99.9
202516814201GSLM4   29  67.8 999.9 190  1.9  8.9 999 9999.9  29.82 99.9 99.9 99.9
202516814301GSLM4   29  68.7 999.9 140  4.1  5.1 999 9999.9  29.82 99.9 99.9 99.9
202516814401GSLM4   29  69.1 999.9 160  4.1  6.0 999 9999.9  29.82 99.9 99.9 99.9
202516814501GSLM4   29  69.3 999.9 130  4.1  6.0 999 9999.9  29.82 99.9 99.9 99.9
202516815001GSLM4   29  69.4 999.9 130  5.1  7.0 999 9999.9  29.82 99.9 99.9 99.9
202516815101GSLM4   29  70.3 999.9  80  4.1  8.0 999 9999.9  29.82 99.9 99.9 99.9
202516815201GSLM4   29  70.5 999.9 120  5.1  8.9 999 9999.9  29.83 99.9 99.9 99.9
202516815301GSLM4   29  71.2 999.9  80  4.1  8.0 999 9999.9  29.82 99.9 99.9 99.9
202516815401GSLM4   29  70.9 999.9  90  5.1 11.1 999 9999.9  29.82 99.9 99.9 99.9
202516815501GSLM4   29  71.4 999.9 120  7.0 12.1 999 9999.9  29.82 99.9 99.9 99.9
202516816001GSLM4   29  72.1 999.9  50  2.9 11.1 999 9999.9  29.82 99.9 99.9 99.9
202516816101GSLM4   29  73.6 999.9 150 15.0 15.9 999 9999.9  29.81 99.9 99.9 99.9
202516816201GSLM4   29  74.1 999.9 150 15.9 16.9 999 9999.9  29.81 99.9 99.9 99.9
202516816301GSLM4   29  74.7 999.9 150 15.9 16.9 999 9999.9  29.81 99.9 99.9 99.9
202516816401GSLM4   29  74.7 999.9 120  9.9 18.1 999 9999.9  29.81 99.9 99.9 99.9
202516816501GSLM4   29  73.9 999.9 110  6.0 14.0 999 9999.9  29.80 99.9 99.9 99.9
202516817001GSLM4   29  74.5 999.9  30  4.1 14.0 999 9999.9  29.80 99.9 99.9 99.9
202516817101GSLM4   29  75.0 999.9 160 15.0 15.9 999 9999.9  29.80 99.9 99.9 99.9
202516817201GSLM4   29  76.1 999.9 160 16.9 16.9 999 9999.9  29.80 99.9 99.9 99.9
202516817301GSLM4   29  76.5 999.9 160 15.0 16.9 999 9999.9  29.80 99.9 99.9 99.9
202516817401GSLM4   29  76.6 999.9 160 15.0 16.9 999 9999.9  29.79 99.9 99.9 99.9
202516817501GSLM4   29  77.2 999.9 160 15.9 15.9 999 9999.9  29.78 99.9 99.9 99.9
202516818001GSLM4   29  77.2 999.9 150 15.9 15.9 999 9999.9  29.78 99.9 99.9 99.9
202516818101GSLM4   29  77.7 999.9 160 15.9 16.9 999 9999.9  29.78 99.9 99.9 99.9
202516818201GSLM4   29  78.1 999.9 150 15.0 18.1 999 9999.9  29.78 99.9 99.9 99.9
202516818301GSLM4   29  78.6 999.9 150 13.0 16.9 999 9999.9  29.77 99.9 99.9 99.9
202516818401GSLM4   29  78.3 999.9 150 15.9 18.1 999 9999.9  29.76 99.9 99.9 99.9
202516818501GSLM4   29  77.5 999.9  90  5.1 19.0 999 9999.9  29.77 99.9 99.9 99.9
202516819001GSLM4   29  78.8 999.9  60  5.1 16.9 999 9999.9  29.76 99.9 99.9 99.9
202516819101GSLM4   29  78.1 999.9  60  5.1 19.0 999 9999.9  29.76 99.9 99.9 99.9
202516819201GSLM4   29  77.4 999.9 110  8.9 16.9 999 9999.9  29.75 99.9 99.9 99.9
202516819301GSLM4   29  77.5 999.9 110  8.0 18.1 999 9999.9  29.75 99.9 99.9 99.9
202516819401GSLM4   29  78.1 999.9  90  7.0 18.1 999 9999.9  29.74 99.9 99.9 99.9
202516819501GSLM4   29  79.2 999.9  80  4.1  9.9 999 9999.9  29.74 99.9 99.9 99.9
202516820001GSLM4   29  79.2 999.9 150 11.1 15.9 999 9999.9  29.74 99.9 99.9 99.9
202516820101GSLM4   29  78.4 999.9  80  6.0 15.0 999 9999.9  29.73 99.9 99.9 99.9
202516820201GSLM4   29  78.1 999.9 110  8.0 15.9 999 9999.9  29.73 99.9 99.9 99.9
202516820301GSLM4   29  79.3 999.9  70  5.1 15.9 999 9999.9  29.72 99.9 99.9 99.9
202516820401GSLM4   29  79.3 999.9  60  4.1  9.9 999 9999.9  29.72 99.9 99.9 99.9
202516820501GSLM4   29  78.8 999.9 120  4.1  9.9 999 9999.9  29.72 99.9 99.9 99.9
202516821001GSLM4   29  79.0 999.9 160  4.1  8.0 999 9999.9  29.72 99.9 99.9 99.9
202516821101GSLM4   29  78.6 999.9 170  2.9  8.0 999 9999.9  29.72 99.9 99.9 99.9
202516821201GSLM4   29  78.1 999.9 180  1.9  7.0 999 9999.9  29.72 99.9 99.9 99.9
202516821301GSLM4   29  78.6 999.9 190  1.9  6.0 999 9999.9  29.72 99.9 99.9 99.9
202516821401GSLM4   29  80.2 999.9 190  4.1  8.0 999 9999.9  29.72 99.9 99.9 99.9
  New Graph (click on parameter):                                      
  at | dp | wd | ws | wg | cc | sr | bp | wt | wvh | wvp
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  [every 3rd data value plotted]
129 matching elements
0.036 sec
This Web page created and maintained by Greg Lang, NOAA/GLERL,
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