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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: 1915 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 (175)
 (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            C     C  Deg  m/s  m/s  %   W/m2    mb     C    m    s
202517500001GSLM4   29  30.3 999.9 230 11.3 12.3 999 9999.9 1016.3 99.9 99.9 99.9             
202517500101GSLM4   29  30.1 999.9 230 10.3 11.8 999 9999.9 1016.3 99.9 99.9 99.9             
202517500201GSLM4   29  30.1 999.9 240 12.3 13.9 999 9999.9 1016.3 99.9 99.9 99.9             
202517500301GSLM4   29  30.3 999.9 240 12.3 12.9 999 9999.9 1016.3 99.9 99.9 99.9             
202517500401GSLM4   29  30.7 999.9 250 11.3 12.9 999 9999.9 1016.9 99.9 99.9 99.9             
202517500501GSLM4   29  31.1 999.9 250 10.8 11.8 999 9999.9 1016.9 99.9 99.9 99.9             
202517501001GSLM4   29  30.7 999.9 240  9.8 11.8 999 9999.9 1016.9 99.9 99.9 99.9             
202517501101GSLM4   29  30.6 999.9 230  9.3 10.8 999 9999.9 1017.3 99.9 99.9 99.9             
202517501201GSLM4   29  29.8 999.9 230  7.2 10.8 999 9999.9 1017.3 99.9 99.9 99.9             
202517501301GSLM4   29  28.8 999.9 230  7.2  9.3 999 9999.9 1017.3 99.9 99.9 99.9             
202517501401GSLM4   29  29.2 999.9 230  7.7  7.7 999 9999.9 1017.3 99.9 99.9 99.9             
202517501501GSLM4   29  28.1 999.9 220  7.7  7.7 999 9999.9 1017.3 99.9 99.9 99.9             
202517502001GSLM4   29  29.0 999.9 220  7.7  7.7 999 9999.9 1017.6 99.9 99.9 99.9             
202517502101GSLM4   29  29.2 999.9 210  8.7  8.7 999 9999.9 1017.3 99.9 99.9 99.9             
202517502201GSLM4   29  29.7 999.9 210  8.7  9.3 999 9999.9 1017.3 99.9 99.9 99.9             
202517502301GSLM4   29  29.8 999.9 220  7.7  8.7 999 9999.9 1017.6 99.9 99.9 99.9             
202517502401GSLM4   29  28.9 999.9 220  7.2  8.2 999 9999.9 1017.6 99.9 99.9 99.9             
202517502501GSLM4   29  28.1 999.9 220  7.2  7.2 999 9999.9 1017.6 99.9 99.9 99.9             
202517503001GSLM4   29  27.2 999.9 210  5.7  6.7 999 9999.9 1017.6 99.9 99.9 99.9             
202517503101GSLM4   29  27.4 999.9 210  7.2  7.7 999 9999.9 1017.3 99.9 99.9 99.9             
202517503201GSLM4   29  27.7 999.9 210  8.2  8.7 999 9999.9 1017.6 99.9 99.9 99.9             
202517503301GSLM4   29  27.7 999.9 210  8.7  8.7 999 9999.9 1017.3 99.9 99.9 99.9             
202517503401GSLM4   29  27.9 999.9 210  8.2  8.7 999 9999.9 1017.6 99.9 99.9 99.9             
202517503501GSLM4   29  27.4 999.9 210  6.7  8.7 999 9999.9 1017.9 99.9 99.9 99.9             
202517504001GSLM4   29  26.5 999.9 210  7.2  7.7 999 9999.9 1017.9 99.9 99.9 99.9             
202517504101GSLM4   29  26.6 999.9 210  8.2  8.2 999 9999.9 1017.9 99.9 99.9 99.9             
202517504201GSLM4   29  26.7 999.9 210  8.2  9.3 999 9999.9 1017.9 99.9 99.9 99.9             
202517504301GSLM4   29  26.3 999.9 210  7.2  8.2 999 9999.9 1018.3 99.9 99.9 99.9             
202517504401GSLM4   29  26.4 999.9 210  6.7  8.2 999 9999.9 1018.3 99.9 99.9 99.9             
202517504501GSLM4   29  26.0 999.9 210  7.2  7.7 999 9999.9 1018.3 99.9 99.9 99.9             
202517505001GSLM4   29  26.1 999.9 210  7.2  8.2 999 9999.9 1018.3 99.9 99.9 99.9             
202517505101GSLM4   29  25.3 999.9 210  5.7  7.7 999 9999.9 1018.3 99.9 99.9 99.9             
202517505201GSLM4   29  25.0 999.9 200  5.7  6.2 999 9999.9 1018.3 99.9 99.9 99.9             
202517505301GSLM4   29  24.6 999.9 200  3.6  6.2 999 9999.9 1018.3 99.9 99.9 99.9             
202517505401GSLM4   29  24.3 999.9 200  4.1  5.1 999 9999.9 1018.3 99.9 99.9 99.9             
202517505501GSLM4   29  24.2 999.9 200  2.6  5.7 999 9999.9 1018.3 99.9 99.9 99.9             
202517506001GSLM4   29  24.8 999.9 200  5.1  6.2 999 9999.9 1018.3 99.9 99.9 99.9             
202517506101GSLM4   29  25.2 999.9 200  4.1  6.7 999 9999.9 1018.3 99.9 99.9 99.9             
202517506201GSLM4   29  25.3 999.9 190  1.5  4.6 999 9999.9 1018.3 99.9 99.9 99.9             
202517506301GSLM4   29  24.9 999.9 180  1.0  2.6 999 9999.9 1017.9 99.9 99.9 99.9             
202517506401GSLM4   29  25.4 999.9 180  1.5  2.6 999 9999.9 1018.3 99.9 99.9 99.9             
202517506501GSLM4   29  24.9 999.9 190  1.0  3.1 999 9999.9 1018.3 99.9 99.9 99.9             
202517507001GSLM4   29  24.7 999.9 180  1.0  2.1 999 9999.9 1018.3 99.9 99.9 99.9             
202517507101GSLM4   29  24.6 999.9 190  1.0  1.5 999 9999.9 1018.3 99.9 99.9 99.9             
202517507201GSLM4   29  24.8 999.9 190  1.5  2.6 999 9999.9 1018.3 99.9 99.9 99.9             
202517507301GSLM4   29  24.5 999.9 190  2.1  3.1 999 9999.9 1018.3 99.9 99.9 99.9             
202517507501GSLM4   29  24.4 999.9 200  5.7  6.2 999 9999.9 1018.6 99.9 99.9 99.9             
202517508001GSLM4   29  24.2 999.9 210  7.2  7.2 999 9999.9 1018.6 99.9 99.9 99.9             
202517508101GSLM4   29  24.0 999.9 220  6.7  7.7 999 9999.9 1018.3 99.9 99.9 99.9             
202517508201GSLM4   29  24.5 999.9 220  5.7  6.7 999 9999.9 1018.3 99.9 99.9 99.9             
202517508301GSLM4   29  24.0 999.9 220  5.7  5.7 999 9999.9 1018.6 99.9 99.9 99.9             
202517508401GSLM4   29  24.3 999.9 220  5.1  5.7 999 9999.9 1018.6 99.9 99.9 99.9             
202517508501GSLM4   29  24.0 999.9 220  5.7  5.7 999 9999.9 1019.0 99.9 99.9 99.9             
202517509001GSLM4   29  23.8 999.9 210  5.7  6.2 999 9999.9 1019.0 99.9 99.9 99.9             
202517509101GSLM4   29  23.7 999.9 220  5.7  6.2 999 9999.9 1019.0 99.9 99.9 99.9             
202517509201GSLM4   29  23.9 999.9 220  5.1  5.7 999 9999.9 1019.0 99.9 99.9 99.9             
202517509301GSLM4   29  23.9 999.9 220  5.1  5.7 999 9999.9 1018.6 99.9 99.9 99.9             
202517509401GSLM4   29  24.4 999.9 240  7.2  7.7 999 9999.9 1018.6 99.9 99.9 99.9             
202517509501GSLM4   29  24.7 999.9 240  7.7  8.2 999 9999.9 1019.0 99.9 99.9 99.9             
202517510001GSLM4   29  24.2 999.9 240  8.2  8.7 999 9999.9 1019.0 99.9 99.9 99.9             
202517510101GSLM4   29  24.5 999.9 250  7.7  8.7 999 9999.9 1019.3 99.9 99.9 99.9             
202517510201GSLM4   29  24.5 999.9 250  8.2  8.7 999 9999.9 1019.6 99.9 99.9 99.9             
202517510301GSLM4   29  24.2 999.9 250  8.2  8.2 999 9999.9 1019.6 99.9 99.9 99.9             
202517510401GSLM4   29  24.3 999.9 250  6.2  7.7 999 9999.9 1019.6 99.9 99.9 99.9             
202517510501GSLM4   29  24.1 999.9 250  5.7  6.2 999 9999.9 1020.0 99.9 99.9 99.9             
202517511001GSLM4   29  24.1 999.9 250  5.7  6.2 999 9999.9 1020.0 99.9 99.9 99.9             
202517511101GSLM4   29  24.1 999.9 250  5.1  6.2 999 9999.9 1020.3 99.9 99.9 99.9             
202517511201GSLM4   29  24.0 999.9 240  4.1  5.1 999 9999.9 1020.3 99.9 99.9 99.9             
202517511301GSLM4   29  23.7 999.9 240  4.6  4.6 999 9999.9 1020.7 99.9 99.9 99.9             
202517511401GSLM4   29  23.5 999.9 240  5.1  5.7 999 9999.9 1020.7 99.9 99.9 99.9             
202517511501GSLM4   29  23.9 999.9 240  4.6  5.7 999 9999.9 1020.7 99.9 99.9 99.9             
202517512001GSLM4   29  23.9 999.9 240  4.6  5.1 999 9999.9 1020.7 99.9 99.9 99.9             
202517512101GSLM4   29  23.8 999.9 230  4.6  5.1 999 9999.9 1020.7 99.9 99.9 99.9             
202517512201GSLM4   29  24.1 999.9 240  3.6  5.1 999 9999.9 1020.3 99.9 99.9 99.9             
202517512301GSLM4   29  24.1 999.9 240  5.1  5.1 999 9999.9 1020.7 99.9 99.9 99.9             
202517512401GSLM4   29  23.9 999.9 240  4.1  5.1 999 9999.9 1020.7 99.9 99.9 99.9             
202517512501GSLM4   29  24.0 999.9 250  3.1  4.1 999 9999.9 1021.0 99.9 99.9 99.9             
202517513001GSLM4   29  24.1 999.9 240  2.6  3.1 999 9999.9 1020.7 99.9 99.9 99.9             
202517513101GSLM4   29  24.1 999.9 230  3.1  3.1 999 9999.9 1021.0 99.9 99.9 99.9             
202517513201GSLM4   29  24.1 999.9 240  3.1  3.1 999 9999.9 1021.0 99.9 99.9 99.9             
202517513301GSLM4   29  24.5 999.9 210  2.1  3.1 999 9999.9 1021.0 99.9 99.9 99.9             
202517513401GSLM4   29  24.1 999.9   0  0.0  3.1 999 9999.9 1020.7 99.9 99.9 99.9             
202517513501GSLM4   29  24.4 999.9   0  0.0  0.5 999 9999.9 1021.0 99.9 99.9 99.9             
202517514001GSLM4   29  24.1 999.9 210  2.1  2.6 999 9999.9 1021.0 99.9 99.9 99.9             
202517514101GSLM4   29  24.2 999.9 200  1.0  3.1 999 9999.9 1020.7 99.9 99.9 99.9             
202517514201GSLM4   29  24.7 999.9 160  0.5  2.1 999 9999.9 1021.0 99.9 99.9 99.9             
202517514301GSLM4   29  24.3 999.9 150  2.6  3.6 999 9999.9 1021.0 99.9 99.9 99.9             
202517514401GSLM4   29  24.1 999.9 100  1.5  3.6 999 9999.9 1021.0 99.9 99.9 99.9             
202517514501GSLM4   29  24.8 999.9  50  1.0  3.1 999 9999.9 1021.0 99.9 99.9 99.9             
202517515001GSLM4   29  25.2 999.9  80  1.0  3.1 999 9999.9 1021.0 99.9 99.9 99.9             
202517515101GSLM4   29  25.3 999.9 140  1.5  2.1 999 9999.9 1021.3 99.9 99.9 99.9             
202517515201GSLM4   29  24.6 999.9 160  4.6  5.1 999 9999.9 1021.3 99.9 99.9 99.9             
202517515301GSLM4   29  24.8 999.9 150  3.6  5.1 999 9999.9 1021.3 99.9 99.9 99.9             
202517515401GSLM4   29  24.4 999.9 160  5.1  5.1 999 9999.9 1021.3 99.9 99.9 99.9             
202517515501GSLM4   29  23.2 999.9 140  4.1  5.1 999 9999.9 1021.3 99.9 99.9 99.9             
202517516001GSLM4   29  23.5 999.9 150  4.6  4.6 999 9999.9 1021.3 99.9 99.9 99.9             
202517516101GSLM4   29  24.2 999.9 160  5.7  5.7 999 9999.9 1021.7 99.9 99.9 99.9             
202517516201GSLM4   29  24.2 999.9 150  5.1  5.7 999 9999.9 1021.7 99.9 99.9 99.9             
202517516301GSLM4   29  24.4 999.9 150  5.1  5.1 999 9999.9 1021.3 99.9 99.9 99.9             
202517516401GSLM4   29  24.2 999.9 140  4.6  5.1 999 9999.9 1021.3 99.9 99.9 99.9             
202517516501GSLM4   29  23.8 999.9 150  4.6  5.7 999 9999.9 1021.3 99.9 99.9 99.9             
202517517001GSLM4   29  24.6 999.9 150  5.7  6.2 999 9999.9 1021.3 99.9 99.9 99.9             
202517517101GSLM4   29  24.9 999.9 150  5.1  5.7 999 9999.9 1021.7 99.9 99.9 99.9             
202517517201GSLM4   29  25.0 999.9 140  4.6  5.1 999 9999.9 1021.7 99.9 99.9 99.9             
202517517301GSLM4   29  25.1 999.9 130  4.6  4.6 999 9999.9 1021.3 99.9 99.9 99.9             
202517517401GSLM4   29  24.9 999.9 100  4.1  4.6 999 9999.9 1021.3 99.9 99.9 99.9
  New Graph (click on parameter):                                      
  at | dp | wd | ws | wg | cc | sr | bp | wt | wvh | wvp
google chart
  [every 3rd data value plotted]
106 matching elements
0.128 sec
This Web page created and maintained by Greg Lang, NOAA/GLERL,
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