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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: 0656 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 (287)
 (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 202428700001GSLM4 29 54.1 999.9 60 12.1 15.0 999 9999.9 30.02 99.9 99.9 99.9 202428700101GSLM4 29 54.1 999.9 60 13.0 14.0 999 9999.9 30.03 99.9 99.9 99.9 202428700201GSLM4 29 54.3 999.9 60 13.0 14.0 999 9999.9 30.02 99.9 99.9 99.9 202428700301GSLM4 29 54.3 999.9 50 13.0 15.0 999 9999.9 30.02 99.9 99.9 99.9 202428700401GSLM4 29 54.3 999.9 50 15.0 15.9 999 9999.9 30.01 99.9 99.9 99.9 202428700501GSLM4 29 54.5 999.9 60 15.0 16.9 999 9999.9 30.01 99.9 99.9 99.9 202428701001GSLM4 29 54.5 999.9 50 15.0 18.1 999 9999.9 30.01 99.9 99.9 99.9 202428701101GSLM4 29 54.3 999.9 50 14.0 15.9 999 9999.9 30.02 99.9 99.9 99.9 202428701201GSLM4 29 54.3 999.9 70 12.1 15.0 999 9999.9 30.02 99.9 99.9 99.9 202428701301GSLM4 29 54.3 999.9 50 12.1 15.0 999 9999.9 30.01 99.9 99.9 99.9 202428701401GSLM4 29 54.5 999.9 40 13.0 15.9 999 9999.9 30.00 99.9 99.9 99.9 202428701501GSLM4 29 54.5 999.9 50 11.1 14.0 999 9999.9 30.01 99.9 99.9 99.9 202428702001GSLM4 29 54.3 999.9 60 12.1 15.0 999 9999.9 29.99 99.9 99.9 99.9 202428702101GSLM4 29 54.5 999.9 50 11.1 15.0 999 9999.9 29.99 99.9 99.9 99.9 202428702201GSLM4 29 54.3 999.9 60 14.0 15.9 999 9999.9 29.98 99.9 99.9 99.9 202428702301GSLM4 29 54.3 999.9 70 13.0 15.0 999 9999.9 29.98 99.9 99.9 99.9 202428702401GSLM4 29 54.3 999.9 60 13.0 15.0 999 9999.9 29.98 99.9 99.9 99.9 202428702501GSLM4 29 54.3 999.9 60 12.1 15.0 999 9999.9 29.98 99.9 99.9 99.9 202428703001GSLM4 29 54.3 999.9 60 13.0 15.0 999 9999.9 29.97 99.9 99.9 99.9 202428703101GSLM4 29 54.3 999.9 40 13.0 15.0 999 9999.9 29.96 99.9 99.9 99.9 202428703201GSLM4 29 54.3 999.9 40 13.0 15.9 999 9999.9 29.96 99.9 99.9 99.9 202428703301GSLM4 29 54.3 999.9 40 14.0 16.9 999 9999.9 29.96 99.9 99.9 99.9 202428703401GSLM4 29 54.3 999.9 50 14.0 15.9 999 9999.9 29.95 99.9 99.9 99.9 202428703501GSLM4 29 54.3 999.9 60 14.0 15.9 999 9999.9 29.95 99.9 99.9 99.9 202428704001GSLM4 29 54.3 999.9 50 13.0 15.9 999 9999.9 29.94 99.9 99.9 99.9 202428704101GSLM4 29 54.3 999.9 60 13.0 14.0 999 9999.9 29.94 99.9 99.9 99.9 202428704201GSLM4 29 54.3 999.9 60 13.0 15.0 999 9999.9 29.94 99.9 99.9 99.9 202428704301GSLM4 29 54.3 999.9 50 12.1 15.0 999 9999.9 29.94 99.9 99.9 99.9 202428704401GSLM4 29 54.5 999.9 60 12.1 14.0 999 9999.9 29.94 99.9 99.9 99.9 202428704501GSLM4 29 54.5 999.9 70 12.1 14.0 999 9999.9 29.93 99.9 99.9 99.9 202428705001GSLM4 29 54.5 999.9 60 12.1 14.0 999 9999.9 29.93 99.9 99.9 99.9 202428705101GSLM4 29 54.5 999.9 70 12.1 14.0 999 9999.9 29.93 99.9 99.9 99.9 202428705201GSLM4 29 54.7 999.9 80 12.1 14.0 999 9999.9 29.93 99.9 99.9 99.9 202428705301GSLM4 29 54.7 999.9 80 11.1 14.0 999 9999.9 29.93 99.9 99.9 99.9 202428705401GSLM4 29 54.1 999.9 90 14.0 15.9 999 9999.9 29.90 99.9 99.9 99.9
  New Graph (click on parameter):                                      
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