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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: 0848 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 (254)
 (See also Tables for determining DOY for a given date)
View multiple days of data for this station:
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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 202425400001GSLM4 29 64.6 999.9 70 9.9 12.1 999 9999.9 30.06 99.9 99.9 99.9 202425400101GSLM4 29 64.6 999.9 60 8.9 11.1 999 9999.9 30.07 99.9 99.9 99.9 202425400201GSLM4 29 64.6 999.9 50 9.9 11.1 999 9999.9 30.07 99.9 99.9 99.9 202425400301GSLM4 29 64.6 999.9 60 9.9 11.1 999 9999.9 30.07 99.9 99.9 99.9 202425400401GSLM4 29 64.6 999.9 70 9.9 11.1 999 9999.9 30.07 99.9 99.9 99.9 202425400501GSLM4 29 64.8 999.9 70 8.9 11.1 999 9999.9 30.07 99.9 99.9 99.9 202425401001GSLM4 29 64.6 999.9 60 8.9 9.9 999 9999.9 30.08 99.9 99.9 99.9 202425401101GSLM4 29 64.6 999.9 70 8.0 8.9 999 9999.9 30.08 99.9 99.9 99.9 202425401201GSLM4 29 64.4 999.9 70 7.0 8.9 999 9999.9 30.09 99.9 99.9 99.9 202425401301GSLM4 29 64.4 999.9 80 7.0 8.0 999 9999.9 30.09 99.9 99.9 99.9 202425401401GSLM4 29 64.6 999.9 70 7.0 8.0 999 9999.9 30.10 99.9 99.9 99.9 202425401501GSLM4 29 64.6 999.9 80 6.0 8.0 999 9999.9 30.10 99.9 99.9 99.9 202425402001GSLM4 29 64.6 999.9 80 6.0 7.0 999 9999.9 30.10 99.9 99.9 99.9 202425402101GSLM4 29 64.6 999.9 80 6.0 7.0 999 9999.9 30.10 99.9 99.9 99.9 202425402201GSLM4 29 64.6 999.9 70 6.0 7.0 999 9999.9 30.10 99.9 99.9 99.9 202425402301GSLM4 29 64.8 999.9 80 5.1 7.0 999 9999.9 30.10 99.9 99.9 99.9 202425402401GSLM4 29 64.6 999.9 90 5.1 6.0 999 9999.9 30.10 99.9 99.9 99.9 202425402501GSLM4 29 64.4 999.9 100 5.1 6.0 999 9999.9 30.10 99.9 99.9 99.9 202425403001GSLM4 29 64.2 999.9 100 5.1 6.0 999 9999.9 30.10 99.9 99.9 99.9 202425403101GSLM4 29 64.0 999.9 110 5.1 6.0 999 9999.9 30.11 99.9 99.9 99.9 202425403201GSLM4 29 64.0 999.9 110 6.0 7.0 999 9999.9 30.11 99.9 99.9 99.9 202425403301GSLM4 29 63.9 999.9 100 6.0 7.0 999 9999.9 30.11 99.9 99.9 99.9 202425403401GSLM4 29 63.7 999.9 100 6.0 7.0 999 9999.9 30.11 99.9 99.9 99.9 202425403501GSLM4 29 63.7 999.9 100 6.0 7.0 999 9999.9 30.11 99.9 99.9 99.9 202425404001GSLM4 29 63.7 999.9 100 6.0 7.0 999 9999.9 30.12 99.9 99.9 99.9 202425404101GSLM4 29 63.5 999.9 100 6.0 7.0 999 9999.9 30.12 99.9 99.9 99.9 202425404201GSLM4 29 63.5 999.9 110 6.0 7.0 999 9999.9 30.12 99.9 99.9 99.9 202425404301GSLM4 29 63.5 999.9 110 5.1 7.0 999 9999.9 30.12 99.9 99.9 99.9 202425404401GSLM4 29 63.5 999.9 130 4.1 5.1 999 9999.9 30.12 99.9 99.9 99.9 202425404501GSLM4 29 63.5 999.9 140 4.1 5.1 999 9999.9 30.12 99.9 99.9 99.9 202425405001GSLM4 29 63.3 999.9 150 5.1 6.0 999 9999.9 30.12 99.9 99.9 99.9 202425405101GSLM4 29 63.3 999.9 150 2.9 6.0 999 9999.9 30.13 99.9 99.9 99.9 202425405201GSLM4 29 63.1 999.9 160 1.0 5.1 999 9999.9 30.13 99.9 99.9 99.9 202425405301GSLM4 29 63.1 999.9 0 0.0 6.0 999 9999.9 30.13 99.9 99.9 99.9 202425405401GSLM4 29 63.1 999.9 180 1.0 1.9 999 9999.9 30.13 99.9 99.9 99.9 202425405501GSLM4 29 63.3 999.9 0 0.0 5.1 999 9999.9 30.13 99.9 99.9 99.9 202425406001GSLM4 29 63.3 999.9 200 2.9 7.0 999 9999.9 30.13 99.9 99.9 99.9 202425406101GSLM4 29 63.5 999.9 200 1.9 7.0 999 9999.9 30.13 99.9 99.9 99.9 202425406201GSLM4 29 63.5 999.9 200 1.9 6.0 999 9999.9 30.13 99.9 99.9 99.9 202425406301GSLM4 29 63.1 999.9 170 1.0 6.0 999 9999.9 30.13 99.9 99.9 99.9 202425406401GSLM4 29 63.1 999.9 200 1.9 5.1 999 9999.9 30.13 99.9 99.9 99.9 202425406501GSLM4 29 63.3 999.9 200 5.1 7.0 999 9999.9 30.13 99.9 99.9 99.9 202425407001GSLM4 29 63.5 999.9 200 2.9 7.0 999 9999.9 30.13 99.9 99.9 99.9 202425407101GSLM4 29 63.7 999.9 190 1.9 8.0 999 9999.9 30.13 99.9 99.9 99.9 202425407201GSLM4 29 63.7 999.9 190 1.9 5.1 999 9999.9 30.13 99.9 99.9 99.9 202425407301GSLM4 29 63.7 999.9 0 0.0 4.1 999 9999.9 30.13 99.9 99.9 99.9 202425407401GSLM4 29 63.7 999.9 190 1.9 6.0 999 9999.9 30.13 99.9 99.9 99.9
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