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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: 0009 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 (209)
 (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
202420800001GSLM4   29  21.7 999.9  60  5.1  6.2 999 9999.9 1022.7 99.9 99.9 99.9             
202420800101GSLM4   29  21.7 999.9  70  5.1  6.2 999 9999.9 1022.7 99.9 99.9 99.9             
202420800201GSLM4   29  21.6 999.9  60  5.7  6.2 999 9999.9 1022.7 99.9 99.9 99.9             
202420800301GSLM4   29  21.6 999.9  60  5.7  6.7 999 9999.9 1022.7 99.9 99.9 99.9             
202420800401GSLM4   29  21.5 999.9  50  6.2  7.2 999 9999.9 1022.7 99.9 99.9 99.9             
202420800501GSLM4   29  21.4 999.9  60  5.1  6.2 999 9999.9 1022.7 99.9 99.9 99.9             
202420801001GSLM4   29  21.3 999.9  60  5.1  6.2 999 9999.9 1023.0 99.9 99.9 99.9             
202420801101GSLM4   29  21.3 999.9  60  5.1  6.2 999 9999.9 1023.0 99.9 99.9 99.9             
202420801201GSLM4   29  21.3 999.9  50  5.1  6.2 999 9999.9 1023.0 99.9 99.9 99.9             
202420801301GSLM4   29  21.3 999.9  60  5.7  6.7 999 9999.9 1023.0 99.9 99.9 99.9             
202420801401GSLM4   29  21.2 999.9  60  4.6  6.2 999 9999.9 1023.0 99.9 99.9 99.9             
202420801501GSLM4   29  21.2 999.9  60  5.1  6.2 999 9999.9 1023.4 99.9 99.9 99.9             
202420802001GSLM4   29  21.2 999.9  60  5.1  6.2 999 9999.9 1023.4 99.9 99.9 99.9             
202420802101GSLM4   29  21.2 999.9  60  5.7  6.2 999 9999.9 1023.4 99.9 99.9 99.9             
202420802201GSLM4   29  21.2 999.9  50  4.6  6.2 999 9999.9 1023.4 99.9 99.9 99.9             
202420802301GSLM4   29  21.2 999.9  60  5.1  6.2 999 9999.9 1023.4 99.9 99.9 99.9             
202420802401GSLM4   29  21.3 999.9  50  4.6  5.7 999 9999.9 1023.4 99.9 99.9 99.9             
202420802501GSLM4   29  21.3 999.9  60  4.6  5.1 999 9999.9 1023.4 99.9 99.9 99.9             
202420803001GSLM4   29  21.4 999.9  50  4.1  5.7 999 9999.9 1023.4 99.9 99.9 99.9             
202420803101GSLM4   29  21.6 999.9  50  4.1  5.1 999 9999.9 1023.4 99.9 99.9 99.9             
202420803201GSLM4   29  21.8 999.9  40  4.6  5.1 999 9999.9 1023.7 99.9 99.9 99.9             
202420803301GSLM4   29  21.7 999.9  30  4.6  5.1 999 9999.9 1023.7 99.9 99.9 99.9             
202420803401GSLM4   29  21.7 999.9  40  4.1  4.6 999 9999.9 1023.7 99.9 99.9 99.9             
202420803501GSLM4   29  21.8 999.9  40  3.6  4.1 999 9999.9 1023.7 99.9 99.9 99.9             
202420804001GSLM4   29  21.7 999.9  40  3.1  3.6 999 9999.9 1023.7 99.9 99.9 99.9             
202420804201GSLM4   29  21.7 999.9  40  2.6  3.6 999 9999.9 1023.7 99.9 99.9 99.9             
202420804301GSLM4   29  21.7 999.9  50  2.6  3.1 999 9999.9 1023.7 99.9 99.9 99.9             
202420804401GSLM4   29  21.6 999.9  40  2.6  3.1 999 9999.9 1023.7 99.9 99.9 99.9             
202420804501GSLM4   29  21.6 999.9  50  2.6  3.1 999 9999.9 1023.7 99.9 99.9 99.9             
202420805001GSLM4   29  21.6 999.9  40  3.1  3.6 999 9999.9 1023.7 99.9 99.9 99.9             
202420805101GSLM4   29  21.6 999.9  50  2.6  3.1 999 9999.9 1023.7 99.9 99.9 99.9             
202420805201GSLM4   29  21.5 999.9  30  2.1  2.6 999 9999.9 1023.7 99.9 99.9 99.9             
202420805301GSLM4   29  21.5 999.9  20  2.1  3.1 999 9999.9 1023.7 99.9 99.9 99.9             
202420805401GSLM4   29  21.4 999.9  30  2.1  3.1 999 9999.9 1023.7 99.9 99.9 99.9             
202420805501GSLM4   29  21.4 999.9  40  2.1  3.1 999 9999.9 1023.7 99.9 99.9 99.9             
202420806001GSLM4   29  21.4 999.9  30  1.5  2.6 999 9999.9 1023.7 99.9 99.9 99.9             
202420806101GSLM4   29  20.9 999.9 340  2.1  2.6 999 9999.9 1023.7 99.9 99.9 99.9             
202420806201GSLM4   29  20.8 999.9 350  1.5  2.6 999 9999.9 1023.7 99.9 99.9 99.9             
202420806301GSLM4   29  20.7 999.9 340  1.5  2.6 999 9999.9 1023.7 99.9 99.9 99.9             
202420806401GSLM4   29  20.4 999.9 360  1.5  2.1 999 9999.9 1023.7 99.9 99.9 99.9             
202420806501GSLM4   29  20.2 999.9 330  2.1  2.1 999 9999.9 1024.0 99.9 99.9 99.9             
202420807001GSLM4   29  19.8 999.9 330  1.5  2.6 999 9999.9 1024.0 99.9 99.9 99.9             
202420807101GSLM4   29  19.7 999.9 320  1.0  2.1 999 9999.9 1024.0 99.9 99.9 99.9             
202420807201GSLM4   29  19.9 999.9 340  0.5  1.5 999 9999.9 1024.0 99.9 99.9 99.9             
202420807301GSLM4   29  19.8 999.9 320  1.5  2.1 999 9999.9 1024.0 99.9 99.9 99.9             
202420807401GSLM4   29  19.6 999.9 330  1.0  1.5 999 9999.9 1024.0 99.9 99.9 99.9             
202420807501GSLM4   29  19.5 999.9 330  2.6  2.6 999 9999.9 1024.0 99.9 99.9 99.9             
202420808001GSLM4   29  19.2 999.9 330  3.1  3.6 999 9999.9 1024.0 99.9 99.9 99.9             
202420808101GSLM4   29  19.0 999.9 330  3.1  3.6 999 9999.9 1024.0 99.9 99.9 99.9             
202420808201GSLM4   29  18.8 999.9 330  3.1  3.6 999 9999.9 1024.0 99.9 99.9 99.9             
202420808301GSLM4   29  18.6 999.9 330  3.1  3.6 999 9999.9 1024.0 99.9 99.9 99.9             
202420808401GSLM4   29  18.6 999.9 330  3.1  3.6 999 9999.9 1024.0 99.9 99.9 99.9             
202420808501GSLM4   29  18.6 999.9 340  3.1  3.6 999 9999.9 1024.0 99.9 99.9 99.9             
202420809001GSLM4   29  18.8 999.9 340  2.6  3.6 999 9999.9 1024.4 99.9 99.9 99.9             
202420809101GSLM4   29  18.8 999.9 340  2.6  3.1 999 9999.9 1024.4 99.9 99.9 99.9             
202420809201GSLM4   29  19.0 999.9 340  3.1  3.1 999 9999.9 1024.4 99.9 99.9 99.9             
202420809401GSLM4   29  19.3 999.9 340  2.6  3.1 999 9999.9 1024.4 99.9 99.9 99.9             
202420809501GSLM4   29  19.1 999.9 340  2.6  3.1 999 9999.9 1024.4 99.9 99.9 99.9             
202420810001GSLM4   29  19.0 999.9 340  2.1  3.1 999 9999.9 1024.7 99.9 99.9 99.9             
202420810101GSLM4   29  18.9 999.9 330  2.1  2.6 999 9999.9 1024.7 99.9 99.9 99.9             
202420810201GSLM4   29  19.0 999.9 310  1.5  2.6 999 9999.9 1024.7 99.9 99.9 99.9             
202420810301GSLM4   29  18.8 999.9 290  2.1  2.6 999 9999.9 1024.7 99.9 99.9 99.9             
202420810401GSLM4   29  18.8 999.9 300  1.5  2.6 999 9999.9 1024.7 99.9 99.9 99.9             
202420810501GSLM4   29  18.9 999.9 300  1.5  2.1 999 9999.9 1024.7 99.9 99.9 99.9             
202420811001GSLM4   29  19.3 999.9 320  1.5  2.1 999 9999.9 1024.7 99.9 99.9 99.9             
202420811101GSLM4   29  19.5 999.9 330  1.5  2.6 999 9999.9 1024.7 99.9 99.9 99.9             
202420811201GSLM4   29  19.3 999.9 320  2.1  2.6 999 9999.9 1024.7 99.9 99.9 99.9             
202420811301GSLM4   29  19.0 999.9 330  2.6  2.6 999 9999.9 1024.7 99.9 99.9 99.9             
202420811401GSLM4   29  18.5 999.9 330  2.6  3.1 999 9999.9 1025.1 99.9 99.9 99.9             
202420811501GSLM4   29  18.5 999.9 330  3.1  3.6 999 9999.9 1024.7 99.9 99.9 99.9             
202420812001GSLM4   29  18.7 999.9 330  2.6  3.1 999 9999.9 1024.7 99.9 99.9 99.9             
202420812101GSLM4   29  19.2 999.9 340  2.1  3.1 999 9999.9 1025.1 99.9 99.9 99.9             
202420812201GSLM4   29  19.3 999.9 350  2.1  2.6 999 9999.9 1025.1 99.9 99.9 99.9             
202420812301GSLM4   29  19.7 999.9  10  1.5  2.1 999 9999.9 1025.1 99.9 99.9 99.9             
202420812401GSLM4   29  19.8 999.9  10  2.1  2.1 999 9999.9 1025.1 99.9 99.9 99.9             
202420812501GSLM4   29  19.8 999.9  10  2.1  2.6 999 9999.9 1025.1 99.9 99.9 99.9             
202420813001GSLM4   29  19.8 999.9 360  2.1  2.6 999 9999.9 1025.1 99.9 99.9 99.9             
202420813101GSLM4   29  19.8 999.9 350  2.1  3.1 999 9999.9 1025.4 99.9 99.9 99.9             
202420813201GSLM4   29  19.8 999.9 350  2.1  2.6 999 9999.9 1025.4 99.9 99.9 99.9             
202420813301GSLM4   29  19.9 999.9 360  2.1  2.6 999 9999.9 1025.1 99.9 99.9 99.9             
202420813401GSLM4   29  19.9 999.9 360  2.1  2.6 999 9999.9 1025.1 99.9 99.9 99.9             
202420813501GSLM4   29  20.1 999.9  10  1.5  2.6 999 9999.9 1025.1 99.9 99.9 99.9             
202420814001GSLM4   29  20.3 999.9 360  1.5  2.1 999 9999.9 1025.1 99.9 99.9 99.9             
202420814101GSLM4   29  20.4 999.9 350  1.5  1.5 999 9999.9 1024.7 99.9 99.9 99.9             
202420814201GSLM4   29  20.6 999.9  20  0.5  1.5 999 9999.9 1024.7 99.9 99.9 99.9             
202420814301GSLM4   29  20.7 999.9  10  0.5  1.0 999 9999.9 1024.7 99.9 99.9 99.9             
202420814401GSLM4   29  20.8 999.9   0  0.0  1.0 999 9999.9 1024.7 99.9 99.9 99.9             
202420815001GSLM4   29  20.7 999.9 360  0.5  1.0 999 9999.9 1024.7 99.9 99.9 99.9             
202420815101GSLM4   29  20.8 999.9   0  0.0  1.0 999 9999.9 1025.1 99.9 99.9 99.9             
202420815201GSLM4   29  20.7 999.9 340  1.0  1.5 999 9999.9 1025.1 99.9 99.9 99.9             
202420815301GSLM4   29  20.8 999.9   0  0.0  1.5 999 9999.9 1025.1 99.9 99.9 99.9             
202420815401GSLM4   29  21.5 999.9   0  0.0  1.0 999 9999.9 1024.7 99.9 99.9 99.9             
202420815501GSLM4   29  21.4 999.9   0  0.0  1.0 999 9999.9 1024.4 99.9 99.9 99.9             
202420816001GSLM4   29  21.2 999.9   0  0.0  1.0 999 9999.9 1024.4 99.9 99.9 99.9             
202420816101GSLM4   29  21.6 999.9  60  1.0  1.5 999 9999.9 1024.4 99.9 99.9 99.9             
202420816201GSLM4   29  21.3 999.9   0  0.0  2.1 999 9999.9 1024.4 99.9 99.9 99.9             
202420816301GSLM4   29  21.3 999.9   0  0.0  1.0 999 9999.9 1024.4 99.9 99.9 99.9             
202420816401GSLM4   29  22.4 999.9   0  0.0  0.5 999 9999.9 1024.4 99.9 99.9 99.9             
202420816501GSLM4   29  23.6 999.9   0  0.0  0.0 999 9999.9 1024.7 99.9 99.9 99.9             
202420817001GSLM4   29  23.9 999.9   0  0.0  1.0 999 9999.9 1024.4 99.9 99.9 99.9             
202420817101GSLM4   29  23.9 999.9   0  0.0  1.0 999 9999.9 1024.4 99.9 99.9 99.9             
202420817201GSLM4   29  22.8 999.9   0  0.0  0.5 999 9999.9 1024.4 99.9 99.9 99.9             
202420817301GSLM4   29  23.7 999.9   0  0.0  1.5 999 9999.9 1024.0 99.9 99.9 99.9             
202420817401GSLM4   29  23.3 999.9   0  0.0  1.5 999 9999.9 1024.0 99.9 99.9 99.9             
202420817501GSLM4   29  22.4 999.9 160  1.0  1.0 999 9999.9 1024.0 99.9 99.9 99.9             
202420818001GSLM4   29  22.3 999.9 160  1.0  1.5 999 9999.9 1024.0 99.9 99.9 99.9             
202420818101GSLM4   29  22.9 999.9   0  0.0  1.5 999 9999.9 1024.0 99.9 99.9 99.9             
202420818201GSLM4   29  22.9 999.9 160  0.5  1.5 999 9999.9 1024.0 99.9 99.9 99.9             
202420818301GSLM4   29  23.1 999.9   0  0.0  1.0 999 9999.9 1024.0 99.9 99.9 99.9             
202420818401GSLM4   29  22.7 999.9   0  0.0  2.1 999 9999.9 1023.7 99.9 99.9 99.9             
202420818501GSLM4   29  22.9 999.9 160  0.5  2.6 999 9999.9 1023.7 99.9 99.9 99.9             
202420819001GSLM4   29  22.8 999.9 170  1.0  3.1 999 9999.9 1023.4 99.9 99.9 99.9             
202420819101GSLM4   29  22.9 999.9 160  2.6  3.1 999 9999.9 1023.4 99.9 99.9 99.9             
202420819201GSLM4   29  23.0 999.9 160  2.6  3.6 999 9999.9 1023.4 99.9 99.9 99.9             
202420819301GSLM4   29  22.7 999.9 150  3.6  4.1 999 9999.9 1023.4 99.9 99.9 99.9             
202420819401GSLM4   29  22.8 999.9 160  1.5  4.1 999 9999.9 1023.4 99.9 99.9 99.9             
202420819501GSLM4   29  23.3 999.9 150  3.1  3.6 999 9999.9 1023.4 99.9 99.9 99.9             
202420820001GSLM4   29  23.5 999.9 160  1.5  3.1 999 9999.9 1023.0 99.9 99.9 99.9             
202420820201GSLM4   29  23.9 999.9 160  1.5  2.6 999 9999.9 1023.0 99.9 99.9 99.9             
202420820301GSLM4   29  23.2 999.9 150  2.1  2.6 999 9999.9 1023.0 99.9 99.9 99.9             
202420820401GSLM4   29  23.3 999.9 150  2.1  2.6 999 9999.9 1022.7 99.9 99.9 99.9             
202420820501GSLM4   29  23.4 999.9 150  2.1  3.1 999 9999.9 1022.7 99.9 99.9 99.9             
202420821001GSLM4   29  23.6 999.9 160  2.1  3.1 999 9999.9 1022.4 99.9 99.9 99.9             
202420821101GSLM4   29  23.9 999.9 160  1.5  2.6 999 9999.9 1022.4 99.9 99.9 99.9             
202420821201GSLM4   29  23.9 999.9 160  3.1  3.6 999 9999.9 1022.4 99.9 99.9 99.9             
202420821301GSLM4   29  23.9 999.9 150  3.1  3.6 999 9999.9 1022.4 99.9 99.9 99.9             
202420821401GSLM4   29  23.9 999.9 160  2.1  4.1 999 9999.9 1022.4 99.9 99.9 99.9             
202420821501GSLM4   29  24.4 999.9 160  2.6  3.1 999 9999.9 1022.4 99.9 99.9 99.9             
202420822001GSLM4   29  24.0 999.9 150  3.1  3.6 999 9999.9 1022.0 99.9 99.9 99.9             
202420822101GSLM4   29  24.0 999.9 150  3.1  3.6 999 9999.9 1022.0 99.9 99.9 99.9             
202420822201GSLM4   29  24.2 999.9 150  2.1  3.1 999 9999.9 1022.0 99.9 99.9 99.9             
202420822301GSLM4   29  24.4 999.9 160  2.1  3.1 999 9999.9 1022.0 99.9 99.9 99.9             
202420822401GSLM4   29  24.7 999.9 150  2.6  3.1 999 9999.9 1022.0 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]
133 matching elements
0.037 sec
This Web page created and maintained by Greg Lang, NOAA/GLERL,
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