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Realtime Great Lakes Weather Data and Marine Observations


CMAN and U.S. Coast Guard Stations

Station Labels = Latest Wind Speed
Click on marker to view data for that station
or Hold Down Shift Key for Drag Zoom
Note: Only stations containing data for selected day are plotted
See also CMAN Stations not reporting today
Station Types
(Click on name to view all stations for that type)
White MarkerAll Stations 
Lt Blue MarkerBuoys 
Red MarkerCMAN & USCG Stations (22)
Yellow MarkerShip Reports 
Green MarkerSurface Airways Stations 

Gray MarkerReport > 3 Hours Old

  Station Labels: Off | ID | Name
  Air Temp | Wind Spd | Wind Dir
  Bar Press | Wave Hgt | Water Temp
  Cloud Cover

  Change Units to: English | Metric


 Enter New DOY (001-366):  Or Today (167)
 (See also Tables for determining DOY for a given date)
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 202516700001APNM4 29 19.3 999.9 220 1.5 2.1 999 9999.9 9999.9 99.9 99.9 99.9 202516700001BARN6 49 16.8 999.9 40 12.9 13.9 999 9999.9 1019.3 99.9 99.9 99.9 202516700001CBLO1 49 999.9 999.9 40 3.6 4.1 999 9999.9 9999.9 99.9 99.9 99.9 202516700001CHII2 19 18.1 17.5 350 2.6 3.6 999 9999.9 9999.9 99.9 99.9 99.9 202516700001CLSM4 39 20.3 999.9 50 5.7 6.2 999 9999.9 1019.0 99.9 99.9 99.9 202516700001CYGM4 29 21.3 4.2 110 4.1 5.1 999 9999.9 1019.0 99.9 99.9 99.9 202516700001DISW3 09 9.7 5.8 60 5.1 5.7 999 9999.9 1019.5 99.9 99.9 99.9 202516700001HHLO1 49 19.3 999.9 80 4.1 4.6 999 9999.9 1016.3 99.9 99.9 99.9 202516700001MCYI3 19 17.9 17.9 40 5.1 5.7 999 9999.9 1017.1 99.9 99.9 99.9 202516700001MKGM4 19 16.6 16.1 340 5.7 5.7 999 9999.9 1017.8 99.9 99.9 99.9 202516700001MLWW3 19 14.0 999.9 50 2.1 2.6 999 9999.9 9999.9 99.9 99.9 99.9 202516700001OLCN6 59 18.3 999.9 90 2.1 3.1 999 9999.9 1020.0 99.9 99.9 99.9 202516700001PILM4 09 999.9 999.9 0 0.0 0.0 999 9999.9 1021.0 99.9 99.9 99.9 202516700001ROAM4 09 13.8 999.9 120 1.5 2.1 999 9999.9 1020.6 99.9 99.9 99.9 202516700001RPRN6 59 18.6 999.9 120 3.1 4.6 999 9999.9 1010.5 99.9 99.9 99.9 202516700001SBIO1 49 20.0 999.9 40 2.1 3.6 999 9999.9 1018.2 99.9 99.9 99.9 202516700001SBLM4 29 999.9 999.9 60 7.2 7.7 999 9999.9 9999.9 99.9 99.9 99.9 202516700001SGNW3 19 12.4 999.9 20 3.6 3.6 999 9999.9 1019.4 99.9 99.9 99.9 202516700001SVNM4 19 17.8 999.9 340 5.1 6.2 999 9999.9 9999.9 99.9 99.9 99.9 202516700001THLO1 49 19.8 16.7 100 2.1 2.6 999 9999.9 1017.8 99.9 99.9 99.9 202516700001TWCO1 49 20.2 17.6 999 99.9 99.9 999 9999.9 9999.9 21.0 99.9 99.9 202516700001YGNN6 59 20.3 999.9 60 1.5 2.1 999 9999.9 1019.0 99.9 99.9 99.9 202516700051CYGM4 29 21.2 3.9 120 5.1 6.2 999 9999.9 1019.0 99.9 99.9 99.9 202516700101APNM4 29 18.8 999.9 200 1.5 1.5 999 9999.9 9999.9 99.9 99.9 99.9 202516700101CYGM4 29 21.1 4.2 110 3.1 5.7 999 9999.9 1019.0 99.9 99.9 99.9 202516700101MLWW3 19 14.0 999.9 40 2.6 3.1 999 9999.9 9999.9 99.9 99.9 99.9 202516700101TWCO1 49 20.3 17.6 999 99.9 99.9 999 9999.9 9999.9 20.8 99.9 99.9 202516700151CYGM4 29 21.0 3.9 80 3.1 4.6 999 9999.9 1019.0 99.9 99.9 99.9
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