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Realtime Great Lakes Weather Data and Marine Observations


CHII2: GLERL Chicago IL                                  
CMAN Station
Lat: 41.92°, Lon: -87.57°
Elevation: 176 m
Anemometer Height: 26 m
Related Site: NDBC

Related Site: GLERL


Current Time: 0640 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:
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 202425400001CHII2 19 78.6 56.1 260 11.1 12.1 999 9999.9 9999.9 99.9 99.9 99.9 202425400101CHII2 19 78.8 55.6 250 12.1 12.1 999 9999.9 9999.9 99.9 99.9 99.9 202425400201CHII2 19 78.4 55.4 250 13.0 15.9 999 9999.9 9999.9 99.9 99.9 99.9 202425400301CHII2 19 78.3 55.9 260 13.0 15.0 999 9999.9 9999.9 99.9 99.9 99.9 202425400401CHII2 19 78.1 55.6 260 12.1 13.0 999 9999.9 9999.9 99.9 99.9 99.9 202425400501CHII2 19 77.5 56.7 270 9.9 12.1 999 9999.9 9999.9 99.9 99.9 99.9 202425401001CHII2 19 77.4 56.5 270 11.1 13.0 999 9999.9 9999.9 99.9 99.9 99.9 202425401101CHII2 19 77.2 56.3 270 12.1 12.1 999 9999.9 9999.9 99.9 99.9 99.9 202425401201CHII2 19 76.8 56.7 270 11.1 12.1 999 9999.9 9999.9 99.9 99.9 99.9 202425401301CHII2 19 76.8 56.3 260 9.9 12.1 999 9999.9 9999.9 99.9 99.9 99.9 202425401401CHII2 19 76.6 56.3 270 9.9 12.1 999 9999.9 9999.9 99.9 99.9 99.9 202425401501CHII2 19 76.5 56.5 270 9.9 12.1 999 9999.9 9999.9 99.9 99.9 99.9 202425402001CHII2 19 76.3 55.9 270 9.9 11.1 999 9999.9 9999.9 99.9 99.9 99.9 202425402101CHII2 19 75.9 57.2 270 9.9 9.9 999 9999.9 9999.9 99.9 99.9 99.9 202425402201CHII2 19 75.7 55.9 270 8.0 8.9 999 9999.9 9999.9 99.9 99.9 99.9 202425402301CHII2 19 75.6 56.7 260 8.9 9.9 999 9999.9 9999.9 99.9 99.9 99.9 202425402401CHII2 19 75.6 56.7 260 9.9 11.1 999 9999.9 9999.9 99.9 99.9 99.9 202425402501CHII2 19 75.4 57.2 260 8.9 9.9 999 9999.9 9999.9 99.9 99.9 99.9 202425403001CHII2 19 75.2 56.3 260 8.9 11.1 999 9999.9 9999.9 99.9 99.9 99.9 202425403101CHII2 19 75.0 56.7 260 8.9 8.9 999 9999.9 9999.9 99.9 99.9 99.9 202425403201CHII2 19 75.2 56.7 250 8.9 9.9 999 9999.9 9999.9 99.9 99.9 99.9 202425403301CHII2 19 75.0 56.1 250 11.1 12.1 999 9999.9 9999.9 99.9 99.9 99.9 202425403401CHII2 19 74.7 56.5 250 8.9 9.9 999 9999.9 9999.9 99.9 99.9 99.9 202425403501CHII2 19 74.7 55.8 250 11.1 14.0 999 9999.9 9999.9 99.9 99.9 99.9 202425404001CHII2 19 74.3 56.1 250 9.9 12.1 999 9999.9 9999.9 99.9 99.9 99.9 202425404101CHII2 19 73.9 55.9 260 9.9 11.1 999 9999.9 9999.9 99.9 99.9 99.9 202425404201CHII2 19 73.4 56.8 260 8.0 8.9 999 9999.9 9999.9 99.9 99.9 99.9 202425404301CHII2 19 73.0 57.4 260 8.9 9.9 999 9999.9 9999.9 99.9 99.9 99.9 202425404401CHII2 19 73.0 56.1 260 9.9 11.1 999 9999.9 9999.9 99.9 99.9 99.9 202425404501CHII2 19 72.7 56.3 270 8.0 8.9 999 9999.9 9999.9 99.9 99.9 99.9 202425405001CHII2 19 72.5 56.1 260 8.0 8.9 999 9999.9 9999.9 99.9 99.9 99.9 202425405101CHII2 19 72.3 55.2 260 8.9 8.9 999 9999.9 9999.9 99.9 99.9 99.9 202425405201CHII2 19 72.1 56.7 260 8.0 8.0 999 9999.9 9999.9 99.9 99.9 99.9 202425405301CHII2 19 72.0 56.5 260 7.0 8.0 999 9999.9 9999.9 99.9 99.9 99.9 202425405401CHII2 19 71.6 56.7 260 7.0 7.0 999 9999.9 9999.9 99.9 99.9 99.9 202425405501CHII2 19 71.6 57.6 270 5.1 6.0 999 9999.9 9999.9 99.9 99.9 99.9 202425406001CHII2 19 71.4 57.2 260 5.1 5.1 999 9999.9 9999.9 99.9 99.9 99.9
  New Graph (click on parameter):                                      
  at | dp | wd | ws | wg | cc | sr | bp | wt | wvh | wvp
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