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Chicago, IL  (CHII2)  Harrison-Dever Crib, approx. 2.75 miles offshore

See Metadata File for full description of instruments and parameters, as well as site maps. See also rtmon status, webcam status
Conditions at 3:20 am CST on 12/11/2019 (DOY 345 09:20 GMT)
(Updated at about 06,21,36,51 minutes past the hour)
Wind Speed:   18.3 kts   (9.4 m/s)
Max Wind Speed:   20.2 kts   (10.4 m/s)
Wind Direction:   250° (WSW)
Air Temperature:   15.6 °F   (-9.1 °C)
Wind Chill:   -1.9 °F   (-18.8 °C)
Dew Point:   4.3 °F   (-15.4 °C)
Relative Humidity:   60.7 %
Data & Plots of Previous 3 Hours (2 minute increments)
Data & Plots of Previous 5 Days (hourly increments)
         1 Day Windrose Plot5 Day Windrose Plot(explanation)         
Click on image to enlarge
(images updated 6X per hour)
Webcam Location & Info
[Live Webcam Image from Chicago, IL Met Station Camera 1]
[Live Webcam Image from Chicago, IL Met Station Camera 2]
[Live Webcam Image from Chicago, IL Met Station Camera 3]
6-hr animations: 1  2  3
Previous 48 images (top of hour only): 1  2  3
All Images (past 10 days)

Nearby Webcams (external sites):
Webcams of Chicago courtesy of WXYZ Webcams
Loyola University Lake Shore Campus
Loop and Lake Michigan courtesy of ABC News

---------- Previous 18 Hours (at top of hour)  [English] [Metric] ----------
YEARDOY CST Wind
Spd
m/s
Wind
Gust
m/s
Peak
Wind
m/s
Wind
Dir
deg
Air
Tmp
C
Wind
Chill
C
Dew
Pt
C
Rel
Hum
%
20193450300 10.8 12.3 12.5 247 -8.6 -18.7 -14.1 64.9
20193450200 10.3 13.5 17.2 237 -7.5 -17.1 -12.1 69.9
20193450100 9.6 11.9 11.9 248 -7.7 -17.1 -11.4 74.7
20193450000 9.8 11.5 13.0 256 -8.0 -17.5 -12.0 73.1
20193442300 11.0 12.8 12.8 268 -7.9 -17.9 -12.3 70.6
20193442200 9.1 12.1 12.8 262 -7.4 -16.5 -11.7 71.7
20193442100 10.9 13.0 13.2 261 -7.1 -16.8 -13.0 62.9
20193442000 9.4 10.8 12.7 258 -6.5 -15.4 -15.0 51.2
20193441900 8.7 10.9 12.4 253 -6.4 -15.0 -15.7 48.0
20193441800 9.3 10.6 13.1 254 -6.0 -14.7 -14.9 49.9
20193441700 8.9 10.8 11.8 266 -5.6 -14.0 -16.3 43.1
20193441600 8.4 9.7 11.0 267 -5.3 -13.4 -15.1 46.4
20193441500 7.2 9.0 9.8 252 -5.2 -12.7 -15.3 45.4
20193441400 8.8 10.2 10.5 276 -5.8 -14.2 -16.5 43.1
20193441300 8.4 9.9 12.1 274 -6.4 -14.8 -14.5 52.9
20193441200 7.3 9.1 11.0 271 -7.1 -15.2 -12.1 67.5
20193441100 9.9 11.6 12.0 278 -8.0 -17.6 -11.6 75.5
20193441000 9.7 11.3 11.8 263 -8.6 -18.3 -11.7 78.7
Note: Peak wind is max wind gust during entire hour
Note: Wind chill is set to -99 if air temp > 40 F or wind speed < 3 mph

      right arrow Click here for today's 2-minute data: 20191211.04t.txt, data format (metadata)
      right arrow Click here for past data: 2019 | Archive

Access current marine observations on your mobile device. See NDBC's mobile access page.
These data are also available from NDBC website and NDBC's Dial-a-Buoy Program.
See also NWS Marine Forecast for this area, and NWS Recreational Beach Forecast

Realtime Data Disclaimer
Special thanks to City of Chicago, IL / Water Department, USACE


Additional Great Lakes Meteorological Observations

» NWS, Grand Rapids Office: Near-Realtime Marine Weather, includes current conditions and forecasts
» NWS, White Lake Office: Near-Realtime Marine Weather, includes current conditions and forecasts
» NDBC Great Lakes ImageMap showing U.S. and Canadian Buoys and C-MAN Stations
» NOAA CoastWatch Great Lakes NOAAPORT Data, includes all station types
» NOAA's NowCoast: Web mapping portal to real-time coastal observations
» Winds courtesy of iWindsurf.com
» NWS Great Lakes Marine Text Forecasts by Zone
» Links to Great Lakes Water Temperature, Wind/Wave Data, & Water Levels
» GLIN: Great Lakes Information Network