NOAA - Great Lakes Environmental Research Laboratory

Real-Time Meteorological Observation Network
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.

Conditions at 7:06 pm CST on 01/20/2017 (DOY 021 01:06 GMT)
(Updated at about 07,22,37,52 minutes past the hour)

Wind Speed:	9.7 kts (5.0 m/s)
Max Wind Speed:	10.1 kts (5.2 m/s)
Wind Direction:	120° (ESE)
Air Temperature:	38.7 °F (3.7 °C)
Wind Chill:	31.5 °F (-0.3 °C)
Dew Point:	38.6 °F (3.7 °C)
Relative Humidity:	99.9 %
Data & Plots of Previous 3 Hours (2 minute increments)
Data & Plots of Previous 5 Days (hourly increments)
1 Day Windrose Plot, 5 Day Windrose Plot, (explanation)

Click on image to enlarge
(images updated 6X per hour)
Webcam Location & Info

6-hr animations: 1 2 3

Previous 24 images
(top of hour only): 1 2 3

All Images (past 14 days)

Nearby Webcams (external sites):
Chicago, facing east courtesy of LakeVision.com
Loyola University Lake Shore Campus
Loop and Lake Michigan courtesy of ABC News

------------- Previous 18 Hours (at top of hour) [English] [Metric] -------------
YEAR	DOY	CST	Wind Speed kts	Wind Gust kts	Peak Wind kts	Wind Dir deg	Air Temp deg F	Dew Point deg F	Rel Hum %
2017	020	1900	11.3	11.5	11.5	118	38.8	38.8	99.9
2017	020	1800	2.3	3.7	13.4	122	37.6	37.6	99.9
2017	020	1700	2.9	4.1	5.1	150	37.4	37.4	99.9
2017	020	1600	7.8	7.8	9.5	111	38.3	38.3	99.9
2017	020	1500	7.4	7.6	9.3	113	37.9	37.9	99.9
2017	020	1400	6.0	6.2	9.1	093	38.7	38.6	99.9
2017	020	1300	3.7	3.9	6.2	101	38.3	38.3	99.9
2017	020	1200	3.5	4.1	8.0	166	38.8	38.8	99.9
2017	020	1100	1.9	2.3	7.8	198	37.2	37.2	99.9
2017	020	1000	1.9	2.5	11.5	344	37.8	37.6	99.4
2017	020	0900	4.9	5.2	6.2	088	37.8	37.6	99.3
2017	020	0800	10.7	10.7	12.1	078	38.3	38.2	99.7
2017	020	0700	10.7	10.9	12.6	067	37.9	37.9	99.9
2017	020	0600	10.7	11.3	12.8	061	38.1	38.1	99.9
2017	020	0500	10.5	11.3	13.6	055	37.8	37.7	99.9
2017	020	0400	10.3	11.1	15.4	050	37.8	37.7	99.9
2017	020	0300	15.2	16.1	16.1	053	38.3	38.3	99.9
2017	020	0200	13.2	14.4	16.7	066	37.8	37.7	99.9

Note: Peak wind is max wind gust during entire hour

Click here for today's 2-minute data: 20170121.04t.txt, data format (metadata)
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Click here for past data: 2017 | 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

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

Real-Time Meteorological Observation NetworkChicago, IL (CHII2) Harrison-Dever Crib, approx. 2.75 miles offshore