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. See also rtmon status, webcam status

Conditions at 10:50 am CDT on 08/10/2020 (DOY 223 15:50 GMT)
(Updated at about 06,21,36,51 minutes past the hour)

Wind Speed:	9.1 kts (4.7 m/s)
Max Wind Speed:	10.1 kts (5.2 m/s)
Wind Direction:	227° (SW)
Air Temperature:	81.1 °F (27.3 °C)
Dew Point:	76.6 °F (24.8 °C)
Relative Humidity:	85.8 %
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 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] ----------
YEAR	DOY	CDT	Wind Spd kts	Wind Gust kts	Peak Wind kts	Wind Dir deg	Air Tmp F	Dew Pt F	Rel Hum %
2020	223	1000	13.4	14.2	14.4	216	78.8	76.2	91.7
2020	223	0900	16.7	17.5	17.5	200	77.5	75.8	94.2
2020	223	0800	15.0	15.7	17.9	175	75.4	75.1	99.2
2020	223	0700	14.2	15.2	16.7	181	74.7	74.8	100.4
2020	223	0600	14.6	15.4	17.3	182	75.2	75.2	99.9
2020	223	0500	12.2	12.8	16.9	190	76.1	76.1	100.0
2020	223	0400	14.2	14.8	14.8	196	76.6	76.5	99.4
2020	223	0300	13.4	13.8	14.8	172	75.9	76.0	100.4
2020	223	0200	12.4	14.4	15.4	154	75.0	75.1	100.4
2020	223	0100	12.6	15.0	16.7	148	74.8	75.0	100.4
2020	223	0000	15.0	15.6	15.6	109	73.2	73.3	100.4
2020	222	2300	10.7	11.3	18.5	098	73.6	73.7	100.3
2020	222	2200	9.1	9.7	12.6	070	72.3	72.4	100.3
2020	222	2100	19.2	20.8	20.8	360	73.0	73.1	100.2
2020	222	2000	14.6	17.5	29.7	206	83.7	74.5	73.5
2020	222	1900	18.5	19.4	23.5	201	84.2	74.5	72.2
2020	222	1800	20.4	21.8	23.1	186	83.5	73.8	72.3
2020	222	1700	18.5	19.4	22.6	193	83.5	73.2	70.8

Note: Peak wind is max wind gust during entire hour

Click here for today's 2-minute data: 20200810.04t.txt, data format (metadata)
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Click here for past data: 2020 | 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

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