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 6:50 pm CDT on 10/27/2020 (DOY 301 23:50 GMT)
(Updated at about 06,21,36,51 minutes past the hour)

Wind Speed:	6.8 kts (3.5 m/s)
Max Wind Speed:	8.4 kts (4.3 m/s)
Wind Direction:	262° (W)
Air Temperature:	37.9 °F (3.3 °C)
Wind Chill:	32.2 °F (0.1 °C)
Dew Point:	32.5 °F (0.3 °C)
Relative Humidity:	80.4 %
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	301	1800	6.0	7.6	8.6	249	37.2	32.1	81.5
2020	301	1700	8.4	9.3	10.9	278	36.9	32.7	84.6
2020	301	1600	6.4	7.4	10.3	263	36.5	32.9	86.5
2020	301	1500	4.5	6.2	8.4	281	35.6	33.3	91.2
2020	301	1400	2.5	4.5	8.6	276	35.2	34.0	95.2
2020	301	1300	8.0	9.1	10.7	297	34.2	32.6	94.1
2020	301	1200	9.5	11.1	11.1	302	33.8	33.1	97.3
2020	301	1100	8.7	10.1	13.2	317	34.3	34.4	100.2
2020	301	1000	9.5	10.3	13.0	297	35.1	35.1	100.2
2020	301	0900	6.4	8.0	9.7	313	35.6	35.7	100.2
2020	301	0800	8.2	9.1	9.3	318	36.3	35.5	96.7
2020	301	0700	7.8	9.3	11.5	315	36.1	35.8	98.8
2020	301	0600	7.4	8.7	10.1	326	35.6	35.4	99.3
2020	301	0500	8.9	10.3	11.5	317	36.0	34.7	95.2
2020	301	0400	8.2	9.3	12.8	303	37.0	33.5	86.9
2020	301	0300	6.0	7.2	10.1	344	38.5	34.3	84.7
2020	301	0200	10.9	12.6	13.0	334	39.0	32.8	78.2
2020	301	0100	13.0	14.2	14.2	336	38.7	32.5	78.3

Note: Peak wind is max wind gust during entire hour

Click here for today's 2-minute data: 20201027.04t.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