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 4:36 pm CDT on 05/30/2020 (DOY 151 21:36 GMT)
(Updated at about 06,21,36,51 minutes past the hour)

Wind Speed:	10.1 kts (5.2 m/s)
Max Wind Speed:	11.5 kts (5.9 m/s)
Wind Direction:	66° (ENE)
Air Temperature:	58.6 °F (14.8 °C)
Dew Point:	54.3 °F (12.4 °C)
Relative Humidity:	85.2 %
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	151	1600	10.1	11.5	13.4	063	59.4	53.2	79.9
2020	151	1500	9.3	9.9	11.7	090	58.8	54.0	83.7
2020	151	1400	8.7	9.1	10.3	097	58.6	54.9	87.1
2020	151	1300	7.6	8.4	10.3	113	59.4	55.5	86.8
2020	151	1200	7.0	7.8	9.5	103	59.0	55.6	88.3
2020	151	1100	7.6	8.6	9.5	054	58.3	55.5	90.5
2020	151	1000	4.1	4.3	7.8	040	58.3	54.9	88.4
2020	151	0900	5.1	5.2	5.8	010	57.9	54.5	88.1
2020	151	0800	6.0	6.6	8.0	323	57.7	54.7	89.3
2020	151	0700	7.8	8.2	8.9	319	57.4	54.4	89.7
2020	151	0600	9.1	9.9	10.9	323	57.2	53.8	88.1
2020	151	0500	10.7	12.2	13.0	320	57.7	53.4	85.4
2020	151	0400	10.5	11.5	14.2	313	58.3	52.8	81.9
2020	151	0300	10.9	11.9	13.8	312	59.4	52.4	77.5
2020	151	0200	11.1	12.4	14.6	315	59.7	51.8	74.7
2020	151	0100	11.1	12.1	15.4	307	60.8	50.2	67.8
2020	151	0000	9.5	10.3	14.2	311	61.3	49.7	65.2
2020	150	2300	10.3	10.9	12.4	308	62.2	49.3	62.3

Note: Peak wind is max wind gust during entire hour

Click here for today's 2-minute data: 20200530.04t.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