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 0:20 am CST on 11/19/2019 (DOY 323 06:20 GMT)
(Updated at about 06,21,36,51 minutes past the hour)

Wind Speed:	9.9 kts (5.1 m/s)
Max Wind Speed:	10.7 kts (5.5 m/s)
Wind Direction:	211° (SSW)
Air Temperature:	37.0 °F (2.8 °C)
Wind Chill:	29.4 °F (-1.5 °C)
Dew Point:	32.9 °F (0.5 °C)
Relative Humidity:	84.8 %
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	CST	Wind Spd kts	Wind Gust kts	Peak Wind kts	Wind Dir deg	Air Tmp F	Wind Chill F	Dew Pt F	Rel Hum %
2019	323	0000	11.5	12.1	14.4	205	37.2	28.9	33.9	87.8
2019	322	2300	6.2	7.8	13.2	202	37.8	32.3	35.3	90.7
2019	322	2200	4.5	6.0	6.8	214	38.1	34.1	34.9	88.1
2019	322	2100	5.6	6.2	7.4	258	38.3	33.4	35.0	87.7
2019	322	2000	7.4	8.2	8.2	262	38.7	32.7	34.4	84.4
2019	322	1900	4.5	4.7	9.3	132	38.3	34.4	37.8	98.0
2019	322	1800	4.5	5.2	6.0	158	38.1	34.1	37.3	96.7
2019	322	1700	5.1	5.2	6.2	128	37.9	33.4	37.3	97.5
2019	322	1600	4.5	4.9	5.4	101	37.9	33.9	37.3	97.6
2019	322	1500	3.9	3.9	4.9	061	37.9	34.5	37.1	96.7
2019	322	1400	2.3	2.5	4.5	318	38.5	38.5	36.4	92.3
2019	322	1300	2.9	3.1	3.9	321	37.9	35.6	36.4	94.2
2019	322	1200	5.2	5.6	6.0	309	37.4	32.6	36.1	94.8
2019	322	1100	6.4	7.0	8.0	303	37.0	31.3	35.7	94.9
2019	322	1000	7.2	8.0	9.1	307	36.7	30.4	35.6	95.7
2019	322	0900	8.2	8.7	9.5	298	36.3	29.4	35.2	95.7
2019	322	0800	7.2	8.4	9.3	305	35.8	29.3	35.0	96.9
2019	322	0700	8.6	9.1	10.1	316	35.6	28.3	34.7	96.6

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

Click here for today's 2-minute data: 20191119.04t.txt, data format (metadata)
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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

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