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 8:06 pm CST on 11/16/2019 (DOY 321 02:06 GMT)
(Updated at about 06,21,36,51 minutes past the hour)

Wind Speed:	20.8 kts (10.7 m/s)
Max Wind Speed:	21.8 kts (11.2 m/s)
Wind Direction:	126° (SE)
Air Temperature:	37.6 °F (3.1 °C)
Wind Chill:	26.4 °F (-3.1 °C)
Dew Point:	29.0 °F (-1.7 °C)
Relative Humidity:	70.9 %
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 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	320	2000	20.6	21.8	21.8	129	37.8	26.7	29.1	70.6
2019	320	1900	13.6	15.6	22.0	132	38.3	29.5	32.0	77.9
2019	320	1800	11.1	11.9	17.1	120	38.8	31.1	31.7	75.4
2019	320	1700	11.3	12.2	13.6	114	38.5	30.6	31.3	75.2
2019	320	1600	10.5	10.9	14.6	114	38.3	30.7	31.0	74.6
2019	320	1500	10.9	11.3	13.0	110	38.5	30.7	30.6	73.0
2019	320	1400	9.1	9.7	10.9	102	37.9	30.9	31.2	76.5
2019	320	1300	8.9	9.7	11.5	117	37.6	30.5	30.5	75.4
2019	320	1200	9.7	11.1	11.1	128	36.3	28.6	30.3	78.5
2019	320	1100	11.7	12.8	12.8	136	35.6	26.8	30.7	82.3
2019	320	1000	12.6	13.8	14.6	139	35.2	25.9	31.2	85.2
2019	320	0900	15.0	15.6	16.7	127	34.7	24.3	31.5	88.0
2019	320	0800	16.5	17.5	18.3	118	35.2	24.5	32.6	89.8
2019	320	0700	14.8	15.9	17.7	110	36.1	26.3	32.8	87.5
2019	320	0600	15.0	16.1	16.1	114	36.9	27.1	32.1	82.8
2019	320	0500	12.2	13.6	15.9	109	37.4	28.8	32.5	82.1
2019	320	0400	12.2	13.2	15.6	114	37.9	29.5	33.0	82.3
2019	320	0300	14.8	15.7	15.9	107	38.5	29.3	29.3	69.2

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: 20191117.04t.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