NOAA - Great Lakes Environmental Research Laboratory

Real-Time Meteorological Observation Network
South Haven, MI (SVNM4) 42° 24´ 05" N, 86° 17´ 20" W

See Metadata File for full description of instruments and parameters, as well as site maps. See also rtmon status, webcam status

Conditions at 9:30 pm EST on 12/03/2020 (DOY 339 02:30 GMT)
(Updated at about 02,17,32,47 minutes past the hour)

Wind Speed:	24.5 kts (12.6 m/s)
Max Wind Speed:	26.6 kts (13.7 m/s)
Wind Direction:	236° (SW)
Air Temperature:	42.3 °F (5.7 °C)
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 2X per hour)
Webcam Location & Info

12-hr animations: 1 2 3 4
Previous 48 images: 1 2 3 4
All Images (past 10 days)

----- Previous 18 Hours (at top of hour) [English] [Metric] -----
YEAR	DOY	EST	Wind Spd kts	Wind Gust kts	Peak Wind kts	Wind Dir deg	Air Tmp F	Wind Chill F
2020	338	2100	22.6	24.9	29.5	228	42.3	-99.0
2020	338	2000	22.0	24.1	29.7	231	43.2	-99.0
2020	338	1900	22.2	25.1	28.4	225	43.5	-99.0
2020	338	1800	19.8	21.8	27.8	211	42.1	-99.0
2020	338	1700	17.1	19.1	23.9	223	41.4	-99.0
2020	338	1600	15.4	16.9	20.2	222	40.6	-99.0
2020	338	1500	15.6	17.3	19.2	241	39.2	30.0
2020	338	1400	16.9	20.2	21.0	225	39.2	29.6
2020	338	1300	17.3	19.4	22.9	218	38.8	29.0
2020	338	1200	18.9	20.6	22.9	222	38.8	28.6
2020	338	1100	21.0	23.7	24.3	229	39.0	28.3
2020	338	1000	20.6	24.5	25.5	221	39.0	28.3
2020	338	0900	19.1	21.4	24.5	213	39.6	29.5
2020	338	0800	18.1	20.6	22.9	223	40.3	-99.0
2020	338	0700	19.8	23.1	23.1	218	40.6	-99.0
2020	338	0600	18.5	20.8	22.0	223	41.0	-99.0
2020	338	0500	19.1	20.8	23.1	221	41.4	-99.0
2020	338	0400	16.9	20.0	22.6	227	41.7	-99.0

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: 20201204.08t.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 Special thanks to ATON CG Group Muskegon, 9th USCG Group, State of Michigan
Historic Preservation Office, and the Michigan Maritime Museum in South Haven.

Additional Great Lakes Meteorological Observations

Real-Time Meteorological Observation NetworkSouth Haven, MI (SVNM4) 42° 24´ 05" N, 86° 17´ 20" W