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Real-Time Meteorological Observation Network
Thunder Bay Island, MI  (TBIM4)  45° 02´ 05" N,   83° 11´ 39" W

See Metadata File for full description of instruments and parameters, as well as site maps. See also rtmon status, webcam status
Conditions at 6:30 pm EST on 03/02/2026 (DOY 061 23:30 GMT)
(Updated every 30 minutes)
Wind Speed:   19.6 kts   (10.1 m/s)
Max Wind Speed:   21.6 kts   (11.1 m/s)
Wind Direction:   186° (S)
Air Temperature:   28.4 °F   (-2.0 °C)
Wind Chill:   14.5 °F   (-9.7 °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 hourly)

[Live Webcam Image from Thunder Bay Island, MI Met Station Camera 1]

[Live Webcam Image from Thunder Bay Island, MI Met Station Camera 2]

[Live Webcam Image from Thunder Bay Island, MI Met Station Camera 3]

[Live Webcam Image from Thunder Bay Island, MI Met Station Camera 4]

[Live Webcam Image from Thunder Bay Island, MI Met Station Camera 5]

24-hr animations:  1  2  3  4  5
Previous 48 images:  1  2  3  4  5
All Images (past 10 days)

----- Previous 18 Hours (at top of hour)  [English] [Metric] -----
YEARDOY EST Wind
Spd
kts 		Wind
Gust
kts 		Peak
Wind
kts 		Wind
Dir
deg 		Air
Tmp
F 		Wind
Chill
F
20260611800 20.6 23.3 23.3 190 28.0 13.7
20260611700 22.6 25.9 26.4 179 27.3 12.2
20260611600 21.6 24.7 27.6 181 27.3 12.5
20260611500 23.5 25.7 27.0 178 26.8 11.2
20260611400 20.0 22.0 26.2 175 26.2 11.5
20260611300 16.3 18.3 24.1 179 25.7 12.1
20260611200 12.4 14.6 19.1 193 24.6 12.4
20260611100 12.2 13.2 15.6 197 23.0 10.5
20260611000 12.6 14.4 15.9 204 21.4 8.2
20260610900 15.2 16.7 16.7 210 19.6 4.6
20260610800 15.6 17.1 18.3 221 18.3 2.8
20260610700 14.6 16.7 18.7 215 18.3 3.3
20260610600 13.0 14.6 17.5 235 17.2 2.7
20260610500 14.4 17.7 19.1 216 18.1 3.2
20260610400 14.8 16.5 19.4 218 18.1 3.0
20260610300 17.3 19.6 19.6 212 18.7 2.5
20260610200 13.6 15.0 19.1 222 18.3 3.8
20260610100 14.4 16.1 16.1 225 18.7 3.8
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

      right arrow Click here for recent 2-minute daily data: 20260302.10t.txt.txt, data format (metadata)
      right arrow Click here for past data: 2026 | Archive

The NDBC station ID for this station is: TBIM4
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 NWS, Thunder Bay National Marine Sanctuary (TBNMS), and 9th District USCG.


Additional Great Lakes Meteorological Observations

» NWS, Grand Rapids Office: Near-Realtime Marine Weather, includes current conditions and forecasts
» NWS, White Lake Office: Near-Realtime Marine Weather, includes current conditions and forecasts
» NDBC Great Lakes ImageMap showing U.S. and Canadian Buoys and C-MAN Stations
» NOAA CoastWatch Great Lakes NOAAPORT Data, includes all station types
» NOAA's NowCoast: Web mapping portal to real-time coastal observations
» Winds courtesy of iWindsurf.com
» NWS Great Lakes Marine Text Forecasts by Zone
» Links to Great Lakes Water Temperature, Wind/Wave Data, & Water Levels
» GLIN: Great Lakes Information Network

Contact:
General Information & Media Inquiries:
oar.glerl.www@noaa.gov
(734) 741-2235 		Data Inquiries:
oar.glerl.data@noaa.gov