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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 5:30 am EST on 12/24/2025 (DOY 358 10:30 GMT)
(Updated every 30 minutes)
Wind Speed:   4.3 kts   (2.2 m/s)
Max Wind Speed:   8.6 kts   (4.4 m/s)
Wind Direction:   324° (NW)
Air Temperature:   30.2 °F   (-1.0 °C)
Wind Chill:   25.0 °F   (-3.9 °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
20253580500 6.6 12.6 16.1 335 30.4 23.1
20253580400 7.8 15.4 16.9 328 30.4 22.3
20253580300 9.7 17.1 19.6 333 31.5 22.5
20253580200 7.2 17.3 20.8 325 32.0 24.7
20253580100 9.7 16.1 21.8 338 33.3 24.7
20253580000 6.4 12.4 21.8 318 34.2 27.9
20253572300 5.2 12.6 27.0 321 35.8 30.7
20253572200 11.3 18.1 18.1 303 36.1 27.6
20253572100 6.8 11.9 18.3 299 36.7 30.6
20253572000 7.4 12.6 22.6 302 36.7 30.3
20253571800 9.7 18.9 19.8 308 37.2 29.7
20253571700 5.4 9.9 19.2 301 38.3 33.6
20253571600 4.9 9.9 12.1 305 41.7 -99.0
20253571500 7.6 11.5 12.4 290 41.5 -99.0
20253571400 10.1 12.1 13.0 270 38.3 30.8
20253571300 10.5 11.3 12.1 247 34.9 26.4
20253571200 8.2 8.9 13.2 241 34.2 26.7
20253571100 10.7 11.7 12.4 239 33.6 24.7
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: 20251224.10t.txt.txt, data format (metadata)
      right arrow Click here for past data: 2025 | 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