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Station GRCM4 - GLRC Observatory Image indicating link to RSS feed of recent meteorological observations for station GRCM4

Station operated by Michigan Technological University
Coastal Marine Station
47.121 N 88.545 W (47°7'14" N 88°32'43" W)

Site elevation: 183 m above mean sea level
Air temp height: 185.82 m above site elevation
Anemometer height: 185.82 m above site elevation
Barometer elevation: 185.82 m above mean sea level

Search And Rescue (SAR) Data

Meteorological Observations from Nearby Stations and Ships Image indicating link to RSS feed of recent meteorological observations near station GRCM4

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yellow diamond Stations with recent data
red diamond Stations with no data in last 8 hours
(24 hours for tsunami stations)

Conditions at GRCM4 as of
(4:40 am CDT)
0940 GMT on 09/25/2026:
     

Click on the graph icon in the table below to see a time series plot of the last five days of that observation.

5-day plot - Wind Direction Wind Direction (WDIR): NE ( 40 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 2.9 kts
5-day plot - Air Temperature Air Temperature (ATMP): 51.6 °F
5-day plot - Dew Point Dew Point (DEWP): 49.3 °F
5-day plot - Wind Chill Wind Chill (CHILL): 51.3 °F
5-day plot - Wind Speed at 10 Meters Wind Speed at 10 meters (WSPD10M): 1.9 kts
5-day plot - Wind Speed at 20 Meters Wind Speed at 20 meters (WSPD20M): 1.9 kts
Previous observations
TIME
(CDT)		 5-day plot - Wind Direction
WDIR
 		 5-day plot - Wind Speed
WSPD
kts		 5-day plot - Wind Gust
GST
kts		 5-day plot - Wave Height
WVHT
ft		 5-day plot - Dominant Wave Period
DPD
sec		 5-day plot - Average Wave Period
APD
sec		 5-day plot - Mean Wave Direction
MWD
 		 5-day plot - Atmospheric Pressure
PRES
in		 5-day plot - Pressure Tendency
PTDY
in		 5-day plot - Air Temperature
ATMP
°F		 5-day plot - Water Temperature
WTMP
°F		 5-day plot - Dew Point
DEWP
°F		 5-day plot - Salinity
SAL
psu		 5-day plot - Visibility
VIS
nmi		 5-day plot - Tide (above MLLW)
TIDE
ft
2026-09-25 04:20 amWNW 1.9------- 51.8- 49.1---
2026-09-25 04:00 amWNW 1.9------- 52.0- 49.3---
2026-09-25 03:40 am N 1.9------- 52.7- 49.8---
2026-09-25 03:20 am E 1.0------- 53.1- 50.4---
2026-09-25 03:00 amNNE 2.9------- 53.4- 50.9---
2026-09-25 02:40 amENE 1.9------- 53.4- 51.1---
2026-09-25 02:20 amENE 1.9------- 53.6- 51.3---
2026-09-25 02:00 amENE 1.9------- 54.3- 52.0---
2026-09-25 01:40 am N 1.0------- 54.3- 52.0---
2026-09-25 01:20 am N 1.9------- 54.5- 52.2---
2026-09-25 01:00 amWNW 1.9------- 55.0- 52.3---
2026-09-25 12:40 am- 0.0------- 55.9- 52.9---
2026-09-25 12:20 am NW 1.9------- 56.5- 53.2---
2026-09-25 12:00 amNNW 2.9------- 56.8- 53.4---
2026-09-24 11:40 pmENE 2.9------- 57.2- 53.2---
2026-09-24 10:40 pm E 2.9------- 57.6- 52.9---
2026-09-24 10:20 pmENE 2.9------- 57.9- 52.9---
2026-09-24 10:00 pmENE 1.9------- 57.7- 52.9---
2026-09-24 09:40 pmENE 2.9------- 57.9- 52.9---
2026-09-24 09:20 pmENE 1.9------- 57.9- 53.1---
2026-09-24 09:00 pmENE 4.1------- 58.1- 53.1---
2026-09-24 08:40 pmENE 2.9------- 58.1- 53.1---
2026-09-24 08:20 pm NE 2.9------- 58.1- 53.1---
2026-09-24 08:00 pm NE 1.9------- 58.5- 53.1---
2026-09-24 07:40 pmNNE 5.1------- 58.8- 52.9---
2026-09-24 07:20 pmNNE 4.1------- 59.2- 53.1---
2026-09-24 07:00 pmENE 5.1------- 59.7- 53.1---
2026-09-24 06:40 pm NE 6.0------- 59.9- 53.1---
2026-09-24 06:20 pm NE 6.0------- 60.3- 53.2---
2026-09-24 06:00 pmNNE 7.0------- 60.8- 53.1---
2026-09-24 05:40 pmNNE 8.9------- 61.2- 53.2---
2026-09-24 05:20 pm NE 7.0------- 61.3- 52.9---
2026-09-24 05:00 pm NE 9.9------- 61.3- 52.5---
2026-09-24 04:40 pm NE 8.9------- 61.5- 53.6---
2026-09-24 04:20 pm NE 8.9------- 61.5- 54.0---
2026-09-24 04:00 pm NE 8.0------- 62.2- 54.1---
2026-09-24 03:40 pm NE 7.0------- 62.6- 53.1---
2026-09-24 03:20 pm NE 8.0------- 63.5- 53.6---
2026-09-24 03:00 pm NE 7.0------- 64.2- 52.3---
2026-09-24 02:40 pmNNE 5.1------- 63.9- 51.3---
2026-09-24 02:20 pm NE 8.0------- 64.0- 51.8---
2026-09-24 02:00 pmNNE 7.0------- 64.2- 50.4---
2026-09-24 01:40 pmNNE 7.0------- 63.3- 51.1---
2026-09-24 01:20 pm NE 9.9------- 62.6- 52.0---
2026-09-24 01:00 pm NE 8.0------- 62.2- 52.5---
2026-09-24 12:40 pmNNE 9.9------- 61.3- 53.1---
2026-09-24 12:20 pmNNE 8.0------- 60.1- 53.4---
2026-09-24 12:00 pmNNE 7.0------- 58.5- 52.9---
2026-09-24 11:40 amNNE 8.0------- 57.4- 52.0---
2026-09-24 09:40 amNNE 6.0------- 54.0- 50.2---
2026-09-24 09:20 am NE 5.1------- 53.6- 50.2---
2026-09-24 09:00 amNNE 5.1------- 53.4- 50.2---
2026-09-24 08:40 amNNE 4.1------- 51.6- 50.0---
2026-09-24 08:20 am NE 1.9------- 50.4- 48.7---
2026-09-24 08:00 amENE 1.9------- 49.8- 48.2---
2026-09-24 07:40 amENE 2.9------- 49.6- 47.8---
2026-09-24 07:20 amENE 2.9------- 49.3- 47.5---
2026-09-24 07:00 amENE 2.9------- 49.1- 47.3---
2026-09-24 06:40 amENE 4.1------- 50.5- 48.4---
2026-09-24 06:20 amNNW 4.1------- 50.9- 48.9---
2026-09-24 06:00 am NE 4.1------- 50.4- 48.4---