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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

Large icon indicates selected station.
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
(10:40 pm CDT on 09/20/2026)
0340 GMT on 09/21/2026:
     

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):SSE ( 160 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 1.0 kts
5-day plot - Air Temperature Air Temperature (ATMP): 46.0 °F
5-day plot - Dew Point Dew Point (DEWP): 42.3 °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
2026-09-20 10:20 pm S 1.9------- 45.9- 41.2---
2026-09-20 10:00 pm SW 2.9------- 46.0- 41.4---
2026-09-20 09:40 pmSSW 1.0------- 46.4- 41.5---
2026-09-20 09:20 pm SW 1.9------- 46.8- 41.4---
2026-09-20 09:00 pm SW 2.9------- 47.3- 41.5---
2026-09-20 08:40 pm SW 1.9------- 47.7- 41.4---
2026-09-20 08:20 pm W 1.9------- 48.2- 41.9---
2026-09-20 08:00 pm W 1.9------- 48.2- 42.1---
2026-09-20 07:40 pm W 1.9------- 49.1- 42.6---
2026-09-20 07:20 pmENE 2.9------- 50.5- 42.8---
2026-09-20 07:00 pm NW 1.9------- 51.8- 41.7---
2026-09-20 06:40 pmNNW 2.9------- 53.1- 41.9---
2026-09-20 06:20 pm N 5.1------- 54.3- 42.8---
2026-09-20 06:00 pmNNW 2.9------- 55.4- 42.6---
2026-09-20 05:40 pm N 2.9------- 55.9- 43.2---
2026-09-20 05:20 pmNNE 1.9------- 56.7- 42.6---
2026-09-20 05:00 pmNNW 5.1------- 57.0- 43.0---
2026-09-20 04:40 pmNNW 5.1------- 57.0- 42.4---
2026-09-20 04:20 pmNNE 7.0------- 56.8- 42.6---
2026-09-20 04:00 pm W 6.0------- 57.2- 42.6---
2026-09-20 03:40 pm N 5.1------- 57.0- 43.5---
2026-09-20 03:20 pmNNW 1.9------- 56.7- 41.9---
2026-09-20 03:00 pm W 7.0------- 56.8- 43.9---
2026-09-20 02:40 pmWNW 9.9------- 56.7- 43.0---
2026-09-20 02:20 pm N 7.0------- 56.7- 43.0---
2026-09-20 02:00 pmWNW 4.1------- 56.5- 42.6---
2026-09-20 01:40 pm N 7.0------- 56.3- 43.7---
2026-09-20 01:20 pmWNW 7.0------- 56.3- 44.4---
2026-09-20 01:00 pmNNW 6.0------- 55.8- 44.6---
2026-09-20 12:40 pmNNW 7.0------- 55.4- 45.1---
2026-09-20 12:20 pm NW 4.1------- 55.0- 45.9---
2026-09-20 12:00 pm NW 5.1------- 55.8- 46.9---
2026-09-20 11:40 amNNW 6.0------- 56.1- 45.9---
2026-09-20 11:20 am N 5.1------- 55.9- 46.9---
2026-09-20 11:00 amNNW 6.0------- 56.8- 45.9---
2026-09-20 10:40 am N 2.9------- 56.3- 46.4---
2026-09-20 10:20 amNNE 5.1------- 56.3- 47.3---
2026-09-20 10:00 amNNW 2.9------- 55.4- 47.1---
2026-09-20 09:40 am N 4.1------- 55.4- 47.1---
2026-09-20 09:20 am NW 5.1------- 55.8- 47.3---
2026-09-20 09:00 am N 6.0------- 56.1- 47.7---
2026-09-20 08:40 amNNE 2.9------- 55.9- 47.8---
2026-09-20 08:20 am N 1.9------- 55.4- 47.8---
2026-09-20 08:00 amNNE 5.1------- 55.8- 48.4---
2026-09-20 07:40 am N 6.0------- 55.8- 48.6---
2026-09-20 07:20 amNNW 4.1------- 55.6- 48.7---
2026-09-20 07:00 am N 5.1------- 55.8- 48.7---
2026-09-20 06:40 am N 5.1------- 56.1- 49.3---
2026-09-20 06:20 amNNW 4.1------- 57.0- 50.4---
2026-09-20 06:00 am N 2.9------- 57.0- 50.7---
2026-09-20 05:40 am NW 1.9------- 57.6- 51.3---
2026-09-20 05:20 am NW 1.9------- 57.4- 51.8---
2026-09-20 05:00 am W 4.1------- 57.4- 52.3---
2026-09-20 04:40 am S 1.0------- 56.3- 52.5---
2026-09-20 04:20 am SW 1.9------- 56.3- 52.0---
2026-09-20 04:00 am SW 2.9------- 56.7- 52.0---
2026-09-20 03:40 am SW 7.0------- 57.2- 52.5---
2026-09-20 03:20 am SW 4.1------- 57.4- 52.0---
2026-09-20 03:00 am SW 4.1------- 57.4- 51.6---
2026-09-20 02:40 am SW 5.1------- 57.4- 51.3---
2026-09-20 02:20 am SW 6.0------- 57.9- 51.8---
2026-09-20 02:00 am SW 2.9------- 57.2- 52.7---
2026-09-20 01:40 amWSW 5.1------- 57.6- 52.9---
2026-09-20 01:20 amSSE 1.9------- 56.7- 52.2---
2026-09-20 01:00 am SW 4.1------- 56.1- 52.2---
2026-09-20 12:40 amWSW 5.1------- 55.9- 52.2---
2026-09-20 12:20 am SW 4.1------- 55.6- 51.8---
2026-09-20 12:00 am SW 4.1------- 55.6- 51.8---