Skip Navigation Links weather.gov 
NOAA logo-Select to go to the NOAA homepage NDBC Title GraphicClick to go to NDBC home page   Select to go to the NWS homepage
Home About Us Contact Us
 
 
    
    Station List

 Data Access
    Mobile Access
    Classic Maps
         Recent
         DART®
    Obs Search
    Ship Obs Report
    BuoyCAMs
    TAO
    DODS
    OceanSITES
    HF Radar
    OSMC
    Dial-A-Buoy
    RSS Feeds Image indicating link to RSS feed access page
    Web Widget
    Web Data Guide
    Maintenance Schedule
    Station Status Report

 Program Info
    TAO
    DART®
    IOOS®

 Publications
    NDBC PEA
    NDBC FONSI
    NDBC DQC Handbook

 Visitor Information
 
USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.

Hurricane Symbol Storm Special! View the latest observations near East Pacific Tropical Storm Lowell.

Station SRLM4 - Spectacle Reef Light, MI Image indicating link to RSS feed of recent meteorological observations for station SRLM4

Owned and maintained by Great Lakes Environmental Research Laboratory
C-MAN Station
45.773 N 84.137 W (45°46'24" N 84°8'12" W)

Site elevation: 177 m above mean sea level
Anemometer height: 30 m above site elevation

Instruments are owned and maintained by the University of Colorado, Boulder.

Latest NWS Marine Forecast

Search And Rescue (SAR) Data

Meteorological Observations from Nearby Stations and Ships Image indicating link to RSS feed of recent meteorological observations near station SRLM4

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 SRLM4 as of
0600 GMT on 09/24/2020:
     

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): W ( 280 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 7 kts
5-day plot - Air Temperature Air Temperature (ATMP): 59.0 °F
5-day plot - Water Temperature Water Temperature (WTMP): 59.7 °F
5-day plot - Dew Point Dew Point (DEWP): 56.5 °F
5-day plot - Wind Speed at 10 Meters Wind Speed at 10 meters (WSPD10M): 6 kts
5-day plot - Wind Speed at 10 Meters Wind Speed at 20 meters (WSPD20M): 8 kts
Previous observations
5-day plot - Wind Direction 5-day plot - Wind Speed 5-day plot - Wind Gust 5-day plot - Wave Height 5-day plot - Dominant Wave Period 5-day plot - Average Period 5-day plot - Mean Wave Direction 5-day plot - Atmospheric Pressure 5-day plot - Pressure Tendency 5-day plot - Air Temperature 5-day plot - Water Temperature 5-day plot - Dew Point 5-day plot - Salinity 5-day plot - Visibility 5-day plot - Tide (above MLLW)
MM DD TIME
(GMT)		 WDIR WSPD
kts		 GST
kts		 WVHT
ft		 DPD
sec		 APD
sec		 MWD PRES
in		 PTDY
in		 ATMP
°F		 WTMP
°F		 DEWP
°F		 SAL
psu		 VIS
nmi		 TIDE
ft
09240530 WNW 8------- 59.4 59.7 57.0---
09240500  NW 9------- 59.4 59.5 57.0---
09240430  NW 10------- 60.3 59.5 56.7---
09240400  W 9------- 61.7 60.1 56.3---
09240330 WSW 9------- 62.6 60.4 57.2---
09240300  SW 7------- 61.3 60.1 57.6---
09240230  SW 8------- 60.6 59.0 57.0---
09240200 SSW 9------- 61.5 59.9 56.1---
09240130  S 7------- 63.1 60.3 52.7---
09240100  S 4------- 63.5 60.3 52.2---
09240030 SSE 3------- 63.0 60.3 51.6---
09240000 ESE 1------- 63.9 62.4 52.5---
09232330 --------- 65.5 64.2 53.8---
09232300  W 1------- 63.7 64.0 55.8---
09232230 WSW 2------- 63.1 62.2 56.7---
09232200  W 3------- 61.3 62.8 56.8---
09232130 SSW 4------- 62.1 63.7 56.8---
09231600 --------- 52.7 57.2 51.1---
09231530 --------- 52.7 57.0 51.1---
09231500 --------- 52.7 57.4 51.1---
09231430 --------- 52.5 56.1 50.9---
09231400 --------- 52.5 55.8 50.9---
09231330 --------- 52.7 55.4 51.1---
09231300 --------- 52.9 55.6 51.3---
09231230 --------- 52.9 55.2 51.3---
09231200 --------- 53.1 55.2 51.4---
09231130 --------- 53.1 55.4 51.4---
09231100 --------- 53.1 55.2 51.4---
09231030 --------- 53.4 55.4 51.6---
09231000 --------- 53.8 55.8 52.2---
09230930 --------- 55.2 57.2 53.4---
09230900 --------- 55.4 57.4 53.6---
09230830 WNW 6------- 55.6 57.4 53.8---
09230800  NW 7------- 56.1 55.6 54.1---
09230730 WNW 7------- 56.7 55.8 54.5---
09230700 WNW 9------- 56.8 56.1 54.9---
09230630  W 9------- 56.7 56.1 54.3---
09230600  W 10------- 57.0 56.3 54.5---

Description of Measurements

Links which are specific to this station are listed below:

Real Time Data in tabular form for the last forty-five days.

Historical Data & Climatic Summaries for quality controlled data for the current month, previous months, and previous years.