Station List

Hurricane Symbol View the latest observations near Atlantic Tropical Storm Fay, East Pacific Tropical Storm Odalys and East Pacific Tropical Depression Seventeen-E.

Station 45183 - Sleeping Bear Dunes Image indicating link to RSS feed of recent meteorological observations for station 45183

Owned by National Park Service - Sleeping Bear Dunes
Maintained by University of Wisconsin-Milwaukee
Moored Buoy
44.982 N 85.831 W (44°58'54" N 85°49'51" W)

Site elevation: 176 m above mean sea level
Air temp height: 2 m above site elevation
Anemometer height: 2 m above site elevation
Barometer elevation: 178 m above mean sea level
Sea temp depth: 1 m below water line

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 45183

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 45183 as of
(7:30 pm EDT)
2330 GMT on 09/20/2026:
Note: This report is more than two hours old
     

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 ( 50 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 15.5 kts
5-day plot - Wind Gust Wind Gust (GST): 21.4 kts
5-day plot - Wave Height Wave Height (WVHT): 2.6 ft
5-day plot - Dominant Wave Period Dominant Wave Period (DPD): 5 sec
5-day plot - Mean Wave Direction Mean Wave Direction (MWD): N ( 354 deg true )
5-day plot - Atmospheric Pressure Atmospheric Pressure (PRES):30.24 in
5-day plot - Air Temperature Air Temperature (ATMP): 63.1 °F
5-day plot - Water Temperature Water Temperature (WTMP): 64.8 °F
5-day plot - Dew Point Dew Point (DEWP): 55.2 °F
5-day plot - Wind Speed at 10 Meters Wind Speed at 10 meters (WSPD10M): 19.4 kts
5-day plot - Wind Speed at 20 Meters Wind Speed at 20 meters (WSPD20M): 21.4 kts
5-day plot - Wind Speed, Wind Gust and Atmospheric Pressure Combined plot of Wind Speed, Gust, and Air Pressure
Previous observations
TIME
(EDT)		 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 07:00 pm NE 17.5 21.4 2.3 5- N30.24+0.04 63.1 64.8 56.3---
2026-09-20 06:30 pm NE 17.5 21.4 2.6 5- N30.22- 63.1 64.8 56.7---
2026-09-20 06:00 pmENE 17.5 21.4 2.6 5- N30.22+0.03 63.0 64.8 57.2---
2026-09-20 05:30 pmENE 19.4 23.3 3.3 5- N30.22- 62.4 64.8 58.1---
2026-09-20 05:00 pmENE 19.4 23.3 3.3 5- N30.21+0.02 62.6 64.8 59.4---
2026-09-20 04:30 pm NE 19.4 27.2 3.3 4- N30.19- 62.6 64.9 59.7---
2026-09-20 04:00 pmENE 21.4 27.2 3.3 5- N30.19+0.00 62.6 64.9 60.4---
2026-09-20 03:30 pmENE 21.4 25.3 3.0 5- N30.19- 63.0 64.9 60.6---
2026-09-20 03:00 pmENE 19.4 23.3 2.6 5- N30.19+0.00 62.8 65.1 60.3---
2026-09-20 02:30 pmENE 19.4 25.3 2.3 5-NNW30.19- 63.0 65.3 60.4---
2026-09-20 02:00 pm NE 17.5 21.4 2.3 5-NNW30.19+0.01 63.0 65.3 60.4---
2026-09-20 01:30 pm NE 17.5 19.4 2.3 5-NNW30.19- 62.6 65.3 60.4---
2026-09-20 01:00 pm NE 17.5 21.4 2.3 4-NNW30.19+0.02 63.3 65.3 60.8---
2026-09-20 12:30 pmNNE 15.5 17.5 2.3 5-NNW30.19- 63.9 65.3 59.7---
2026-09-20 12:00 pmENE 13.6 15.5 2.3 5-NNW30.19+0.05 63.7 65.1 59.9---
2026-09-20 11:30 am NE 11.7 13.6 2.3 5-NNW30.18- 63.7 65.1 60.1---
2026-09-20 11:00 amENE 11.7 15.5 2.6 5-NNW30.18+0.05 63.1 65.1 60.3---
2026-09-20 10:30 am NE 15.5 19.4 3.0 4- N30.17- 62.8 64.9 60.6---
2026-09-20 10:00 am NE 17.5 19.4 3.0 4- N30.16+0.06 62.6 65.1 60.6---
2026-09-20 09:30 amENE 15.5 19.4 2.6 4- N30.16- 63.3 65.1 60.8---
2026-09-20 09:00 amENE 17.5 21.4 2.6 4- N30.14+0.05 63.0 65.1 60.8---
2026-09-20 08:30 amENE 17.5 23.3 2.6 4- N30.13- 63.5 65.3 61.7---
2026-09-20 08:00 am NE 17.5 25.3 2.3 4- N30.13+0.05 63.3 65.5 60.8---
2026-09-20 07:30 am NE 17.5 19.4 2.3 4- N30.12- 63.7 65.5 60.1---
2026-09-20 07:00 am NE 15.5 21.4 2.0 4- N30.11+0.03 64.2 65.7 60.8---
2026-09-20 06:30 amENE 17.5 21.4 0.7--NNW30.09- 63.5 65.7 61.2---
2026-09-20 06:00 amENE 15.5 19.4 0.3--NNW30.09+0.00 63.7 65.7 63.7---
2026-09-20 05:30 am E 7.8 7.8 0.3-- N30.08- 63.3 65.7 63.3---
2026-09-20 05:00 amENE 7.8 9.7 0.3-- N30.08+0.00 63.5 65.7 63.5---
2026-09-20 04:30 am E 5.8 7.8 0.7-- N30.08- 63.5 65.7 63.5---
2026-09-20 04:00 amESE 3.9 5.8 0.7-- N30.08-0.01 63.3 65.7 63.3---
2026-09-20 03:30 am E 5.8 5.8 0.7-- N30.08- 63.5 65.7 63.5---
2026-09-20 03:00 amESE 5.8 5.8 0.7-- N30.09+0.00 63.5 65.7 63.3---
2026-09-20 02:30 amESE 3.9 3.9 0.3-- N30.08- 63.1 65.7 62.2---
2026-09-20 02:00 am SE 3.9 5.8 0.3-- N30.08-0.03 63.5 65.7 61.7---
2026-09-20 01:30 amSSE 1.9 1.9 0.3-- N30.09- 63.5 65.7 61.0---
2026-09-20 01:00 amSSE 3.9 5.8 0.3--NNW30.09-0.01 63.9 65.7 61.0---
2026-09-20 12:30 am S 5.8 5.8 0.3-- N30.09- 64.0 65.8 61.0---
2026-09-20 12:00 am S 5.8 7.8 0.3-- N30.09-0.01 64.6 65.8 61.2---
2026-09-19 11:30 pm E 3.9 5.8 0.3-- N30.09- 65.3 65.8 60.3---
2026-09-19 11:00 pmENE 5.8 7.8 0.3-- N30.10+0.01 65.3 65.8 60.8---
2026-09-19 10:30 pmENE 5.8 7.8 0.3-- N30.10- 64.6 65.8 60.1---
2026-09-19 10:00 pmENE 5.8 7.8 0.3-- N30.10+0.01 64.4 66.0 60.1---
Wave Summary
for 45183 as of (7:30 pm EDT)
2330 GMT on 09/20/2026:

Note: This report is more than two hours old

These wave data are displayed in rounded times.

     

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 - Significant Wave Height Significant Wave Height (WVHT): 2.6 ft
Previous observations
TIME
(EDT)		 5-day plot - Wave Height
WVHT
ft		 5-day plot - Swell Height
SwH
ft		 5-day plot - Swell Period
SwP
sec		 5-day plot - Swell Direction
SwD
 		 5-day plot - Wind Wave Height
WWH
ft		 5-day plot - Wind Wave Period
WWP
sec		 5-day plot - Wind Wave Direction
WWD
 		 5-day plot - Wave Steepness
STEEPNESS
 		 5-day plot - Average Wave Period
APD
sec
2026-09-20 07:00 pm 2.3------ N/A-
2026-09-20 06:30 pm 2.6------ N/A-
2026-09-20 06:00 pm 2.6------VERY_STEEP-
2026-09-20 05:30 pm 3.0------VERY_STEEP-
2026-09-20 05:00 pm 3.3------VERY_STEEP-
2026-09-20 04:30 pm 3.3------VERY_STEEP-
2026-09-20 04:00 pm 3.0------VERY_STEEP-
2026-09-20 03:30 pm 3.0------VERY_STEEP-
2026-09-20 03:00 pm 2.6------VERY_STEEP-
2026-09-20 02:30 pm 2.3------ N/A-
2026-09-20 02:00 pm 2.3------ N/A-
2026-09-20 01:30 pm 2.3------ N/A-
2026-09-20 01:00 pm 2.3------ N/A-
2026-09-20 12:30 pm 2.3------ N/A-
2026-09-20 12:00 pm 2.3------ N/A-
2026-09-20 11:30 am 2.3------ N/A-
2026-09-20 11:00 am 2.6------ N/A-
2026-09-20 10:30 am 3.0------VERY_STEEP-
2026-09-20 10:00 am 3.0------VERY_STEEP-
2026-09-20 09:30 am 2.6------VERY_STEEP-
2026-09-20 09:00 am 2.6------VERY_STEEP-
2026-09-20 08:30 am 2.6------VERY_STEEP-
2026-09-20 08:00 am 2.3------ N/A-
2026-09-20 07:30 am 2.3------ N/A-
2026-09-20 07:00 am 2.0------ N/A-
2026-09-20 06:30 am 0.7------ N/A-
2026-09-20 06:00 am 0.3------ N/A-
2026-09-20 05:30 am 0.3------ N/A-
2026-09-20 05:00 am 0.3------ N/A-
2026-09-20 04:30 am 0.7------ N/A-
2026-09-20 04:00 am 0.7------ N/A-
2026-09-20 03:30 am 0.7------ N/A-
2026-09-20 03:00 am 0.7------ N/A-
2026-09-20 02:30 am 0.3------ N/A-
2026-09-20 02:00 am 0.3------ N/A-
2026-09-20 01:30 am 0.3------ N/A-
2026-09-20 01:00 am 0.3------ N/A-
2026-09-20 12:30 am 0.3------ N/A-
2026-09-20 12:00 am 0.3------ N/A-
2026-09-19 11:30 pm 0.3------ N/A-
2026-09-19 11:00 pm 0.3------ N/A-
2026-09-19 10:30 pm 0.3------ N/A-
2026-09-19 10:00 pm 0.3------ N/A-
Ocean Conditions at 45183 as of
(7:30 pm EDT)
2330 GMT on 09/20/2026:
Note: This report is more than two hours old

These oceanographic data are displayed in rounded times.

     

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

Depth (DEPTH): 6.6 ft
5-day plot - Ocean Temperature Ocean Temperature (OTMP):64.74 °F
Previous observations
TIME
(EDT)		 DEPTH
ft		 5-day plot - Ocean Temperature
OTMP
°F		 5-day plot - Conductivity
COND
mS/cm		 5-day plot - Salinity
SAL
psu		 5-day plot - Oxygen Saturation
O2%
%		 5-day plot - Oxygen Concentration
O2PPM
ppm		 5-day plot - Chlorophyll
CLCON
ug/l		 5-day plot - Turbidity
TURB
FTU		 5-day plot - pH
PH
 		 5-day plot - Eh
EH
mV
2026-09-20 07:00 pm 6.664.74--------
2026-09-20 06:30 pm 6.664.74--------
2026-09-20 06:00 pm 6.664.81--------
2026-09-20 05:30 pm 6.664.81--------
2026-09-20 05:00 pm 6.664.81--------
2026-09-20 04:30 pm 6.664.81--------
2026-09-20 04:00 pm 6.664.98--------
2026-09-20 03:30 pm 6.664.98--------
2026-09-20 03:00 pm 6.664.98--------
2026-09-20 02:30 pm 6.664.98--------
2026-09-20 02:00 pm 6.665.30--------
2026-09-20 01:30 pm 6.665.30--------
2026-09-20 01:00 pm 6.665.30--------
2026-09-20 12:30 pm 6.665.30--------
2026-09-20 12:00 pm 6.665.17--------
2026-09-20 11:30 am 6.665.17--------
2026-09-20 11:00 am 6.665.17--------
2026-09-20 10:30 am 6.665.17--------
2026-09-20 10:00 am 6.665.08--------
2026-09-20 09:30 am 6.665.08--------
2026-09-20 09:00 am 6.665.08--------
2026-09-20 08:30 am 6.665.08--------
2026-09-20 08:00 am 6.665.52--------
2026-09-20 07:30 am 6.665.52--------
2026-09-20 07:00 am 6.665.52--------
2026-09-20 06:30 am 6.665.52--------
2026-09-20 06:00 am 6.665.73--------
2026-09-20 05:30 am 6.665.73--------
2026-09-20 05:00 am 6.665.79--------
2026-09-20 04:30 am 6.665.79--------
2026-09-20 04:00 am 6.665.79--------
2026-09-20 03:30 am 6.665.79--------
2026-09-20 03:00 am 6.665.79--------
2026-09-20 02:30 am 6.665.79--------
2026-09-20 02:00 am 6.665.79--------
2026-09-20 01:30 am 6.665.75--------
2026-09-20 01:00 am 6.665.75--------
2026-09-20 12:30 am 6.665.75--------
2026-09-20 12:00 am 6.665.75--------
2026-09-19 11:30 pm 6.665.75--------
2026-09-19 11:00 pm 6.665.75--------
2026-09-19 10:30 pm 6.665.75--------
2026-09-19 10:00 pm 6.665.98--------
Solar Radiation Conditions at 45183 as of
(7:30 pm EDT)
2330 GMT on 09/20/2026:
Note: This report is more than two hours old
     

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 - Short Wave Radiation 1 Short Wave Radiation 1 (SRAD1): 10.6watts/meter2
Previous observations
TIME
(EDT)		 5-day plot - Short Wave Radiation 1
SRAD1
w/m2		 5-day plot - Short Wave Radiation 2
SRAD2
w/m2		 5-day plot - Long Wave Radiation
LRAD
w/m2
2026-09-20 07:00 pm 56.9--
2026-09-20 06:30 pm 63.2--
2026-09-20 06:00 pm 116.8--
2026-09-20 05:30 pm 110.4--
2026-09-20 05:00 pm 148.7--
2026-09-20 04:30 pm 157.9--
2026-09-20 04:00 pm 171.6--
2026-09-20 03:30 pm 564.8--
2026-09-20 03:00 pm 554.6--
2026-09-20 02:30 pm 336.7--
2026-09-20 02:00 pm 389.0--
2026-09-20 01:30 pm 454.5--
2026-09-20 01:00 pm 570.3--
2026-09-20 12:30 pm 664.9--
2026-09-20 12:00 pm 580.1--
2026-09-20 11:30 am 568.4--
2026-09-20 11:00 am 423.0--
2026-09-20 10:30 am 405.8--
2026-09-20 10:00 am 283.3--
2026-09-20 09:30 am 333.4--
2026-09-20 09:00 am 82.2--
2026-09-20 08:30 am 111.4--
2026-09-20 08:00 am 29.0--
2026-09-20 07:30 am 1.6--
2026-09-20 07:00 am 0.0--
2026-09-20 06:30 am 0.0--
2026-09-20 06:00 am 0.8--
2026-09-20 05:30 am 0.0--
2026-09-20 05:00 am 0.0--
2026-09-20 04:30 am 0.0--
2026-09-20 04:00 am 0.0--
2026-09-20 03:30 am 0.0--
2026-09-20 03:00 am 0.0--
2026-09-20 02:30 am 0.0--
2026-09-20 02:00 am 0.0--
2026-09-20 01:30 am 0.0--
2026-09-20 01:00 am 0.0--
2026-09-20 12:30 am 0.0--
2026-09-20 12:00 am 0.0--
2026-09-19 11:30 pm 0.0--
2026-09-19 11:00 pm 0.0--
2026-09-19 10:30 pm 0.0--
2026-09-19 10:00 pm 0.0--