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Hurricane Symbol Storm Special! View the latest observations near Atlantic Tropical Storm Epsilon.

Station MRKA2 - Middle Rock Light, AK Image indicating link to RSS feed of recent meteorological observations for station MRKA2

Owned and maintained by National Data Buoy Center
C-MAN Station
Sutron XPERT payload
61.082 N 146.662 W (61°4'54" N 146°39'42" W)

Site elevation: 0 m above mean sea level
Air temp height: 15.4 m above site elevation
Anemometer height: 15.9 m above site elevation
Barometer elevation: 10.9 m above mean sea level

Latest NWS Marine Forecast

Important Notice to Mariners

Search And Rescue (SAR) Data

Meteorological Observations from Nearby Stations and Ships Image indicating link to RSS feed of recent meteorological observations near station MRKA2

Sector pictures are available for this station at 0, 45, 90, 135, 180, 225, 270, 315 degrees.

(SECTOR PHOTOS ARE NOT IN REAL-TIME AND ARE NOT UPDATED!)

Station MRKA2
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 MRKA2 as of
(4:00 am AKDT)
1200 GMT on 10/20/2020:
     

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): N ( 350 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 7 kts
5-day plot - Wind Gust Wind Gust (GST): 11 kts
5-day plot - Atmospheric Pressure Atmospheric Pressure (PRES): 30.12 in
5-day plot - Pressure Tendency Pressure Tendency (PTDY): +0.03 in ( Rising )
5-day plot - Air Temperature Air Temperature (ATMP): 42.4 °F
5-day plot - Wind Chill Wind Chill (CHILL): 37.6 °F
5-day plot - Wind Speed at 10 Meters Wind Speed at 10 meters (WSPD10M): 8 kts
5-day plot - Wind Speed at 10 Meters Wind Speed at 20 meters (WSPD20M): 8 kts
5-day plot - Wind Speed, Wind Gust and Atmospheric Pressure Combined plot of Wind Speed, Gust, and Air Pressure
Continuous Winds
TIME
(AKDT)		 5-day plot - Wind Direction WDIR 5-day plot - Wind Speed WSPD
4:00 amN ( 356 deg ) 7 kts
3:50 amNNW ( 344 deg ) 9 kts
3:40 amN ( 352 deg ) 8 kts
3:30 amENE ( 74 deg ) 4 kts
3:20 amNE ( 37 deg ) 4 kts
3:10 amNE ( 37 deg ) 5 kts
  
Peak gust during the measurement hour
TIME
(AKDT)		 5-day plot - Gust Direction GDR 5-day plot - Gust Speed GST
3:44 amNNW ( 340 deg ) 12 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
(AKDT)		 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
1020 3:30 amNNE 3 7----30.12- 40.1-----
1020 3:00 amENE 3 5----30.11+0.03 39.7-----
1020 2:30 am E 6 7----30.11- 40.1-----
1020 2:00 am NE 7 8----30.10+0.02 40.8-----
1020 1:30 am NE 8 9----30.10- 41.4-----
1020 1:00 am NE 8 11----30.09+0.03 41.0-----
102012:30 am NE 8 8----30.09- 41.0-----
102012:00 amENE 8 8----30.09+0.03 41.0-----
101911:30 pmENE 9 10----30.08- 41.0-----
101911:00 pm NE 8 9----30.08+0.04 41.2-----
101910:30 pmENE 9 10----30.07- 40.6-----
101910:00 pm E 8 9----30.06+0.03 40.3-----
1019 9:30 pm E 7 8----30.06- 40.3-----
1019 9:00 pm E 5 6----30.06+0.02 39.9-----
1019 8:30 pm E 5 5----30.05- 40.3-----
1019 8:00 pmNNE 6 7----30.04+0.01 41.2-----
1019 7:30 pm E 5 5----30.04- 40.3-----
1019 7:00 pmENE 4 5----30.04+0.00 41.0-----
1019 6:30 pm E 5 5----30.03- 40.5-----
1019 6:00 pm NE 4 6----30.03+0.00 41.2-----
1019 5:30 pm N 5 6----30.03- 40.6-----
1019 5:00 pm N 5 6----30.03-0.01 40.5-----
1019 4:30 pmNNE 5 5----30.03- 40.1-----
1019 4:00 pmNNE 4 5----30.03+0.00 39.9-----
1019 3:30 pm N 6 8----30.03- 39.4-----
1019 3:00 pmNNE 7 9----30.03- 39.2-----
1019 2:30 pm NE 6 8----30.03- 38.8-----
1019 2:00 pm NE 8 9----30.04+0.01 38.3-----
1019 1:30 pm NE 8 9----30.04- 38.1-----
1019 1:00 pmENE 6 7----30.04+0.02 37.9-----
101912:30 pm NE 8 9----30.03- 37.4-----
101912:00 pmENE 8 9----30.03+0.02 37.2-----
101911:30 am NE 8 10----30.03- 36.9-----
101911:00 am NE 8 9----30.03- 36.9-----
101910:30 am E 9 10----30.02- 35.2-----
101910:00 am NE 10 11----30.01+0.01 36.1-----
1019 9:30 amNNE 11 12----30.01- 35.8-----
1019 9:00 amNNE 9 11----30.01+0.02 36.1-----
1019 8:30 amNNE 9 10----30.01- 36.3-----
1019 8:00 amNNE 9 10----30.00+0.02 36.5-----
1019 7:30 am NE 9 11----30.00- 37.2-----
1019 7:00 am E 7 7----30.00+0.02 36.3-----
1019 6:30 amNNE 9 10----29.99- 37.0-----
1019 6:00 am NE 9 10----29.99+0.01 37.2-----
1019 5:30 am E 8 9----29.98- 36.9-----
1019 5:00 amNNE 7 8----29.98+0.00 37.6-----
1019 4:30 amENE 6 7----29.98- 37.0-----
1019 4:00 amNNE 7 8----29.98+0.00 37.6-----

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.

The weekly status report and the weekly maintenance report also provide valuable station information.

Note that the payload types and the station locations occasionally change.
Please refer to the NDBC data inventory for the data history of each station.