Station MRKA2 - Middle Rock Light, AK

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

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Disclaimer

Conditions at MRKA2 as of
(3:00 am AKDT)
1100 GMT on 07/17/2019:
Unit of Measure: Time Zone: Click on the graph icon in the table below to see a time series plot of the last five days of that observation.
	Wind Direction (WDIR):	N ( 10 deg true )
	Wind Speed (WSPD):	3 kts
	Wind Gust (GST):	3 kts
	Atmospheric Pressure (PRES):	29.60 in
	Pressure Tendency (PTDY):	-0.04 in ( Falling )
	Air Temperature (ATMP):	52.2 °F
	Wind Chill (CHILL):	51.8 °F
	Wind Speed at 10 meters (WSPD10M):	4 kts
	Wind Speed at 20 meters (WSPD20M):	4 kts
	Combined plot of Wind Speed, Gust, and Air Pressure

Continuous Winds
TIME (AKDT)	WDIR	WSPD
3:00 am	N ( 4 deg )	3 kts
2:50 am	N ( 10 deg )	3 kts
2:40 am	NNE ( 16 deg )	4 kts
2:30 am	WNW ( 297 deg )	2 kts
2:20 am	E ( 86 deg )	3 kts
2:10 am	NE ( 52 deg )	1 kts

Peak gust during the measurement hour
TIME (AKDT)	GDR	GST
2:28 am	ENE ( 70 deg )	6 kts

Previous observations

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
07	17	2:30 am	ENE	6	6	-	-	-	-	29.61	-	52.5	-	-	-	-	-
07	17	2:00 am	NW	2	2	-	-	-	-	29.61	-0.03	52.9	-	-	-	-	-
07	17	1:30 am	S	2	2	-	-	-	-	29.62	-	52.9	-	-	-	-	-
07	17	1:00 am	NNE	6	7	-	-	-	-	29.63	-0.02	52.3	-	-	-	-	-
07	17	12:30 am	-	0	1	-	-	-	-	29.65	-	54.1	-	-	-	-	-
07	17	12:00 am	SW	5	5	-	-	-	-	29.64	+0.00	54.9	-	-	-	-	-
07	16	11:30 pm	WSW	3	4	-	-	-	-	29.65	-	55.8	-	-	-	-	-
07	16	11:00 pm	SW	10	11	-	-	-	-	29.64	-0.01	55.4	-	-	-	-	-
07	16	10:30 pm	SW	7	8	-	-	-	-	29.65	-	56.7	-	-	-	-	-
07	16	10:00 pm	S	11	12	-	-	-	-	29.65	+0.00	57.4	-	-	-	-	-
07	16	9:30 pm	S	13	15	-	-	-	-	29.64	-	57.0	-	-	-	-	-
07	16	9:00 pm	S	11	15	-	-	-	-	29.65	+0.03	56.7	-	-	-	-	-
07	16	8:30 pm	S	13	14	-	-	-	-	29.65	-	56.5	-	-	-	-	-
07	16	8:00 pm	SSW	11	14	-	-	-	-	29.65	+0.03	56.3	-	-	-	-	-
07	16	7:30 pm	SW	13	14	-	-	-	-	29.65	-	56.7	-	-	-	-	-
07	16	7:00 pm	S	19	22	-	-	-	-	29.64	+0.03	57.7	-	-	-	-	-
07	16	6:30 pm	S	16	17	-	-	-	-	29.63	-	58.3	-	-	-	-	-
07	16	6:00 pm	S	19	22	-	-	-	-	29.62	+0.01	59.2	-	-	-	-	-
07	16	5:30 pm	S	16	18	-	-	-	-	29.62	-	58.8	-	-	-	-	-
07	16	5:00 pm	SSW	20	21	-	-	-	-	29.62	+0.00	58.1	-	-	-	-	-
07	16	4:30 pm	SW	21	23	-	-	-	-	29.62	-	60.4	-	-	-	-	-
07	16	4:00 pm	SSW	21	23	-	-	-	-	29.61	-0.03	58.8	-	-	-	-	-
07	16	3:30 pm	SSW	21	22	-	-	-	-	29.61	-	57.9	-	-	-	-	-
07	16	3:00 pm	SSW	18	20	-	-	-	-	29.61	-0.06	57.2	-	-	-	-	-
07	16	2:30 pm	SSW	20	21	-	-	-	-	29.61	-	57.6	-	-	-	-	-
07	16	2:00 pm	SSW	16	18	-	-	-	-	29.62	-0.07	57.6	-	-	-	-	-
07	16	1:30 pm	SSW	12	13	-	-	-	-	29.63	-	57.6	-	-	-	-	-
07	16	1:00 pm	SSW	10	11	-	-	-	-	29.64	-0.07	58.1	-	-	-	-	-
07	16	12:30 pm	SSW	4	5	-	-	-	-	29.66	-	58.5	-	-	-	-	-
07	16	12:00 pm	SE	3	3	-	-	-	-	29.67	-0.05	55.6	-	-	-	-	-
07	16	11:30 am	NNE	6	6	-	-	-	-	29.68	-	54.5	-	-	-	-	-
07	16	11:00 am	NE	6	7	-	-	-	-	29.69	-0.05	52.5	-	-	-	-	-
07	16	10:30 am	NNE	8	8	-	-	-	-	29.70	-	52.0	-	-	-	-	-
07	16	10:00 am	NNE	6	6	-	-	-	-	29.71	-0.05	51.4	-	-	-	-	-
07	16	9:30 am	NE	7	8	-	-	-	-	29.72	-	51.4	-	-	-	-	-
07	16	9:00 am	NNE	5	6	-	-	-	-	29.72	-0.04	51.4	-	-	-	-	-
07	16	8:30 am	NE	7	8	-	-	-	-	29.73	-	51.4	-	-	-	-	-
07	16	8:00 am	NNE	7	7	-	-	-	-	29.73	-0.05	52.2	-	-	-	-	-
07	16	7:30 am	NE	7	7	-	-	-	-	29.75	-	51.3	-	-	-	-	-
07	16	7:00 am	NE	7	8	-	-	-	-	29.76	-0.04	51.4	-	-	-	-	-
07	16	6:30 am	ENE	7	8	-	-	-	-	29.76	-	53.2	-	-	-	-	-
07	16	6:00 am	NNE	8	8	-	-	-	-	29.76	-0.05	51.4	-	-	-	-	-
07	16	5:30 am	NNE	8	8	-	-	-	-	29.77	-	52.0	-	-	-	-	-
07	16	5:00 am	NE	8	8	-	-	-	-	29.78	-0.05	50.4	-	-	-	-	-
07	16	4:30 am	NE	6	7	-	-	-	-	29.79	-	52.2	-	-	-	-	-
07	16	4:00 am	NNE	6	6	-	-	-	-	29.80	-0.04	50.4	-	-	-	-	-
07	16	3:30 am	NNE	8	9	-	-	-	-	29.81	-	49.1	-	-	-	-	-
07	16	3:00 am	ENE	7	8	-	-	-	-	29.81	-0.04	51.4	-	-	-	-	-

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.