Data



Data Notes



Extracted from Database

20 May 2019

SEWARD

Station Information

Station ID: 266
Latitude: 60.12
Longitude: -149.426667
GLOSS ID: 150
Coastline code: 821
Station code: 17
Country: UNITED STATES
Time span of RLR data: 1964 – 2018
RLR completeness (%): 94
Time span of metric data: 1925 – 2018
Metric completeness (%): 87
Date of last update: 31 Jan 2019

Green Arrow: Current Station
Yellow Marker: Neighbouring RLR Station
Red Marker: Neighbouring Metric Station

Please note: In many cases, the station position in our database is accurate to only one minute. Thus, the tide gauge may not appear to be on the coast.

Tide Gauge Data

Plot of monthly mean sea level data at SEWARD.

Link to larger image of monthly data plot.
Download monthly mean sea level data.

Plot of annual mean sea level data at SEWARD.

Link to larger image of annual data plot.
Download annual mean sea level data.

Download metric sea level data. Use only with extreme caution.
NOTE: If some of the data are red in the plots above, the 'flag for attention' is set. Please see the documentation below.

Additional Data Sources (guide to additional data sources)

Nearby Real Time Stations from VLIZ: sewa, sewa2
Fast Delivery Data from UHSLC station 560: hourly and daily
Research Quality Data from UHSLC station 560: hourly and daily

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Seward 821/017 RLR(1972) is 13.0m below BM22

Documentation added 1992-04-02

SOUTH ALASKAN COASTLINE EARTHQUAKE PRONE - E.G. MAGNITUDE 9.2 EARTHQUAKE OF 28 MARCH 1964 - SEE SAVAGE AND PLAFKER, JGR, 96(B3), 4325-4335, 1991 1964 - 1966 GAUGE SITED ON RAILWAY WHARF
1966 TO DATE , GAUGE SITED ON ALASKA RAILROAD PIER

Documentation added 2011-08-25

Using NOAA data the RLR diagram has been re-drawn. Data for the period 1925-1963 referred to benchmark BM K-11 which now no longer appears in the NOAA reports. Primary benchmark is now 5090 B 1978 8.314m above gauge datum. The previously used benchmark NO 22 1966 still exists at 9.458m above gauge datum.

Data Authority

N.O.A.A. / N.O.S.
N/oes33, Ssmc4, Room 6531
1305 East-West Highway
Silver Spring,
MD 20910