Data



Data Notes



Extracted from Database

14 Oct 2019

SITKA

Station Information

Station ID: 426
Latitude: 57.051667
Longitude: -135.341667
GLOSS ID: 154
Coastline code: 821
Station code: 31
Country: UNITED STATES
Time span of data: 1938 – 2018
Completeness (%): 99
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 SITKA.

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

Plot of annual mean sea level data at SITKA.

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 GNSS Stations from SONEL: AKSI
Nearby Real Time Stations from VLIZ: sitk2
Fast Delivery Data from UHSLC station 559: hourly and daily
Research Quality Data from UHSLC station 559: hourly and daily

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Sitka 821/031 RLR(1964) is 9.5m below BM8

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

Documentation added 1994-07-15

Pugh, 1987 (Tides, surges and mean sea-level. Wiley) refers to a magnitude 7.1 earthquake in July 1972, centred 40km off-shore of Sitka, which apparently had no effect on the tide gauge record.

Documentation added 2011-11-23

Using information from the NOAA website the RLR diagram has been revised. Previous Primary benchmark BM 8 - named 8 1924 on the NOAA site appears in the 1984 report with a value of 5.518m relative to gauge datum but does not appear in the 2003 report. Current Primary benchmark is 1600 L 1982 with a value of 13.669m 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