GLOSS Station Handbook

GLOSS Station Handbook – Johnston Is., Hawaiian Is.

The GLOSS Station Handbook is currently being re-designed and upgraded.

Until a new version is available, the tide gauge station list below from the last version of the Handbook provides links to further details about each tide gauge in the GLOSS Core Network. Click the GLOSS number buttons to view the information. Click column headings to sort the table.


Station information

Gloss number109
Station nameJohnston Is., Hawaiian Is.
Time zone165W, GMT - 11hrs
Latitude (+ve N)16.73333
Longitude (+ve E)-169.53333
Observation periods1950-
Responsible countryU.S.A.
Authority responsible for tide gaugeNOAA, National Ocean Service, 1305 East-West Highway, Silver Spring, MD 20910-3281, USA
GLOSS contactUSA
Committed to GLOSSYes
Location map
Digital dataYes
Aditional parametersSurface temperature, density
Data acquisition rateDigital gauge: 6 minute interval (after 1975)
Analog gauge: hourly heights (before 1975)
Fast delivery data at UHSLCData 052 File format
High frequency data at BODCData 109 Document 57423 Document 83902
High frequency data at UHSLCData 052a Document 052a File format
Real-time data availableYes
Real-time data transmitted to GLOSS Fast Centre
Additional parameters (real-time)None
Tide gauge benchmarkBenchmark 13(1955) is the primary benchmark (PBM) stamped 'NO 13 1955' set in a concrete bulkhead cap at the inshore end of the small boat pier
Benchmark relationshipsTGBM is 9.35ft above Tide Gauge Zero (Station Datum)
NOAA Chart Datum (MLLW) is 1.74ft above Station Datum
Mean Sea Level (1960-1978) is 2.81ft above Station Datum
Auxiliary benchmarks10 additional benchmarks are levelled to the TGBM and the Tide Station on a yearly basis (BM 21, BM 28, BM 22, BM 19, BM L, BM 6, BM 12, BM 14, BM MON JOHN, BM NO 1 JOE)
Data at PSMSL
Annual MSL (RLR) dataRLR 598
Annual MSL (RLR) plot
PSMSL code598
Other relevant codesUHSLC 052
Additional information
Other relevant informationNOAA can no longer travel to the gauge
Last updated5 December 1993