Data and Station Information for HIERRO

Station Information

Station ID:	2051
Latitude:	27.784108
Longitude:	-17.901611
Coastline code:	370
Station code:	9
Country:	SPAIN
Time span of data:	2004 – 2024
Completeness (%):	96
Date of last update:	03 Jul 2025

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 HIERRO.

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

Plot of annual mean sea level data at HIERRO.

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: FRON, EH01
Nearby Real Time Stations from VLIZ: hie2

Station Documentation

Link to RLR information.

Documentation added 2011-01-24

This is a new station first data 2009. Data has previously been supplied but latitude and
longitude only now confirmed. Benchmark HI1 4.342m relative to datum REDMAR
Station made RLR. RLR year 2006 factor 5.458m.

Documentation added 2013-03-18

The Aanderra pressure gauge at Hierro has been moved and replaced by a new MIROS
radar sensor. Both old and new gauges were operating for the period 14.11.2009-
15.06.2010 for inter-comparison purposes. During this period a bias (mean difference) between the two
gauges was calculated as -0.29cm. A malfunction in the old sensor was also detected.
There was also a datum change of -9cm from Nov. 2011.
See B. Perez et al paper 'Overlapping sea level time series
measured using different technologies: an example from the REDMAR Spanish
network'.

Documentation added 2014-01-13

Further investigation revealed that the bias was due to a fault in the old Pressure gauge. Data from this was revised. Complete dataset was re-entered into database.

Documentation added 2014-04-28

At the request of Puerto del Estado the latitude and longitude have been changed from 27.800000 -17.898333 derived from the previously supplied degrees and minutes value to 27.78408 -17.90163 which is the position of the new MIROS gauge in decimal degrees.

Data Authority

Puertos del Estado
Área de Conocimiento y Análisis del Medio Físico
Avda. Del Partenón, 10
28042, Madrid

Documentation added 2001-03-06

The Area de Conocimiento y Analisis del Medio Fisico was
formerly known as the Departamento de Clima Maritimo.

Data

Data Notes

Extracted from Database

HIERRO