Wind Data¶
This page describes the data sources behind the wind markers drawn on the map, and how a marker's appearance shows the reliability and freshness of its reading. Wind markers are toggled on/off with the Wind Vanes switch in Settings, see Settings.
Wind data source¶
The wind data source depends on the current map location:
- Finland – Finnish Meteorological Institute (FMI) observation stations
- Sweden – Sveriges meteorologiska och hydrologiska institut (SMHI) observation station service, supplemented with airport weather station (METAR) observations
- Norway and Denmark – the Norwegian Meteorological Institute's Nowcast model, supplemented with airport weather station (METAR) observations
- Elsewhere – airport weather station (METAR) observations
The two nearest wind stations are displayed on the map: the closer station slightly darker and the more distant one lighter.
The wind data from the two nearest stations is also shown as a separate panel on the map view.
Observed vs. modelled data¶
The ring around a wind marker shows whether the reading comes from a real weather station or is modelled:
- Solid ring – a real observation from a weather station (e.g. Finnish, Swedish, or airport stations)
- Dashed ring – modelled data (e.g. the Norwegian Nowcast service)
Data freshness¶
The colour of a wind marker shows how fresh the reading is:
- Blue – the reading is less than 30 minutes old
- Yellow – the reading is more than 30 minutes old
Ten-minute average¶
Wind speed and direction show the ten-minute average from the observation station in metres per second — not an instantaneous reading.
Wind Data in Observation Entries¶
When an observation entry is made, the current data from the two nearest wind stations to the observation location is automatically saved as part of the observation.
