Sigcharts - Significant Weather Charts for aviation
This service delivers Significant Weather Charts in PNG format, covering the Nordic area, Svalbard and the Norwegian Sea.
Charts are issued every six hours, valid for the hours 00, 06, 12 and 18 UTC. Charts for Norway are not produced during the weekend. At least 4 charts are available for each area.
For more information, see https://en.wikipedia.org/wiki/SIGWX.
Area can be specified as a method, e.g.
Area covered in forecast, defaults to "norway". Valid options are:
Time in ISO format, e.g. "2020-12-24T12:00:00Z". If omitted, the newest available image will be served (unless the
offsetparameter is used).
Count back n images from newest. Valid options are from 1 to 3 (optional).
Other parameters may be added later. Stay tuned.
A list of all images can be fetched at:
All changes are available as an RSS feed at the following URL:
The old version 1.0 has been extended to Sep 1st, 2022
The old version 1.0 is now deprecated, and will be terminated on June 1st, 2022
Added Nordic area, params made consistent with rest of API
Optional parameter validdate added