WMO Information System (WIS)
Weather knows no borders. Predicting tomorrow's weather requires observations collected from thousands of kilometres away — and it is through the coordinated exchange of data between Members in the WMO Information System (WIS) that accurate forecasting and early warning services become a reality.
To feed today's advanced weather models, observations from land-based weather stations, ships and buoys at sea, and satellites in space must be shared rapidly and reliably. Weather data exchange is a two-way street: the sharing of observations enables improved forecasts to flow back in return, providing meteorological services that can protect lives and livelihoods.
The next generation of the WMO Information System is WIS2, built on open standards and modern web technologies. WIS2 is designed to make data sharing simpler, more effective, and accessible to every WMO Member — ensuring no Member is left behind.
To lower barriers to the implementation of WIS2, “WIS2 in a box” (wis2box) was developed as an open-source, low-cost software solution that simplifies the deployment of a WIS2 Node. WIS2 officially became operational in January 2025 and is already seeing rapid adoption, with WMO Members around the world actively sharing data through WIS2.
