mitchellcrazyeye WSV3 Tactical Mesoanalyst will feature a completely re-engineered surface observation ingest and display engine, some aspects of which I already did some predevelopment work on in early 2022. It will be designed to handle over 100,000 observations per hour and accommodate data flexibly from diverse networks.
I have to spend a lot of time first creating the rendering engine and data ingest aspects before actually connecting point observation data sources (such as METAR) into the engine. The latter becomes a mere administrative task once I have completed the former.
I will build an impressive repertoire from public domain data, though likely a data upcharge will be necessary for massive datasets (e.g. MADIS Mesonet obs), and with the possibility of partnering with entities who want to share/input/resell data.
I don't believe Wunderground publicly shares their PWS data in public domain raw data formats, but this becomes a business relationship opportunity once the actual work is done of creating the engine. The engine is the important part - we can figure out what data is available to tie into it later. That will probably only happen very soon before release.
This is the opposite of the older, horrible design where everything was client-side and adding new data sources required completely recreating new systems with custom and redundant code. For WSV3 Tactical Mesoanalyst I am creating very versatile high-level ingest engines with a server-side preprocessing component, so that the client PC can display/load data much more quickly, with far less client-side processing, and so I can add new datasets rapidly as an administrative vs coding task.
I expect this design will come very much in handy for the surface observations system, since one can imagine the likelihood of adding support for many specific networks, depending on what's available.
In the meantime, if you can let me know of any free, public domain, real-time observation data sources which are in excess of what's in MADIS, then that would be helpful to know about.