I know there are a few methods for sending Tempest data to PWSweather by using various hardware and software solutions. I had another idea that utilizes the WeatherFlow API. You can obtain an API access token to access your station data through your weatherflow account and in conjunction with a station setup on PWSweather you can put your Tempest station data on PWS. This does require that a cron job be executed every 10 minutes or so.
Here is how it works: It reads your station observation data from the WeatherFlow API. It translates it into a url suitable for submission to the PWSweather API as a weather station. Finally, it submits the data to PWSweather. It does this as a cron job with a recommended interval of every 10 minutes.
Like many on this forum I have a web hosting account that displays my personal weather station website. It is capable of running PHP scripts as cron jobs. I crafted a script and set it up to test this method. So far the results are excellent. My Tempest station is now on PWSweather.com.
I have published this script on my MRE Software website at:
https://www.mresoftware.com/weatherflow.htm It is the second script on the page and is free to copy and use. In any event, I thought I would offer up the idea on the forums. Perhaps someone wants to craft it in another language or run it on a local computer. Enjoy!