Is 'precip accumulated' reset periodically?

[peter]

It is the total over the reporting period. You can see more info about the reporting periods here. It is for Air and Sky, but it is the same for Tempest.

Data archive buckets explained

So how does WeatherFlow store data? Explained: your AIR & SKY sensor devices are constantly collecting and sending observations to the HUB. The HUB then uses a set of sophisticated algorithms to inspect the data before publishing to the secure WeatherFlow servers. HUB also makes the data available locally via UDP and BLE broadcast for users who wish to collect and store the data at home. The secure WeatherFlow servers not only store all the 1min data, but the data is also processed and stored…