I woke up on October 6th (Lisbon, Portugal) to find my balcony totally wet from the rain. The top of my Tempest was covered in big raindrops… BUT…
i) I received no rain alerts
ii) In the app history, no rain accumulation was shown.
iii) I’ve done a check of the data using the REST API. The observations do not show any accumulation or precipitation events (items 12 and 13 in the list below).
0 - Epoch (Seconds UTC)
1 - Wind Lull (m/s)
2 - Wind Avg (m/s)
3 - Wind Gust (m/s)
4 - Wind Direction (degrees)
5 - Wind Sample Interval (seconds)
6 - Pressure (MB)
7 - Air Temperature ©
8 - Relative Humidity (%)
9 - Illuminance (lux)
10 - UV (index)
11 - Solar Radiation (W/m^2)
12 - Rain Accumulation (mm)
13 - Precipitation Type (0 = none, 1 = rain, 2 = hail)
14 - Average Strike Distance (km)
15 - Strike Count
16 - Battery (volts)
17 - Report Interval (minutes)
18 - Local Day Rain Accumulation (mm)
19 - Rain Accumulation Final (Rain Check) (mm)
20 - Local Day Rain Accumulation Final (Rain Check) (mm)
21 - Precipitation Aanalysis Type (0 = none, 1 = Rain Check with user display on, 2 = Rain Check with user display off)
Today, October 7th, I tested the sensor by (i) pouring water on the Tempest using a cup and (ii) tapping my fingers on the top of the Tempest.
As I did these, I was running a program that captured the UDP messages from the HUB.
I’m happy to report that both the pouring of water and tapping of fingers were detected - I checked UDP messages from the hub and also did some calls via the REST API.
By the way, the tapping of fingers was detected as hail…
Ok, so far so good…
The part that is sucky…
i) only some rain events are reported via alerts in the app… or maybe not all alerts/notifications are sent or received.
ii) Watching the UDP data from the hub, if I start pouring water or tapping my fingers, a message is not sent out immediately… The “rain” event is only sent out with the rest of the observation data - sent once a minute… By the time the message reaches the app, 2 minutes or more may have gone by… not really useful for any home automation or real-time action… Will do more investigation to make sure I’m not missing something…