# Delete "Rain" during SKY setup

**URL:** <https://community.tempest.earth/t/delete-rain-during-sky-setup/1001>\
**Category:** Tempest Owners\
**Created:** [May 14, 2018, 4:03am UTC](https://community.tempest.earth/t/delete-rain-during-sky-setup/1001 "2018-05-14T04:03:24Z")\
**Posts on this page:** 5\
**Page:** 2

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**Author:** ![stevencmorse](https://avatars.discourse-cdn.com/v4/letter/s/9dc877/32.png) [@stevencmorse](https://community.tempest.earth/u/stevencmorse)\
**Post date:** [August 22, 2018, 3:35pm UTC](https://community.tempest.earth/t/delete-rain-during-sky-setup/1001/21 "2018-08-22T15:35:20Z")

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Oh, I didn’t know the Sky (and presumably the Air) would log data while the power is out. Nice feature! How long of an outage will they log data for?

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**Author:** ![WFmarketing](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/wfmarketing/32/62_2.png) [@WFmarketing](https://community.tempest.earth/u/WFmarketing)\
**Post date:** [August 22, 2018, 6:31pm UTC](https://community.tempest.earth/t/delete-rain-during-sky-setup/1001/22 "2018-08-22T18:31:07Z")

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Here is how the system is designed to work:

WHEN INTERNET CONNECTION IS DOWN  
The sensor devices, AIR & SKY, will continue to collect data and report to HUB. HUB will store about a week’s worth of data. Once internet is re-established, HUB will backfill the data gap.

DURING POWER OUTAGE  
If HUB loses power, the sensor devices AIR & SKY will continue to collect and store data for about 4 hours (limited by onboard memory capacity). Once HUB regains power, the sensor devices will offload all stored data for the HUB to upload to the cloud.

_Tip_ – during lengthy power outage, simply plug HUB into a common USB power brick/battery for continued operation.

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**Author:** ![vinceskahan](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/vinceskahan/32/2785_2.png) [@vinceskahan](https://community.tempest.earth/u/vinceskahan)\
**Post date:** [August 22, 2018, 8:20pm UTC](https://community.tempest.earth/t/delete-rain-during-sky-setup/1001/23 "2018-08-22T20:20:57Z")

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> [@WFmarketing](#):
>
> uring lengthy power outage, simply plug HUB into a common USB power brick/battery for continued operation.

I think the battery will work better when the power is out 🙂

Any data on how much power the hub uses so we can think about sizing a battery backup ?

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**Author:** ![vreihen](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/vreihen/32/13217_2.png) [@vreihen](https://community.tempest.earth/u/vreihen)\
**Post date:** [August 22, 2018, 9:29pm UTC](https://community.tempest.earth/t/delete-rain-during-sky-setup/1001/24 "2018-08-22T21:29:43Z")

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0.07 amps on my meter…

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**Author:** ![moeythomas](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/moeythomas/32/2330_2.png) [@moeythomas](https://community.tempest.earth/u/moeythomas)\
**Post date:** [September 5, 2018, 3:11pm UTC](https://community.tempest.earth/t/delete-rain-during-sky-setup/1001/25 "2018-09-05T15:11:17Z")

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I’ve just installed Sky. However, I had some bogus rainfall readings, so I followed the procedure to delete the data once it was installed. Since then, the Sky unit hasn’t come back online.

Restarted the hub, thankfully it’s back online. Panic over! 🤭

[Previous page](https://community.tempest.earth/t/delete-rain-during-sky-setup/1001.md?page=1)