Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
Register
  • The final cut of the 8th episode of the Tesla Motors Club Podcast, featuring Balazs Biro, of the prominent Hungarian EV channel Villanyautósok, is now available. You can watch it now on YouTube or listen to it on all major podcast networks.

Storm Watch - what triggers it?

North Texas is currently under a winter storm warning lasting through Monday. I have storm watch enabled but it is not “active”.

I’m a bit worried because it has been so cloudy all week, I’ve just remained at my reserve of 40%. I switched to backup only to charge as much as I can, but getting very little with the cloud cover.

who or what determines an active storm watch mode? I thought it was based on NWS?
 

jjrandorin

Moderator, Model 3, Tesla Energy Forums
Moderator
Nov 28, 2018
14,202
17,928
Riverside Co. CA
Tesla triggers it, based on NWS warnings.

EDIT: I should say that, in my experience, stormwatch are triggered when your area is in the highest form of whatever NWS information is showing.

For example, if your specific area is under a winter storm advisory, or winter storm watch, it is unlikely stormwatch would be triggered. If your are is under a winter storm warning then stormwatch likely would be triggered, if the warning was for your specific zip code.

Its only on the highest (warning) that it seems to trigger, and not always then, if your specific area is not predicted to be impacted. At least that has been my experience (and more around high winds, not winter storms, but should be the same)
 
Well reading the warning it would seem this is about as high as it gets...

“..HISTORIC WINTER STORM POISED TO IMPACT THE REGION SUNDAY...”

Is storm watch supposed to be automated? Or am I depending on someone at Tesla to keep up with the weather conditions across the country and “allow” me to grid charge on a case by case basis? seems a little vague.

maybe it will kick on sometime Saturday or Sunday... grid in my area is pretty stable, but still would like to know the feature works when it should...
 

jjrandorin

Moderator, Model 3, Tesla Energy Forums
Moderator
Nov 28, 2018
14,202
17,928
Riverside Co. CA
Well reading the warning it would seem this is about as high as it gets...

“..HISTORIC WINTER STORM POISED TO IMPACT THE REGION SUNDAY...”

Is storm watch supposed to be automated? Or am I depending on someone at Tesla to keep up with the weather conditions across the country and “allow” me to grid charge on a case by case basis? seems a little vague.

maybe it will kick on sometime Saturday or Sunday... grid in my area is pretty stable, but still would like to know the feature works when it should...

I would imagine "north texas" is a fairly large area? It appears to me that they (tesla) narrow it down to zip codes, not large geographic areas. There isnt anything you need to (or can) do to "make it work" other than turn it on so that if they trigger it in the app, it will charge.

As for the actual triggering mechanism, I only know that tesla is responsible for it, and they use NWS data for it. As to whether someone has to approve it for an area or not, or its automated by zip code or something, I dont know.

If the storm is in "your area" but isnt projected to hit your zip code directly (for example) they likely wont turn it on. My city is about 26 square miles, and there are 3 zip codes here. I think stormwatch has been on for people in one of the zip codes in my city and not the other 2, for example.

They try to narrow the range, not widen it, at least thats what it seems like to me.
 

bob_p

Active Member
Apr 5, 2012
3,738
2,947
Storm Watch was triggered in the Houston area in advance of the cold weather and in time for the PowerWalls to get to 100% charge before the cold weather hit.

So that worked as it should.

But... Overnight when the grid appears to have gotten back to normal, Storm Watch was deactivated, so our PowerWalls started discharging.

Since I don't trust that the grid is really fixed after only a few hours of "normal" operation, I manually set our system to Self-Powered with a 95% reserve - and will keep it that way until we've gone at least 24 hours without any grid issues.

It would be very useful if Tesla would add notifications about "Storm Watch activated" and "Storm Watch deactivate".

We also never got app notifications on the grid going offline.

The only notification I received was an e-mail after the grid went offline, with suggestions of how to manage the PowerWalls during grid outages.
 

jboy210

Well-Known Member
Supporting Member
Dec 2, 2016
6,515
4,454
Northern California
I thankfully never lost power, and storm watch mode is still active for me.

I had the same thought that we need notifications for both activation and deactivation of storm watch.
If you have a couple of charged PWs you could be sitting on a gold mine. I read power in texas when from $5 to $500 on Monday and Tuesday.
 

Products we're discussing on TMC...

About Us

Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.

Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


SUPPORT TMC
Top