Turning off power during download of update

[Catfish]

New Windows 10 Laptop is downloading update for version 1511,10586, and it has taken hours to get to 49%.
Storm coming and I really need to turn off machine. Will the part of update that has downloaded be there when I turn laptop back on?
We have lots of lightning and I have been hit before, I do have protection, but don't like to rely on it in this case. At the download has been going, it could take another four hours to get the last half of download.
Thanks for your help.

 

[Trouble]

Hello and welcome to the forum.
Sorry, didn't see your post last night.
I hope the storm has passed by now.
As far as interrupting the download...
If it was only downloading then shutting down the computer shouldn't result in any problem. It should resume normally and the files that are present and whole (not partial) should not have to be re-downloaded.
BUT, even if it doesn't, I would think that protecting your electronics from potential damage from a lightning strike is more important than an upgrade download.