Hey this is great! Composition is dynamic due to the fun viewing angle and your use of sun light is very cool! Although I have never seen lightning on a sunny day before.
Thanks! 
Daytime lightning isn't very common, but it happens. This is the closest image I could find of a daytime storm in a similar scenario:
[link]
No lightning in it, but it at least shows that it's feasible for sure. The convenient thing about the weather in this game is that [spoiler alert!]
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it has a mind of its own and can pretty much do whatever it wants. There's a part in the game where it starts snowing, which wouldn't normally happen-- even Lara herself says it's strange weather before she finds out what's actually happening.
Daytime lightning isn't very common, but it happens. This is the closest image I could find of a daytime storm in a similar scenario:[link]
![[link]](https://www.deviantart.com/users/outgoing?http://2.bp.blogspot.com/-kIsHCPsLTUs/ToTj020cvVI/AAAAAAAAEPY/vYqBgDubZyY/s1600/photo-722050.PNG){kind=link}
No lightning in it, but it at least shows that it's feasible for sure. The convenient thing about the weather in this game is that [spoiler alert!]
.
.
.
.
.
.
.
.
it has a mind of its own and can pretty much do whatever it wants. There's a part in the game where it starts snowing, which wouldn't normally happen-- even Lara herself says it's strange weather before she finds out what's actually happening.