White smoke from under the hood

[SiennaLover69]

So I was driving the other day not far maybe just a few miles and while waiting in a drive thru I notice my car starting to overheat. Right when it starts getting into the red I hear a pop noise from under the hood and white smoke starts pouring out (coming out mostly at the passenger side of the hood). I turn the car off and pop the hood and mostly seeing smoke coming out from around the front and to the left of the engine. I wait a bit and decide to see what happens when I turn it on and it is running okay, just a little bit of a rough idle for a couple mins and the car still running a little hot but nothing else, it runs pretty fine and I take it home (I was like 2 mins from home).
So any ideas on what it could be?
Before this happened my car would fluctuate a bit at idle but that would usually stop when the car warmed up and I've been running mostly water in the radiator for the past 6 months or so. I haven't really driven it too much the past year save for the last couple months when I started taking full time classes again.
Any help would be great! I am a super noob and have been learning as I've had to fix things lol.

Edit: Also there is no smoke coming from the exhaust, just some from under the hood. I took it for a 15 min spin earlier and I noticed it overheating just a tiny bit and a little bit of white smoke coming from the under the hood and the radiator seemed pretty empty.

 

[prove_it]

Probably had a plugged radiator that finally cracked.

 

[SiennaLover69]

Cool, hoping it would be something fairly simple lol. So just replace the radiator and im good to go? Sorry for the crappy first post btw, I was already late for work so just tried posting something real quick lol.

 

[FlyingEagle]

Get pressure on the system and see where it blows out from.

I overheated my setup when running link for the first time and had a billowing smoke stack from my overflow container.

Not a pretty sound or sight. I was horrified, but the rest of the system held up, even the weeping at the hose clamp over my SSSS which is a bitch to keep tight/sealed.

Cracked rad top, split hose up top, or other.

Need to perform proper diagnosis.

 

[GSTwithPSI]

^What he said. Pressure test the system and see where it's leaking.