Any Ideas?

I warmed up my cbr600rr this morning and it started just fine.After a few minutes I turn it off. 10 minutes later, it tried to start it but the low oil pressure light was on and wont start. I hear the fuel pump start and the battery is fine. A few days ago it got rained on but does it matter much? I've also checked the oil level and it's fine.

I appreciate any help on this.

Thanks,
Ace

 

Out of gas?!?