Burst on
Definition 1 of 2
Pro Tip 1/3Sudden Realization
Used when a realization occurs quickly and unexpectedly. 
The implications of his mistake burst on him, and he gasped.
Pro Tip 2/3Emotional Impact
Often accompanies a moment of shock or intense emotion. 
She could feel happiness burst on her as she saw her dog again.
Pro Tip 3/3Not Literal
Doesn't usually mean a physical bursting; it's metaphorical. 
News of the scandal burst on the community, causing uproar.