Uprush
/ˈʌprʌʃ/
Definition 1 of 2
Pro Tip 1/3Unexpected Events
The term often describes sudden natural phenomena or unexpected happenings. 
An uprush of wind disrupted the quiet afternoon.
Pro Tip 2/3Intensity
Use 'uprush' to emphasize the strong and intense nature of an action or event. 
The uprush of adrenaline made him spring into action.
Pro Tip 3/3Physical Sensation
'Uprush' can represent a physical experience, often related to water or air. 
She felt an uprush of the sea while snorkeling.