surge

• large wave, billow; eruption, spurt; strong forward movement like that of a wave; short sudden jump in electrical voltage which is likely to damage electronic components (electricity)
rise and fall in or like waves; swell, heave, rise; increase suddenly (electricity)
a surge in something is a sudden great increase in it.
if people or vehicles surge somewhere, they move forward suddenly in a mass.
if water surges, it moves forward suddenly and powerfully. verb here but can also be used as a count noun with a supporting word or phrase. e.g. a second surge of floodwater is expected later this week.
if prices, votes, or sales surge, they suddenly increase by a very large amount.
if a participant in a contest surges ahead, they quickly move into a leading position.
if an emotion or sensation surges in you, you feel it suddenly and powerfully; a literary use. verb here but can also be used as a singular noun with the preposition 'of'. e.g. she felt a surge of affection for him. ...a surge of jealousy.