That means surge. An example would be “As remarkable as Spain’s rise in irregular migration activity has been through 2018, even more important is its recent surge.”
Germany considers tough response to Spain migration ‘surge’ – A German official has warned that Berlin may impose fresh controls on the borders with France and Switzerland. With a surge in migrant arrivals to Spain, Germany is hoping to avoid a repeat of the 2015 migration crisis.
“Over the year’s first five months, a total of 8,150 men, women and children were rescued in Spanish waters after leaving Africa — an average of 54 per day,” the IOM reported. “In the 55 days since May 31, a total of 12,842 have arrived — or just over 230 migrants per day.”