Turrialba Volcano erupted Monday, May 4, 2015at 3:25 p.m. sending ash almost 3 km into the sky over San Jose, prompting the National Emergency Commission (CNE), to issue a national alert as well as causing the Juan Santamaría International Airport to close. The airport reopened at 6 am Tuesday May 5th, 2015.

Costa Rica’s international airport reopened Tuesday morning after the eruption of a nearby Turrialba volcano blanketed runways with ash, forcing its closure overnight.

The airport resumed operations at 6:00 a.m. local time, said an airport official. There were 13 flights had been delayed, canceled or rerouted because of safety concerns.

Turrialba volcano began erupting thick black ash Monday afternoon and winds carried the ash towards the capital San Jose, about 30 miles (50 km) away. Many areas of San Jose was blanketed with a layer of ash.