Nearby residents reported that ash from the blast showered several communities.
The mountain’s volcano observatory said that a new fissure broke open on the southeastern flank of the crater during the eruption.
Turrialba last produced an eruption in 1866, which sent ash falling as far away as Nicaragua, according to historical records.
The mountain has become increasingly active since it began to rumble again in January 2001.
In January 2010, it spewed ash with such force that two nearby villages, La Central and El Retiro, were evacuated briefly.