Most persons, unless they are pilots, balloonists or extreme kite flyers, do not know that the wind may have a different direction at various altitudes.
When Volcán Turrialba erupted again Tuesday at 2:10 a.m., the winds at the crater level were weak to moderate and coming from the east, said the Instituto Meteorological Nacional. At 8,000 meters the wind was stronger and from the southwest.
The eruption was reported to have gone two kilometers into the sky.
That means that some of the ash was blown out to the Caribbean, while winds at lower levels spread ash and smelly sulfur into the Central Valley, the north Pacific and the Nicoya Peninsula, said the weather institute.
The Red Sismológica Nacional said that ash was detected at least 40 kilometers from the volcano in Parque Nacional Volcán Poás, Cinchona, Grecia, Ciudad Quesada and locations in that direction.
Experts are paying close attention to the volcano because it seems to be more active each day. The eruption Tuesday emitted glowing cinders.
The national emergency commission said Tuesday that flight over the crater is planned for today so that experts can inspect what is taking place there. There have been plenty of inspections from the summit of the volcano, but the emergency commission is seeking access to the big picture.