Strong southerly winds picked up loose ash from a 1912 volcanic eruption, sending an ash cloud about 4,000 feet into the sky.

Volcano scientists issued an alert Wednesday, warning that a cloud of ash — from an eruption more than century ago — was headed toward Alaska's Kodiak Island. The ash is from the powerful 1912 eruption of Novarupta.

Strong northwesterly winds in the vicinity of Katmai and the Valley of Ten Thousand Smokes have picked up loose volcanic ash eruption and carried it to the southeast toward Kodiak Island today. The maximum cloud height is 5,000 ft above sea level. This is not the result of recent volcanic activity and occurs during times of high winds and dry snow-free conditions in the Katmai area.