Cinders are about the size of a golf ball. . Bombs can be several meters large. However they can be about the size of a golf ball. Volcanic eruptions known as lateral blasts which are sideways blasts can shoot bombs at high speeds for several miles. These blasts have been known to knock down entire forests .
Volcanoes can also trigger tsunamis, floods, earthquakes, rockfalls, and mudflows.
Volcanic eruptions are most likely in the states of Hawaii, Alaska, Washington, Oregon, and California. The danger area around a volcano covers approximately a 20-mile radius. Some danger may exist 100 miles or more from a volcano, leaving Montana and Wyoming at risk.