[Extremely Extreme Extremist]

I always thought that Krakatoa was the biggest one.

[RayChuang88]

The eruption of Krakatau produced less volcanic ash than the 1815 Tambora eruption, which spewed something like 15 cubic miles of volcanic ash into the atmosphere. That was enough to cause pretty severe climatic changes, including essentially eliminating summer at the higher latitudes in 1816.

Today, the Indonesian volcanoes are VERY closely monitored because almost every volcano in the Indonesian Archipelago is capable of spewing out gigantic amounts of volcanic ash into the atmosphere. One volcano on Sumatra island--Toba--is a true supervolcano that could spew well over 140 cubic miles of ash in a single eruption event, which would have devastating worldwide effects on agricultural production.

[Calvin Locke]

Re: Tambora

Even Thomas Jefferson noted the change in the weather. Then there are the news stories about the year (1816) without a Summer.

[Mr. K]

Krakatoa must have been something...

people 20 miles away from the island were knocked over and went deaf from the blast