Our Weather and Volcanoes

by Mike Sterling for the CCNews group

Feature/Weather

(continued)

Mt. Redoubt at 9,000 feet

In 1989 I was in Alaska staying on a mountain overlooking Anchorage above the clouds.  I was trying to get some mountain training in for  races that were coming up.  Mt. Redoubt is about 110 miles southwest of where I was.  It erupted.

The ash debris covered about 7,700 square miles.  The plume rose some 45,000 feet in the air.  The dust covered everything.  I had to run with a mask on for a while.  At the lower elevations, police warned people to stay inside.

The worst part of the ash was its effects on jet aircraft.  A KLM jet lost power for a period of time and as a result jets were grounded for quite a while.  Nobody left or entered with jets..

Mt. Redoubt

(next column)

24/03/2009 08:58 PM


Redoubt has erupted again and it shows no signs of being calm.

Volcano eruptions have a way of changing the weather.  Ash collecting on snow and ice makes it melt faster as it absorbs the sun.  The blockage of sunlight reduces the ability of the sun to heat the earth's crust.  Huge euptions can alter the weather for long periods of time.  Things get  unstable.

Mt. St. Helen had a weather component that reached across the continent.

HMS General Hunter

Mount Tambora (or Tomboro) is an active volcano  on Sumbawa island, Indonesia. The explosion in 1815 was heard 1200 miles away and it changed weather for years.  The next year, 1816, was the summer without sun and famine was at work in Maritimes and New England.  We had snow here and in Michigan in July.

In August of that year the Brig HMS General Hunter was wrecked on the Southampton shore.  Could the storm that lashed Lake Huron have been the result of Tambora?  Was the General Hunter sunk by a Volcano?


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