Wednesday, October 17, 2012

New England Earthquakes

On Tuesday evening, a 4.6 magnitude earthquake shook New England.  The quake was centered in Maine and the ground shook all the way to Boston.
While major earthquakes are fairly rare in New Hampshire, it made me wonder if this was the case for a long time or just in the last hundred years?

In 1663 a major earthquake shook the St. Lawrence River, Canada and the northeaster United States.  Even though the population was low at this point in history, there are records of houses shaking, chimneys being broken and pewter falling off shelves in Massachusetts.

In 1727 there was a big earthquake in Newbury, Massachusetts.

In 1732 there was a big earthquake centered in Montreal that damaged several hundred houses.

In 1755 there was a quake centered in Cape Ann, Massachusetts that caused quite a bit of damage in Boston.

In 1810, Exeter, NH was hit by a high intensity earthquake that causes a ship in Portsmouth harbor to hit bottom.

Between 1872 and 1891 Concord got hit with a number of quakes.

In 1925 there was an earthquake that caused damaged chimneys, broken dishes and buildings rocked.

In 1928 a 7.2 earthquake was flet in Newfoundland.

In 1935 a 6.2 quake hit parts of Canada.

In 1940, 4 days apart, two earthquakes shook an area by Lake Ossipee.  Chimneys were broken, walls cracked, pipes were broken.  There were signs of cracks in the ground.  Shakes affected over 390,000 km of land in the Northeast, including Maine, Massachusetts, NH, Rhode Island,Vermont as well as NY, NJ and Pennsylvania.  Over 129 aftershocks were recorded.

In 1964 in Meriden, NH, Bradford, NH and Springfield, VT reported earthquakes.

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