Originally posted by spindoctor02
lol @ east coast people thinking a 5.9 is a big earthquake.LOL @ West Coast people assuming that a 5.9 on the West Coast is exactly the same as a 5.9 on the East Coast.
Earthquake waves travel much further in the eastern part of the USA than they do in the western part of the USA. The soil and rock types are different, plus the west is more mountainous, with the numerous mountain ranges out there limiting the reach of earthquakes.
Check out this map, which compares one of the New Madrid, Missouri earthquakes from 1895 with the Northridge, California quake from 1994. Both very similar in strength, but the New Madrid quake was felt over a MUCH wider area.
http://upload.wikimedia.org/wikipedia/commons/2/2c/NMSZ_Vergleich.jpgAnother even stronger quake from New Madrid later that year cracked sidewalks in Washington DC and damaged chimneys in Maine.
And as yet another example, a 7.3 in Charleston, South Carolina in 1886 damaged buildings as far away as Ohio and Kentucky.
So, sorry, but a 5.9 in the east is a big earthquake. And if it had been centered more directly underneath Washington, DC, they would've seen far more damage... like what Christchurch, New Zealand just went through a few weeks ago when they had a 6.0 centered basically right underneath their city. Go ahead, tell Christchurch they didn't have a big earthquake either.