Did anyone feel the Pa. tremor?
There was a small earth tremor just after midnight this morning, centered only about 57 miles north of Baltimore, and I'm wondering if anyone in the area felt it.
The US Geological Survey pinpointed the center of the shake two miles north northeast of a place called Salunga-Landisville, Pa. I've never heard of the place, but it's a bit north and west of Lancaster. It struck at 12:04 a.m. EST and was rated at a mere 3.4 on the Richter scale. Not much, to be sure, but big enough to be felt. I' ve had one email from Bryan in Timonium telling me he felt it there.
Here is a map of the area. The orange box shows the location of the tremor. And here's a link to more maps.
Small earthquakes in this part of the country are not common, but they are not unheard-of either. Here is a map showing where similar small quakes have been located in recent years. Today's shake was the biggest in a series this fall in the same general area. Here's a link to a list.
The seismic hazard is pretty low around Baltimore, although we have had several in recent years - including one in the Dundalk area, and another in Lochearn. I don't have those stories at my fingertips. But here's a link to the Maryland Geological Survey, which has more details.
The risk of seismic activity increases as you go up the East Coast to the New York City area. Here's a hazard map.
If you felt this morning's tremor, leave us a comment and describe what you felt.