Earthquake: 3.4 M - SOUTH DAKOTA

USGS Email ^ | 8/9/11 | USGS

[Keith in Iowa]

3.4 M - SOUTH DAKOTA

Preliminary Earthquake Report

Magnitude	3.4 M
Date-Time	9 Aug 2011 19:45:18 UTC 9 Aug 2011 14:45:18 near epicenter 9 Aug 2011 13:45:18 standard time in your timezone
Location	44.365N 100.363W
Depth	15 km
Distances	1 km (1 miles) NE (56 degrees) of Fort Pierre, SD 2 km (1 miles) W (261 degrees) of Pierre, SD 34 km (21 miles) WSW (241 degrees) of Blunt, SD 305 km (190 miles) WNW (289 degrees) of Sioux Falls, SD 640 km (398 miles) NE (35 degrees) of Denver, CO
Location Uncertainty	Horizontal: 16.3 km; Vertical 10.9 km
Parameters	Nph = 61; Dmin = 112.4 km; Rmss = 1.09 seconds; Gp = 25° M-type = M; Version = 7
Event ID	US c0005b9i

For updates, maps, and technical information, see:
Event Page
or
USGS Earthquake Hazards Program

National Earthquake Information Center
U.S. Geological Survey
http://neic.usgs.gov/

Disclaimer

[Keith in Iowa]

South Dakota - not known for quakes...

[ruesrose]

We had a 3.2 in SC today as well, 30 miles from Greenville.

[ruesrose]

We had a 3.2 in SC today as well, 30 miles from Greenville.

[KarlInOhio]

I think normal traffic is 3.5 in California.

[ken5050]

Tim Johnson announced he was retiring?

[thackney]

A 3.4? Did anyone even feel it?

[US Navy Vet]

The US Army Corps of Engineers has been letting ALOT of water through ALL of the SD Missouri River Dams, wonder if that has SOMETHING to do w/ this earthquake(just wondering)?

[Dubya-M-Dees]

It’s all the bikers showing up for STURGIS!!

http://www.sturgismotorcyclerally.com/

[MrB]

Thanks, that was my question...

hmmm...

false teachers in a mass “prayer meeting” in Texas,
earthquakes in strange places,
riots and random mob violence...

as it was in the days of Noah...

[Keith in Iowa]

>>>A 3.4? Did anyone even feel it?

http://earthquake.usgs.gov/earthquakes/dyfi/events/us/c0005b9i/us/index.html

Says 66 responses in two zip codes so far...

[mad_as_he$$]

There is a theory (actually many) that hold that water saturation is the cause of some earthquakes. The great San Francisco quake may have been caused by the filling of Crystal Springs Reservoir that sits directly on to of the San Andreas Fault.

[RJS1950]

There are a number of somewhat inactive faults that run up through ND, SD and NE.

I noted shaking/rumbling ground movement from several Central/South American quakes of larger magnitude when I was a missile crew member at Minot ND. It was enough to cause the suspended crew capsule to noticably sway and to put all of the Minuteman missiles into a gyroscopic safe/locked mode.

[Gator113]

I’ve done that 4 times, so I would have to agree. LOL

[thackney]

I found it Alaska it was hard to even notice anything near a 4.0. You had to be setting still and quiet with a point of reference like arms on a desk. You still might miss it then.

[bgill]

Dallas had one yesterday. That’s Texas, South Dakota, and South Carolina. What’s the weather been like in SD and SC? Texas has been having the worst drought in over 100 years so that might have been the cause. That, or Australia last year and Japan a few months ago so it’s made the rounds and is hitting the US. Bad times ahead, folks.

[Red Badger]

'Tim Johnson' was the name of the mad dog that Atticus shot in To Kill a Mockingbird...............

[TexasTransplant]

Cool ... Natural Fraking

Take that Tree Huggers

TT

[HerrBlucher]

Interesting how a little 3.5 quake can can be extrapolated into “We are all going to die.” It doesn’t take much in FReeperville...sigh.

[norwaypinesavage]

Actually, the tree huggers will blame this on unnatural fracking and use that as an excuse to shut down oil drilling in the Bakken fields.

[reaganaut]

Pretty much in the middle of nowhere. I have an uncle near there and he didn’t feel it at all.