2/28/2015 — New Madrid earthquake — 3.0 magnitude shakes normally quiet area

A 3.0 magnitude earthquake has struck the New Madrid Seismic Zone (NMSZ) located in Southern Missouri.

new madrid 3.0M earthquake feb 28 2015

 

Any movement over a 1.0M-2.0M in this region should be made note of.  Especially at a time where we are seeing excessive seismic movement elsewhere nearby.

It is troubling for us to see movement in this region, being that I live in St. Louis Missouri, just due North of the major NMSZ strike zone.

I am not surprised to see movement occur at this point.

Over the past 24-48 hours (up to 5pm CST February 28, 2015) we have seen multiple earthquakes strike Dallas Texas, Alabama, Oklahoma, and along the East coast (Virginia, New York, Pennsylvania, and North Carolina).

This indicates major pressure on the edge of the craton, being revealed by earthquakes all along the Southern , Eastern, and Western portions of the plate.

east coast earthquakes feb 28 2015

300px-North_america_craton_nps


The New Madrid Seismic Zone is an area which had the greatest magnitude earthquakes in the continental United States History.

In the winter months of December 1811, into January – February 1812… a series of large 7.0 – 8.0 magnitude earthquakes.

The location shown in dark red (via this USGS chart) shows the area in question, with the % of risk for another large earthquake over the next 50 years (as of 2009).

2008hazardmap

3.1accelerationmap


The movement seen in the South United states FOLLOWS a “hidden” 6.0 magnitude earthquake which struck off the shores of Puerto Rico yesterday, February 27 2015.

 

usgs hiding earthquakes feb 27 2015


Information on this event from the USGS:

http://earthquake.usgs.gov/earthquakes/eventpage/nm60070727#scientific_summary

Event Location

Data Source NM1

Map showing extent (w,s,e,n) = (-94.6388321, 31.543834699999998, -84.6388321, 41.5438347)
36.544°N 89.639°W depth=14.6 kmView interactive map

Event Time

  1. 2015-02-28 23:08:44 (UTC)
  2. 2015-02-28 17:08:44 (UTC-06:00) in your timezone
  3. Times in other timezones

Nearby Cities

  1. 5km (3mi) SSW of Lilbourn, Missouri
  2. 37km (23mi) S of Sikeston, Missouri
  3. 50km (31mi) NE of Kennett, Missouri
  4. 53km (33mi) WNW of Union City, Tennessee
  5. 259km (161mi) W of Nashville, Tennessee

 

Magnitude / uncertainty 3.0 md± 0.4
Location / uncertainty 36.544°N 89.639°W± 0.2 km
Depth / uncertainty 14.6 km± 0.3
Origin Time 2015-02-28 23:08:44.300 UTC
Number of Stations 38
Number of Phases 32
Minimum Distance 10.47 km (0.09°)
Travel Time Residual 0.13 sec
Azimuthal Gap 41°
FE Region Missouri (486)

One thought on “2/28/2015 — New Madrid earthquake — 3.0 magnitude shakes normally quiet area

  1. Pingback: 23 Disasters That Could Happen Tomorrow - Funblab

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