Code 3 Alert at giant Louisiana sinkhole — “Increasing trend of subsurface activity in the area”

Published: April 15th, 2013 at 1:47 pm ET


Title: 11:45 a.m. Advisory from the Office of Conservation
Source: Assumption Parish Police Jury
Date: April 15, 2013 at 12:45p ET

The Office of Conservation, in consultation with Assumption Parish Incident Command, is advising the public that the Oxy 3/sinkhole monitoring alert status has been raised to Code 3 – requiring all work inside and around the sinkhole to cease until further notice. Per Dr. Stephen Horton with USGS, seismic monitoring has detected an increasing trend of subsurface activity in the area around the sinkhole and Oxy 3 area below the sinkhole over the past few days. The seismic activity is limited to the Oxy 3/sinkhole area, showing no indication of impact to the Oxy 1 area. Monitoring is constantly ongoing in the area and Conservation will advise the public of significant changes in subsurface conditions.

Watch the latest flyover footage here

Published: April 15th, 2013 at 1:47 pm ET


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8 comments to Code 3 Alert at giant Louisiana sinkhole — “Increasing trend of subsurface activity in the area”

  • Proton

    the footage linked from the article was shot 4/9/13? Almost a week old and most current?

  • bwoodfield bwoodfield

    Frankly I'm surprised no one has a webcam on this yet.

  • Lion76 Lion76

    public safety and information is not on the agenda

  • HoTaters HoTaters

    markww, or anyone out there with knowledge of emergency planning or emergency monitoring, would you please elaborate on what Code 3 means? What does it entail? How is this different from other alert levels?


  • dana dana

    Below you will find explanations of the codes used by the Office of Conservation specific to the sinkhole.

    Code Levels are 1-3, with Code 1 being the lowest level of alert.

    Code 1: Minimal to no seismic activity around/below sinkhole; 10 or fewer of the sharp seismic signals associated with rock movement, called mini-earthquakes (MEQs) or the longer signals associated with gas or liquid movement, called Very Long Periods (VLPs) within 24-hour period; allows work on sinkhole and inside berm area to continue

    Code 2: Restricts work directly on the sinkhole, indicates some increased seismic activity around/below sinkhole but not at a level that indicates imminent threat of sloughing or movement below sinkhole (10 to 50 MEQs or VLPs in 24 hours)

    Code 3: Restricts all work inside the containment berm, indicates seismic activity has elevated to a point similar to what has been seen in past monitoring prior to a sloughing on the shore or movement beneath sinkhole (More than 50 MEQs or VLPs in 24 hours)

  • wetpwcas1 wetpwcas1

    Code 4 must be kiss you butt good bye. If the slat dome does go, we will see a hell of a Fukajapan real fast!