I got this event very clear! and and it was on Ceri  PWLA EHZ NM : Pickwick Lake, AL Helicorder Display. I wrote a letter to CERI asking why it was not ploted on the  Recent Earthquakes in Central US.  I got a reply and do appreicate they took time to investigate.They are very nice.
I would like to know what you all on the list think,does this happen often?? links to my event and the CERI seismograph 30 miles north of me are at the bottom of the page.

The prociding is the letter they sent me back. 





Hi Bryan:


You can just barely see this one on our next closest stations, OXF and LRAL.
These events can be seen very well on PWLA but not on a sufficient number of
other stations to reliably locate it.  We only publish reliably located events.
It is a bit of an enigma where the events are actually coming from (most
likely south of PWLA, or perhaps local and shallow) and why.  PWLA is an unusually
sensitive stations and records well events not seen by the rest of the network.

On Thu, 14 Apr 2005, Bryan Goss wrote:

> I did not see this event on the Recent Earthquakes in Central US.
>
> UTC    4/13/05    14:06:16
>
>
> This is Ceri  PWLA EHZ NM : Pickwick Lake, AL Helicorder Display
> http://folkworm.ceri.memphis.edu/heli_nm/PWLA_EHZ_NM.2005041300.gif
>
>
> I saw it on my homebuilt Lehman seismometer
> In Corinth MS. as well this is why I ask.
> https://home.comcast.net/~bryangoss/micro.jpg 

I also submitted this on the CERI  ask a  Ask a Seismologist / Geologist Page .

Mitch

Center for Earthquake Research and Information (CERI)
University of Memphis                Ph: 901-678-4940
Memphis, TN 38152                   Fax: 901-678-4734

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