Hi All,

Below is the post I made earlier about Subject A of my ear tone group. I have to say that I assumed her ear tone was for the Sierra's because of the high pitch. But as I can't hear what she heard, then there is a margin of error on my behalf.

Subject A resides 139 miles from the 6.0. We normally grant a 37.5 mile radius for our group, however, under the circumstances, this places her only 9 miles outside of that range. I think we should be giving of 9 miles and credit her with the very first signal for this Parkfield event.

Congratulations Subject A!

Petra

Interesting Ear Tone Report
Posted by Petra on September 20, 2004 at 23:12:18:
Hi All,

Subject A of our ear tone group reported the following ear tone today:

At 6:37 p.m. PDT today (9/20/04) I heard a loud, approximately 5-second tone with BOTH ears so can't guess what direction it indicates. External sounds were only partially blocked. It was loud and piercing, and its pitch was high - more than 2 octaves above middle C.

I'll comment on some interesting notes from experience about this subjects experience. It is extremely rare to hear an ear tone in both ears at the same time. The high pitch normally is associated with an area which is granite or of very heavy rock structure. The loudness of the sound depicts a quake which should be a 4.7 or greater event. Most ear tones for the backbone of the Sierra's are high pitched and loud even though by comparison to other areas the quakes are usually moderate, though they sound like it should produce a whopper.

I spent about an hour searching out possible locations to expect this earthquake and Don also helped as well. This earthquake should be about 187 miles NE, E OR SE from near Livermore, CA. Dennis Gentry who used to post here had a method called concentric circles, which I remembered tonight when working on this problem.

NE - Hawthorne, NV - 183 miles
E - Qualeys Camp - 158 miles (to short)
E - Mina, NV - 197 miles (close)

As you can see the location is beyond this recent swarm, thus this ear tone is unrelated.

Our usual window is ten days so we will be looking for this moderate earthquake east of the Sierra's by midnight on 9/30/04 with a radius of within 37.5 miles.

If you want to have some fun looking for other interesting possible locations just use our 37.5 mile per second calculation and look for places 187 miles from near Livermore,CA.

Petra