Ear Tone Report
Posted by Petra Challus on May 03, 2002 at 18:39:09:

Hi All,

Every now and then something positive happens in the ear tone department and this is just one of those, so for my fellow ear tone sensitive friends and others, I thought I'd share the origins of this one and the results.

First came the ear tone as reported:

----- Original Message -----
From: Petra Nova Challus
To: Don Eck
Sent: Sunday, April 28, 2002 2:56 PM
Subject: EAR TONE REPORT 4/28/02 2:52PM PDT

Hi Don,

I had a left ear tone, medium low in volume lasting approximately 3 1/4 seconds long.

Petra

That led to posting this message #15314 on 4/28 as follows:

Re: 4.4 M event in Ferndale
Posted by Petra Challus on April 28, 2002 at 21:13:22:
In Reply to: Re: 4.4 M event in Ferndale posted by Mary C. on April 28, 2002 at 19:51:58:

Hi All,

It ain't over yet. One more incoming for now on the list and it appears this will be closer to Hyampom or Hayford in about a week or less. Could be high 2's or low 3's.

Meanwhile I'm expecting a popcorn quake between Yountville to Calistoga. Just for fun.

Petra

Quake #1 was 28 miles from Hayfork:

Magnitude 2.6 - local magnitude (Ml)
Time Thursday, May 2, 2002 at 6:19:34 AM (PDT)
Thursday, May 2, 2002 at 13:19:34 (UTC)
Distance from Covelo, CA - 41 km (25 miles) N (9 degrees)
Hayfork, CA - 44 km (28 miles) S (179 degrees)
Redway, CA - 55 km (34 miles) E (86 degrees)
Redding, CA - 82 km (51 miles) SW (235 degrees)

Coordinates 40 deg. 9.4 min. N (40.157N), 123 deg. 10.4 min. W (123.174W)
Depth 35.2 km (21.9 miles)

Quake #2 was at Calistoga:

Magnitude 2.1 - duration magnitude (Md)
Time Friday, May 3, 2002 at 2:02:24 PM (PDT)
Friday, May 3, 2002 at 21:02:24 (UTC)
Distance from Calistoga, CA - 7 km (4 miles) WSW (245 degrees)
Santa Rosa, CA - 14 km (8 miles) NNE (24 degrees)
Windsor, CA - 14 km (9 miles) E (88 degrees)
Saint Helena, CA - 17 km (10 miles) WNW (288 degrees)

Coordinates 38 deg. 33.1 min. N (38.552N), 122 deg. 38.9 min. W (122.649W)
Depth 4.2 km (2.6 miles)

For the record, I do not send e-mail reports to Don for small local quakes. If I did, I'd be writing him night and day as I hear them to frequently and they are to small to be of any consequence.

Petra