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GeoSeismic Labs Reports: April, 2006All forecasts are based upon Quantitative Analysis using Empirical Methods.
Any information related to a forecast expressed by GeoSeismic Labs is considered a test of
a hypothesis, and experimental in nature.
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GSL's Reports have Been Viewed
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Acoustic Emissions Catalog Table of Contents
PREDICTION OF EARTHQUAKES WITH AE/MS? WHY NOT
Introduction: Acoustic Emissions and Earthquakes
Acoustic emission and earthquake precursors
Topic: Acoustic Emission Precursors of Large California Earthquakes
Technologies and Applications Acoustic Emission* (AE)
Rock Mechanics - Laboratory and Theoretical Studies
Fracture experiment of large rock samples with acoustic emission
AE:Back to Basics
Lithospheric Deformation: Stress & Strain
The San Andreas Fault: Stress & Heat Flow
Caption:The inferred Mean Average Unclamping Incident Level Observed from
the Pacific & North American Plate Boundary in Southern California.
Major Global Earthquakes have been Preceded by abrupt increases in the
Unclamping Incident Level, as observed during both
December 2004, and
October 2005.
The Pacific Plate is inferred to have transmitted the changes observed here
from a large increase in lithospheric stress along the Sunda Trench, and the
Eurasian Plate. The inference was first made after the M9.2 Great Sumatra
Earthquake, which was preceded by an abrupt increase in the local Unclamping
Incident Level. Since then, I've experimentally utilized the Unclamping Incident
Level as a means for monitoring global tectonic stress levels, with quite
excellent results
My philosophy is quite simply:
"The Plate Boundary including the western edge of the (ECSZ)
Eastern California Shear Zone is the interface for the transmission of
Infrasonic, or (AE) Acoustic Emissions. Secondary faults are the handshake
lines, which handle the nucleation of the stress..The data lines are the
harmonics, which indicate the severity and the approximate lattitude of the
location by having a different amplitude and frequency for each of the specific
harmonics in the infrasound spectrum. I monitor and record these
frequencies, and analyze the results, which allows me to publish a specific
forecast of the current regional lithospheric stress level. It's not magic, just
good old fashioned hard work while conducting an analysis. I believe
these infrasonic signals are the same ones, which enable many pets,
wild animals, and humans to sense an increase in the level of
stress before an earthquake happens. Also, I utilize the Spring Tides
Lunar Phases and Solar Activity level in my forecasts."
-Frank Condon
Independent Earthquake Precursor Research Consultant
NOTE: A more detailed version is available
as my Statement Summary.
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
N/A
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.7 2006/04/15 05:43:23 37.605 -118.813 6.5 13 km ( 8 mi) WNW of Toms Place, CA
ML1.4 2006/04/15 05:42:50 33.949 -116.994 18.8 3 km ( 2 mi) NW of Beaumont, CA
ML2.5 2006/04/15 04:49:24 40.580 -124.535 22.2 23 km ( 14 mi) W of Ferndale, CA
ML1.6 2006/04/15 03:20:17 35.614 -116.734 6.7 32 km ( 20 mi) NNE of Goldstone Lake, CA
ML1.5 2006/04/15 03:16:06 34.548 -118.756 14.3 13 km ( 8 mi) W of Castaic Lake dam, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.5 2006/04/15 07:47:50 33.781 -117.648 6.3 10 km ( 6 mi) N of Foothill Ranch, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML2.9 2006/04/15 11:24:09 39.986 -120.888 14.1 6 km ( 4 mi) NNE of East Quincy, CA
ML2.2 2006/04/15 10:58:40 35.712 -120.979 10.7 9 km ( 6 mi) WSW of Lake Nacimiento, CA
ML1.9 2006/04/15 10:16:49 34.458 -116.504 5.9 38 km ( 23 mi) NNW of Yucca Valley, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML2.0 2006/04/15 13:53:33 37.284 -115.420 0.0 24 km ( 15 mi) WSW of Alamo, NV
ML1.2 2006/04/15 13:38:31 33.871 -116.199 14.2 17 km ( 11 mi) N of Indio, CA
ML1.5 2006/04/15 13:28:44 33.993 -117.201 7.5 8 km ( 5 mi) SSW of Redlands, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.7 2006/04/15 17:04:56 36.474 -121.053 6.7 10 km ( 6 mi) SE of Pinnacles, CA
ML1.4 2006/04/15 16:43:40 33.450 -116.632 12.1 12 km ( 8 mi) SSE of Anza, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.1 2006/04/15 20:55:10 33.786 -116.174 3.9 9 km ( 6 mi) NE of Indio, CA
ML1.8 2006/04/15 20:14:14 33.947 -116.995 18.4 3 km ( 2 mi) NW of Beaumont, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.4 2006/04/15 21:36:20 35.865 -120.407 4.9 4 km ( 3 mi) SSE of Parkfield, CA
ML1.7 2006/04/15 21:17:28 38.801 -122.813 3.9 1 km ( 0 mi) WNW of The Geysers, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.3 2006/04/16 01:56:11 34.006 -116.865 17.3 9 km ( 5 mi) NNE of Banning, CA
ML2.3 2006/04/16 01:07:48 38.819 -122.801 3.9 2 km ( 1 mi) NNE of The Geysers, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML2.7 2006/04/16 04:41:40 36.844 -121.578 7.0 4 km ( 2 mi) W of San Juan Bautista, CA
ML2.0 2006/04/16 04:04:31 37.932 -118.542 6.0 42 km ( 26 mi) S of Qualeys Camp, NV
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.7 2006/04/16 07:49:56 33.472 -116.899 19.4 13 km ( 8 mi) NNW of Palomar Observatory, CA
ML1.4 2006/04/16 07:39:48 34.916 -118.486 14.2 23 km ( 14 mi) SE of Stallion Springs, CA
ML1.8 2006/04/16 07:27:48 33.962 -117.169 17.6 7 km ( 4 mi) NE of Moreno Valley, CA
ML2.8 2006/04/16 06:37:26 37.857 -122.239 9.2 4 km ( 2 mi) ESE of Berkeley, CA
ML1.5 2006/04/16 06:25:29 36.842 -121.589 0.1 5 km ( 3 mi) W of San Juan Bautista, CA
ML1.6 2006/04/16 06:07:50 38.802 -122.799 3.6 1 km ( 0 mi) ENE of The Geysers, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.4 2006/04/16 11:51:20 34.058 -116.697 7.1 11 km ( 7 mi) W of Morongo Valley, CA
ML1.4 2006/04/16 11:36:53 33.662 -116.747 13.8 10 km ( 6 mi) SSW of Idyllwild, CA
ML1.5 2006/04/16 11:14:23 38.816 -122.805 3.6 2 km ( 1 mi) N of The Geysers, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.1 2006/04/16 14:46:00 33.339 -116.407 13.9 11 km ( 7 mi) NNW of Borrego Springs, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML2.0 2006/04/16 17:17:02 37.437 -118.577 11.7 3 km ( 2 mi) NE of Round Valley, CA
ML2.0 2006/04/16 16:54:19 38.809 -122.786 1.7 2 km ( 1 mi) ENE of The Geysers, CA
ML1.7 2006/04/16 16:47:54 36.456 -120.993 1.3 16 km ( 10 mi) ESE of Pinnacles, CA
ML1.1 2006/04/16 15:59:23 34.012 -116.795 19.5 10 km ( 6 mi) SSE of Mt. San Gorgonio, CA
ML1.7 2006/04/16 15:50:44 38.789 -122.775 4.7 3 km ( 2 mi) ESE of The Geysers, CA
ML1.8 2006/04/16 15:04:11 38.984 -123.047 6.2 13 km ( 8 mi) WSW of Lakeport, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.3 2006/04/16 18:51:12 33.789 -116.175 6.0 9 km ( 6 mi) NE of Indio, CA
ML1.8 2006/04/16 18:15:38 33.880 -116.212 11.8 18 km ( 11 mi) ENE of Thousand Palms, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML3.6 2006/04/16 22:25:42 40.379 -124.917 11.3 54 km ( 33 mi) W of Petrolia, CA
ML1.5 2006/04/16 21:54:22 33.991 -117.203 8.3 8 km ( 5 mi) NNE of Moreno Valley, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML2.5 2006/04/17 02:54:33 41.984 -122.843 3.1 25 km ( 16 mi) WNW of Hornbrook, CA
ML1.6 2006/04/17 02:02:16 38.794 -122.806 4.3 0 km ( 0 mi) S of The Geysers, CA
ML1.1 2006/04/17 01:10:59 33.350 -116.379 16.4 11 km ( 7 mi) N of Borrego Springs, CA
ML1.3 2006/04/17 00:24:35 36.030 -117.588 2.8 27 km ( 16 mi) S of Darwin, CA
ML2.0 2006/04/17 00:20:14 35.737 -121.036 1.3 14 km ( 9 mi) W of Lake Nacimiento, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.0 2006/04/17 05:51:41 33.414 -116.777 0.0 10 km ( 6 mi) NE of Palomar Observatory, CA
ML1.7 2006/04/17 05:46:46 38.818 -122.817 3.3 2 km ( 1 mi) NNW of The Geysers, CA
ML1.6 2006/04/17 04:22:42 38.783 -122.784 2.5 3 km ( 2 mi) SE of The Geysers, CA
ML1.3 2006/04/17 03:42:53 33.291 -116.762 17.8 6 km ( 4 mi) N of Lake Henshaw, CA
ML1.0 2006/04/17 03:20:27 37.579 -118.862 7.0 12 km ( 8 mi) ESE of Mammoth Lakes, CA
ML1.2 2006/04/17 03:13:00 33.406 -116.954 16.1 10 km ( 6 mi) NW of Palomar Observatory, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML2.0 2006/04/17 07:52:08 36.709 -121.344 3.5 9 km ( 6 mi) SSW of Tres Pinos, CA
ML1.5 2006/04/17 06:23:54 33.270 -116.194 17.3 15 km ( 9 mi) NNW of Ocotillo Wells, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.3 2006/04/17 11:14:14 33.809 -116.197 3.7 10 km ( 6 mi) NNE of Indio, CA
ML1.8 2006/04/17 11:03:10 34.672 -116.331 7.7 17 km ( 10 mi) WSW of Ludlow, CA
ML1.7 2006/04/17 10:33:41 33.452 -116.639 11.1 12 km ( 7 mi) SSE of Anza, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
N/A
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.5 2006/04/17 17:23:02 36.708 -121.346 3.4 9 km ( 6 mi) SSW of Tres Pinos, CA
ML1.4 2006/04/17 15:26:09 33.103 -116.951 32.9 11 km ( 7 mi) NW of Ramona, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.8 2006/04/17 20:21:31 33.533 -117.121 17.0 3 km ( 2 mi) N of Temecula, CA
ML3.3 2006/04/17 20:14:51 36.714 -116.055 5.6 37 km ( 23 mi) WNW of Indian Springs, NV
ML1.6 2006/04/17 20:09:28 38.813 -122.813 3.8 2 km ( 1 mi) NNW of The Geysers, CA
ML1.3 2006/04/17 18:29:44 36.463 -121.035 7.4 12 km ( 8 mi) SE of Pinnacles, CA
21:00-24:00 UTC
Return to Table of Contents
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.9 2006/04/17 22:20:10 35.953 -115.203 0.0 9 km ( 5 mi) S of Enterprise, NV
ML1.5 2006/04/17 21:47:59 36.856 -121.571 1.3 3 km ( 2 mi) WNW of San Juan Bautista, CA
ML1.3 2006/04/17 21:06:51 38.818 -122.794 4.0 2 km ( 2 mi) NNE of The Geysers, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.9 2006/04/18 02:38:57 38.794 -122.778 4.7 3 km ( 2 mi) E of The Geysers, CA
ML1.3 2006/04/18 02:30:53 40.063 -123.261 9.2 29 km ( 18 mi) N of Covelo, CA
ML1.4 2006/04/18 01:00:49 36.017 -120.546 1.2 17 km ( 10 mi) NW of Parkfield, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.7 2006/04/18 05:12:47 34.512 -118.098 13.5 8 km ( 5 mi) S of Palmdale, CA
ML1.1 2006/04/18 04:43:24 33.715 -116.768 20.8 6 km ( 4 mi) WSW of Idyllwild, CA
ML1.8 2006/04/18 04:27:42 34.075 -118.389 9.3 1 km ( 1 mi) E of Beverly Hills, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML2.0 2006/04/18 08:12:41 33.967 -116.572 8.4 6 km ( 4 mi) W of Desert Hot Springs, CA
ML1.0 2006/04/18 07:21:57 36.508 -121.092 4.7 5 km ( 3 mi) ESE of Pinnacles, CA
ML1.8 2006/04/18 06:51:25 33.923 -117.780 9.7 4 km ( 3 mi) N of Yorba Linda, CA
ML1.7 2006/04/18 06:36:33 36.888 -121.327 4.7 8 km ( 5 mi) NE of Hollister, CA
ML1.3 2006/04/18 06:21:03 37.433 -118.885 21.3 23 km ( 14 mi) SW of Toms Place, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.3 2006/04/18 11:32:27 33.788 -116.174 7.0 9 km ( 6 mi) NE of Indio, CA
ML1.1 2006/04/18 11:06:52 37.581 -118.862 8.5 12 km ( 7 mi) ESE of Mammoth Lakes, CA
ML1.5 2006/04/18 10:22:09 36.161 -118.071 4.9 13 km ( 8 mi) SSW of Olancha, CA
ML1.4 2006/04/18 10:16:15 33.880 -116.329 7.2 9 km ( 5 mi) NE of Thousand Palms, CA
ML1.9 2006/04/18 09:49:11 32.706 -116.061 3.7 7 km ( 4 mi) WSW of Ocotillo, CA
ML1.9 2006/04/18 09:48:03 32.705 -116.050 7.7 6 km ( 4 mi) SW of Ocotillo, CA
ML1.4 2006/04/18 09:10:39 35.268 -118.603 5.9 4 km ( 2 mi) NNW of Keene, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML2.3 2006/04/18 14:35:07 38.799 -122.796 1.9 1 km ( 1 mi) E of The Geysers, CA
ML2.3 2006/04/18 13:55:20 35.730 -121.076 2.7 14 km ( 9 mi) NE of San Simeon, CA
ML1.4 2006/04/18 13:21:05 33.886 -116.342 8.4 9 km ( 5 mi) NNE of Thousand Palms, CA
ML1.7 2006/04/18 12:53:48 33.304 -116.731 17.9 8 km ( 5 mi) NNE of Lake Henshaw, CA
ML1.6 2006/04/18 12:30:24 33.981 -116.837 18.6 8 km ( 5 mi) NE of Banning, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML2.3 2006/04/18 20:59:18 40.559 -123.557 27.9 35 km ( 22 mi) W of Hayfork, CA
ML1.0 2006/04/18 20:54:53 37.840 -122.006 8.7 3 km ( 2 mi) SE of Alamo, CA
ML1.5 2006/04/18 19:03:11 33.855 -117.448 0.0 7 km ( 4 mi) ENE of El Cerrito, CA
ML1.7 2006/04/18 18:24:24 33.664 -116.951 16.5 9 km ( 6 mi) SSE of Hemet, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.6 2006/04/18 23:39:15 38.807 -122.826 4.0 2 km ( 1 mi) WNW of The Geysers, CA
ML1.0 2006/04/18 22:42:48 37.428 -118.620 10.0 2 km ( 2 mi) NW of Round Valley, CA
ML1.1 2006/04/18 22:07:50 33.597 -116.025 12.9 5 km ( 3 mi) ENE of Mecca, CA
ML1.5 2006/04/18 21:01:35 38.825 -122.827 3.0 4 km ( 2 mi) NNW of The Geysers, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.1 2006/04/19 02:36:41 33.044 -116.389 8.9 19 km ( 12 mi) E of Julian, CA
ML1.0 2006/04/19 01:51:51 34.650 -116.291 4.4 14 km ( 9 mi) SW of Ludlow, CA
ML1.2 2006/04/19 00:30:59 33.840 -116.738 13.0 8 km ( 5 mi) SSE of Cabazon, CA
ML2.9 2006/04/19 00:20:32 36.231 -120.798 11.1 23 km ( 14 mi) ENE of San Lucas, CA
ML1.7 2006/04/19 00:16:08 33.342 -116.816 5.8 5 km ( 3 mi) ESE of Palomar Observatory, CA
ML2.3 2006/04/19 00:15:30 34.649 -117.745 8.8 9 km ( 6 mi) ENE of Lake Los Angeles, CA
ML1.6 2006/04/19 00:04:27 35.035 -117.676 0.0 3 km ( 2 mi) NNW of Boron, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.3 2006/04/19 05:41:41 37.592 -118.462 9.5 19 km ( 12 mi) E of Toms Place, CA
ML1.1 2006/04/19 05:37:09 37.110 -121.829 4.8 11 km ( 7 mi) NNE of Day Valley, CA
ML1.2 2006/04/19 05:26:17 33.939 -116.659 6.5 10 km ( 7 mi) ENE of Cabazon, CA
ML2.4 2006/04/19 03:33:17 40.322 -124.456 6.0 14 km ( 9 mi) W of Petrolia, CA
ML1.8 2006/04/19 03:04:23 32.353 -116.963 6.0 7 km ( 4 mi) ENE of Rosarito, Mexico
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.8 2006/04/19 08:25:10 34.585 -116.274 5.5 18 km ( 11 mi) SW of Ludlow, CA
ML2.0 2006/04/19 08:10:42 34.103 -117.316 15.5 4 km ( 2 mi) SW of San Bernardino, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.6 2006/04/19 11:27:01 33.191 -115.602 2.9 4 km ( 2 mi) NE of Obsidian Butte, CA
ML1.4 2006/04/19 10:09:58 36.016 -120.626 2.2 22 km ( 13 mi) NW of Parkfield, CA
ML2.0 2006/04/19 09:31:14 34.562 -118.960 15.4 18 km ( 11 mi) NNW of Fillmore, CA
ML1.0 2006/04/19 09:25:42 33.471 -116.491 13.2 19 km ( 12 mi) ESE of Anza, CA
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Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.0 2006/04/19 14:39:34 33.360 -116.340 11.3 13 km ( 8 mi) NNE of Borrego Springs, CA
ML1.7 2006/04/19 14:03:44 35.195 -119.052 6.0 13 km ( 8 mi) WSW of Weedpatch, CA
ML1.4 2006/04/19 13:11:40 37.477 -118.779 15.2 13 km ( 8 mi) SW of Toms Place, CA
ML2.1 2006/04/19 12:31:25 38.822 -122.809 4.7 3 km ( 2 mi) N of The Geysers, CA
ML1.3 2006/04/19 12:04:39 36.488 -118.010 10.3 12 km ( 8 mi) W of Keeler, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.1 2006/04/19 17:24:25 34.852 -118.776 0.0 9 km ( 6 mi) NE of Gorman, CA
ML1.9 2006/04/19 16:39:47 32.118 -116.416 6.0 34 km ( 21 mi) NE of Ensenada, Mexico
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.3 2006/04/19 20:53:05 38.810 -122.794 4.4 2 km ( 1 mi) NE of The Geysers, CA
ML2.1 2006/04/19 20:32:37 38.791 -122.774 5.1 3 km ( 2 mi) ESE of The Geysers, CA
ML1.0 2006/04/19 19:53:28 35.049 -118.319 0.0 12 km ( 8 mi) WNW of Mojave, CA
ML1.7 2006/04/19 19:18:09 38.577 -117.162 0.0 57 km ( 35 mi) N of Tonopah, NV
ML1.8 2006/04/19 19:16:35 39.402 -123.301 3.2 4 km ( 3 mi) E of Willits, CA
ML1.7 2006/04/19 19:05:42 34.323 -116.771 0.0 9 km ( 6 mi) NE of Big Bear City, CA
ML1.5 2006/04/19 18:44:52 32.707 -116.914 0.0 4 km ( 2 mi) SW of Jamul, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.1 2006/04/19 23:51:56 33.494 -116.557 12.0 12 km ( 8 mi) ESE of Anza, CA
ML2.3 2006/04/19 22:38:36 40.029 -118.169 12.3 31 km ( 19 mi) ESE of Lovelock, NV
ML1.9 2006/04/19 22:14:31 33.889 -117.868 10.7 1 km ( 1 mi) W of Placentia, CA
ML2.0 2006/04/19 21:22:30 38.767 -122.709 2.8 2 km ( 1 mi) WSW of Anderson Springs, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.5 2006/04/20 01:08:41 33.663 -116.762 14.8 10 km ( 6 mi) SSW of Idyllwild, CA
ML1.5 2006/04/20 00:59:47 36.517 -121.094 2.1 5 km ( 3 mi) ESE of Pinnacles, CA
ML1.5 2006/04/20 00:04:48 35.027 -117.678 0.0 2 km ( 1 mi) NW of Boron, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.9 2006/04/20 05:39:18 33.342 -116.359 14.8 11 km ( 7 mi) N of Borrego Springs, CA
ML2.1 2006/04/20 03:03:54 36.820 -121.543 5.6 3 km ( 2 mi) S of San Juan Bautista, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.0 2006/04/20 08:47:19 35.680 -117.557 4.2 13 km ( 8 mi) ENE of Ridgecrest, CA
ML2.4 2006/04/20 07:11:44 38.811 -122.796 4.5 2 km ( 1 mi) NE of The Geysers, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML2.1 2006/04/20 11:51:30 38.793 -122.805 4.3 1 km ( 0 mi) SSE of The Geysers, CA
ML1.5 2006/04/20 09:08:50 33.245 -116.123 11.0 11 km ( 7 mi) N of Ocotillo Wells, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.6 2006/04/20 14:44:22 33.977 -116.995 17.5 6 km ( 4 mi) NNW of Beaumont, CA
ML2.8 2006/04/20 14:33:10 40.409 -125.042 1.3 65 km ( 40 mi) W of Petrolia, CA
ML2.0 2006/04/20 13:52:26 34.066 -117.160 13.6 2 km ( 1 mi) NE of Redlands, CA
ML1.7 2006/04/20 13:06:47 37.808 -122.073 11.4 6 km ( 4 mi) SE of Moraga, CA
ML1.6 2006/04/20 12:50:14 36.016 -117.399 3.6 28 km ( 17 mi) N of Trona, CA
ML1.4 2006/04/20 12:26:18 37.944 -122.112 10.2 4 km ( 2 mi) WSW of Pleasant Hill, CA
ML1.4 2006/04/20 12:00:14 36.660 -121.277 11.1 15 km ( 9 mi) SSE of Tres Pinos, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.3 2006/04/20 17:46:15 38.812 -122.817 2.7 2 km ( 1 mi) NNW of The Geysers, CA
ML1.2 2006/04/20 17:09:58 37.425 -118.434 4.2 7 km ( 4 mi) N of West Bishop, CA
ML1.2 2006/04/20 16:24:44 33.306 -116.281 15.6 11 km ( 7 mi) NE of Borrego Springs, CA
ML1.5 2006/04/20 15:00:04 37.496 -118.843 8.4 16 km ( 10 mi) WSW of Toms Place, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML2.0 2006/04/20 20:32:50 38.791 -122.745 3.3 5 km ( 3 mi) WNW of Anderson Springs, CA
ML1.1 2006/04/20 20:08:05 34.028 -117.228 16.1 3 km ( 2 mi) SE of Loma Linda, CA
ML1.2 2006/04/20 19:23:01 33.326 -116.332 12.6 10 km ( 6 mi) NNE of Borrego Springs, CA
ML1.0 2006/04/20 19:22:22 33.330 -116.339 12.9 10 km ( 6 mi) NNE of Borrego Springs, CA
ML1.3 2006/04/20 19:00:13 33.838 -117.490 3.5 3 km ( 2 mi) E of El Cerrito, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.7 2006/04/20 23:42:12 38.830 -122.796 2.1 4 km ( 2 mi) NNE of The Geysers, CA
ML1.9 2006/04/20 22:56:07 35.364 -118.637 3.4 15 km ( 9 mi) NNW of Keene, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.1 2006/04/21 00:14:38 37.146 -121.542 7.3 8 km ( 5 mi) NE of San Martin, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.4 2006/04/21 03:59:29 35.994 -120.556 5.2 15 km ( 9 mi) NW of Parkfield, CA
ML1.5 2006/04/21 03:44:10 33.473 -116.423 5.8 25 km ( 15 mi) ESE of Anza, CA
ML1.7 2006/04/21 03:02:49 38.826 -122.835 2.0 4 km ( 2 mi) NW of The Geysers, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML2.4 2006/04/21 08:07:55 33.824 -119.407 0.1 41 km ( 25 mi) SSW of Channel Islands Beach, CA
ML1.6 2006/04/21 06:52:26 35.364 -118.628 3.6 14 km ( 9 mi) NNW of Keene, CA
ML1.5 2006/04/21 06:34:40 38.793 -122.778 4.7 3 km ( 2 mi) ESE of The Geysers, CA
ML1.0 2006/04/21 06:09:40 37.391 -121.699 10.1 11 km ( 7 mi) ENE of Alum Rock, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.4 2006/04/21 11:51:38 33.475 -116.412 8.6 25 km ( 15 mi) SSW of La Quinta, CA
ML1.1 2006/04/21 10:35:36 33.808 -116.188 14.4 11 km ( 7 mi) NNE of Indio, CA
ML1.4 2006/04/21 10:16:40 33.459 -116.622 12.8 12 km ( 7 mi) SSE of Anza, CA
ML1.8 2006/04/21 09:44:55 37.316 -115.016 0.0 14 km ( 9 mi) ESE of Alamo, NV
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.5 2006/04/21 13:19:50 38.812 -122.805 4.3 2 km ( 1 mi) N of The Geysers, CA
ML2.5 2006/04/21 13:17:09 38.812 -122.809 4.2 2 km ( 1 mi) N of The Geysers, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.0 2006/04/21 17:44:12 34.235 -116.737 7.9 10 km ( 6 mi) ESE of Big Bear City, CA
ML2.1 2006/04/21 16:31:39 33.202 -115.595 6.2 5 km ( 3 mi) NE of Obsidian Butte, CA
ML1.4 2006/04/21 16:03:17 36.588 -121.125 7.6 6 km ( 4 mi) NNE of Pinnacles, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.5 2006/04/21 20:36:18 33.483 -116.417 11.0 24 km ( 15 mi) SSW of La Quinta, CA
ML1.5 2006/04/21 20:30:34 33.484 -116.410 7.7 24 km ( 15 mi) SSW of La Quinta, CA
ML1.7 2006/04/21 20:29:57 37.865 -121.829 12.8 10 km ( 6 mi) NE of Blackhawk, CA
ML1.9 2006/04/21 20:23:11 38.830 -122.794 2.5 4 km ( 2 mi) NNE of The Geysers, CA
ML2.0 2006/04/21 20:22:38 32.681 -115.848 6.7 15 km ( 10 mi) ESE of Ocotillo, CA
ML1.0 2006/04/21 20:11:05 35.871 -121.400 6.0 22 km ( 14 mi) SE of Lopez Point, CA
ML2.1 2006/04/21 20:06:58 34.157 -117.471 17.2 7 km ( 4 mi) N of Fontana, CA
Infrasonic Harmonic Activity which was detected
and inferred to be associated with building deep crustal stress
along the Pacific & North American Plate Boundary in Southern California.
ANSS Seismic Catalog: CA/NV/BAJA & Regions with Special Interest
MAG DATE UTC-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
ML1.9 2006/04/21 22:30:56 39.048 -123.125 5.6 10 km ( 6 mi) SSE of Talmage, CA
ML1.5 2006/04/21 22:29:18 37.476 -118.343 14.3 13 km ( 8 mi) NNE of Bishop, CA
ML1.7 2006/04/21 22:28:13 39.047 -123.125 5.4 10 km ( 6 mi) SSE of Talmage, CA
ML1.9 2006/04/21 22:18:39 36.045 -117.880 4.9 6 km ( 4 mi) E of Coso Junction, CA
ML1.8 2006/04/21 21:11:46 34.678 -116.293 3.2 13 km ( 8 mi) WSW of Ludlow, CA
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