S. California: San Andreas Fault "To Pop" Next at Cajon Pass!  

Date:June 16, 2005 at 23:41:07 From:Frank Condon,  Subject:Preliminary Analysis: M4.9

Hello all: I'm still putting together a report to be released before morning, which has all of the latest anomalies observed before and after the M4.9 Yucaipa Earthquake. However, I felt it important to share with you that the micro quake listed NNW of Devore at Blue Cut (23 km Depth) is adjacent to the San Andreas fault and appears to be associated with the most Eastern(Glen Helen)Branch of the Northern San Jacinto fault zone at the pressure ridge (Lytle Creek) between the San Andreas fault and the San Jacinto fault zone. It's also very close to the shear zone at Blue Cut. A high frequency ULF burst was detected within a short period of time after the micro quake NNW of Devore, CA epicentered in the Cajon Pass. We now have direct nucleation of stress at the Cajon Pass, which is a stone's throw away from the "Big Dog." (San Andreas)  In consideration all of the previous unclamping that has already taken place, for almost an entire year now (July 2004). I felt it necessary to upgrade the seismic alert to a Mojave Desert and Inland Empire Seismic (short term) WARNING. You can expect this to last through the next Full Moon and Perigee 32 hours later, when extremely high spring tides occur along the coast on June 23, 2005. Please take all necessary precautions and secure your food and water sources in the event of a major disaster. Frank Condon

  

MT ULF UPDATE: June 16, 2005

Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect. There was moderate infrasonic harmonic resonant activity below 2 Hz on Thursday. The Peak (Crustal) Infrasonic Harmonic Resonant Frequency was measured at 1.42 Hz (-71.53 dBv). The ULF and MT activity level was low to moderate during the past 24 hours. The inferred mean average unclamping level was lower. The MT mean average was measured at 8.4 units. The MT Peak Reading was 8.9 Units of regional lithospheric stress.

M4.9 2005/06/16 20:53:26 34.058 -117.011 11.8 5 km ( 3 mi) NE of Yucaipa, CA
M3.7 2005/06/16 20:54:19 34.053 -117.023 16.8 3 km ( 2 mi) NE of Yucaipa, CA
M3.5 2005/06/16 20:54:49 34.054 -117.005 15.1 5 km ( 3 mi) ENE of Yucaipa, CA
M3.4 2005/06/17 03:24:28 33.491 -116.531 10.9 15 km ( 9 mi) ESE of Anza, CA

All daily charts were updated to reflect the latest analysis.
 

General Discussion:
On Thursday, There was a period with ULF Suppression. There was a moderate strength infrasonic harmonics (0.15 Hz, 0.94 Hz, and in a band from 1.16 to 1.60 Hz). There was an afternoon period with intense infrasonic activity associated with a moderate magnitude earthquake epicentered at Yucaipa, in Southern California. Several related infrasonic pulsations was observed. I'm also keeping an eye on the increase in seismic activity to the north of the Mojave Desert Block at Ridgecrest, CA. A special report is now in the works regarding this incident.
 

 

Statement Summary:
It's inferred that the strong infrasonic resonant frequencies are related to a general rise in deep crustal stress along the Pacific & North American Plate Boundary in Baja, and Southern California. The current infrasonic harmonics are associated with high crustal stress along the San Andreas fault zone( Mojave Desert Block) from Southern to Central California, that may also affect the Southern Owens Valley as it nucleates north, and west along the Garlock fault zone towards the Central California Coastal region near San Simeon, CA (Pine Mountain-Big Pine faults). Also, appears to be affecting crustal stress levels as far north as San Francisco Bay, and most recently within Central California near Avenal and Parkfield, CA. The latest observations are indicating that crustal stress is also high in Northern Baja, Californa, Mexico. We may now potentially be within 3 weeks of the next strong seismic event epicentered in the Southern California region. There is a greater propensity for an event of this magnitude during an upcoming extremely low transit of the Full Moon, where it won't even become visible above the horizon at Fairbanks, Alaska. The low path of the Full Moon is also going to give us some unusually high spring tides at mid-latitudes during Perigee. So, that could be the catalyst for triggering an area which is known to be overdue for having its next major earthquake. Note: Perigee arrives 32 hours after the next Full Moon, which is on June 21st. The area from South-Central to Southern California should remain on alert for a chance that another severe geomagnetic disturbance could trigger yet another moderate to strong seismic event.
 
 

Maranatha!
Deborah
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