The Global Sequence is designed to inform the viewer of earthquakes which effect the world. Using a Magnitude M5 cutoff, these earthquakes are tracked from week to week, and provide the viewer with a reference that significant earthquakes happen on a regular basis. Showing the global earthquake activity in the sequence is important because it increases the viewers attention that we live on an active planet and no matter where you live or travel, you should be conscience of possible earthquake hazards.

Global Epicenter Map
Global Activity Trend
 Global Seismic Notes

Regional Report Sequence

The Western Great Basin is a seismically active region away from the tectonic plate margins of the San Andreas fault. On an average, it produces between 10-20 M1+ earthquakes each week and, including the Central Nevada region and the Owens Valley, has been the site of 45 M6+ earthquakes in the past, including 6 in the M7+ range since 1845 the largest being the Pleasant Valley M7.8 earthquake, 1915. It is important to understand the Western Great Basin is tectonically active region and if you live or travel through the region, you must be prepared to act if there is a significantly large earthquake.

The Regional Sequence shows the weekly earthquake activity the Western Basin and Range. While the activity is much less dramatic than that of the global scale, is shows viewers that the region is seismically active and can be the site of a powerful earthquake in the future. It makes people aware they in deed live in earthquake country and there is a need to think about what they could do before, during, and after a major earthquake.

Regional Epicenter Map
Regional Activity Trend
Regional Seismic Notes

Mammoth Lakes Report Sequence

The Mammoth Lakes region is located within the area covered by the Western Great Basin. The town of Mammoth Lakes sits within the Long Valley caldera, an active volcano. Including the Inyo Craters to the north, this region has been volcanically active within the last 450 years and could see a resurgence of volcanic activity at any time. In the early 1980's, the Mammoth Lakes region was rocked by a series of M6+ temblors which gained widespread public attention. Since that time, the region has undergone a number of earthquake swarms some of which have been quite strong and consisted of thousands of events in a short period of time, however, few have registered M4 or stronger and none have been in the M6+ range.

The Mammoth Lakes Sequence presents the detailed seismicity of this region thus allowing the viewers the opportunity to see and understand how a locally active region behaves. Once again, it shows people that the region is dynamic and just because you haven't felt an earthquake in some time does not mean they do not occur. The question is no longer if an earthquake will occur, but when and which areas will be effected.

Mammoth Lakes Epicenter Map
Mammoth Lakes Trend
Mammoth Lakes Seismic Notes

Special Report Sequence

The Western Great Basin is a vast area with population concentrated in specific areas. When significant earthquakes happen in the area, they often go without attention by established media sources. Yet people are interested when and where these events have occurred.

When significant earthquakes occur in the Western Great Basin, we prepare Special Reports to show viewers the effected region. These are added into the sequence and have been quite popular.

Special Regional Report

Introduction Sequence
Report Sequence
Preparedness Sequence
Conclusion Sequence

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Seismo-Watch, Inc.
P.O. Box 1956 , Chester, CA 96020
Office: 530-258-4228 / Fax: 530-258-4339


Seismo-Watch Earthquake Report

Sierra Nevada Community Access Television

Introduction Sequence
Report Sequence
Preparedness Sequence
Conclusion Sequence

The Report Sequence of the Seismo-Watch Earthquake Report on SNCAT Television is composed of three sequences, Global, Regional, and the Mammoth Lakes Region. Each segment contains an epicenter map, an activity trend graph, and a brief description of the weekly activity. Special Reports highlight significant regional activity.

Global Report Sequence