Magnitude 3.9 NORTHERN CALIFORNIA
Friday, July 20, 2007 at 17:50:20 UTC
Preliminary Earthquake Report
| Magnitude | 3.9 |
|---|---|
| Date-Time |
Time of Earthquake in other Time Zones |
| Location | 38.80N 122.80W |
| Depth | 1 kilometers |
| Region | NORTHERN CALIFORNIA |
| Distances |
25 km (15 miles) SW of Clearlake, California 40 km (25 miles) N of Santa Rosa, California 50 km (30 miles) SE of Ukiah, California 115 km (75 miles) WNW of SACRAMENTO, California |
| Location Uncertainty | Error estimate not available, held by USGS NEIC to another agency's solution |
| Parameters | not available |
| Source | Northern California Seismic Network, UC Berkeley & USGS Menlo Park, USA |
| Remarks | Felt at Cloverdale, Eureka, Healdsburg, Kelseyville, Middletown, Saint Helena and The Sea Ranch. |
| Event ID | usfabh |
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Location Maps
Did You Feel It?
Theoretical P-Wave Travel Times
Earthquake Information for California
San Francisco Regional Earthquake Map
Earthquakes: Frequently Asked Questions
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USGS National Seismic Hazard Mapping Project
NB:
The official magnitude for this earthquake is indicated at the top of this page.
This was the best available estimate of the earthquake's size,
at the time that this page was created. Other magnitudes associated
with web pages linked from here are those determined at various times
following the earthquake with different types of seismic data.
Although, given the data used, they are legitimate estimates of magnitude
they are not considered the official magnitude.
The region name is an automatically generated name
from the Flinn-Engdahl (F-E) seismic and geographical regionalization scheme.
The boundaries of
these regions are defined at one-degree intervals and therefore differ from
irregular political boundaries.
More->
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
