Magnitude 2.8 Earthquake of American Canyon, California 2014-08-26

2014-08-26 13:12:19 UTC :American Canyon, California EARTHQUAKE

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Magnitude: 2.8

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-26 13:12:19 UTC
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1. 2014-08-26 06:12:19 UTC-07:00 at epicenter

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Earthquake data:

Location : Position of Epicenter 

1. 38.178°N 122.313°W

Depth : Depth of starting Rupture 

6.6km (4.1mi)

Region : American Canyon, California

Directions and Distances :Directions and Distances from Geographical Reference in Close Proximity Which can be effected by Location Uncertainty

a)  4km (2mi) W of American Canyon, California

b)  9km (6mi) NNW of Vallejo, California

c)  13km (8mi) S of Napa, California

d)  17km (11mi) N of Hercules, California

e)  84km (52mi) WSW of Sacramento, California

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	2.8 Md	± 0.10
Location	38.178°N, 122.313°W	± 0.3 km
Depth	6.6 km	± 0.7 km
Number of Phase Applied1	70
Minimum Distance2	6.0 km (0.05°)
Travel Time Residual3	0.31 sec
Azimuthal Gap4	68°

¹Number of phase Applied: 

In determining location of hypocenter, applied number of observations on P waves and S waves. The greater the more accurate prediction of EQ.

²Minimum Distance:

 Horizontal distance of nearest Station measured in Km from epicenter. The smaller the more accuracy in prediction of depth of EQ.

³Travel Time Residual:

 A way of measurement of fit of arrival time observed to arrival time predicted for particular location. The smaller the better fit of data.

⁴Azimuthal Gap: 

Expressed in degree; the smaller the smaller the error in horizontal positioning of EQ. Large uncertainty is considered when exceeds 180° (both depth and location)