Magnitude 2.6 Earthquake of Gold Bar, Washington 2014-09-04

2014-08-04 15:05:48 UTC :Gold Bar, Washington EARTHQUAKE

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Magnitude: 2.6

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-04 15:05:48 UTC

1. 2014-09-04 08:05:48 UTC-07:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

47.872°N 121.656°W

Depth : Depth of starting Rupture 

10.4km (6.5mi)

Region : Gold Bar, Washington

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

a) 3km (2mi) ENE of Gold Bar, Washington

b) 23km (14mi) E of Monroe, Washington

c) 34km (21mi) ESE of Lake Stevens, Washington

d) 34km (21mi) ENE of Cottage Lake, Washington

e) 131km (81mi) NE of Olympia, Washington

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	2.6 Ml	± 0.20
Location	47.872°N, 121.656°W	± 0.2 km
Depth	10.4 km	± 0.8 km
Number of Phase Applied1	35
Minimum Distance2	11.0 km (0.10°)
Travel Time Residual3	0.09 sec
Azimuthal Gap4	50°

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)