Magnitude 2.5 Earthquake of Gold Bar, Washington 2014-09-03

2014-08-03 07:56:19 UTC :Gold Bar, Washington EARTHQUAKE

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Magnitude: 2.5

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-03 07:56:19 UTC

1. 2014-09-03 00:56:19 UTC-07:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

47.877°N 121.648°W

Depth : Depth of starting Rupture 

1.9km (1.2mi)

Region : Gold Bar, Washington

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

a) 4km (2mi) ENE of Gold Bar, Washington

b) 24km (15mi) E of Monroe, Washington

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

d) 35km (22mi) ENE of Cottage Lake, Washington

e) 132km (82mi) NE of Olympia, Washington

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	2.5 Md	± 0.20
Location	47.877°N, 121.649°W	± 0.3 km
Depth	1.9 km	± 0.6 km
Number of Phase Applied1	50
Minimum Distance2	18.0 km (0.16°)
Travel Time Residual3	0.22 sec
Azimuthal Gap4	47°

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)