Magnitude 4.2 Earthquake of Guthrie, Oklahoma 2014-08-19

2014-08-19 12:41:35 UTC :Guthrie, Oklahoma EARTHQUAKE

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Magnitude: 4.2

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-19 12:41:35 UTC

1. 2014-08-19 07:41:35 UTC-05:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

35.819°N 97.472°W

Depth : Depth of starting Rupture 

3.5km (2.1mi)

Region : Guthrie, Oklahoma

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

a)  7km (4mi) SSW of Guthrie, Oklahoma

b)  18km (11mi) N of Edmond, Oklahoma

c)  35km (22mi) NNE of Warr Acres, Oklahoma

d)  36km (22mi) NNE of Bethany, Oklahoma

e)  39km (24mi) N of Oklahoma City, Oklahoma

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.2 mb	± 0.08
Location	35.819°N, 97.472°W	--
Depth	3.5 km	± 5.7 km
Number of Phase Applied1	127
Minimum Distance2	2.8 km (0.03°)
Travel Time Residual3	0.69 sec
Azimuthal Gap4	29°

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)