Magnitude 2.7 Earthquake of McGrath, Alaska 2014-07-24

2014-07-24 11:20:38 UTC  : McGrath, Alaska EARTHQUAKE

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Magnitude: 2.7

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-07-24 11:20:38 UTC

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1. 2014-07-24 03:20:38 UTC-08:00 at epicenter

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Earthquake data:

Location : Position of Epicenter 

63.189°N 152.864°W

Depth : Depth of starting Rupture 

1.4km (0.9mi)

Region : McGrath, Alaska

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

a) 140km (87mi) ENE of McGrath, Alaska

b)    251km (156mi) NW of Knik-Fairview, Alaska

c)  268km (167mi) NNW of Anchorage, Alaska

d)   309km (192mi) SW of College, Alaska

1. e) 970km (603mi) WNW of Whitehorse, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	2.7 ml	--
Location	63.189°N, 152.864°W	± 0.3 km
Depth	1.4 km	± 0.3 km
Number of Phase Applied1	27
Minimum Distance2	--
Travel Time Residual3	0.8 sec
Azimuthal Gap4	--

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)