Magnitude 3.0 Earthquake of Willow, Alaska 2014-08-06

2014-08-06 06:39:59 UTC  : Willow, Alaska EARTHQUAKE

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Magnitude: 3.0

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-06 06:39:59 UTC

1. 2014-08-05 22:39:59 UTC-08:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

61.981°N 151.093°W

Depth : Depth of starting Rupture 

63.5km (39.5mi)

Region : Willow, Alaska 

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

 a) 61km (38mi) WNW of Willow, Alaska

 b)   94km (58mi) NW of Knik-Fairview, Alaska

 c)  105km (65mi) NW of Anchorage, Alaska 

 d) 360km (224mi) SSW of Fairbanks, Alaska

1.  e) 867km (539mi) WNW of Whitehorse, Canada    

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.0 ml	--
Location	61.981°N, 151.093°W	± 0.3 km
Depth	63.5 km	± 0.7 km
Number of Phase Applied1	73
Minimum Distance2	--
Travel Time Residual3	0.64 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)