Magnitude 2.5 Earthquake of Big Bear Lake, California 2014-07-23

2014-07-23 12:50:50 UTC :Big Bear Lake, California EARTHQUAKE

earthquake monitor,California earthquake, earthquake realtime

Magnitude: 2.5

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-07-23 12:50:50 UTC
2. 
   

1. 2014-07-23 05:50:50 UTC-07:00 at epicenter

1. 
   

Earthquake data:

Location : Position of Epicenter 

34.274°N 117.016°W

Depth : Depth of starting Rupture 

7.4km (4.6mi)

Region : Big Bear Lake, California

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

a)  10km (6mi) WNW of Big Bear Lake, California

b)  15km (9mi) W of Big Bear City, California

c)  16km (10mi) E of Lake Arrowhead, California

d)  24km (15mi) NE of Highland, California

e)  466km (290mi) WNW of Phoenix, Arizona

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	2.5 ml	± 0.16
Location	34.274°N, 117.016°W	--
Depth	7.4 km	± 0.6 km
Number of Phase Applied1	125
Minimum Distance2	2.1 km (0.02°)
Travel Time Residual3	0.25 sec
Azimuthal Gap4	41°

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)