20150513 06:02:26 (UTC) : WestNorthWest of Calipatria, California
earthquake monitor, California earthquake, earthquake realtime
Magnitude : 2.8
Event Time: Time and Date Starting of Earthquake Rupture
 20150513 06:02:26 (UTC)
Earthquake data:
Location : Position of Epicenter
33.169°N 115.642°W
Depth : Depth of starting Rupture
2.8 km
a) 13km (8mi) WNW of Calipatria, California
b) 14km (9mi) SW of Niland, California
c) 15km (9mi) N of Westmorland, California
d) 22km (14mi) SSE of Bombay Beach, California
e) 43km (27mi) N of El Centro, California
Location Uncertainty:
Parameter

Value

Uncertainty

Magnitude^{}

2.8 ml

± 0.1

Location^{}

33.169°N 115.642°W

± 6.1 km

Depth

2.8 km

± 31.6

Number of Phase Applied^{1}

46
 
Minimum Distance^{2}

2.40 km (0.02°)
 
Travel Time Residual^{3}

0.28 sec
 
Azimuthal Gap^{4}

30°

^{1}Number 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.
^{2}Minimum Distance:
Horizontal distance of nearest Station measured in Km from epicenter. The smaller the more accuracy in prediction of depth of EQ.
^{3}Travel 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.
^{4}Azimuthal 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)
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