20130820 02:49:52 UTC : Calipatria, California USA EARTHQUAKE
earthquake monitor,California earthquake, earthquake realtime
Magnitude: 3.0
Event Time: Time and Date Starting of Earthquake Rupture
 20130820 02:49:52 UTC
 20130819 19:49:52 UTC07:00 at epicenter
Earthquake data:
Location : Position of Epicenter
33.114°N 115.580°W
33.114°N 115.580°W
Depth : Depth of starting Rupture
8.8km (5.5mi)
Region : Calipatria, California
Directions and Distances :Directions and Distances from Geographical Reference in Close Proximity Which can be effected by Location Uncertainty
8.8km (5.5mi)
a) 6km (4mi) WSW of Calipatria, California
b) 15km (9mi) NNW of Brawley, California
c) 29km (18mi) N of Imperial, California
d) 35km (22mi) N of El Centro, California
e) 328km (204mi) W of Phoenix, Arizona
d) 35km (22mi) N of El Centro, California
e) 328km (204mi) W of Phoenix, Arizona
Location Uncertainty:
Parameter

Value

Uncertainty

Magnitude^{}

3.0 Ml

± 0.20

Location^{}

33.114°N, 115.580°W

± 0.3 km

Depth

8.8 km

± 0.4 km

Number of Phase Applied^{1}

70


Minimum Distance^{2}

3.0 km (0.03°)


Travel Time Residual^{3}

0.31 sec


Azimuthal Gap^{4}

47°

^{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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