Magnitude 4.5 Earthquake of Tres Picos, Mexico 2015-05-13

2015-05-13 17:56:04 (UTC) : South-SouthWest of Tres Picos, Mexico

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Magnitude : 4.5

Event Time: Time and Date Starting of Earthquake Rupture 

• 2015-05-13 17:56:04 (UTC)

Earthquake data:

Location : Position of Epicenter 

14.690°N 94.164°W

Depth : Depth of starting Rupture 

28.6 km

Region : Tres Picos, Mexico

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

a) 146km (91mi) SSW of Tres Picos, Mexico

b) 150km (93mi) SW of Pijijiapan, Mexico

c) 158km (98mi) WSW of Mapastepec, Mexico

d) 160km (99mi) SSW of Tonala, Mexico

e) 393km (244mi) W of Guatemala City, Guatemala

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.5 mb	± 0.0
Location	14.690°N 94.164°W	± 4.8 km
Depth	28.6 km	± 6.4
Number of Phase Applied1	163
Minimum Distance2	279.86 km (2.51°)
Travel Time Residual3	1.32 sec
Azimuthal Gap4	189°

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)

Magnitude 5.6 Earthquake of Tres Picos, Mexico 2015-05-10

2015-05-10 00:50:18 (UTC) :South-SouthWest of Tres Picos, Mexico

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Magnitude : 5.6

Event Time: Time and Date Starting of Earthquake Rupture 

• 2015-05-10 00:50:18 (UTC)

Earthquake data:

Location : Position of Epicenter 

14.866°N 93.990°W

Depth : Depth of starting Rupture 

6.7 km

Region : Tres Picos, Mexico

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

a) 121km (75mi) SSW of Tres Picos, Mexico

b) 123km (76mi) SW of Pijijiapan, Mexico

c) 132km (82mi) WSW of Mapastepec, Mexico

d) 137km (85mi) S of Tonala, Mexico

e) 375km (233mi) W of Guatemala City, Guatemala

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	5.6 mb	± 0.0
Location	14.866°N 93.990°W	± 7.4 km
Depth	6.7 km	± 4.4
Number of Phase Applied1	116
Minimum Distance2	250.13 km (2.25°)
Travel Time Residual3	1.10 sec
Azimuthal Gap4	91°

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)

Magnitude 4.4 Earthquake of Chicomuselo, Mexico 2015-05-04

2015-05-04 11:56:42 (UTC) :North-NorthWest of Chicomuselo, Mexico

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Magnitude : 3.7

Event Time: Time and Date Starting of Earthquake Rupture 

• 2015-05-04 11:56:42 (UTC)

Earthquake data:

Location : Position of Epicenter 

15.942°N 92.332°W

Depth : Depth of starting Rupture 

226.3 km

Region : Chicomuselo, Mexico

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

a) 20km (12mi) NNW of Chicomuselo, Mexico

b) 38km (24mi) NNW of Frontera Comalapa, Mexico

c) 40km (25mi) SSW of Comitan de Dominguez, Mexico

d) 50km (31mi) SSE of Venustiano Carranza, Mexico

e) 242km (150mi) NW of Guatemala City, Guatemala

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.4 mb	± 0.0
Location	15.942°N 92.332°W	± 7.6 km
Depth	226.3 km	± 7.6
Number of Phase Applied1	213
Minimum Distance2	42.97 km (0.39°)
Travel Time Residual3	0.84 sec
Azimuthal Gap4	130°

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)

Magnitude 4.5 Earthquake of San Vicente Coatlan, Mexico 2015-04-23

2015-04-23 04:25:02 (UTC) :South-SouthWest of San Vicente Coatlan, Mexico

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Magnitude : 4.5

Event Time: Time and Date Starting of Earthquake Rupture 

• 2015-04-23 04:25:02 (UTC)

Earthquake data:

Location : Position of Epicenter 

16.170°N 96.894°W

Depth : Depth of starting Rupture 

48.4 km

Region : San Vicente Coatlan, Mexico

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

a) 24km (15mi) SSW of San Vicente Coatlan, Mexico

b) 36km (22mi) WSW of Miahuatlan de Porfirio Diaz, Mexico

c) 39km (24mi) NNE of Puerto Escondido, Mexico

d) 39km (24mi) NNE of Puerto Escondido, Mexico

e) 431km (268mi) SSE of Mexico City, Mexico

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.5 mb	± 0.0
Location	16.170°N 96.894°W	± 9.9 km
Depth	48.4 km	± 10.1
Number of Phase Applied1	50
Minimum Distance2	235.66 km (2.12°)
Travel Time Residual3	1.17 sec
Azimuthal Gap4	193°

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)

Magnitude 4.4 Earthquake of Hidalgotitlan, Mexico 2015-04-06

2015-04-06 00:59:21 (UTC) :South-SouthEast of Hidalgotitlan, Mexico

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Magnitude : 4.4

Event Time: Time and Date Starting of Earthquake Rupture 

• 2015-04-06 00:59:21 (UTC)

Earthquake data:

Location : Position of Epicenter 

17.523°N 94.497°W

Depth : Depth of starting Rupture 

147.0 km

Region : Hidalgotitlan, Mexico

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

a) 32km (20mi) SSE of Hidalgotitlan, Mexico

b) 51km (32mi) S of Minatitlan, Mexico

c) 54km (34mi) SSE of Cosoleacaque, Mexico

d) 55km (34mi) SSE of Oteapan, Mexico

e) 532km (331mi) NW of Guatemala City, Guatemala

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.4 mb	± 0.0
Location	17.523°N 94.497°W	± 8.5 km
Depth	147.0 km	± 8.5
Number of Phase Applied1	146
Minimum Distance2	286.53 km (2.57°)
Travel Time Residual3	1.43 sec
Azimuthal Gap4	126°

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)