Magnitude 3.4 Earthquake of Vieques, Puerto Rico 2014-09-22

2014-09-22 02:16:10  UTC : Vieques, Puerto Rico EARTHQUAKE

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Magnitude : 3.4

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-22 02:16:10 UTC
2.  

1. 2014-09-21 22:16:10 UTC-04:00 at epicenter
2. 
   

Earthquake data:

Location : Position of Epicenter 

1. 19.659°N 65.590°W

Depth : Depth of starting Rupture 

43.0km (26.7mi)

Region :Vieques, Puerto Rico

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

a)  138km (86mi) N of Vieques, Puerto Rico

b)    142km (88mi) NNE of San Juan, Puerto Rico

c)  143km (89mi) N of Rio Grande, Puerto Rico

1. 
   

d)  145km (90mi) NNE of Catano, Puerto Rico

1. e)  146km (91mi) NNE of Carolina, Puerto Rico

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.4 Md	± 0.00
Location	19.659°N, 65.590°W	± 3.2 km
Depth	43.0 km	± 19.3 km
Number of Phase Applied1	20
Minimum Distance2	156.1 km (1.40°)
Travel Time Residual3	0.37 sec
Azimuthal Gap4	288°

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 2.8 Earthquake of Vieques, Puerto Rico 2014-09-21

2014-09-21 00:03:25 UTC : Vieques, Puerto Rico EARTHQUAKE

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Magnitude : 2.8

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-21 00:03:25 UTC
2.  

1. 2014-09-20 20:03:25 UTC-04:00 at epicenter
2. 
   

Earthquake data:

Location : Position of Epicenter 

1. 19.070°N 65.524°W

Depth : Depth of starting Rupture 

45.0km (28.0mi)

Region :Vieques, Puerto Rico

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

a)  78km (48mi) NNE of Vieques, Puerto Rico

b)    82km (51mi) NNE of Rio Grande, Puerto Rico

c)  83km (52mi) N of Fajardo, Puerto Rico

1. 
   

d)  88km (55mi) NNE of Carolina, Puerto Rico

1. e)  90km (56mi) NE of San Juan, Puerto Rico

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	2.8 Md	± 0.00
Location	119.070°N, 65.524°W	± 4.6 km
Depth	45.0 km	± 13.0 km
Number of Phase Applied1	8
Minimum Distance2	88.0 km (0.79°)
Travel Time Residual3	0.28 sec
Azimuthal Gap4	320°

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 3.3 Earthquake of Vieques, Puerto Rico 2014-09-17

2014-09-18 05:43:37 UTC : Vieques, Puerto Rico EARTHQUAKE

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Magnitude : 3.3

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-18 05:43:37 UTC
2.  

1. 2014-09-18 01:43:37 UTC-04:00 at epicenter
2. 
   

Earthquake data:

Location : Position of Epicenter 

1. 19.715°N 65.622°W

Depth : Depth of starting Rupture 

40.0km (24.9mi)

Region :Vieques, Puerto Rico

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

a) 144km (89mi) N of Vieques, Puerto Rico

b)  147km (91mi) NNE of San Juan, Puerto Rico

c)  149km (93mi) N of Rio Grande, Puerto Rico

1. 
   

d)  150km (93mi) NNE of Catano, Puerto Rico

1. e)  151km (94mi) NNE of Carolina, Puerto Rico

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.3 Md	± 0.00
Location	19.715°N, 65.622°W	± 3.7 km
Depth	40.0 km	± 25.3 km
Number of Phase Applied1	8
Minimum Distance2	159.8 km (1.44°)
Travel Time Residual3	0.31 sec
Azimuthal Gap4	324°

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 3.3 Earthquake of Vieques, Puerto Rico 2014-09-17

2014-09-17 14:04:07 UTC : Vieques, Puerto Rico EARTHQUAKE

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Magnitude : 3.3

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-17 14:04:07 UTC
2.  

2014-09-17 10:04:07 UTC-04:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

1. 19.444°N 65.388°W

Depth : Depth of starting Rupture 

111.0km (69.0mi)

Region :Vieques, Puerto Rico

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

a) 122km (76mi) NNE of Vieques, Puerto Rico

b)   126km (78mi) NNE of Fajardo, Puerto Rico

c)  126km (78mi) NNE of Rio Grande, Puerto Rico

1. 
   

d)  131km (81mi) NE of San Juan, Puerto Rico

1. e)  131km (81mi) NNW of Charlotte Amalie, U.S. Virgin Islands

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.3 Md	± 0.00
Location	19.444°N, 65.388°W	± 4.4 km
Depth	111.0 km	± 6.6 km
Number of Phase Applied1	7
Minimum Distance2	126.1 km (1.13°)
Travel Time Residual3	0.12 sec
Azimuthal Gap4	302°

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 3.0 Earthquake of Fajardo, Puerto Rico 2014-09-16

2014-09-16 20:58:50 UTC : Fajardo, Puerto Rico EARTHQUAKE

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Magnitude : 3.0

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-16 20:58:50 UTC

1. 2014-09-16 16:58:50 UTC-04:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

1. 18.369°N 65.640°W

Depth : Depth of starting Rupture 

108.0km (67.1mi)

Region : Fajardo, Puerto Rico

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

a)  5km (3mi) NNE of Fajardo, Puerto Rico

b)   20km (12mi) E of Rio Grande, Puerto Rico

c)  31km (19mi) NE of Humacao, Puerto Rico

1. 
   

d)  33km (21mi) E of Carolina, Puerto Rico

1. e)  50km (31mi) ESE of San Juan, Puerto Rico

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.0 Md	± 0.00
Location	18.369°N, 65.640°W	± 2.0 km
Depth	108.0 km	± 1.0 km
Number of Phase Applied1	23
Minimum Distance2	25.3 km (0.23°)
Travel Time Residual3	0.23 sec
Azimuthal Gap4	173°

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 3.0 Earthquake of Brenas, Puerto Rico 2014-09-16

2014-09-16 21:37:56 UTC : Brenas, Puerto Rico EARTHQUAKE

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Magnitude : 3.0

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-16 21:37:56 UTC

1. 2014-09-16 17:37:56 UTC-04:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

1. 19.113°N 66.418°W

Depth : Depth of starting Rupture 

38.0km (23.6mi)

Region :Brenas, Puerto Rico

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

a)  71km (44mi) N of Brenas, Puerto Rico

b)   74km (46mi) N of Vega Baja, Puerto Rico

c)  74km (46mi) N of Barceloneta, Puerto Rico

1. 
   

d)  74km (46mi) NNW of Dorado, Puerto Rico

1. e)  78km (48mi) NNW of San Juan, Puerto Rico

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.0 Md	± 0.00
Location	19.114°N, 66.418°W	± 1.4 km
Depth	38.0 km	± 6.3 km
Number of Phase Applied1	26
Minimum Distance2	71.4 km (0.64°)
Travel Time Residual3	0.28 sec
Azimuthal Gap4	270°

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)