Magnitude 3.1 Earthquake of West Yellowstone, Montana 2014-10-27

2014-10-27 10:35:21 UTC :West Yellowstone, Montana EARTHQUAKE

earthquake monitor,Montana earthquake, earthquake realtime

Magnitude : 3.1

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-10-27 10:35:21 UTC
2. 2014-10-27 04:35:21 UTC-06:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

44.819°N 111.503°

Depth : Depth of starting Rupture 

9.8km (6.1mi)

Region : West Yellowstone, Montana

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

a)  36km (22mi) WNW of West Yellowstone, Montana

b)  102km (63mi) SSW of Bozeman, Montana

c)  112km (70mi) NNE of Rexburg, Idaho

d)  154km (96mi) SSE of Butte, Montana

1. 
   

e)  201km (125mi) SSE of Helena, Montana

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.1 mc	± 0.50
Location	44.819°N, 111.503°W	± 0.2 km
Depth	9.8 km	± 0.3 km
Number of Phase Applied1	68
Minimum Distance2	5.9 km (0.05°)
Travel Time Residual3	0.15 sec
Azimuthal Gap4	40°

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)