Event 916046 Waveforms Moment Tensor Graphs
Summary:
Map includes seismicity in the last 60 days within 55 Km of this event.
Magnitude (ML)4.83
Region 20.6 mi N of Yerington
Date time 2026-04-22 at 17:23:37.085 UTC
2026-04-22 at 10:23:37.085 PDT
Location 39.2758 ; -119.0955
Depth 7.45 km
RMS 0.1935
Gap 058
Stations 38
Defining Phases 49
Associated Phases 69
Type Local
Status Reviewed
Page Updated 2026-04-22 at 10:39:52.674
REVIEWED BY NSL STAFF

Event ID:916046
Origin ID:2364940
Algorithm: Ichinose (2003) Long Period, Regional-Distance Waves
Seismic Moment Tensor Solution

2026/04/22 (112) 17:23:38.00 39.2758 -119.0955 001
	Depth =   3.0 (km)
	Mw    =  4.78
	Mo    =  1.83x10^23 (dyne x cm)

	Percent Double Couple = 100 %
	Percent CLVD          =   0 %
	no ISO calculated
	Epsilon=-0.00
	 Percent Variance Reduction =  92.26 %
	 Total Fit                  =  68.55 
	Major Double Couple
		            strike dip   rake
		Nodal Plane 1:  60  70   -3
		Nodal Plane 2: 151  87 -160

	DEVIATORIC MOMENT TENSOR

	Moment Tensor Elements: Spherical Coordinates
		Mrr= -0.07 Mtt= -1.45 Mff=  1.52
		Mrt= -0.40 Mrf=  0.51 Mtf=  0.86 EXP=23


	Moment Tensor Elements: Cartesian Coordinates
		-1.45 -0.86 -0.40
		-0.86  1.52 -0.51
		-0.40 -0.51 -0.07

	Eigenvalues:
		T-axis eigenvalue=  1.83
		N-axis eigenvalue=  0.00
		P-axis eigenvalue= -1.83

	Eigenvalues and eigenvectors of the Major Double Couple:
		T-axis ev= 1.83 trend=283 plunge=12
		N-axis ev= 0.00 trend=159 plunge=69
		P-axis ev=-1.83 trend=17 plunge=17

	Maximum Azmuithal Gap=96 Distance to Nearest Station= 59.2 (km)

	Number of Stations (D=Displacement/V=Velocity) Used=20 (defining only)
		
	 WASH.NN.D BMHS.NN.D BFC.NN.D WDEM.NN.D
	 TBRD.NN.D ZPR.NN.D MPK.NN.D CMK6.NN.D
	 MAV.NC.D CTC.NN.D KVN.NN.D EMBB.NN.D
	 RUB.NN.D BRH5.NN.D WVA.NN.D DIX.NN.D
	 FRDLA.WR.D NV31.IM.D YUBA.BK.D LHV.NN.D


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T ##################----------------########                
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All Stations defining and nondefining: 
Station.Net 	Def 	Distance 	Azi    	Bazi  	lo-f 	hi-f vmodel
            	    	(km)     	(deg)  	(deg) 	(Hz) 	(Hz)    
WASH.NN (D) 	Y 	    59.2  	276  	 96  	0.020 	0.100 WASH.NN.wus.glib
BMHS.NN (D) 	Y 	    59.3  	286  	105  	0.020 	0.100 BMHS.NN.wus.glib
BFC.NN (D) 	Y 	    61.7  	226  	 46  	0.020 	0.100 BFC.NN.wus.glib
WDEM.NN (D) 	Y 	    70.0  	299  	119  	0.020 	0.100 WDEM.NN.wus.glib
TBRD.NN (D) 	Y 	    72.8  	261  	 80  	0.020 	0.100 TBRD.NN.wus.glib
ZPR.NN (D) 	Y 	    78.5  	248  	 68  	0.020 	0.100 ZPR.NN.wus.glib
MPK.NN (D) 	Y 	    81.2  	271  	 91  	0.020 	0.100 MPK.NN.wus.glib
CMK6.NN (D) 	Y 	    84.0  	 87  	268  	0.020 	0.100 CMK6.NN.wus.glib
MAV.NC (D) 	Y 	    84.6  	206  	 26  	0.020 	0.100 MAV.NC.wus.glib
CTC.NN (D) 	Y 	    89.3  	266  	 85  	0.020 	0.100 CTC.NN.wus.glib
KVN.NN (D) 	Y 	    89.4  	106  	287  	0.020 	0.100 KVN.NN.wus.glib
EMBB.NN (D) 	Y 	    93.0  	249  	 68  	0.020 	0.100 EMBB.NN.wus.glib
RUB.NN (D) 	Y 	    94.2  	255  	 74  	0.020 	0.100 RUB.NN.wus.glib
BRH5.NN (D) 	Y 	    94.3  	105  	286  	0.020 	0.100 BRH5.NN.wus.glib
WVA.NN (D) 	Y 	    97.0  	320  	139  	0.020 	0.100 WVA.NN.wus.glib
DIX.NN (D) 	Y 	   104.7  	 56  	237  	0.020 	0.100 DIX.NN.wus.glib
FRDLA.WR (D) 	Y 	   115.9  	306  	126  	0.020 	0.100 FRDLA.WR.wus.glib
NV31.IM (D) 	Y 	   124.0  	139  	320  	0.020 	0.100 NV31.IM.wus.glib
YUBA.BK (D) 	Y 	   124.4  	274  	 93  	0.020 	0.100 YUBA.BK.wus.glib
LHV.NN (D) 	Y 	   125.1  	155  	336  	0.020 	0.100 LHV.NN.wus.glib

 (V)-velocity (D)-Displacement

Author: www-data
Date: 2026/04/22 18:00:57 UTC

Date: 2026/04/22 11:00:57 PDT

mtinv Version 3.0.6 Thu Jan 11 16:00:25 PST 2018

index

Source: Nevada Seismological Laboratory


Source: Nevada Seismological Laboratory


Source: Nevada Seismological Laboratory


Source: Nevada Seismological Laboratory


Source: Nevada Seismological Laboratory


Source: Nevada Seismological Laboratory


Source: Nevada Seismological Laboratory

Note: Graphs are auto-generated: not reviewed by NSL staff