Pacific Northwest Seismic Network

M3.7 earthquake - 16.03 mi SSW from Hyak, WA

Status: Reviewed
344 Felt ReportsReport your experience
Magnitude3.7Time2025/04/06 03:15:34 PM UTCDepth5.85 miCoordinates47.1717, -121.4863ID62080827

Origin

Statistics on estimate of an earthquake's location and time. For more info, see Earthquake Terminology.
Orid
3317328
Magnitude
3.69
Time
1743952561.4399986
Latitude
47.17167
Longitude
-121.48633
Depth
5.85 mi
Location Quality
Fair
Event ID
62080827
Event Type
eq
Gtype
l
Horizontal Uncertainty
0.11 mi
Depth Uncertainty
2.04 mi
Azimuthal Gap
28 deg
Number of Phases
262
RMS Misfit
0.31

Focal Mechanisms

Describes the fault orientation and slip direction of an earthquake and are generated using first motion (up or down) observations.

Solution 1

Focal mechanism solution for event

Number of P First motions: 102

Plane APlane BUncertainty
Strike6517313
Dip258143
Rake-20-11330

Discrepant Stations

Stations whose observed first-motion does not match the predicted first-motion from the focal mechanism.
StationNetworkChannelPolarityQuality
ELBECCBHZU0.9243
MARYUWENZD0.9243
LACKAUWHHZU0.9243
CINEUWHHZU0.9243
LCW2UWEHZU0.9243
ELKUWEHZU0.9243
UNFRCCBHZU0.9243
COWLUWHHZU0.9243
OHCUWENZD0.9243
BOISUWHHZU0.9243
EPH2UWHHZD0.9243

Solution 2

Focal mechanism solution for event

Number of P First motions: 102

Plane APlane BUncertainty
Strike35024213
Dip308038
Rake-160-6120

Discrepant Stations

Stations whose observed first-motion does not match the predicted first-motion from the focal mechanism.
StationNetworkChannelPolarityQuality
STYXCCBHZD0.9243
ELBECCBHZU0.9243
MARYUWENZD0.9243
CINEUWHHZU0.9243
LCW2UWEHZU0.9243
ELKUWEHZU0.9243
UNFRCCBHZU0.9243
COWLUWHHZU0.9243
OHCUWENZD0.9243
BOISUWHHZU0.9243
EPH2UWHHZD0.9243