Pacific Northwest Seismic Network

M1.8 earthquake - 6.71 mi NE from Tacoma, WA

Status: Reviewed
Magnitude1.8Time2025/04/17 01:09:31 AM UTCDepth15.11 miCoordinates47.3133, -122.3445ID62093121

Origin

Statistics on estimate of an earthquake's location and time. For more info, see Earthquake Terminology.
Orid
3319513
Magnitude
1.78
Time
1744852198.3599987
Latitude
47.31333
Longitude
-122.34450
Depth
15.11 mi
Location Quality
Excellent
Event ID
62093121
Event Type
eq
Gtype
l
Horizontal Uncertainty
0.14 mi
Depth Uncertainty
0.22 mi
Azimuthal Gap
32 deg
Number of Phases
97
RMS Misfit
0.18

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: 34

Plane APlane BUncertainty
Strike9526053
Dip454528
Rake1008040

Discrepant Stations

Stations whose observed first-motion does not match the predicted first-motion from the focal mechanism.
StationNetworkChannelPolarityQuality
RAWUWENZD0.9243