20 km ESE of Silver Springs, Nevada

Magnitude5.5

Depth13.1 km

Time 2026-04-14T01:29:12.123000Z UTC: 2026-04-14T01:29:12.123000Z

USGS ID nn00914068

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Ground Shaking Intensities — Interpolated ShakeMap MMI

9 sites

Location	MMI	Description	Dist (km)	Dist (mi)
Silver Springs NV	V	Moderate	21	13
Yerington NV	V	Moderate	41	25
Stagecoach NV	IV	Light	32	20
Fallon NV	IV	Light	25	16
Sparks NV	IV	Light	68	42
Smith Valley NV	IV	Light	68	42
Dayton NV	IV	Light	52	32
Fernley NV	IV	Light	37	23
Sun Valley NV	IV	Light	72	45

Seismic Station Observed MMI

MMI values are derived directly from observed ground motion measurements at seismic stations and are not spatially interpolated.

3 stations

Station	Network	MMI	Description	Dist (km)	Dist (mi)
Pine Nut, Nevada w84 (NN.PNT)	NN	V	Moderate	58	36
Donner Summit, California (NN.DON)	NN	IV	Light	113	70
Yerington, Nevada w84gm (NN.YER)	NN	IV	Light	44	27

Engineering Ground Motion Parameters

GMPE predictions provide an independent check on the ShakeMap interpolated intensities above. ShakeMap relies on seismic station recordings; in areas with sparse station coverage — or for large teleseismic events and earthquakes outside dense West Coast networks — ShakeMap MMI can be inaccurate. A significant difference between ShakeMap and GMPE estimates is a signal that the ShakeMap result should be treated as preliminary. Also includes site Vs30 values and raw ground motion parameters (PGA/PGV).

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Site-Specific Vs30 Values

Shear-wave velocity in the upper 30 m, used for GMPE predictions.

Location	Default Vs30 (m/s)	Site-Specific Vs30 (m/s)	Source	Dist (km)	Dist (mi)
Silver Springs NV	760	760	—	21	13
Yerington NV	760	760	—	41	25
Stagecoach NV	760	760	—	32	20
Fallon NV	760	760	—	25	16
Sparks NV	760	760	—	68	42
Smith Valley NV	760	760	—	68	42
Dayton NV	760	760	—	52	32
Fernley NV	760	760	—	37	23
Sun Valley NV	760	760	—	72	45

MMI vs Distance — Default Vs30 (760 m/s)

All methods using the 760 m/s rock-site reference. ShakeMap values are independent of Vs30.

MMI vs Distance — Site-Specific Vs30

GMPEs use the site-specific Vs30 values shown in the table above. ShakeMap values are unchanged.

Peak Ground Motion Values — USGS ShakeMap

PGA and PGV interpolated from the USGS ShakeMap grid for this event. Values reflect ShakeMap's ground motion model, not GMPE estimates.

Location	PGA (%g)	PGV (cm/s)
Silver Springs NV	6.3365	4.941
Yerington NV	4.7132	3.530
Stagecoach NV	3.2395	2.736
Fallon NV	4.6924	2.515
Sparks NV	1.2553	1.963
Smith Valley NV	1.9852	1.538
Dayton NV	1.9064	1.555
Fernley NV	2.0374	1.408
Sun Valley NV	1.2796	1.746

Source: USGS ShakeMap (view ShakeMap). PGA in g (fraction of gravitational acceleration). PGV in cm/s.