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II

Max Est. MMI

18 km SE of Silver Springs, Nevada

Magnitude3.6
Depth4.0 km
Time 2026-04-14T04:53:45.249000Z UTC: 2026-04-14T04:53:45.249000Z
USGS ID nn00914249
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Ground Shaking Intensities — Interpolated ShakeMap MMI

3 sites
Location MMI Description
Silver Springs
NV
Weak(II)
Stagecoach
NV
Weak(II)
Fallon
NV
Weak(II)

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 MMI Description
Yerington, Nevada w84gm (NN.YER) Not felt(I)
Pah Rah Range, Nevada w84gm (NN.PAH) Not felt(I)
Bishop Manogue Catholic High School, Reno, NV (NN.BMHS) Not felt(I)

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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Est. Vs30 Values

Estimated shear-wave velocity in the upper 30 m used in GMPE calculations. Ref. column shows the 760 m/s rock-site reference for comparison.

Location Ref. (760 m/s) Est. Vs30 (m/s)
Silver Springs
NV
760 322
Stagecoach
NV
760 370
Fallon
NV
760 201

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 — default Vs30

MMI vs Distance — Est. Vs30

GMPEs use the Est. Vs30 values shown in the table above. ShakeMap values are independent of Vs30.

MMI vs distance — Est. Vs30

GMPE Residual — Observed − Predicted MMI

Signed residual at each seismic station. Positive values mean the GMPE underestimated shaking; negative values mean it overestimated. The dashed line at zero indicates perfect agreement.

GMPE residual plot

GMPE Predicted vs. Observed MMI at Seismic Stations

Each point is one seismic station. Points on the dashed 1:1 line indicate perfect agreement; above the line = GMPE underestimated shaking; below = overestimated.

GMPE predicted vs observed scatter

GMPE Performance — Station Observations

Statistics computed by comparing each GMPE's predicted MMI against ShakeMap observed MMI at seismic stations. Bias = mean(observed − predicted). Lower RMSE indicates better overall agreement with instrumental measurements.

GMPE Bias Sigma RMSE
ASK14 +0.01 0.08 0.08
BSSA14 +0.01 0.08 0.08
CY14 +0.01 0.08 0.08
CB14 +0.01 0.08 0.08
Bias > 0: GMPE underestimated shaking at stations. Bias < 0: GMPE overestimated shaking.

Peak Ground Motion — Seismic Station Observations

Recorded PGA and PGV at seismic stations, sorted by highest PGA. Top 25 stations shown. MMI (PGA) and MMI (PGV) are independent conversions via Worden et al. (2012) GMICE.

Station PGA (g) MMI (PGA) PGV (cm/s) MMI (PGV)
Queen Bee, Mono County, California (NN.QNBC) 0.0012 Not felt(I) 0.016 Not felt(I)
Yerington, Nevada w84gm (NN.YER) 0.0012 Not felt(I) 0.034 Not felt(I)
Buffalo Canyon, Nevada w84gm (NN.BFC) 0.0008 Not felt(I) 0.025 Not felt(I)
Bishop Manogue Catholic High School, Reno, NV (NN.BMHS) 0.0004 Not felt(I) 0.014 Not felt(I)
Pah Rah Range, Nevada w84gm (NN.PAH) 0.0003 Not felt(I) 0.010 Not felt(I)
Bald Mtn, NV (NN.BALD) 0.0003 Not felt(I) 0.011 Not felt(I)
Weber Reservoir, near Camino (BK.WEBR) 0.0003 Not felt(I) 0.005 Not felt(I)
Lower Ebbet's Pass, California (NN.EBPB) 0.0003 Not felt(I) 0.008 Not felt(I)
Thunderbird Lodge, Lake Tahoe, NV (NN.TBRD) 0.0003 Not felt(I) 0.007 Not felt(I)
Winnemucca Valley, Nevada w84 (NN.WVA) 0.0003 Not felt(I) 0.013 Not felt(I)
Bunker Hill, Placer County, CA (NN.BUNK) 0.0003 Not felt(I) 0.005 Not felt(I)
Kaiserville, Nevada w84gm (NN.KVN) 0.0003 Not felt(I) 0.011 Not felt(I)
Loyalton, CA digital upgrade (NN.LOYB) 0.0003 Not felt(I) 0.007 Not felt(I)
Columbia College, Columbia, CA, USA (BK.CMB) 0.0002 Not felt(I) 0.004 Not felt(I)
Big Hill, ElDorado County, CA (NN.BIGH) 0.0002 Not felt(I) 0.004 Not felt(I)
Minden/Gardnerville Fire Stn RT130-ANSS w84gm (NN.MND1) 0.0002 Not felt(I) 0.006 Not felt(I)
Sage Hen site 5, Independence Lake, CA (NN.SAG5) 0.0002 Not felt(I) 0.006 Not felt(I)
Zephyr Cove, Lake Tahoe, Nevada (NN.ZPR) 0.0002 Not felt(I) 0.005 Not felt(I)
Rubicon Trail, California w84 (NN.RUB) 0.0002 Not felt(I) 0.005 Not felt(I)
Washoe County DEM, Nevada (NN.WDEM) 0.0002 Not felt(I) 0.008 Not felt(I)
Sierra Vista (NC.MSVB) 0.0002 Not felt(I) 0.005 Not felt(I)
Washoe Valley, Nevada;Laurence Kaplan Property (NN.WASH) 0.0002 Not felt(I) 0.005 Not felt(I)
Leek Springs, CA (NN.LEEK) 0.0002 Not felt(I) 0.003 Not felt(I)
Warrior Mine, Nye County, NV, USA (NN.WAR3) 0.0002 Not felt(I) 0.007 Not felt(I)
Weller Cave, Western Cave Conservancy, Sutter Creek, CA (BK.WELL) 0.0002 Not felt(I) 0.005 Not felt(I)
Source: USGS ShakeMap station recordings (view ShakeMap). PGA in g (fraction of gravitational acceleration); PGV in cm/s. The observed MMI shown on the map uses ShakeMap's reported instrumental intensity where available, or max(MMI from PGA, MMI from PGV) otherwise.