Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 17-03-2021 and time 16:15:54 (UTC) in region 4 km SW Fiastra (MC)

A magnitude ML 1.4 earthquake occured in region: 4 km SW Fiastra (MC), on

  • 17-03-2021 16:15:54 (UTC)
  • 17-03-2021 17:15:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0100, 13.1250 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Fiastra MC 4 559 559
Fiordimonte MC 4 202 761
Acquacanina MC 5 121 882
Pievebovigliana MC 7 866 1748
Pieve Torina MC 7 1458 3206
Ussita MC 7 444 3650
Bolognola MC 9 142 3792
Visso MC 9 1107 4899
Monte Cavallo MC 10 145 5044
Muccia MC 10 915 5959
Castelsantangelo sul Nera MC 13 281 6240
Sarnano MC 15 3264 9504
Camerino MC 15 6974 16478
Cessapalombo MC 16 512 16990
Serravalle di Chienti MC 16 1070 18060
Preci PG 16 724 18784
Caldarola MC 17 1823 20607
Camporotondo di Fiastrone MC 18 563 21170
Gualdo MC 19 815 21985
Montefortino FM 19 1178 23163
Amandola FM 19 3629 26792
San Ginesio MC 19 3498 30290
Serrapetrona MC 19 966 31256
Belforte del Chienti MC 20 1886 33142

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
61 Km E of Perugia (166134 inhabitants)
61 Km NW of Teramo (54892 inhabitants)
63 Km NE of Terni (111501 inhabitants)
75 Km SW of Ancona (100861 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 inhabitants)
100 Km NW of Montesilvano (53738 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.4 2021-03-17
16:15:54		 43.0102 13.1253 10 2021-03-17
16:24:07		 Sala Sismica INGV-Roma 88220441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-17 16:15:54 ± 0.05
Latitude 43.0102 ± 0.0027
Longitude 13.1253 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 88220441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 299
Semi-minor axis of confidence ellipse (meter) 208
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 18
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 43
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.52251
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 88220441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-17 16:24:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2021-03-17T16:16:12.76 0.3 undecidable manual S 138 57.9975 50 0.26 65
IV.SMA1.EHZ. 2021-03-17T16:16:09.01 0.3 undecidable manual S 158 45.4212 50 -0.14 70
IV.GAVE.EHZ. 2021-03-17T16:16:07.61 0.3 undecidable manual S 208 39.9267 50 -0.08 71
IV.MNTT.EHZ. 2021-03-17T16:16:07.10 3.0 undecidable manual S -0.05 0
IV.ASSB.HHZ. 2021-03-17T16:16:07.14 0.3 undecidable manual S 276 38.0286 50 -0.03 71
IV.EL6.EHZ. 2021-03-17T16:16:06.04 0.3 undecidable manual S 357 35.4423 50 -0.46 67
IV.TERO.HHZ. 2021-03-17T16:16:04.63 0.3 undecidable manual P 138 57.9975 50 -0.16 68
IV.MF5.EHZ. 2021-03-17T16:16:04.78 0.1 undecidable manual S 95 27.2505 109 0.51 87
IV.SMA1.EHZ. 2021-03-17T16:16:02.68 0.3 undecidable manual P 158 45.4212 50 -0.17 69
IV.MML1.EHE. 2021-03-17T16:16:01.13 0.3 undecidable manual S 313 16.9719 120 0.13 73
IV.NRCA.HHZ. 2021-03-17T16:16:01.45 0.1 undecidable manual S 183 19.5693 116 -0.37 91
IV.ASSB.HHZ. 2021-03-17T16:16:01.80 0.3 undecidable manual P 276 38.0286 50 0.09 70
IV.EL6.EHZ. 2021-03-17T16:16:01.07 0.1 undecidable manual P 357 35.4423 50 -0.25 92
IV.MMO1.EHZ. 2021-03-17T16:16:01.79 0.1 undecidable manual S 127 20.4684 115 -0.3 92
IV.GAVE.EHZ. 2021-03-17T16:16:01.97 0.3 undecidable manual P 208 39.9267 50 -0.04 72
IV.GUMA.HHE. 2021-03-17T16:16:01.67 0.1 undecidable manual S 71 17.9709 118 0.35 93
IV.CESI.HHZ. 2021-03-17T16:16:01.52 0.1 undecidable manual S 268 17.871 118 0.22 95
IV.MF5.EHZ. 2021-03-17T16:16:00.12 0.1 undecidable manual P 95 27.2505 109 0.09 96
IT.MTCL.HGN. 2021-03-17T16:15:59.20 0.1 undecidable manual S 260 10.3785 133 0.05 100
IV.CSP1.EHZ. 2021-03-17T16:15:59.15 0.1 undecidable manual S 35 11.1777 131 -0.2 96
IV.MC2.EHZ. 2021-03-17T16:15:59.67 0.1 undecidable manual S 155 12.0768 128 0.07 100
IV.GUMA.HHE. 2021-03-17T16:15:58.52 0.1 undecidable manual P 71 17.9709 118 0.19 96
IV.CESI.HHZ. 2021-03-17T16:15:58.48 0.1 undecidable manual P 268 17.871 118 0.17 96
IV.MML1.EHE. 2021-03-17T16:15:58.18 0.1 undecidable manual P 313 16.9719 120 0.04 99
IV.FEMA.HNN. 2021-03-17T16:15:58.79 0.1 undecidable manual S 229 8.0808 140 0.18 98
IV.NRCA.HHZ. 2021-03-17T16:15:58.53 0.1 undecidable manual P 183 19.5693 116 -0.08 97
IV.MMO1.EHZ. 2021-03-17T16:15:58.59 0.1 undecidable manual P 127 20.4684 115 -0.18 95
IV.MC2.EHZ. 2021-03-17T16:15:57.43 0.1 undecidable manual P 155 12.0768 128 0.09 99
IV.FDMO.HHZ. 2021-03-17T16:15:57.42 0.1 undecidable manual S 314 4.2957 156 -0.47 91
IT.MTCL.HGN. 2021-03-17T16:15:57.20 0.1 undecidable manual P 260 10.3785 133 0.12 98
IV.CSP1.EHZ. 2021-03-17T16:15:57.18 0.1 undecidable manual P 35 11.1777 131 -0.01 100
IV.FDMO.HHZ. 2021-03-17T16:15:56.29 0.1 undecidable manual P 314 4.2957 156 -0.06 100
IV.FEMA.HNN. 2021-03-17T16:15:56.99 0.1 undecidable manual P 229 8.0808 140 0.23 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.5 0.000588 0.16 AML other m 2021-03-17T16:15:57.46
IV.FDMO.HHN. ML:1.4 0.000441 0.12 AML other m 2021-03-17T16:15:57.74
IV.CSP1.EHE. ML:1.5 0.0004115 0.34 AML other m 2021-03-17T16:15:59.75
IV.CSP1.EHN. ML:1.6 0.000483 0.8 AML other m 2021-03-17T16:16:00.28
IV.NRCA.HHE. ML:1.6 0.00029099999999999997 0.88 AML other m 2021-03-17T16:16:01.22
IV.CESI.HHN. ML:1.3 0.0001725 0.2 AML other m 2021-03-17T16:16:01.82
IV.NRCA.HHN. ML:1.5 0.0002275 1.12 AML other m 2021-03-17T16:16:02.73
IV.CESI.HHE. ML:1.3 0.00016949999999999997 1.12 AML other m 2021-03-17T16:16:02.92
IV.ASSB.HHE. ML:1.1 0.00004485 0.58 AML other m 2021-03-17T16:16:07.44
IV.ASSB.HHN. ML:1.1 0.000048849999999999995 0.66 AML other m 2021-03-17T16:16:07.76
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download