Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 27-03-2021 and time 17:28:12 (Italy) in region 4 km W Monte Cavallo (MC)

A magnitude ML 1.8 earthquake occured in region: 4 km W Monte Cavallo (MC), on

  • 27-03-2021 16:28:12 (UTC)
  • 27-03-2021 17:28:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9870, 12.9530 at 8 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Monte Cavallo MC 4 145 145
Serravalle di Chienti MC 10 1070 1215
Pieve Torina MC 10 1458 2673
Sellano PG 11 1079 3752
Fiordimonte MC 13 202 3954
Visso MC 13 1107 5061
Muccia MC 13 915 5976
Pievebovigliana MC 14 866 6842
Preci PG 14 724 7566
Ussita MC 16 444 8010
Fiastra MC 18 559 8569
Sefro MC 18 422 8991
Valtopina PG 18 1398 10389
Acquacanina MC 19 121 10510
Cerreto di Spoleto PG 19 1075 11585
Nocera Umbra PG 19 5839 17424
Camerino MC 19 6974 24398
Castelsantangelo sul Nera MC 19 281 24679

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Foligno (57155 inhabitants)
48 Km E of Perugia (166134 inhabitants)
54 Km NE of Terni (111501 inhabitants)
71 Km NW of Teramo (54892 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
96 Km S of Fano (60888 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
Bulletin
Rev1000 		ML 1.8 2021-03-27
16:28:12		 42.9872 12.9528 8 2021-07-12
16:55:06		 Bollettino Sismico Italiano INGV 89257081
Reviewed
Rev100 		ML 1.8 2021-03-27
16:28:12		 42.9883 12.9433 8 2021-03-27
16:35:17		 Sala Sismica INGV-Roma 88526481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 16:28:12 ± 0.03
Latitude 42.9872 ± 0.0018
Longitude 12.9528 ± 0.0025
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89257081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 177
Semi-minor axis of confidence ellipse (meter) 157
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 155
Circular confidence region, given by single value of horizontal uncertainty (meter) 180.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 28
Number of associated phases, regardless of their use for origin computation 73
Number of defining phases 72
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.67989
Number of stations at which the event was observed 47
Number of stations from which data was used for origin computation 46
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 44
Type of magnitude ML
Reference to an origin 89257081
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-19 12:47:20

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 46
Type of magnitude ML
Reference to an origin 88526481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 16:35:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MIDA.HHZ. 2021-03-27T16:29:06.27 3.0 undecidable manual Sg 2.57 0
IV.CESX.HHZ. 2021-03-27T16:28:29.06 0.3 undecidable manual S 215 51.5151 50 0.05 69
IV.SSFR.HHZ. 2021-03-27T16:28:29.41 0.3 undecidable manual S 345 51.7038 50 0.35 65
IV.CING.HNZ. 2021-03-27T16:28:28.03 0.6 undecidable manual S 24 47.3193 50 0.13 46
IV.T1299.HNN. 2021-03-27T16:28:28.35 0.6 undecidable manual S 145 47.4192 50 0.42 43
IV.ARRO.EHZ. 2021-03-27T16:28:28.06 0.3 undecidable manual S 199 47.7189 50 0.05 70
IV.MURB.HHZ. 2021-03-27T16:28:27.84 0.3 undecidable manual S 312 46.2204 50 0.23 67
IV.LNSS.HHZ. 2021-03-27T16:28:26.61 0.3 undecidable manual S 170 43.2234 50 -0.19 68
IV.MTRA.EHE. 2021-03-27T16:28:26.99 0.6 undecidable manual S 125 44.2224 50 -0.08 46
IV.MPAG.EHZ. 2021-03-27T16:28:25.31 0.3 undecidable manual P 348 72.8715 50 0.12 66
IV.MOMA.HHZ. 2021-03-27T16:28:25.40 0.3 undecidable manual S 237 37.1295 50 0.21 69
IV.EL6.EHZ. 2021-03-27T16:28:25.79 0.3 undecidable manual S 18 39.8268 50 -0.1 70
IV.NARO.HHZ. 2021-03-27T16:28:25.39 0.3 undecidable manual P 337 75.4689 50 -0.19 64
IV.GAVE.EHZ. 2021-03-27T16:28:24.17 0.3 undecidable manual S 188 33.0447 104 0.19 70
IV.ATMI.HHZ. 2021-03-27T16:28:24.72 0.3 undecidable manual P 305 67.4769 50 0.37 63
IV.PIEI.HHZ. 2021-03-27T16:28:24.48 0.3 undecidable manual P 331 69.5748 50 -0.2 65
IV.ATPC.HHE. 2021-03-27T16:28:24.40 0.1 undecidable manual P 324 67.8765 50 -0.01 90
IV.TERO.HHZ. 2021-03-27T16:28:24.05 0.3 undecidable manual P 127 66.6777 50 -0.17 66
IV.TB03.DHZ. 2021-03-27T16:28:23.84 0.1 undecidable manual P 317 63.492 50 0.1 89
IV.CAMP.HHE. 2021-03-27T16:28:23.21 0.3 undecidable manual P 143 62.3931 50 -0.35 64
IV.ATBU.EHZ. 2021-03-27T16:28:23.85 0.1 undecidable manual P 329 63.2922 50 0.14 89
IV.GUMA.HHZ. 2021-03-27T16:28:23.72 0.3 undecidable manual S 75 32.1456 104 0.05 72
IV.TB02.DHZ.01 2021-03-27T16:28:23.64 0.3 undecidable manual P 314 61.1943 50 0.26 65
IV.MMO1.EHN. 2021-03-27T16:28:23.23 0.6 undecidable manual S 108 31.8459 104 -0.36 45
IV.TB01.DHZ.01 2021-03-27T16:28:23.51 0.3 undecidable manual P 316 60.495 50 0.23 66
IV.ATCC.EHZ. 2021-03-27T16:28:23.75 0.3 undecidable manual S 311 33.5442 104 -0.39 66
IV.SSFR.HHZ. 2021-03-27T16:28:22.04 0.3 undecidable manual P 345 51.7038 50 0.12 68
IV.SMA1.EHN. 2021-03-27T16:28:22.06 0.3 undecidable manual P 142 50.3163 50 0.35 65
IV.ARVD.HHZ. 2021-03-27T16:28:22.50 0.3 undecidable manual P 359 56.6988 50 -0.19 67
IV.ATLO.EHE. 2021-03-27T16:28:22.49 0.3 undecidable manual P 310 57.1983 50 -0.28 65
IV.ATFO.HHN. 2021-03-27T16:28:22.09 0.1 undecidable manual P 324 52.2033 50 0.09 91
IV.MNTT.EHZ. 2021-03-27T16:28:22.27 0.3 undecidable manual P 81 52.8027 50 0.18 67
IV.PF6.EHZ. 2021-03-27T16:28:21.26 0.3 undecidable manual S 49 25.752 108 -0.27 69
IV.ATSC.EHE. 2021-03-27T16:28:21.75 0.1 undecidable manual P 336 53.0025 50 -0.38 86
IV.ARRO.EHZ. 2021-03-27T16:28:21.20 0.3 undecidable manual P 199 47.7189 50 -0.12 69
IV.MURB.HHZ. 2021-03-27T16:28:21.03 0.6 undecidable manual P 312 46.2204 50 -0.05 47
IV.CESX.HHZ. 2021-03-27T16:28:21.49 0.3 undecidable manual P 215 51.5151 50 -0.4 64
IV.MDAR.HNZ. 2021-03-27T16:28:21.97 0.3 undecidable manual S 34 27.4503 107 -0.15 71
IV.T1299.HNN. 2021-03-27T16:28:21.33 0.1 undecidable manual P 145 47.4192 50 0.06 93
IV.NRCA.HHZ. 2021-03-27T16:28:20.35 0.3 undecidable manual S 142 21.4674 111 0.2 71
IV.CSP1.EHZ. 2021-03-27T16:28:20.87 0.3 undecidable manual S 60 23.4543 109 0.07 72
IV.SAP2.EHE. 2021-03-27T16:28:20.19 0.3 undecidable manual P 71 38.1285 50 0.36 66
IV.LNSS.HHZ. 2021-03-27T16:28:20.37 0.1 undecidable manual P 170 43.2234 50 -0.24 90
IT.FOPC.HGZ. 2021-03-27T16:28:20.12 0.3 undecidable manual S 265 20.3685 112 0.34 69
IV.ASSB.HHZ. 2021-03-27T16:28:20.98 0.3 undecidable manual S 285 24.6531 108 -0.19 70
IV.MF5.EHZ. 2021-03-27T16:28:20.51 0.3 undecidable manual P 90 41.1255 50 0.22 68
IV.CING.HNZ. 2021-03-27T16:28:20.97 0.1 undecidable manual P 24 47.3193 50 -0.28 89
IV.MC2.EHZ. 2021-03-27T16:28:20.32 0.3 undecidable manual S 114 20.9679 111 0.36 69
IV.MTRA.EHE. 2021-03-27T16:28:20.40 0.1 undecidable manual P 125 44.2224 50 -0.37 87
IV.EL6.EHZ. 2021-03-27T16:28:19.82 0.1 undecidable manual P 18 39.8268 50 -0.27 90
IV.MOMA.HHZ. 2021-03-27T16:28:19.36 0.3 undecidable manual P 237 37.1295 50 -0.32 67
IV.ATCC.EHZ. 2021-03-27T16:28:18.86 0.3 undecidable manual P 311 33.5442 104 -0.22 69
IV.SEF1.HNZ. 2021-03-27T16:28:18.89 0.6 undecidable manual S 359 17.6712 115 -0.04 49
IV.GAVE.EHZ. 2021-03-27T16:28:18.82 0.1 undecidable manual P 188 33.0447 104 -0.17 93
IV.GUMA.HHZ. 2021-03-27T16:28:18.93 0.3 undecidable manual P 75 32.1456 104 0.13 71
IV.MMO1.EHN. 2021-03-27T16:28:18.41 0.1 undecidable manual P 108 31.8459 104 -0.35 90
IV.FIU1.HNZ. 2021-03-27T16:28:17.23 0.1 undecidable manual P 356 22.3554 110 0.29 92
IV.MDAR.HNZ. 2021-03-27T16:28:17.78 0.1 undecidable manual P 34 27.4503 107 -0.13 95
IV.FDMO.HHZ. 2021-03-27T16:28:17.48 0.3 undecidable manual S 63 12.1767 124 0.22 72
IV.PF6.EHZ. 2021-03-27T16:28:17.55 0.3 undecidable manual P 49 25.752 108 -0.02 73
IV.MML1.HNZ. 2021-03-27T16:28:17.81 0.6 undecidable manual S 6 14.0748 120 -0.01 50
IV.CSP1.EHZ. 2021-03-27T16:28:17.31 0.1 undecidable manual P 60 23.4543 109 0.16 95
IV.ASSB.HHZ. 2021-03-27T16:28:17.28 0.1 undecidable manual P 285 24.6531 108 -0.08 96
IV.MC2.EHZ. 2021-03-27T16:28:16.81 0.3 undecidable manual P 114 20.9679 111 0.14 72
IV.NRCA.HHZ. 2021-03-27T16:28:16.87 0.3 undecidable manual P 142 21.4674 111 0.1 72
IV.SEF1.HNZ. 2021-03-27T16:28:16.19 0.1 undecidable manual P 359 17.6712 115 0.12 97
IT.FOPC.HGZ. 2021-03-27T16:28:16.81 0.1 undecidable manual P 265 20.3685 112 0.25 94
IV.CESI.HHZ. 2021-03-27T16:28:15.20 0.3 undecidable manual S 297 4.3956 152 -0.19 73
IV.FDMO.HHZ. 2021-03-27T16:28:15.32 0.3 undecidable manual P 63 12.1767 124 0.21 72
IV.MML1.HNZ. 2021-03-27T16:28:15.61 0.1 undecidable manual P 6 14.0748 120 0.18 96
IT.MTCL.HGZ. 2021-03-27T16:28:14.95 0.1 undecidable manual S 79 3.8961 155 -0.35 94
IT.MTCL.HGZ. 2021-03-27T16:28:14.04 0.1 undecidable manual P 79 3.8961 155 0.06 100
IV.CESI.HHZ. 2021-03-27T16:28:14.18 0.1 undecidable manual P 297 4.3956 152 0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.8 0.0007885 0.32 AML other m 2021-03-27T16:28:17.68
IV.FDMO.HHN. ML:1.8 0.0007055 0.18 AML other m 2021-03-27T16:28:17.88
IV.NRCA.HHN. ML:1.8 0.0005425 0.16 AML other m 2021-03-27T16:28:20.64
IV.NRCA.HNN. ML:1.8 0.0005355 0.16 AML other m 2021-03-27T16:28:20.64
IV.ASSB.HHN. ML:2.1 0.0007435 0.24 AML other m 2021-03-27T16:28:21.43
IV.NRCA.HHE. ML:1.8 0.000492 0.14 AML other m 2021-03-27T16:28:21.82
IV.NRCA.HNE. ML:1.8 0.000448 0.14 AML other m 2021-03-27T16:28:21.82
IV.ASSB.HHE. ML:1.9 0.0005355000000000001 0.44 AML other m 2021-03-27T16:28:22.24
IV.ATCC.EHE. ML:1.7 0.00022700000000000002 0.32 AML other m 2021-03-27T16:28:24.37
IV.GUMA.HHN. ML:2.2 0.0007 0.5 AML other m 2021-03-27T16:28:24.44
IV.EL6.EHE. ML:2.1 0.000418 0.4 AML other m 2021-03-27T16:28:26.11
IV.GUMA.HHE. ML:2.2 0.0006635 0.46 AML other m 2021-03-27T16:28:26.27
IV.GAVE.EHE. ML:1.9 0.000361 0.18 AML other m 2021-03-27T16:28:26.43
IV.GAVE.EHN. ML:1.8 0.000282 0.48 AML other m 2021-03-27T16:28:26.47
IV.EL6.EHN. ML:2.1 0.0004525 0.18 AML other m 2021-03-27T16:28:26.51
IV.MOMA.HHN. ML:1.6 0.0001435 0.82 AML other m 2021-03-27T16:28:26.55
IV.LNSS.HHE. ML:1.8 0.00019600000000000002 0.14 AML other m 2021-03-27T16:28:26.97
IV.GAVE.HNE. ML:2.0 0.00042249999999999997 0.6 AML other m 2021-03-27T16:28:27.42
IV.GAVE.HNN. ML:1.7 0.0002005 0.78 AML other m 2021-03-27T16:28:27.16
IV.ATCC.EHN. ML:1.6 0.000192 0.62 AML other m 2021-03-27T16:28:27.47
IV.LNSS.HHN. ML:1.9 0.0002475 0.2 AML other m 2021-03-27T16:28:27.22
IV.MOMA.HHE. ML:1.6 0.00016199999999999998 0.84 AML other m 2021-03-27T16:28:28.36
IV.ARRO.EHE. ML:1.5 0.00009355 0.58 AML other m 2021-03-27T16:28:28.53
IV.MF5.EHE. ML:1.6 0.0001485 1.74 AML other m 2021-03-27T16:28:29.06
IV.MURB.HHE. ML:1.8 0.00020050000000000002 0.96 AML other m 2021-03-27T16:28:30.30
IV.SSFR.HHE. ML:2.0 0.000261 0.18 AML other m 2021-03-27T16:28:30.76
IV.CESX.HHE. ML:1.7 0.0001275 0.24 AML other m 2021-03-27T16:28:30.86
IV.MF5.EHN. ML:1.7 0.0001815 0.88 AML other m 2021-03-27T16:28:31.15
IV.ARVD.HHN. ML:2.0 0.0002035 0.14 AML other m 2021-03-27T16:28:31.37
IV.SSFR.HHN. ML:1.9 0.0001905 0.5 AML other m 2021-03-27T16:28:31.67
IV.MURB.HHN. ML:2.0 0.0002715 0.48 AML other m 2021-03-27T16:28:31.51
IV.ARRO.EHN. ML:1.6 0.00010499999999999999 0.22 AML other m 2021-03-27T16:28:31.54
IV.CESX.HHN. ML:1.7 0.000129 0.38 AML other m 2021-03-27T16:28:31.92
IV.ARVD.HHE. ML:2.1 0.00027 0.98 AML other m 2021-03-27T16:28:31.28
IV.TERO.HHN. ML:1.4 0.00004405 0.44 AML other m 2021-03-27T16:28:35.83
IV.TERO.HHE. ML:1.4 0.00004215 0.34 AML other m 2021-03-27T16:28:36.39
IV.NARO.HHE. ML:1.4 0.0000332 0.66 AML other m 2021-03-27T16:28:37.86
IV.ATMI.HHE. ML:1.7 0.0000965 0.88 AML other m 2021-03-27T16:28:39.62
IV.MPAG.EHE. ML:1.5 0.00004775 0.64 AML other m 2021-03-27T16:28:39.73
IV.PIEI.HHN. ML:1.2 0.00003115 0.56 AML other m 2021-03-27T16:28:39.25
IV.ATMI.HHN. ML:1.7 0.0000931 1.22 AML other m 2021-03-27T16:28:39.16
IV.MPAG.EHN. ML:1.4 0.0000412 0.96 AML other m 2021-03-27T16:28:40.12
IV.PIEI.HHE. ML:1.5 0.00005415 0.34 AML other m 2021-03-27T16:28:40.61
IV.NARO.HHN. ML:1.4 0.0000336 0.92 AML other m 2021-03-27T16:28:41.21
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