Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 27-03-2021 and time 17:21:56 (Italy) in region 5 km W Monte Cavallo (MC)

A magnitude ML 1.2 earthquake occured in region: 5 km W Monte Cavallo (MC), on

  • 27-03-2021 16:21:56 (UTC)
  • 27-03-2021 17:21:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9910, 12.9460 at 9 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 5 145 145
Serravalle di Chienti MC 9 1070 1215
Pieve Torina MC 11 1458 2673
Sellano PG 11 1079 3752
Fiordimonte MC 13 202 3954
Muccia MC 13 915 4869
Visso MC 13 1107 5976
Pievebovigliana MC 14 866 6842
Preci PG 15 724 7566
Ussita MC 17 444 8010
Valtopina PG 17 1398 9408
Sefro MC 17 422 9830
Fiastra MC 18 559 10389
Nocera Umbra PG 18 5839 16228
Camerino MC 19 6974 23202
Cerreto di Spoleto PG 19 1075 24277
Acquacanina MC 19 121 24398
Castelsantangelo sul Nera MC 20 281 24679

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Foligno (57155 inhabitants)
47 Km E of Perugia (166134 inhabitants)
54 Km NE of Terni (111501 inhabitants)
72 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)
95 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 1.2 2021-03-27
16:21:56		 42.991 12.9457 9 2021-07-12
16:55:06		 Bollettino Sismico Italiano INGV 89252771
Reviewed
Rev100 		ML 1.3 2021-03-27
16:21:56		 42.9898 12.9523 9 2021-03-27
16:29:59		 Sala Sismica INGV-Roma 88526411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 16:21:56 ± 0.04
Latitude 42.9910 ± 0.0027
Longitude 12.9457 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89252771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 246
Semi-minor axis of confidence ellipse (meter) 237
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 39
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 48
Number of associated phases, regardless of their use for origin computation 59
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.46405
Number of stations at which the event was observed 42
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 88526411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 16:29:59

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 89252771
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-19 10:19:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CADC.EHZ. 2021-03-27T16:23:46.05 3.0 undecidable manual Sg 17.67 0
IV.IFIL.HHZ. 2021-03-27T16:23:45.93 3.0 undecidable manual Sg 10.48 0
IV.MBAL.EHZ. 2021-03-27T16:23:24.65 3.0 undecidable manual Sn -2.27 0
IV.ACATE.EHZ. 2021-03-27T16:23:23.12 3.0 positive manual Pg 15.01 0
MN.TRI.HHZ. 2021-03-27T16:23:17.24 3.0 undecidable manual Sn -2.03 0
IV.NDIM.HNZ. 2021-03-27T16:23:15.09 3.0 undecidable manual Sg 5.7 0
IX.STN3.HNZ.01 2021-03-27T16:23:06.62 3.0 undecidable manual Sg 3.05 0
IV.HAGA.HHZ. 2021-03-27T16:23:04.89 3.0 undecidable manual Pn -1.49 0
OT.OT12.EHZ. 2021-03-27T16:22:55.90 3.0 undecidable manual Sg 3.19 0
IV.MSAG.HHZ. 2021-03-27T16:22:54.99 3.0 undecidable manual P 2.9 0
IV.ZEN8.EHZ. 2021-03-27T16:22:54.84 3.0 undecidable manual Pg 12.01 0
IV.SGRT.HHZ. 2021-03-27T16:22:54.73 3.0 undecidable manual Sg 5.87 0
OT.OT14.EHZ. 2021-03-27T16:22:51.94 3.0 undecidable manual Sg 1.21 0
IV.MCRV.HHZ. 2021-03-27T16:22:48.21 3.0 undecidable manual Sn -4.66 0
IV.SNAL.HHZ. 2021-03-27T16:22:47.62 3.0 undecidable manual Sn -3.33 0
IV.AGLI.HHZ. 2021-03-27T16:22:45.37 3.0 positive manual Pg 8.93 0
IV.SGAL.EHZ. 2021-03-27T16:22:44.69 3.0 undecidable manual Pn 0.66 0
IV.IMOL.HNZ. 2021-03-27T16:22:28.16 3.0 negative manual Pg 5.43 0
OT.OT13.EHZ. 2021-03-27T16:22:21.19 3.0 negative manual Pn -4.24 0
IV.CPGN.EHZ. 2021-03-27T16:22:14.63 3.0 undecidable manual P 1.24 0
IV.ARRO.EHZ. 2021-03-27T16:22:12.08 0.6 undecidable manual S 198 48.0186 50 0.14 46
IV.LNSS.HNZ. 2021-03-27T16:22:10.80 0.6 undecidable manual S 170 43.7229 50 0 48
IV.EL6.EHZ. 2021-03-27T16:22:09.86 0.3 undecidable manual S 19 39.627 50 0.16 70
IV.PE3.EHZ. 2021-03-27T16:22:09.99 3.0 undecidable manual P -1.45 0
IV.MOMA.HHZ. 2021-03-27T16:22:09.12 0.3 undecidable manual S 236 36.9297 50 0.14 71
IV.GAVE.EHN. 2021-03-27T16:22:08.41 0.6 undecidable manual S 187 33.4443 50 0.36 45
IV.MMO1.EHZ. 2021-03-27T16:22:07.57 0.3 undecidable manual S 108 32.5452 50 -0.25 69
IV.ATCC.EHZ. 2021-03-27T16:22:07.73 0.3 undecidable manual S 311 32.8449 50 -0.16 71
IV.PF6.EHZ. 2021-03-27T16:22:05.30 0.6 undecidable manual S 51 25.9518 109 -0.47 45
IV.ASSB.HHZ. 2021-03-27T16:22:05.12 0.3 undecidable manual S 284 23.9538 111 -0.01 74
IV.CESX.HHE. 2021-03-27T16:22:05.39 0.6 undecidable manual P 215 51.5151 50 -0.45 43
IV.ARRO.EHZ. 2021-03-27T16:22:05.15 0.1 undecidable manual P 198 48.0186 50 -0.15 92
IV.CSP1.EHZ. 2021-03-27T16:22:05.08 0.3 undecidable manual S 62 23.754 111 0 74
IV.MC2.EHZ. 2021-03-27T16:22:04.64 0.3 undecidable manual S 114 21.6672 113 0.26 71
IV.EL6.EHZ. 2021-03-27T16:22:04.00 0.3 undecidable manual P 19 39.627 50 -0.01 72
IV.LNSS.HNZ. 2021-03-27T16:22:04.55 0.1 undecidable manual P 170 43.7229 50 -0.1 94
IV.NRCA.HHZ. 2021-03-27T16:22:04.58 0.3 undecidable manual S 142 22.1556 112 0.02 74
IV.MCIV.CHZ. 2021-03-27T16:22:04.16 3.0 undecidable manual P -3.63 0
IV.MOMA.HHZ. 2021-03-27T16:22:03.69 0.3 undecidable manual P 236 36.9297 50 0.1 71
IV.FOSV.HNE. 2021-03-27T16:22:03.43 0.6 undecidable manual P 336 36.8298 50 -0.16 47
IV.ATCC.EHZ. 2021-03-27T16:22:03.01 0.3 undecidable manual P 311 32.8449 50 0.05 72
IV.GAVE.EHN. 2021-03-27T16:22:02.80 0.3 undecidable manual P 187 33.4443 50 -0.25 69
IV.MML1.EHZ. 2021-03-27T16:22:02.07 0.3 undecidable manual S 9 13.7751 124 0.11 74
IV.MMO1.EHZ. 2021-03-27T16:22:02.72 0.3 undecidable manual P 108 32.5452 50 -0.21 70
IV.FDMO.HHZ. 2021-03-27T16:22:01.63 0.6 undecidable manual S 66 12.5763 126 0.01 50
IV.CSP1.EHZ. 2021-03-27T16:22:01.47 0.6 positive manual P 62 23.754 111 0.13 48
IV.PF6.EHZ. 2021-03-27T16:22:01.71 0.3 undecidable manual P 51 25.9518 109 -0.03 74
IV.ASSB.HHZ. 2021-03-27T16:22:01.51 0.1 positive manual P 284 23.9538 111 0.14 96
IV.MC2.EHZ. 2021-03-27T16:22:01.04 0.3 undecidable manual P 114 21.6672 113 0.1 73
IV.NRCA.HHZ. 2021-03-27T16:22:01.14 0.1 undecidable manual P 142 22.1556 112 0.1 97
IV.VIVA.HHZ. 2021-03-27T16:22:00.24 3.0 negative manual P -0.35 0
IV.FEMA.HNE. 2021-03-27T16:22:00.69 0.3 undecidable manual S 111 9.0798 135 0.01 76
IT.MTCL.HGZ. 2021-03-27T16:21:59.14 0.3 undecidable manual S 86 4.3956 154 -0.6 67
IV.FEMA.HNE. 2021-03-27T16:21:59.06 0.1 undecidable manual P 111 9.0798 135 0.25 97
IV.FDMO.HHZ. 2021-03-27T16:21:59.55 0.1 positive manual P 66 12.5763 126 0.21 97
IV.CESI.HHZ. 2021-03-27T16:21:59.36 0.1 undecidable manual S 295 3.6963 158 -0.28 97
IV.MML1.EHZ. 2021-03-27T16:21:59.82 0.1 undecidable manual P 9 13.7751 124 0.28 95
IV.CESI.HHZ. 2021-03-27T16:21:58.33 0.1 undecidable manual P 295 3.6963 158 0.13 100
IT.MTCL.HGZ. 2021-03-27T16:21:58.22 0.3 undecidable manual P 86 4.3956 154 -0.04 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.8 0.001295 0.1 AML other m 2021-03-27T16:21:59.45
IV.CESI.HHN. ML:1.8 0.001138 0.14 AML other m 2021-03-27T16:21:59.47
IV.FDMO.HHE. ML:1.1 0.00014350000000000002 0.3 AML other m 2021-03-27T16:22:01.69
IV.FDMO.HHN. ML:1.1 0.000146 0.16 AML other m 2021-03-27T16:22:02.05
IV.NRCA.HHN. ML:1.3 0.000135 1.56 AML other m 2021-03-27T16:22:05.80
IV.CSP1.EHE. ML:1.4 0.00014407883 0.1152 AML other m 2021-03-27T16:22:05.48
IV.ASSB.HHN. ML:1.2 0.00010955 0.24 AML other m 2021-03-27T16:22:05.59
IV.NRCA.HHE. ML:1.2 0.00011380000000000001 1.58 AML other m 2021-03-27T16:22:05.92
IV.ASSB.HHE. ML:1.0 0.0000713 0.68 AML other m 2021-03-27T16:22:06.39
IV.CSP1.EHN. ML:1.4 0.00017330239 0.3072 AML other m 2021-03-27T16:22:06.62
IV.ATCC.EHE. ML:0.8 0.000029725034999999997 0.1408 AML other m 2021-03-27T16:22:08.45
IV.ATCC.EHN. ML:0.8 0.00002579187 1.744 AML other m 2021-03-27T16:22:10.08
IV.EL6.EHE. ML:1.3 0.00007445000000000001 0.36 AML other m 2021-03-27T16:22:11.42
IV.EL6.EHN. ML:1.4 0.00009055 0.52 AML other m 2021-03-27T16:22:11.76
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