Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 27-03-2021 and time 18:29:29 (Italy) in region 5 km W Monte Cavallo (MC)

A magnitude ML 0.9 earthquake occured in region: 5 km W Monte Cavallo (MC), on

  • 27-03-2021 17:29:29 (UTC)
  • 27-03-2021 18:29:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9900, 12.9430 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 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 14 1107 5976
Pievebovigliana MC 14 866 6842
Preci PG 15 724 7566
Ussita MC 17 444 8010
Valtopina PG 17 1398 9408
Sefro MC 18 422 9830
Fiastra MC 18 559 10389
Nocera Umbra PG 18 5839 16228
Cerreto di Spoleto PG 19 1075 17303
Camerino MC 19 6974 24277
Acquacanina MC 20 121 24398
Foligno PG 20 57155 81553

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Foligno (57155 inhabitants)
47 Km E of Perugia (166134 inhabitants)
53 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)
93 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 0.9 2021-03-27
17:29:29		 42.9902 12.9427 8 2021-07-12
16:55:07		 Bollettino Sismico Italiano INGV 89323991
Reviewed
Rev100 		ML 0.9 2021-03-27
17:29:29		 42.9853 12.942 7 2021-03-27
17:40:15		 Sala Sismica INGV-Roma 88528151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 17:29:29 ± 0.05
Latitude 42.9902 ± 0.0027
Longitude 12.9427 ± 0.0037
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 89323991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 295
Semi-minor axis of confidence ellipse (meter) 127
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 33
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.03148
Epicentral distance of station farthest from the epicenter (degree) 0.50812
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 88528151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 17:40:15

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 89323991
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-21 08:57:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CING.HNZ. 2021-03-27T17:29:44.93 0.6 undecidable manual S 25 47.4192 50 -0.04 46
IV.LNSS.HNZ. 2021-03-27T17:29:43.71 0.6 undecidable manual S 169 43.7229 50 -0.27 45
IV.EL6.EHE. 2021-03-27T17:29:42.87 0.6 undecidable manual S 19 39.7269 50 -0.06 47
IV.ATCC.EHZ. 2021-03-27T17:29:40.78 0.3 undecidable manual S 312 32.745 104 -0.08 71
IV.ARVD.HHZ. 2021-03-27T17:29:39.66 0.6 undecidable manual P 360 56.3991 50 -0.01 46
IV.PF6.EHZ. 2021-03-27T17:29:38.24 0.6 undecidable manual S 51 26.1516 107 -0.43 44
IV.CSP1.EHZ. 2021-03-27T17:29:38.00 0.6 undecidable manual S 62 24.0537 108 0.03 48
IV.CING.HNZ. 2021-03-27T17:29:38.64 0.6 undecidable manual P 25 47.4192 50 0.35 43
IV.MC2.EHZ. 2021-03-27T17:29:37.68 0.3 undecidable manual S 113 21.867 110 0.44 67
IV.NRCA.HNZ. 2021-03-27T17:29:37.31 0.3 undecidable manual S 141 22.2555 110 -0.08 72
IV.LNSS.HNZ. 2021-03-27T17:29:37.49 0.3 undecidable manual P 169 43.7229 50 -0.23 67
IV.ASSB.HHZ. 2021-03-27T17:29:37.96 0.6 undecidable manual S 284 23.754 109 0.09 48
IV.EL6.EHE. 2021-03-27T17:29:36.89 0.3 undecidable manual P 19 39.7269 50 -0.23 68
IV.MOMA.HNZ. 2021-03-27T17:29:36.74 0.1 undecidable manual P 236 36.6411 50 0.1 93
IV.ATCC.EHZ. 2021-03-27T17:29:35.83 0.3 undecidable manual P 312 32.745 104 -0.09 71
IV.ASSB.HHZ. 2021-03-27T17:29:34.20 0.3 undecidable manual P 284 23.754 109 0 73
IV.MML1.HNE. 2021-03-27T17:29:34.91 0.3 undecidable manual S 10 13.875 120 0.17 72
IV.CSP1.EHZ. 2021-03-27T17:29:34.58 0.3 undecidable manual P 62 24.0537 108 0.32 68
IV.MC2.EHZ. 2021-03-27T17:29:34.16 0.6 undecidable manual P 113 21.867 110 0.33 46
IV.PF6.EHZ. 2021-03-27T17:29:34.56 0.6 undecidable manual P 51 26.1516 107 -0.1 48
IV.FDMO.HHZ. 2021-03-27T17:29:34.34 0.3 undecidable manual S 66 12.7761 122 -0.08 73
IV.FEMA.HNN. 2021-03-27T17:29:33.44 0.3 undecidable manual S 110 9.1797 131 0.03 75
IV.NRCA.HNZ. 2021-03-27T17:29:33.91 0.6 undecidable manual P 141 22.2555 110 0 49
IV.FDMO.HHZ. 2021-03-27T17:29:32.36 0.3 positive manual P 66 12.7761 122 0.16 72
IV.CESI.HHZ. 2021-03-27T17:29:32.16 0.1 undecidable manual S 298 3.4965 156 -0.05 100
IV.MML1.HNE. 2021-03-27T17:29:32.44 0.3 undecidable manual P 10 13.875 120 0.05 74
IV.FEMA.HNN. 2021-03-27T17:29:31.55 0.3 undecidable manual P 110 9.1797 131 -0.07 74
IT.MTCL.HGN. 2021-03-27T17:29:31.95 0.1 undecidable manual S 85 4.5954 150 -0.43 92
IV.CESI.HHZ. 2021-03-27T17:29:31.14 0.1 undecidable manual P 298 3.4965 156 0.22 97
IT.MTCL.HGN. 2021-03-27T17:29:30.99 0.1 undecidable manual P 85 4.5954 150 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.8 0.00007645 0.34 AML other m 2021-03-27T17:29:34.64
IV.FDMO.HHN. ML:0.8 0.00008205 0.42 AML other m 2021-03-27T17:29:34.85
IV.ASSB.HHN. ML:0.9 0.0000566 0.28 AML other m 2021-03-27T17:29:38.41
IV.CSP1.EHE. ML:1.1 0.000076737015 0.3072 AML other m 2021-03-27T17:29:38.55
IV.ASSB.HHE. ML:0.9 0.0000557 0.46 AML other m 2021-03-27T17:29:39.22
IV.CSP1.EHN. ML:1.1 0.000078860815 0.2432 AML other m 2021-03-27T17:29:39.56
IV.ATCC.EHN. ML:0.5 0.0000157885245 0.5408 AML other m 2021-03-27T17:29:41.44
IV.ATCC.EHE. ML:0.8 0.000023275305 1.344 AML other m 2021-03-27T17:29:41.29
IV.ARVD.HHE. ML:1.0 0.000022000690000000004 0.1408 AML other m 2021-03-27T17:29:48.18
IV.ARVD.HHN. ML:0.8 0.000016118522999999998 0.1152 AML other m 2021-03-27T17:29:48.35
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