Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 27-03-2021 and time 17:26:00 (Italy) in region 5 km W Monte Cavallo (MC)

A magnitude ML 0.8 earthquake occured in region: 5 km W Monte Cavallo (MC), on

  • 27-03-2021 16:26:00 (UTC)
  • 27-03-2021 17:26:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9860, 12.9460 at 7 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 10 1070 1215
Sellano PG 11 1079 2294
Pieve Torina MC 11 1458 3752
Fiordimonte MC 13 202 3954
Visso MC 13 1107 5061
Muccia MC 14 915 5976
Preci PG 14 724 6700
Pievebovigliana MC 14 866 7566
Ussita MC 16 444 8010
Valtopina PG 18 1398 9408
Sefro MC 18 422 9830
Fiastra MC 18 559 10389
Cerreto di Spoleto PG 19 1075 11464
Nocera Umbra PG 19 5839 17303
Acquacanina MC 19 121 17424
Camerino MC 20 6974 24398
Castelsantangelo sul Nera MC 20 281 24679
Foligno PG 20 57155 81834

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)
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 0.8 2021-03-27
16:26:00		 42.9855 12.9462 7 2021-07-12
16:55:06		 Bollettino Sismico Italiano INGV 89256491
Reviewed
Rev100 		ML 0.8 2021-03-27
16:26:00		 42.9858 12.9467 9 2021-03-27
16:37:39		 Sala Sismica INGV-Roma 88526561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 16:26:00 ± 0.08
Latitude 42.9855 ± 0.0027
Longitude 12.9462 ± 0.0025
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89256491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 296
Semi-minor axis of confidence ellipse (meter) 86
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 196
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) 65
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.03597
Epicentral distance of station farthest from the epicenter (degree) 0.33005
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 88526561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 16:37:39

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 89256491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-19 12:30:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2021-03-27T16:26:11.90 0.3 undecidable manual S 107 32.3454 103 -0.48 65
IV.PF6.EHZ. 2021-03-27T16:26:10.20 0.6 undecidable manual S 50 26.2515 105 -0.14 47
IV.ASSB.HHZ. 2021-03-27T16:26:09.68 0.3 undecidable manual S 285 24.1536 107 0.05 72
IV.MC2.EHZ. 2021-03-27T16:26:09.04 0.3 undecidable manual S 113 21.3675 109 0.34 68
IV.CSP1.EHZ. 2021-03-27T16:26:09.65 0.3 undecidable manual S 61 24.0537 107 0.05 72
IV.NRCA.HHZ. 2021-03-27T16:26:08.92 0.6 undecidable manual S 141 21.6672 108 0.11 47
IV.MOMA.HNZ. 2021-03-27T16:26:08.41 0.6 undecidable manual P 237 36.6411 101 0.05 47
IV.GAVE.EHN. 2021-03-27T16:26:07.57 0.3 undecidable manual P 187 32.8449 102 -0.04 71
IV.MMO1.EHZ. 2021-03-27T16:26:07.24 0.3 undecidable manual P 107 32.3454 103 -0.28 67
IV.FDMO.HHZ. 2021-03-27T16:26:06.02 0.6 undecidable manual S 64 12.7761 119 0.05 49
IV.MML1.HNZ. 2021-03-27T16:26:06.48 0.3 undecidable manual S 8 14.3745 117 0.03 73
IV.PF6.EHZ. 2021-03-27T16:26:06.41 0.1 undecidable manual P 50 26.2515 105 0.07 95
IV.NRCA.HHZ. 2021-03-27T16:26:05.35 0.3 undecidable manual P 141 21.6672 108 -0.11 71
IV.MC2.EHZ. 2021-03-27T16:26:05.68 0.3 undecidable manual P 113 21.3675 109 0.28 69
IV.CSP1.EHZ. 2021-03-27T16:26:05.83 0.3 undecidable manual P 61 24.0537 107 -0.09 71
IV.ASSB.HHZ. 2021-03-27T16:26:05.77 0.3 undecidable manual P 285 24.1536 107 -0.16 70
IV.FEMA.HNZ. 2021-03-27T16:26:05.07 0.6 undecidable manual S 107 8.7801 129 0.25 47
IV.MML1.HNZ. 2021-03-27T16:26:04.13 0.1 undecidable manual P 8 14.3745 117 0.03 98
IV.CESI.HHZ. 2021-03-27T16:26:03.67 0.3 undecidable manual S 303 3.996 151 -0.06 74
IV.FEMA.HNZ. 2021-03-27T16:26:03.19 0.3 undecidable manual P 107 8.7801 129 0.03 74
IT.MTCL.HGZ. 2021-03-27T16:26:03.55 0.3 undecidable manual S 78 4.3956 148 -0.26 71
IV.FDMO.HHZ. 2021-03-27T16:26:03.94 0.1 positive manual P 64 12.7761 119 0.12 96
IT.MTCL.HGZ. 2021-03-27T16:26:02.57 0.1 undecidable manual P 78 4.3956 148 0 100
IV.CESI.HHZ. 2021-03-27T16:26:02.64 0.3 undecidable manual P 303 3.996 151 0.11 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HNN. ML:0.0 0.00033736995 0.1024 AML other m 2021-03-27T16:26:03.87
IV.CESI.HNE. ML:0.0 0.0004495097 0.0896 AML other m 2021-03-27T16:26:03.80
IV.FDMO.HHE. ML:0.6 0.000056433355000000004 0.2816 AML other m 2021-03-27T16:26:06.05
IV.FDMO.HHN. ML:0.6 0.00005023411 0.256 AML other m 2021-03-27T16:26:06.22
IV.ASSB.HHN. ML:0.9 0.000054982615 0.2432 AML other m 2021-03-27T16:26:10.01
IV.ASSB.HHE. ML:0.7 0.000032470695 0.2816 AML other m 2021-03-27T16:26:09.89
IV.CSP1.EHN. ML:1.0 0.00006893439 0.3968 AML other m 2021-03-27T16:26:09.94
IV.CSP1.EHE. ML:1.0 0.000060439755 0.1408 AML other m 2021-03-27T16:26:09.86
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