Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 31-05-2021 and time 12:34:26 (Italy) in region 2 km S Fiordimonte (MC)

A magnitude ML 1.5 earthquake occured in region: 2 km S Fiordimonte (MC), on

  • 31-05-2021 10:34:26 (UTC)
  • 31-05-2021 12:34:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0170, 13.0960 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Fiordimonte MC 2 202 202
Pieve Torina MC 5 1458 1660
Pievebovigliana MC 5 866 2526
Fiastra MC 5 559 3085
Acquacanina MC 7 121 3206
Monte Cavallo MC 8 145 3351
Muccia MC 9 915 4266
Ussita MC 9 444 4710
Visso MC 10 1107 5817
Bolognola MC 11 142 5959
Serravalle di Chienti MC 13 1070 7029
Camerino MC 14 6974 14003
Castelsantangelo sul Nera MC 14 281 14284
Preci PG 16 724 15008
Cessapalombo MC 17 512 15520
Sarnano MC 17 3264 18784
Caldarola MC 17 1823 20607
Sefro MC 19 422 21029
Camporotondo di Fiastrone MC 19 563 21592
Serrapetrona MC 20 966 22558
Sellano PG 20 1079 23637

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
58 Km E of Perugia (166134 inhabitants)
63 Km NE of Terni (111501 inhabitants)
64 Km NW of Teramo (54892 inhabitants)
75 Km SW of Ancona (100861 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
92 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 1.5 2021-05-31
10:34:26		 43.0168 13.0962 8 2021-12-29
11:12:05		 Bollettino Sismico Italiano INGV 91483591
Reviewed
Rev100 		ML 1.5 2021-05-31
10:34:27		 43.0172 13.0998 7 2021-05-31
10:41:49		 Sala Sismica INGV-Roma 90658771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-31 10:34:26 ± 0.04
Latitude 43.0168 ± 0.0027
Longitude 13.0962 ± 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 91483591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 270
Semi-minor axis of confidence ellipse (meter) 209
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 37
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 42
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 40
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) 0.02068
Epicentral distance of station farthest from the epicenter (degree) 0.61873
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 91483591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-18 08:08:54

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 90658771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-31 10:41:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2021-05-31T10:34:46.26 0.3 undecidable manual S 136 60.1953 50 0.16 68
IV.MOMA.HHZ. 2021-05-31T10:34:43.39 0.3 undecidable manual S 241 48.8178 50 0.31 67
IV.FOSV.HNE. 2021-05-31T10:34:41.33 0.3 undecidable manual S 319 41.0256 50 0.32 68
IV.GAVE.EHN. 2021-05-31T10:34:40.46 0.6 undecidable manual S 205 39.627 50 -0.15 47
IV.CING.HHZ. 2021-05-31T10:34:40.85 0.3 undecidable manual S 11 40.626 50 -0.03 72
IV.ASSB.HHZ. 2021-05-31T10:34:39.28 0.3 undecidable manual S 275 35.6421 50 -0.26 69
IV.COR1.EHZ. 2021-05-31T10:34:39.02 0.6 undecidable manual P 354 68.6757 50 -0.31 43
IV.EL6.EHZ. 2021-05-31T10:34:39.56 0.3 undecidable manual S 1 34.6431 50 0.26 69
IV.TERO.HHZ. 2021-05-31T10:34:37.74 0.3 undecidable manual P 136 60.1953 50 -0.28 66
IV.MF5.EHZ. 2021-05-31T10:34:37.99 0.3 undecidable manual S 96 29.6481 106 0.32 69
IV.MOMA.HHZ. 2021-05-31T10:34:36.64 0.3 undecidable manual P 241 48.8178 50 0.37 66
IV.MMO1.EHZ. 2021-05-31T10:34:35.36 0.3 undecidable manual S 125 22.8549 110 -0.05 74
IV.FOSV.HNE. 2021-05-31T10:34:34.76 0.1 undecidable manual P 319 41.0256 50 -0.31 90
IV.GUMA.HHZ. 2021-05-31T10:34:34.82 0.3 undecidable manual S 75 20.0688 113 0.32 70
IV.ASSB.HHZ. 2021-05-31T10:34:34.27 0.3 undecidable manual P 275 35.6421 50 0.04 72
IV.GAVE.EHN. 2021-05-31T10:34:34.60 0.1 undecidable manual P 205 39.627 50 -0.25 92
IV.CING.HHZ. 2021-05-31T10:34:34.87 0.3 undecidable manual P 11 40.626 50 -0.13 70
IV.NRCA.HHZ. 2021-05-31T10:34:34.52 0.3 undecidable manual S 176 20.3685 112 -0.1 73
IV.MTRA.EHE. 2021-05-31T10:34:34.16 0.6 undecidable manual P 140 37.8288 50 -0.41 44
IV.MF5.EHZ. 2021-05-31T10:34:33.16 0.6 undecidable manual P 96 29.6481 106 0.01 49
IV.PF6.EHZ. 2021-05-31T10:34:33.12 0.3 undecidable manual S 31 15.5733 118 0.01 75
IV.EL6.EHZ. 2021-05-31T10:34:33.82 0.3 undecidable manual P 1 34.6431 50 -0.27 69
IV.MML1.HNZ. 2021-05-31T10:34:33.13 0.3 undecidable manual S 317 14.6742 119 0.28 71
IV.CESI.HHZ. 2021-05-31T10:34:33.45 0.3 undecidable manual S 265 15.5733 118 0.34 70
IV.MC2.EHZ. 2021-05-31T10:34:32.81 0.3 undecidable manual S 147 13.875 121 0.21 73
IV.CSP1.EHZ. 2021-05-31T10:34:32.20 0.3 undecidable manual S 47 12.0768 124 0.12 74
IT.MTCL.HGZ. 2021-05-31T10:34:31.03 0.6 undecidable manual S 252 8.2806 135 -0.01 51
IV.NRCA.HHZ. 2021-05-31T10:34:31.38 0.1 undecidable manual P 176 20.3685 112 -0.01 100
IV.MMO1.EHZ. 2021-05-31T10:34:31.73 0.3 undecidable manual P 125 22.8549 110 -0.11 73
IV.GUMA.HHZ. 2021-05-31T10:34:31.72 0.3 undecidable manual P 75 20.0688 113 0.4 69
IV.MC2.EHZ. 2021-05-31T10:34:30.28 0.3 undecidable manual P 147 13.875 121 0.06 75
IV.CESI.HHZ. 2021-05-31T10:34:30.68 0.3 undecidable manual P 265 15.5733 118 0.16 73
IV.FEMA.HNZ. 2021-05-31T10:34:30.69 0.3 undecidable manual S 212 7.1928 139 -0.09 75
IV.PF6.EHZ. 2021-05-31T10:34:30.35 0.3 undecidable manual P 31 15.5733 118 -0.17 73
IV.MML1.HNZ. 2021-05-31T10:34:30.47 0.3 undecidable manual P 317 14.6742 119 0.1 74
IV.FDMO.HHZ. 2021-05-31T10:34:29.19 0.3 undecidable manual S 342 2.2977 165 -0.78 62
IV.CSP1.EHZ. 2021-05-31T10:34:29.63 0.6 undecidable manual P 47 12.0768 124 -0.29 48
IT.MTCL.HGZ. 2021-05-31T10:34:29.50 0.1 undecidable manual P 252 8.2806 135 0.17 98
IV.FEMA.HNZ. 2021-05-31T10:34:29.28 0.1 undecidable manual P 212 7.1928 139 0.11 100
IV.FDMO.HHZ. 2021-05-31T10:34:28.40 0.1 undecidable manual P 342 2.2977 165 -0.31 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.6 0.000372 0.12 AML other m 2021-05-31T10:34:33.94
IV.CESI.HHE. ML:1.5 0.00028700000000000004 1.56 AML other m 2021-05-31T10:34:33.10
IV.NRCA.HHN. ML:1.5 0.00023999999999999998 0.3 AML other m 2021-05-31T10:34:35.08
IV.NRCA.HHE. ML:1.6 0.0002785 0.84 AML other m 2021-05-31T10:34:35.47
IV.GUMA.HNN. ML:1.8 0.000486 0.36 AML other m 2021-05-31T10:34:35.68
IV.GUMA.HHN. ML:1.6 0.0002895 0.24 AML other m 2021-05-31T10:34:35.69
IV.GUMA.HHE. ML:1.8 0.000518 0.32 AML other m 2021-05-31T10:34:35.68
IV.ASSB.HHN. ML:1.4 0.00010785 0.36 AML other m 2021-05-31T10:34:39.96
IV.GUMA.HNE. ML:1.6 0.00032900000000000003 0.48 AML other m 2021-05-31T10:34:40.27
IV.ASSB.HHE. ML:1.1 0.0000562 0.56 AML other m 2021-05-31T10:34:41.47
IV.MOMA.HHE. ML:1.0 0.0000276 1.08 AML other m 2021-05-31T10:34:44.42
IV.MOMA.HHN. ML:1.2 0.000038599999999999996 0.2 AML other m 2021-05-31T10:34:45.24
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