Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 15-03-2021 and time 23:19:22 (UTC) in region 2 km W Visso (MC)

A magnitude ML 0.5 earthquake occured in region: 2 km W Visso (MC), on

  • 15-03-2021 23:19:22 (UTC)
  • 16-03-2021 00:19:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9330, 13.0690 at 11 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Visso MC 2 1107 1107
Ussita MC 6 444 1551
Preci PG 6 724 2275
Castelsantangelo sul Nera MC 8 281 2556
Monte Cavallo MC 9 145 2701
Fiordimonte MC 12 202 2903
Sellano PG 13 1079 3982
Pieve Torina MC 13 1458 5440
Fiastra MC 14 559 5999
Acquacanina MC 14 121 6120
Pievebovigliana MC 15 866 6986
Bolognola MC 15 142 7128
Norcia PG 16 4957 12085
Muccia MC 17 915 13000
Cerreto di Spoleto PG 18 1075 14075
Serravalle di Chienti MC 18 1070 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
54 Km NE of Terni (111501 inhabitants)
59 Km E of Perugia (166134 inhabitants)
60 Km NW of Teramo (54892 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
97 Km NE of Viterbo (67173 inhabitants)
100 Km W of Montesilvano (53738 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
Reviewed
Rev100 		ML 0.5 2021-03-15
23:19:22		 42.9332 13.0692 11 2021-03-15
23:29:08		 Sala Sismica INGV-Roma 88174201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-15 23:19:22 ± 0.04
Latitude 42.9332 ± 0.0027
Longitude 13.0692 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 88174201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 319
Semi-minor axis of confidence ellipse (meter) 269
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 58
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.27249
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 88174201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-15 23:29:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GAVE.HNZ. 2021-03-15T23:19:32.81 0.3 undecidable manual S 208 30.2475 90 0.08 73
IV.TERO.HNZ. 2021-03-15T23:19:31.87 3.0 undecidable manual P 0 0
IV.CSP1.EHZ. 2021-03-15T23:19:30.13 0.3 undecidable manual S 32 20.7681 91 -0.05 74
IV.MMO1.EHZ. 2021-03-15T23:19:30.14 0.3 undecidable manual S 100 21.2676 90 -0.18 72
IV.GAVE.HNZ. 2021-03-15T23:19:28.02 0.1 undecidable manual P 208 30.2475 90 -0.25 93
IV.CESI.HNZ. 2021-03-15T23:19:28.76 0.3 undecidable manual S 301 15.5733 92 -0.03 75
IV.FDMO.HHZ. 2021-03-15T23:19:27.55 0.3 undecidable manual S 7 11.5773 111 -0.2 73
IV.NRCA.HNZ. 2021-03-15T23:19:27.60 0.3 undecidable manual S 162 11.6772 111 -0.17 74
IV.MC2.EHZ. 2021-03-15T23:19:27.38 0.3 undecidable manual S 104 10.0788 120 0 76
IV.FEMA.HNZ. 2021-03-15T23:19:26.35 0.3 undecidable manual S 334 3.5964 157 0.11 75
IV.CESI.HNZ. 2021-03-15T23:19:26.13 0.1 undecidable manual P 301 15.5733 92 0.13 98
IV.CSP1.EHZ. 2021-03-15T23:19:26.82 0.1 undecidable manual P 32 20.7681 91 0.02 100
IV.MMO1.EHZ. 2021-03-15T23:19:26.89 0.1 undecidable manual P 100 21.2676 90 0.01 100
IT.MTCL.HGZ. 2021-03-15T23:19:26.83 0.3 undecidable manual S 320 8.7801 127 -0.28 73
IV.MC2.EHZ. 2021-03-15T23:19:25.43 0.1 undecidable manual P 104 10.0788 120 0.24 97
IT.MTCL.HGZ. 2021-03-15T23:19:25.12 0.1 undecidable manual P 320 8.7801 127 0.09 100
IV.FDMO.HHZ. 2021-03-15T23:19:25.54 0.1 undecidable manual P 7 11.5773 111 0.14 99
IV.NRCA.HNZ. 2021-03-15T23:19:25.51 0.1 undecidable manual P 162 11.6772 111 0.09 100
IV.FEMA.HNZ. 2021-03-15T23:19:24.51 0.3 undecidable manual P 334 3.5964 157 -0.02 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.4 0.000031604090000000004 0.2304 AML other m 2021-03-15T23:19:27.76
IV.FDMO.HHN. ML:0.5 0.00003279688 0.1792 AML other m 2021-03-15T23:19:27.71
IV.CSP1.EHE. ML:0.6 0.000025033169999999997 0.1536 AML other m 2021-03-15T23:19:30.74
IV.CSP1.EHN. ML:0.6 0.000028376614999999996 0.1024 AML other m 2021-03-15T23:19:30.65
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