Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 03-03-2021 and time 02:23:48 (UTC) in region 2 km NE Visso (MC)

A magnitude ML 1.4 earthquake occured in region: 2 km NE Visso (MC), on

  • 03-03-2021 02:23:48 (UTC)
  • 03-03-2021 03:23:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.95, 13.11 at 12 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 2 444 1551
Castelsantangelo sul Nera MC 7 281 1832
Preci PG 9 724 2556
Fiordimonte MC 10 202 2758
Monte Cavallo MC 10 145 2903
Fiastra MC 11 559 3462
Acquacanina MC 11 121 3583
Bolognola MC 11 142 3725
Pieve Torina MC 12 1458 5183
Pievebovigliana MC 13 866 6049
Sellano PG 16 1079 7128
Muccia MC 16 915 8043
Norcia PG 17 4957 13000
Montemonaco AP 19 604 13604
Sarnano MC 19 3264 16868
Montefortino FM 19 1178 18046
Serravalle di Chienti MC 19 1070 19116

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
57 Km NE of Terni (111501 inhabitants)
58 Km NW of Teramo (54892 inhabitants)
61 Km E of Perugia (166134 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
98 Km NW of Montesilvano (53738 inhabitants)
100 Km S of Fano (60888 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.4 2021-03-03
02:23:48		 42.95 13.11 12 2021-03-03
02:54:08		 Sala Sismica INGV-Roma 87645111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-03 02:23:48 ± 0.05
Latitude 42.95 ± 0.00
Longitude 13.11 ± 0.00
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87645111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 55
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 269
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 39
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.04676
Epicentral distance of station farthest from the epicenter (degree) 0.76712
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 87645111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-03 02:54:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NARO.HHZ. 2021-03-03T02:24:03.26 1.0 positive manual P 330 0.7671 91 0.35 20
IV.ATCC.EHZ. 2021-03-03T02:24:03.54 0.3 undecidable manual S 305 0.4173 92 0.34 65
IV.SMA1.EHZ. 2021-03-03T02:24:01.52 0.3 undecidable manual S 152 0.357 93 0.12 70
IV.LNSS.HHZ. 2021-03-03T02:24:01.15 0.3 undecidable manual S 188 0.3471 93 0.03 71
IV.MF5.EHZ. 2021-03-03T02:23:59.11 0.1 undecidable manual S 81 0.259 95 0.6 85
IV.MURB.HHZ. 2021-03-03T02:23:59.00 1.0 negative manual P 307 0.5315 92 0.13 22
IV.ARVD.HHZ. 2021-03-03T02:23:59.69 0.6 positive manual P 348 0.5648 91 0.25 43
IV.GAVE.EHZ. 2021-03-03T02:23:59.76 0.3 undecidable manual S 212 0.2995 94 0.05 71
IV.SSFR.HHZ. 2021-03-03T02:23:59.26 1.0 negative manual P 334 0.5441 91 0.16 22
IV.ATFO.HHZ. 2021-03-03T02:23:59.87 1.0 negative manual P 317 0.5747 91 0.26 21
IV.MTRA.EHZ. 2021-03-03T02:23:58.90 0.6 undecidable manual S 132 0.2833 94 -0.32 45
IV.RM33.EHZ. 2021-03-03T02:23:57.41 1.0 positive manual P 170 0.4443 92 0.03 23
IV.TERO.HHZ. 2021-03-03T02:23:57.96 1.0 undecidable manual P 132 0.4856 92 -0.14 22
IV.FOSV.EHZ. 2021-03-03T02:23:57.19 0.6 negative manual P 324 0.4308 92 0.03 46
IV.GUMA.HHZ. 2021-03-03T02:23:57.07 0.3 undecidable manual S 55 0.2014 98 0.26 70
IV.MOMA.HHZ. 2021-03-03T02:23:57.52 1.0 positive manual P 250 0.42 92 0.54 20
IV.MDAR.HNE. 2021-03-03T02:23:57.77 0.3 undecidable manual S 6 0.2473 95 -0.38 68
IV.MML1.HNN. 2021-03-03T02:23:56.44 0.3 undecidable manual S 329 0.1952 98 -0.18 72
IV.ATCC.EHZ. 2021-03-03T02:23:56.86 0.1 undecidable manual P 305 0.4173 92 -0.07 93
IV.MNTT.EHZ. 2021-03-03T02:23:56.72 0.1 undecidable manual P 72 0.3732 92 0.55 84
IV.PF6.EHE. 2021-03-03T02:23:56.30 0.3 undecidable manual S 18 0.2005 98 -0.49 67
IV.CSP1.EHZ. 2021-03-03T02:23:55.34 0.3 undecidable manual S 26 0.161 103 -0.28 70
IV.LNSS.HHZ. 2021-03-03T02:23:55.55 0.1 undecidable manual P 188 0.3471 93 -0.18 92
IV.MMO1.EHZ. 2021-03-03T02:23:55.46 0.3 undecidable manual S 107 0.1655 102 -0.31 69
IV.SMA1.EHZ. 2021-03-03T02:23:55.69 0.1 undecidable manual P 152 0.357 93 -0.2 91
IV.CESI.HHZ. 2021-03-03T02:23:55.66 0.3 undecidable manual S 291 0.161 103 0.03 73
IV.MF5.EHZ. 2021-03-03T02:23:54.49 0.1 undecidable manual P 81 0.259 95 0.27 92
IV.MTRA.EHZ. 2021-03-03T02:23:54.45 0.1 undecidable manual P 132 0.2833 94 -0.18 92
IV.NRCA.HHZ. 2021-03-03T02:23:54.12 0.1 undecidable manual S 178 0.1133 118 -0.18 95
IV.GAVE.EHZ. 2021-03-03T02:23:54.88 0.1 undecidable manual P 212 0.2995 94 -0.03 96
IV.GUMA.HHZ. 2021-03-03T02:23:53.36 0.1 undecidable manual P 55 0.2014 98 0.12 96
IV.PF6.EHE. 2021-03-03T02:23:53.00 0.1 undecidable manual P 18 0.2005 98 -0.23 94
IV.MDAR.HNE. 2021-03-03T02:23:53.73 0.1 undecidable manual P 6 0.2473 95 -0.28 92
IV.FDMO.HHZ. 2021-03-03T02:23:53.48 0.3 undecidable manual S 350 0.0908 128 -0.27 71
IV.MC2.EHN. 2021-03-03T02:23:53.41 0.3 undecidable manual S 121 0.0674 139 0.16 74
IV.MML1.HNN. 2021-03-03T02:23:53.04 0.1 undecidable manual P 329 0.1952 98 -0.09 97
IT.MTCL.HGZ. 2021-03-03T02:23:53.66 0.1 undecidable manual S 300 0.0935 126 -0.15 98
IV.FEMA.HNE. 2021-03-03T02:23:53.03 0.1 undecidable manual S 289 0.0468 151 0.14 98
IV.CSP1.EHZ. 2021-03-03T02:23:52.48 0.1 undecidable manual P 26 0.161 103 -0.08 97
IV.MMO1.EHZ. 2021-03-03T02:23:52.52 0.1 undecidable manual P 107 0.1655 102 -0.12 96
IV.CESI.HHZ. 2021-03-03T02:23:52.63 0.1 undecidable manual P 291 0.161 103 0.07 97
IV.NRCA.HHZ. 2021-03-03T02:23:51.80 0.1 undecidable manual P 178 0.1133 118 0.01 99
IV.FDMO.HHZ. 2021-03-03T02:23:51.46 0.1 positive manual P 350 0.0908 128 -0.02 100
IV.MC2.EHN. 2021-03-03T02:23:51.38 0.1 undecidable manual P 121 0.0674 139 0.2 97
IT.MTCL.HGZ. 2021-03-03T02:23:51.56 0.1 positive manual P 300 0.0935 126 0.05 98
IV.FEMA.HNE. 2021-03-03T02:23:51.17 0.1 undecidable manual P 289 0.0468 151 0.19 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.4 0.0003115 0.18 AML other m 2021-03-03T02:23:53.67
IV.FDMO.HHN. ML:1.7 0.000503 0.22 AML other m 2021-03-03T02:23:53.70
IV.NRCA.HHN. ML:1.8 0.0005685 0.16 AML other m 2021-03-03T02:23:54.22
IV.NRCA.HHE. ML:1.8 0.0005515 0.08 AML other m 2021-03-03T02:23:55.04
IV.CSP1.EHE. ML:1.6 0.0003275 0.28 AML other m 2021-03-03T02:23:55.66
IV.CSP1.EHN. ML:1.8 0.00048 1.06 AML other m 2021-03-03T02:23:55.67
IV.CESI.HHE. ML:1.4 0.000201 1.38 AML other m 2021-03-03T02:23:56.13
IV.CESI.HHN. ML:1.6 0.0002965 0.26 AML other m 2021-03-03T02:23:56.00
IV.GUMA.HHE. ML:1.9 0.000479 0.18 AML other m 2021-03-03T02:23:57.38
IV.GUMA.HHN. ML:1.6 0.0002585 0.56 AML other m 2021-03-03T02:23:58.95
IV.MTRA.EHE. ML:1.4 9.87E-5 0.24 AML other m 2021-03-03T02:23:59.74
IV.MTRA.EHN. ML:1.5 0.000134 0.46 AML other m 2021-03-03T02:24:00.02
IV.GAVE.EHE. ML:1.6 0.0001505 0.42 AML other m 2021-03-03T02:24:00.28
IV.GAVE.EHN. ML:1.5 0.00012665 0.3 AML other m 2021-03-03T02:24:00.29
IV.LNSS.HHN. ML:1 4.145E-5 1.56 AML other m 2021-03-03T02:24:02.99
IV.LNSS.HHE. ML:1.2 5.435E-5 0.9 AML other m 2021-03-03T02:24:02.76
IV.SMA1.EHN. ML:1.2 4.9E-5 1.52 AML other m 2021-03-03T02:24:02.77
IV.SMA1.EHE. ML:1.1 3.84E-5 0.54 AML other m 2021-03-03T02:24:03.00
IV.FOSV.EHE. ML:1 3.205E-5 0.14 AML other m 2021-03-03T02:24:04.39
IV.FOSV.EHN. ML:1.2 3.795E-5 0.24 AML other m 2021-03-03T02:24:04.41
IV.MOMA.HHN. ML:1.2 4.125E-5 0.42 AML other m 2021-03-03T02:24:05.20
IV.MOMA.HHE. ML:1.3 5.595E-5 0.18 AML other m 2021-03-03T02:24:05.39
IV.RM33.EHN. ML:1 2.49E-5 0.3 AML other m 2021-03-03T02:24:05.82
IV.RM33.EHE. ML:1 2.75E-5 1.26 AML other m 2021-03-03T02:24:06.27
IV.TERO.HHE. ML:1 2.71E-5 0.14 AML other m 2021-03-03T02:24:06.79
IV.TERO.HHN. ML:1.2 3.805E-5 1.56 AML other m 2021-03-03T02:24:07.87
IV.MNTT.EHN. ML:1.7 0.0001665 1.24 AML other m 2021-03-03T02:24:07.82
IV.MNTT.EHE. ML:2 0.0003275 1.02 AML other m 2021-03-03T02:24:08.65
IV.SSFR.HHN. ML:1.5 6.83E-5 0.86 AML other m 2021-03-03T02:24:08.15
IV.ARVD.HHE. ML:1 2.005E-5 0.46 AML other m 2021-03-03T02:24:08.67
IV.SSFR.HHE. ML:1.5 6.265E-5 0.18 AML other m 2021-03-03T02:24:08.77
IV.ARVD.HHN. ML:0.9 1.53E-5 0.62 AML other m 2021-03-03T02:24:09.98
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download