Earthquake with magnitude of ML 1.3 on date 03-09-2021 and time 09:53:04 (Italy) in region 4 km W Visso (MC)

A magnitude ML 1.3 earthquake occured in region: 4 km W Visso (MC), on

  • 03-09-2021 07:53:04 (UTC)
  • 03-09-2021 09:53:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.933, 13.039 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.

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 4 1107 1107
Preci PG 6 724 1831
Monte Cavallo MC 8 145 1976
Ussita MC 8 444 2420
Castelsantangelo sul Nera MC 10 281 2701
Sellano PG 10 1079 3780
Fiordimonte MC 12 202 3982
Pieve Torina MC 13 1458 5440
Pievebovigliana MC 15 866 6306
Fiastra MC 15 559 6865
Acquacanina MC 16 121 6986
Cerreto di Spoleto PG 16 1075 8061
Norcia PG 16 4957 13018
Muccia MC 17 915 13933
Bolognola MC 17 142 14075
Serravalle di Chienti MC 17 1070 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Foligno (57155 inhabitants)
52 Km NE of Terni (111501 inhabitants)
56 Km E of Perugia (166134 inhabitants)
62 Km W of Teramo (54892 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
95 Km NE of Viterbo (67173 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.3 2021-09-03
07:53:04
42.9332 13.0393 11 2021-09-03
08:02:56
Sala Sismica INGV-Roma 94991241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-03 07:53:04 ± 0.05
Latitude 42.9332 ± 0.0027
Longitude 13.0393 ± 0.0049
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 94991241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 379
Semi-minor axis of confidence ellipse (meter) 323
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 54
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.36692
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 94991241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-03 08:02:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MOMA.HHZ. 2021-09-03T07:53:18.23 0.6 undecidable manual S 250 0.3669 50 0.18 46
IV.GAVE.EHZ. 2021-09-03T07:53:14.74 0.3 undecidable manual S 204 0.2635 50 -0.23 70
IV.TERO.HHZ. 2021-09-03T07:53:14.68 3.0 undecidable manual P -0.66 0
IV.CSP1.EHZ. 2021-09-03T07:53:13.03 0.3 undecidable manual S 37 0.1996 50 -0.06 74
IV.MMO1.EHZ. 2021-09-03T07:53:13.36 0.3 undecidable manual S 99 0.2131 50 -0.13 72
IV.MML1.EHZ. 2021-09-03T07:53:12.63 0.3 undecidable manual S 345 0.1871 50 -0.09 73
IV.MOMA.HHZ. 2021-09-03T07:53:12.98 0.3 undecidable manual P 250 0.3669 50 0.58 63
IV.MF5.EHZ. 2021-09-03T07:53:12.27 3.0 negative manual P 0.64 0
IV.MC2.EHZ. 2021-09-03T07:53:10.71 0.3 undecidable manual S 101 0.1115 131 0.32 71
IV.NRCA.HHZ. 2021-09-03T07:53:10.17 0.3 undecidable manual S 151 0.1133 131 -0.28 71
IV.GAVE.EHZ. 2021-09-03T07:53:10.51 0.6 undecidable manual P 204 0.2635 50 -0.11 48
IV.FDMO.HHZ. 2021-09-03T07:53:10.32 0.3 undecidable manual S 19 0.1088 132 0 76
IV.CESI.HHZ. 2021-09-03T07:53:10.69 0.3 undecidable manual S 306 0.1223 129 0 75
IV.MMO1.EHZ. 2021-09-03T07:53:09.68 0.1 undecidable manual P 99 0.2131 50 -0.08 97
IV.MML1.EHZ. 2021-09-03T07:53:09.25 0.3 undecidable manual P 345 0.1871 50 -0.07 74
IV.CSP1.EHZ. 2021-09-03T07:53:09.57 0.1 undecidable manual P 37 0.1996 50 0.04 98
IT.MTCL.HGZ. 2021-09-03T07:53:08.93 0.1 undecidable manual S 334 0.0674 145 -0.32 95
IV.CESI.HHZ. 2021-09-03T07:53:08.17 0.3 undecidable manual P 306 0.1223 129 0.02 75
IV.MC2.EHZ. 2021-09-03T07:53:08.22 0.1 undecidable manual P 101 0.1115 131 0.25 96
IV.FDMO.HHZ. 2021-09-03T07:53:08.00 0.1 undecidable manual P 19 0.1088 132 0.07 100
IT.MTCL.HGZ. 2021-09-03T07:53:07.40 0.1 undecidable manual P 334 0.0674 145 0.09 100
IV.NRCA.HHZ. 2021-09-03T07:53:07.94 0.1 undecidable manual P 151 0.1133 131 -0.07 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:1.9 0.0008105 0.1 AML other m 2021-09-03T07:53:10.26
IV.NRCA.HHN. ML:1.9 0.000869 0.1 AML other m 2021-09-03T07:53:10.26
IV.NRCA.HHE. ML:1.6 0.000395 0.18 AML other m 2021-09-03T07:53:10.23
IV.NRCA.HNE. ML:1.5 0.000356 0.56 AML other m 2021-09-03T07:53:10.23
IV.FDMO.HHE. ML:1.4 0.0002675 0.12 AML other m 2021-09-03T07:53:10.57
IV.CESI.HHE. ML:1.3 0.000219 1.36 AML other m 2021-09-03T07:53:10.04
IV.FDMO.HHN. ML:1.1 0.00013 0.3 AML other m 2021-09-03T07:53:10.77
IV.CESI.HHN. ML:1.6 0.0004105 1.78 AML other m 2021-09-03T07:53:10.91
IV.MML1.EHN. ML:1.1 9.045E-5 0.14 AML other m 2021-09-03T07:53:12.98
IV.CSP1.EHN. ML:1.4 0.0001705 0.34 AML other m 2021-09-03T07:53:13.26
IV.MML1.EHE. ML:1 7.2E-5 0.74 AML other m 2021-09-03T07:53:13.81
IV.CSP1.EHE. ML:1.4 0.0001695 1.64 AML other m 2021-09-03T07:53:13.16
IV.GAVE.EHE. ML:1.2 7.205E-5 0.16 AML other m 2021-09-03T07:53:15.21
IV.GAVE.EHN. ML:1 5.53E-5 0.34 AML other m 2021-09-03T07:53:16.30
IV.MOMA.HHE. ML:1.1 3.91E-5 0.58 AML other m 2021-09-03T07:53:19.69
IV.MOMA.HHN. ML:1.1 3.795E-5 0.32 AML other m 2021-09-03T07:53:20.50
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