Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 30-09-2021 and time 04:29:48 (UTC) in region 5 km W Visso (MC)

A magnitude ML 1.3 earthquake occured in region: 5 km W Visso (MC), on

  • 30-09-2021 04:29:48 (UTC)
  • 30-09-2021 06:29:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9520, 13.0390 at 13 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
Visso MC 5 1107 1107
Monte Cavallo MC 6 145 1252
Preci PG 8 724 1976
Ussita MC 8 444 2420
Pieve Torina MC 10 1458 3878
Fiordimonte MC 10 202 4080
Castelsantangelo sul Nera MC 11 281 4361
Sellano PG 11 1079 5440
Pievebovigliana MC 13 866 6306
Fiastra MC 13 559 6865
Acquacanina MC 14 121 6986
Muccia MC 15 915 7901
Serravalle di Chienti MC 15 1070 8971
Bolognola MC 16 142 9113
Cerreto di Spoleto PG 18 1075 10188
Norcia PG 18 4957 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Foligno (57155 inhabitants)
54 Km NE of Terni (111501 inhabitants)
56 Km E of Perugia (166134 inhabitants)
63 Km NW of Teramo (54892 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
97 Km NE of Viterbo (67173 inhabitants)
99 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 1.3 2021-09-30
04:29:48		 42.9522 13.0393 13 2022-03-30
13:04:10		 Bollettino Sismico Italiano INGV 96314711
Reviewed
Rev100 		ML 1.4 2021-09-30
04:29:48		 42.9478 13.0425 12 2021-09-30
04:43:07		 Sala Sismica INGV-Roma 96051161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-30 04:29:48 ± 0.06
Latitude 42.9522 ± 0.0027
Longitude 13.0393 ± 0.0049
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96314711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 345
Semi-minor axis of confidence ellipse (meter) 149
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 257
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 54
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37951
Number of stations at which the event was observed 39
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 96314711
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-07 10:22:01

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 96051161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-30 04:43:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ESCV.HHZ. 2021-09-30T04:31:13.73 3.0 positive manual Pg 13.68 0
OT.OT14.EHZ. 2021-09-30T04:31:10.09 3.0 undecidable manual Sn 5.08 0
IV.MTGR.HHZ. 2021-09-30T04:31:10.27 3.0 undecidable manual Pg 18.09 0
IV.CAGR.HHZ. 2021-09-30T04:31:02.81 3.0 undecidable manual Pn 2.39 0
IV.CRJA.HHZ. 2021-09-30T04:31:00.87 3.0 undecidable manual Pn 7.03 0
CR.STON.BHZ. 2021-09-30T04:30:52.86 3.0 negative manual Pg 14.79 0
OT.OT15.EHZ. 2021-09-30T04:30:52.26 3.0 negative manual Pg 14.14 0
CR.ZAG.BHZ. 2021-09-30T04:30:48.72 3.0 undecidable manual Pg 16.57 0
IV.TST02.HHZ. 2021-09-30T04:30:40.32 3.0 undecidable manual Sn 0.53 0
OX.PLRO.HHZ. 2021-09-30T04:30:38.16 3.0 positive manual Pg 13.64 0
OX.MARN.HHZ. 2021-09-30T04:30:37.64 3.0 undecidable manual Sn -2.63 0
IV.FVI.HHZ. 2021-09-30T04:30:36.48 3.0 undecidable manual Pg 12.27 0
IV.MSSA.HHZ. 2021-09-30T04:30:36.09 3.0 undecidable manual Sg 7.78 0
IV.SACR.HHZ. 2021-09-30T04:30:26.50 3.0 positive manual Pg 9.01 0
OX.SABO.HHZ. 2021-09-30T04:30:23.14 3.0 undecidable manual Pn 3.96 0
OX.MPRI.HHZ. 2021-09-30T04:30:22.71 3.0 undecidable manual Pn 2.68 0
IV.SGG.HHZ. 2021-09-30T04:30:21.73 3.0 undecidable manual Pg 6.61 0
IV.EUCT.HNZ. 2021-09-30T04:30:15.30 3.0 positive manual Pn 1.18 0
IV.ZCCA.HHZ. 2021-09-30T04:30:14.04 3.0 undecidable manual S 2.84 0
GU.GRAM.HHZ. 2021-09-30T04:30:09.16 3.0 undecidable manual Pg 8.38 0
IV.MOMA.HNZ. 2021-09-30T04:30:02.09 0.6 undecidable manual S 247 41.5251 94 0.37 44
IV.EL6.EHZ. 2021-09-30T04:30:02.02 0.3 undecidable manual S 7 42.1245 94 0.14 69
IV.RCAV.EHZ. 2021-09-30T04:30:02.30 3.0 undecidable manual Pn 1.47 0
IV.LNSS.HNZ. 2021-09-30T04:30:01.32 0.6 undecidable manual S 180 38.7279 95 0.34 44
IV.SNTG.HHE. 2021-09-30T04:30:00.12 0.3 undecidable manual S 347 34.5432 96 0.27 68
IV.GAVE.EHN. 2021-09-30T04:29:59.04 0.1 undecidable manual S 202 31.1466 97 0.08 47
IV.ASSB.HHZ. 2021-09-30T04:29:59.16 0.6 undecidable manual S 288 32.4453 97 -0.15 47
IV.MMO1.EHZ. 2021-09-30T04:29:57.04 0.1 undecidable manual S 104 24.0537 101 -0.05 72
IV.PF6.EHN. 2021-09-30T04:29:56.86 0.6 undecidable manual S 31 24.1536 101 -0.25 46
IV.CSP1.EHZ. 2021-09-30T04:29:56.15 0.3 undecidable manual S 41 20.4684 105 -0.01 73
IV.EL6.EHZ. 2021-09-30T04:29:56.29 0.6 undecidable manual P 7 42.1245 94 0.21 45
IV.LNSS.HNZ. 2021-09-30T04:29:55.39 0.1 undecidable manual P 180 38.7279 95 -0.17 92
GU.GSCL.HHZ. 2021-09-30T04:29:55.32 3.0 undecidable manual P -0.62 0
IV.MOMA.HNZ. 2021-09-30T04:29:55.72 0.3 undecidable manual P 247 41.5251 94 -0.26 67
IV.MML1.HNE. 2021-09-30T04:29:55.76 0.6 undecidable manual S 343 18.6702 108 0.05 49
IV.ASSB.HHZ. 2021-09-30T04:29:54.60 0.6 undecidable manual P 288 32.4453 97 0.01 48
IV.NRCA.HHZ. 2021-09-30T04:29:54.43 0.3 undecidable manual S 155 14.4744 118 -0.24 71
IV.SNTG.HHE. 2021-09-30T04:29:54.77 0.1 undecidable manual P 347 34.5432 96 -0.14 93
IV.CESI.HHZ. 2021-09-30T04:29:54.28 0.3 undecidable manual S 298 12.3765 124 0.09 73
IV.MC2.EHZ. 2021-09-30T04:29:54.46 0.3 undecidable manual S 110 12.9759 122 0.15 72
IV.GAVE.EHN. 2021-09-30T04:29:54.09 0.1 undecidable manual P 202 31.1466 97 -0.3 91
IV.MMO1.EHZ. 2021-09-30T04:29:53.39 0.3 undecidable manual P 104 24.0537 101 0.08 72
IV.PF6.EHN. 2021-09-30T04:29:53.05 0.3 undecidable manual P 31 24.1536 101 -0.27 69
IV.FDMO.HHZ. 2021-09-30T04:29:53.43 0.1 undecidable manual S 23 10.0788 132 -0.28 94
IV.MML1.HNE. 2021-09-30T04:29:52.64 0.1 undecidable manual P 343 18.6702 108 0.13 96
IV.CSP1.EHZ. 2021-09-30T04:29:52.96 0.1 undecidable manual P 41 20.4684 105 0.19 95
IT.MTCL.HGZ. 2021-09-30T04:29:52.50 0.6 undecidable manual S 325 5.6943 151 -0.46 46
IV.FDMO.HHZ. 2021-09-30T04:29:51.49 0.1 undecidable manual P 23 10.0788 132 0.13 97
IV.MC2.EHZ. 2021-09-30T04:29:51.91 0.1 undecidable manual P 110 12.9759 122 0.2 96
IV.RIBO.EHZ.01 2021-09-30T04:29:51.67 3.0 undecidable manual S -1.36 0
IV.NRCA.HHZ. 2021-09-30T04:29:51.94 0.1 undecidable manual P 155 14.4744 118 0.03 99
IV.CESI.HHZ. 2021-09-30T04:29:51.86 0.1 undecidable manual P 298 12.3765 124 0.23 95
GU.POPM.HHZ. 2021-09-30T04:29:51.72 3.0 positive manual P 0.07 0
IT.MTCL.HGZ. 2021-09-30T04:29:50.89 0.1 undecidable manual P 325 5.6943 151 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.4 0.000241 0.12 AML other m 2021-09-30T04:29:53.78
IV.FDMO.HHN. ML:1.1 0.000123 1.28 AML other m 2021-09-30T04:29:54.85
IV.CESI.HHE. ML:1.2 0.000148 0.24 AML other m 2021-09-30T04:29:54.52
IV.CESI.HHN. ML:1.4 0.000263 0.12 AML other m 2021-09-30T04:29:54.52
IV.CSP1.EHN. ML:1.5 0.000191 0.12 AML other m 2021-09-30T04:29:56.60
IV.CSP1.EHE. ML:1.6 0.0002395 1.6 AML other m 2021-09-30T04:29:57.05
IV.ASSB.HHN. ML:1.1 0.00004765 0.4 AML other m 2021-09-30T04:29:59.85
IV.ASSB.HHE. ML:1.1 0.00005155 0.32 AML other m 2021-09-30T04:29:59.71
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