Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 04-10-2021 and time 18:08:11 (UTC) in region 5 km S Acquacanina (MC)

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

  • 04-10-2021 18:08:11 (UTC)
  • 04-10-2021 20:08:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9890, 13.1660 at 11 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
Acquacanina MC 5 121 121
Bolognola MC 5 142 263
Ussita MC 5 444 707
Fiastra MC 5 559 1266
Fiordimonte MC 8 202 1468
Visso MC 9 1107 2575
Castelsantangelo sul Nera MC 10 281 2856
Pievebovigliana MC 11 866 3722
Pieve Torina MC 11 1458 5180
Sarnano MC 12 3264 8444
Monte Cavallo MC 13 145 8589
Muccia MC 14 915 9504
Montefortino FM 15 1178 10682
Cessapalombo MC 16 512 11194
Amandola FM 16 3629 14823
Preci PG 16 724 15547
Montemonaco AP 17 604 16151
Gualdo MC 17 815 16966
Caldarola MC 18 1823 18789
Camporotondo di Fiastrone MC 18 563 19352
Camerino MC 18 6974 26326
San Ginesio MC 18 3498 29824
Serravalle di Chienti MC 20 1070 30894

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
64 Km NE of Terni (111501 inhabitants)
65 Km E of Perugia (166134 inhabitants)
73 Km N of L'Aquila (69753 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
96 Km S of Fano (60888 inhabitants)
96 Km NW 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
Bulletin
Rev1000 		ML 1.3 2021-10-04
18:08:11		 42.989 13.1658 11 2022-03-30
13:04:13		 Bollettino Sismico Italiano INGV 96976851
Reviewed
Rev100 		ML 1.6 2021-10-04
18:08:11		 42.9893 13.1668 11 2021-10-04
18:28:49		 Sala Sismica INGV-Roma 96213471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-04 18:08:11 ± 0.04
Latitude 42.9890 ± 0.0027
Longitude 13.1658 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96976851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 280
Semi-minor axis of confidence ellipse (meter) 232
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) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 41
Number of associated phases, regardless of their use for origin computation 65
Number of defining phases 57
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.75363
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 31
Type of magnitude ML
Reference to an origin 96976851
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-25 09:38:10

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 57
Type of magnitude ML
Reference to an origin 96213471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-04 18:28:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHZ. 2021-10-04T18:08:54.58 3.0 undecidable manual S 0.73 0
IT.PLTA.HNZ. 2021-10-04T18:08:39.42 3.0 undecidable manual Pn -0.2 0
IV.ATSC.EHE. 2021-10-04T18:08:31.34 0.6 undecidable manual S 321 61.8936 50 0.6 40
IV.ARVD.HHZ. 2021-10-04T18:08:30.49 0.3 undecidable manual S 342 59.2962 50 0.44 63
IV.ARRO.EHZ. 2021-10-04T18:08:29.67 0.6 undecidable manual S 216 55.8996 50 0.52 42
IV.ATCC.EHZ. 2021-10-04T18:08:27.48 0.3 undecidable manual S 297 47.8188 50 0.49 64
IV.FOSV.EHZ. 2021-10-04T18:08:26.99 0.3 undecidable manual S 316 47.1195 50 0.18 68
IV.NARO.HHZ. 2021-10-04T18:08:26.32 0.6 undecidable manual P 326 83.6496 50 0.28 42
IV.ASSB.HHZ. 2021-10-04T18:08:25.31 0.3 undecidable manual S 278 41.5251 50 -0.01 72
IV.CING.HHZ. 2021-10-04T18:08:25.72 0.3 undecidable manual S 3 42.9237 50 0.04 71
IV.PIEI.HHZ. 2021-10-04T18:08:25.65 3.0 positive manual P -0.07 0
IV.SMA1.EHZ. 2021-10-04T18:08:25.58 0.3 undecidable manual S 161 42.1245 50 0.12 70
IV.OFFI.HHZ. 2021-10-04T18:08:25.76 0.6 undecidable manual S 98 42.624 50 0.16 46
IV.LNSS.HNN. 2021-10-04T18:08:25.81 0.3 undecidable manual S 193 44.0226 50 -0.17 69
IV.GAVE.HNE. 2021-10-04T18:08:24.56 0.3 undecidable manual S 214 39.627 50 -0.25 68
IV.ARRO.EHZ. 2021-10-04T18:08:22.32 0.6 undecidable manual P 216 55.8996 50 0.54 41
IV.MTRA.EHZ. 2021-10-04T18:08:22.54 0.3 undecidable manual S 144 31.8459 50 -0.19 70
IV.MURB.HHZ. 2021-10-04T18:08:22.35 3.0 positive manual P -0.25 0
IV.MNTP.HNZ. 2021-10-04T18:08:22.56 0.6 undecidable manual S 56 29.5482 50 0.44 45
IV.ATSC.EHE. 2021-10-04T18:08:22.82 0.3 undecidable manual P 321 61.8936 50 0.12 67
IV.TERO.HHZ. 2021-10-04T18:08:21.87 3.0 undecidable manual Pg 0.1 0
IV.ARVD.HHZ. 2021-10-04T18:08:21.77 0.3 undecidable manual P 342 59.2962 50 -0.53 62
IV.SSFR.HHZ. 2021-10-04T18:08:21.83 3.0 negative manual P -0.42 0
IV.MF5.EHZ. 2021-10-04T18:08:21.04 0.6 undecidable manual S 90 23.8539 50 0.45 45
IV.OFFI.HHZ. 2021-10-04T18:08:20.28 0.3 undecidable manual P 98 42.624 50 0.55 63
IV.CESI.HHZ. 2021-10-04T18:08:20.03 0.6 undecidable manual S 275 21.2676 50 0.13 48
IV.ATCC.EHZ. 2021-10-04T18:08:20.30 0.3 undecidable manual P 297 47.8188 50 -0.23 68
IV.SAP2.EHZ. 2021-10-04T18:08:20.50 0.6 undecidable manual S 58 22.3554 50 0.31 46
IV.SEF1.HNZ. 2021-10-04T18:08:20.56 0.3 undecidable manual S 315 24.8529 50 -0.3 69
IV.FOSV.EHZ. 2021-10-04T18:08:20.06 0.3 undecidable manual P 316 47.1195 50 -0.37 66
IV.SMA1.EHZ. 2021-10-04T18:08:19.50 0.3 undecidable manual P 161 42.1245 50 -0.15 70
IV.LNSS.HNN. 2021-10-04T18:08:19.66 0.6 undecidable manual P 193 44.0226 50 -0.29 45
IV.ASSB.HHZ. 2021-10-04T18:08:19.32 0.3 undecidable manual P 278 41.5251 50 -0.25 68
IV.CING.HHZ. 2021-10-04T18:08:19.74 0.3 undecidable manual P 3 42.9237 50 -0.04 71
IV.GAVE.HNE. 2021-10-04T18:08:19.50 0.3 undecidable manual P 214 39.627 50 0.23 69
IV.MML1.EHZ. 2021-10-04T18:08:19.68 0.3 undecidable manual S 311 20.9679 50 -0.13 72
IV.SNTG.HHZ. 2021-10-04T18:08:18.18 3.0 undecidable manual Pg -0.12 0
IV.MMO1.EHZ. 2021-10-04T18:08:18.24 0.3 undecidable manual S 127 16.4724 123 -0.3 70
IT.FOPC.HGE. 2021-10-04T18:08:18.79 0.6 undecidable manual P 267 37.629 50 -0.17 47
IV.GUMA.HNZ. 2021-10-04T18:08:18.73 0.6 undecidable manual S 59 15.9729 124 0.32 47
IV.NRCA.HNZ. 2021-10-04T18:08:18.70 0.3 undecidable manual S 194 17.7711 121 -0.23 71
IV.MNTT.EHZ. 2021-10-04T18:08:18.60 3.0 negative manual Pg 0.01 0
IV.PF6.EHZ. 2021-10-04T18:08:18.18 0.3 undecidable manual S 8 16.6722 123 -0.43 68
IV.EL6.EHZ. 2021-10-04T18:08:18.85 0.3 undecidable manual P 352 38.1285 50 -0.18 70
IV.FEMA.HNZ. 2021-10-04T18:08:17.18 0.3 undecidable manual S 252 9.879 138 0.38 70
IV.CSP1.EHZ. 2021-10-04T18:08:17.21 0.3 undecidable manual S 15 11.877 133 -0.07 74
IV.MTRA.EHZ. 2021-10-04T18:08:17.71 0.3 undecidable manual P 144 31.8459 50 -0.36 68
IT.MTCL.HGZ. 2021-10-04T18:08:17.90 0.3 undecidable manual S 272 13.4754 129 0.17 73
IV.MNTP.HNZ. 2021-10-04T18:08:17.84 0.3 undecidable manual P 56 29.5482 50 0.12 71
IV.MC2.EHZ. 2021-10-04T18:08:17.13 0.3 undecidable manual S 168 8.7801 141 0.57 67
IV.SEF1.HNZ. 2021-10-04T18:08:16.77 0.3 undecidable manual P 315 24.8529 50 -0.22 71
IV.MML1.EHZ. 2021-10-04T18:08:16.16 0.1 positive manual P 311 20.9679 50 -0.23 95
IV.MF5.EHZ. 2021-10-04T18:08:16.80 0.1 negative manual P 90 23.8539 50 -0.03 98
IV.CESI.HHZ. 2021-10-04T18:08:16.28 0.1 positive manual P 275 21.2676 50 -0.16 96
IV.FDMO.HHZ. 2021-10-04T18:08:16.64 0.3 undecidable manual S 310 8.2806 143 0.2 73
IV.SAP2.EHZ. 2021-10-04T18:08:16.53 0.3 undecidable manual P 58 22.3554 50 -0.08 73
IT.MTCL.HGZ. 2021-10-04T18:08:15.13 0.1 positive manual P 272 13.4754 129 -0.05 99
IV.NRCA.HNZ. 2021-10-04T18:08:15.66 0.1 positive manual P 194 17.7711 121 -0.22 95
IV.PF6.EHZ. 2021-10-04T18:08:15.35 0.3 undecidable manual P 8 16.6722 123 -0.34 70
IV.MMO1.EHZ. 2021-10-04T18:08:15.40 0.1 negative manual P 127 16.4724 123 -0.26 95
IV.GUMA.HNZ. 2021-10-04T18:08:15.55 0.1 negative manual P 59 15.9729 124 -0.03 99
IV.FDMO.HHZ. 2021-10-04T18:08:14.52 0.1 positive manual P 310 8.2806 143 0.08 100
IV.MC2.EHZ. 2021-10-04T18:08:14.76 0.1 negative manual P 168 8.7801 141 0.25 96
IV.FEMA.HNZ. 2021-10-04T18:08:14.85 0.1 positive manual P 252 9.879 138 0.2 97
IV.CSP1.EHZ. 2021-10-04T18:08:14.89 0.1 negative manual P 15 11.877 133 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.6 0.0002585797 0.2048 AML other m 2021-10-04T18:08:20.97
IV.CESI.HNN. ML:1.6 0.0002581518 0.2176 AML other m 2021-10-04T18:08:20.98
IV.CESI.HHE. ML:1.6 0.00024249999999999999 0.16 AML other m 2021-10-04T18:08:20.91
IV.CESI.HNE. ML:1.5 0.0002255274 0.1664 AML other m 2021-10-04T18:08:20.99
IV.MTRA.HNE. ML:1.6 0.00018281730000000002 0.1792 AML other m 2021-10-04T18:08:22.94
IV.MTRA.EHE. ML:1.6 0.00018746679999999999 0.1792 AML other m 2021-10-04T18:08:22.85
IV.MTRA.EHN. ML:1.5 0.00014010925499999998 0.1664 AML other m 2021-10-04T18:08:22.85
IV.MTRA.HNN. ML:1.4 0.000124585155 0.1152 AML other m 2021-10-04T18:08:23.36
IV.SNTG.HHE. ML:1.3 0.00007713651 0.1024 AML other m 2021-10-04T18:08:24.44
IV.SNTG.HNE. ML:1.3 0.00008640489 0.0896 AML other m 2021-10-04T18:08:24.44
IV.SNTG.HHN. ML:1.2 0.000060292760000000004 0.0896 AML other m 2021-10-04T18:08:24.45
IV.SNTG.HNN. ML:1.2 0.000059124164999999996 0.1024 AML other m 2021-10-04T18:08:24.76
IV.EL6.EHN. ML:1.4 0.00009368131000000001 0.1024 AML other m 2021-10-04T18:08:25.65
IV.SMA1.EHN. ML:1.3 0.00006507777500000001 0.1024 AML other m 2021-10-04T18:08:26.14
IV.EL6.EHE. ML:1.5 0.00010635923999999999 0.2816 AML other m 2021-10-04T18:08:26.37
IV.CING.HHN. ML:1.2 0.00004433566 0.0896 AML other m 2021-10-04T18:08:26.46
IV.SMA1.EHE. ML:1.2 0.000055266085 0.1664 AML other m 2021-10-04T18:08:26.76
IV.CING.HHE. ML:1.2 0.000044337965 0.1152 AML other m 2021-10-04T18:08:27.33
IV.FOSV.EHN. ML:1.6 0.0001215 0.32 AML other m 2021-10-04T18:08:27.25
IV.FOSV.EHE. ML:1.5 0.00008535 0.16 AML other m 2021-10-04T18:08:27.47
IV.ATCC.EHN. ML:1.3 0.000057830899999999995 0.1664 AML other m 2021-10-04T18:08:27.83
IV.ATCC.EHE. ML:1.4 0.00007319785500000001 0.128 AML other m 2021-10-04T18:08:28.29
IV.TERO.HHN. ML:1.5 0.00007162311 0.1408 AML other m 2021-10-04T18:08:30.40
IV.ARVD.HHN. ML:0.9 0.000016596312 0.1024 AML other m 2021-10-04T18:08:31.56
IV.ARRO.EHN. ML:1.0 0.000026630815000000004 0.1664 AML other m 2021-10-04T18:08:31.63
IV.ARVD.HHE. ML:1.1 0.000025505690999999997 1.8592 AML other m 2021-10-04T18:08:32.96
IV.ARRO.EHE. ML:1.2 0.00003514996 1.808 AML other m 2021-10-04T18:08:32.99
IV.PIEI.HHN. ML:1.0 0.00001629699 0.2176 AML other m 2021-10-04T18:08:37.40
IV.PIEI.HHE. ML:1.2 0.000027458727499999997 1.7312 AML other m 2021-10-04T18:08:38.88
IV.NARO.HHE. ML:1.1 0.00001266070595 0.1664 AML other m 2021-10-04T18:08:38.00
IV.NARO.HHN. ML:1.1 0.000013003255 0.1536 AML other m 2021-10-04T18:08:39.64
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