Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 01-10-2021 and time 03:36:01 (Italy) in region 4 km E San Severino Marche (MC)

A magnitude ML 1.9 earthquake occured in region: 4 km E San Severino Marche (MC), on

  • 01-10-2021 01:36:01 (UTC)
  • 01-10-2021 03:36:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2260, 13.2280 at 19 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
San Severino Marche MC 4 12726 12726
Tolentino MC 5 20069 32795
Serrapetrona MC 6 966 33761
Belforte del Chienti MC 7 1886 35647
Caldarola MC 10 1823 37470
Pollenza MC 11 6618 44088
Camporotondo di Fiastrone MC 11 563 44651
Treia MC 12 9403 54054
Urbisaglia MC 13 2628 56682
Colmurano MC 13 1263 57945
Gagliole MC 13 620 58565
Cessapalombo MC 13 512 59077
Castelraimondo MC 14 4587 63664
Ripe San Ginesio MC 15 852 64516
San Ginesio MC 15 3498 68014
Camerino MC 16 6974 74988
Cingoli MC 17 10352 85340
Loro Piceno MC 17 2401 87741
Matelica MC 18 9981 97722
Appignano MC 18 4213 101935
Petriolo MC 19 1998 103933
Sant'Angelo in Pontano MC 20 1436 105369
Gualdo MC 20 815 106184

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km SW of Ancona (100861 inhabitants)
52 Km NE of Foligno (57155 inhabitants)
69 Km E of Perugia (166134 inhabitants)
71 Km S of Fano (60888 inhabitants)
74 Km NW of Teramo (54892 inhabitants)
80 Km SE of Pesaro (94582 inhabitants)
88 Km NE of Terni (111501 inhabitants)
98 Km N of L'Aquila (69753 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 1.9 2021-10-01
01:36:01		 43.2265 13.2277 19 2022-03-30
13:04:19		 Bollettino Sismico Italiano INGV 97974151
Reviewed
Rev100 		ML 1.9 2021-10-01
01:36:01		 43.2315 13.2157 20 2021-10-01
01:45:49		 Sala Sismica INGV-Roma 96085141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-01 01:36:01 ± 0.1
Latitude 43.2265 ± 0.0036
Longitude 13.2277 ± 0.0049
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97974151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 437
Semi-minor axis of confidence ellipse (meter) 184
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 234
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 65
Number of defining phases 56
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.71676
Number of stations at which the event was observed 43
Number of stations from which data was used for origin computation 35
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 50
Type of magnitude ML
Reference to an origin 96085141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-01 01:45:49

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 52
Type of magnitude ML
Reference to an origin 97974151
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-30 14:13:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIR.HHZ. 2021-10-01T01:36:53.44 3.0 undecidable manual Sg 1.41 0
IV.SGRT.HHZ. 2021-10-01T01:36:45.51 3.0 negative manual Pg 5.97 0
OT.OT17.EHZ. 2021-10-01T01:36:38.10 3.0 positive manual Pn 0.86 0
IV.MOMA.HHZ. 2021-10-01T01:36:24.00 0.3 undecidable manual S 229 70.9734 98 0.71 57
IV.TERO.HNZ. 2021-10-01T01:36:21.88 3.0 undecidable manual S -1.69 0
IV.ASSB.HHZ. 2021-10-01T01:36:18.19 0.3 undecidable manual S 246 50.4162 102 0.33 66
IV.ATCC.EHZ. 2021-10-01T01:36:17.85 0.3 undecidable manual S 265 47.7189 103 0.68 59
IV.PE3.EHZ. 2021-10-01T01:36:15.99 3.0 positive manual P -0.68 0
IV.RM33.EHZ. 2021-10-01T01:36:15.29 0.3 undecidable manual P 181 79.5648 97 -0.2 64
IV.FOSV.EHZ. 2021-10-01T01:36:15.08 0.3 undecidable manual S 282 38.4282 107 0.31 67
IV.MMO1.EHZ. 2021-10-01T01:36:14.52 0.1 undecidable manual S 167 37.1295 108 0.07 97
IV.CESI.HHZ. 2021-10-01T01:36:14.49 0.1 undecidable manual S 227 35.9418 109 0.37 90
IV.MF5.EHZ. 2021-10-01T01:36:14.16 0.3 undecidable manual S 145 32.4453 111 0.89 58
IV.ARVD.HHZ. 2021-10-01T01:36:14.85 0.3 undecidable manual S 323 37.9287 107 0.2 69
IV.MOMA.HHZ. 2021-10-01T01:36:14.02 0.3 undecidable manual P 229 70.9734 98 -0.15 66
IV.MC2.EHZ. 2021-10-01T01:36:14.20 0.3 undecidable manual S 185 35.1426 109 0.28 70
IV.APEC.HHZ. 2021-10-01T01:36:14.98 0.6 undecidable manual P 300 74.7696 97 0.23 43
IV.LNSS.HHZ. 2021-10-01T01:36:13.95 0.3 undecidable manual P 192 70.8735 98 -0.2 65
IV.SMA1.EHZ. 2021-10-01T01:36:13.03 0.3 undecidable manual P 172 66.6777 99 -0.49 61
IV.GAVE.EHZ. 2021-10-01T01:36:13.18 3.0 positive manual P 0.89 0
IV.NARO.HHZ. 2021-10-01T01:36:13.55 3.0 positive manual P -1.21 0
IV.PIEI.HHZ. 2021-10-01T01:36:13.38 3.0 positive manual P -0.98 0
IV.MPAG.EHZ. 2021-10-01T01:36:12.17 0.6 undecidable manual P 320 58.497 100 -0.09 46
IV.TERO.HHZ. 2021-10-01T01:36:12.46 3.0 undecidable manual P -0.96 0
IV.MML1.EHZ. 2021-10-01T01:36:11.55 0.1 undecidable manual S 239 24.1536 120 0.28 93
IV.COR1.EHZ. 2021-10-01T01:36:11.26 0.3 undecidable manual P 338 48.5181 103 0.5 64
IV.SNTG.HHZ. 2021-10-01T01:36:11.20 0.1 undecidable manual S 278 23.3544 121 0.12 96
IV.OFFI.HHZ. 2021-10-01T01:36:11.77 0.3 undecidable manual P 131 49.2174 102 0.9 56
IV.MTRA.EHZ. 2021-10-01T01:36:11.17 0.3 undecidable manual P 165 53.9016 101 -0.4 64
IV.FDMO.HHZ. 2021-10-01T01:36:11.05 0.1 undecidable manual S 208 23.9538 120 -0.16 96
IV.FRON.EHZ. 2021-10-01T01:36:11.28 0.3 undecidable manual P 309 51.8037 102 0.03 70
IV.MNTP.HNZ. 2021-10-01T01:36:11.48 0.6 undecidable manual S 117 21.867 123 0.74 42
IV.SAP2.EHZ. 2021-10-01T01:36:10.68 0.3 undecidable manual S 136 19.9689 126 0.36 70
IV.SSFR.HHZ. 2021-10-01T01:36:10.11 0.3 undecidable manual P 303 42.8238 105 0.2 69
IV.ASSB.HHZ. 2021-10-01T01:36:10.76 0.1 positive manual P 246 50.4162 102 -0.28 90
IV.GUMA.HHZ. 2021-10-01T01:36:10.65 0.1 undecidable manual S 154 20.1687 126 0.29 95
IV.ATCC.EHZ. 2021-10-01T01:36:10.61 0.3 undecidable manual P 265 47.7189 103 -0.03 71
IV.CSP1.EHZ. 2021-10-01T01:36:09.19 0.1 undecidable manual S 187 15.0738 135 -0.13 98
IV.PP3.EHZ. 2021-10-01T01:36:09.24 0.6 undecidable manual P 61 35.1426 109 0.47 44
IV.FOSV.EHZ. 2021-10-01T01:36:09.06 0.1 positive manual P 282 38.4282 107 -0.2 94
IV.CING.HHZ. 2021-10-01T01:36:09.44 0.1 undecidable manual S 351 16.7721 132 -0.2 98
IV.MNTT.EHZ. 2021-10-01T01:36:09.11 0.1 undecidable manual P 121 34.9428 109 0.37 91
IV.EL6.EHZ. 2021-10-01T01:36:09.33 0.1 undecidable manual S 318 15.2736 135 -0.03 100
IV.NRCA.HHZ. 2021-10-01T01:36:09.82 0.3 undecidable manual P 192 44.5221 104 -0.34 66
IV.MC2.EHZ. 2021-10-01T01:36:08.54 0.1 negative manual P 185 35.1426 109 -0.23 92
IV.PF6.EHN. 2021-10-01T01:36:08.15 0.1 undecidable manual S 195 10.1787 147 -0.36 95
IV.MMO1.EHZ. 2021-10-01T01:36:08.65 0.1 negative manual P 167 37.1295 108 -0.42 88
IV.MDAR.HNZ. 2021-10-01T01:36:08.02 0.1 undecidable manual S 241 7.7811 154 -0.18 100
IV.CESI.HHZ. 2021-10-01T01:36:08.75 0.1 positive manual P 227 35.9418 109 -0.14 95
IV.TRE1.HNE. 2021-10-01T01:36:08.75 0.3 undecidable manual S 36 11.6772 144 0.02 75
IV.MF5.EHZ. 2021-10-01T01:36:08.52 0.1 negative manual P 145 32.4453 111 0.13 96
IV.ARVD.HHZ. 2021-10-01T01:36:08.93 0.1 undecidable manual P 323 37.9287 107 -0.25 93
IV.MMUR.HNE. 2021-10-01T01:36:08.10 0.6 undecidable manual P 322 30.2475 113 0.03 49
IV.MML1.EHZ. 2021-10-01T01:36:07.12 0.1 positive manual P 239 24.1536 120 -0.11 97
IV.GUMA.HHZ. 2021-10-01T01:36:06.64 0.1 undecidable manual P 154 20.1687 126 -0.07 98
IV.MNTP.HNZ. 2021-10-01T01:36:06.98 0.1 undecidable manual P 117 21.867 123 0.05 100
IV.SAP2.EHZ. 2021-10-01T01:36:06.67 0.3 undecidable manual P 136 19.9689 126 -0.02 74
IV.CING.HHZ. 2021-10-01T01:36:06.00 0.1 negative manual P 351 16.7721 132 -0.3 95
IV.SNTG.HHZ. 2021-10-01T01:36:06.91 0.1 positive manual P 278 23.3544 121 -0.22 96
IV.EL6.EHZ. 2021-10-01T01:36:06.02 0.1 undecidable manual P 318 15.2736 135 -0.12 99
IV.FDMO.HHZ. 2021-10-01T01:36:06.93 0.1 positive manual P 208 23.9538 120 -0.27 94
IV.TRE1.HNE. 2021-10-01T01:36:05.72 0.3 undecidable manual P 36 11.6772 144 -0.05 76
IV.CSP1.EHZ. 2021-10-01T01:36:05.95 0.1 undecidable manual P 187 15.0738 135 -0.16 97
IV.PF6.EHN. 2021-10-01T01:36:05.29 0.1 positive manual P 195 10.1787 147 -0.35 95
IV.MDAR.HNZ. 2021-10-01T01:36:05.21 0.1 positive manual P 241 7.7811 154 -0.25 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CING.HHN. ML:2.1 0.0007735000000000001 0.26 AML other m 2021-10-01T01:36:09.60
IV.EL6.EHE. ML:2.3 0.0012 0.24 AML other m 2021-10-01T01:36:09.52
IV.CING.HHE. ML:1.9 0.0005349999999999999 0.26 AML other m 2021-10-01T01:36:09.79
IV.EL6.EHN. ML:2.3 0.0013900000000000002 0.52 AML other m 2021-10-01T01:36:09.67
IV.GUMA.HHE. ML:2.0 0.0005765 0.38 AML other m 2021-10-01T01:36:10.98
IV.GUMA.HNE. ML:1.7 0.0003035 1.54 AML other m 2021-10-01T01:36:10.08
IV.GUMA.HHN. ML:1.9 0.0004115 0.26 AML other m 2021-10-01T01:36:10.93
IV.GUMA.HNN. ML:2.0 0.0006020000000000001 0.4 AML other m 2021-10-01T01:36:10.99
IV.FDMO.HHE. ML:2.1 0.0006945 0.22 AML other m 2021-10-01T01:36:11.17
IV.FDMO.HHN. ML:1.9 0.000371 0.12 AML other m 2021-10-01T01:36:11.23
IV.SNTG.HHN. ML:2.1 0.0007095000000000001 0.18 AML other m 2021-10-01T01:36:11.35
IV.SNTG.HNN. ML:2.1 0.0007135 0.2 AML other m 2021-10-01T01:36:11.36
IV.SNTG.HHE. ML:1.8 0.00028700000000000004 0.56 AML other m 2021-10-01T01:36:11.65
IV.MML1.EHE. ML:1.6 0.0002145 0.22 AML other m 2021-10-01T01:36:11.71
IV.MML1.EHN. ML:1.7 0.0002565 1.32 AML other m 2021-10-01T01:36:11.04
IV.SNTG.HNE. ML:1.7 0.00026900000000000003 0.56 AML other m 2021-10-01T01:36:12.65
IV.CESI.HHN. ML:2.0 0.0003695 0.14 AML other m 2021-10-01T01:36:14.61
IV.CESI.HHE. ML:2.0 0.0003795 0.18 AML other m 2021-10-01T01:36:14.72
IV.FOSV.EHN. ML:1.7 0.0001595 0.72 AML other m 2021-10-01T01:36:15.56
IV.FOSV.EHE. ML:1.6 0.0001315 0.38 AML other m 2021-10-01T01:36:16.06
IV.MNTT.EHE. ML:2.6 0.00135 0.24 AML other m 2021-10-01T01:36:16.61
IV.SSFR.HNE. ML:2.0 0.00029299999999999997 1.18 AML other m 2021-10-01T01:36:16.02
IV.MNTT.EHN. ML:2.4 0.0010270000000000001 1.32 AML other m 2021-10-01T01:36:16.01
IV.SSFR.HHE. ML:1.9 0.00023649999999999998 0.48 AML other m 2021-10-01T01:36:17.09
IV.NRCA.HHE. ML:2.0 0.000314 0.9 AML other m 2021-10-01T01:36:17.60
IV.ARVD.HHE. ML:1.4 0.00008075 0.5 AML other m 2021-10-01T01:36:17.35
IV.ARVD.HHN. ML:1.4 0.00007925 0.52 AML other m 2021-10-01T01:36:17.61
IV.ATCC.EHE. ML:1.7 0.0001275 0.28 AML other m 2021-10-01T01:36:18.11
IV.ATCC.EHN. ML:1.8 0.0001455 0.42 AML other m 2021-10-01T01:36:18.12
IV.SSFR.HNN. ML:2.1 0.000336 0.24 AML other m 2021-10-01T01:36:18.91
IV.ASSB.HHN. ML:1.8 0.0001605 0.4 AML other m 2021-10-01T01:36:19.63
IV.NRCA.HHN. ML:2.0 0.00027100000000000003 0.12 AML other m 2021-10-01T01:36:19.58
IV.FRON.EHE. ML:1.5 0.00006975 0.26 AML other m 2021-10-01T01:36:19.79
IV.ASSB.HHE. ML:1.8 0.000141 0.78 AML other m 2021-10-01T01:36:19.97
IV.FRON.EHN. ML:1.8 0.000149 0.76 AML other m 2021-10-01T01:36:20.04
IV.MTRA.EHE. ML:1.6 0.00008695 0.56 AML other m 2021-10-01T01:36:20.05
IV.SSFR.HHN. ML:1.9 0.0002495 0.78 AML other m 2021-10-01T01:36:20.46
IV.MTRA.EHN. ML:1.6 0.0000899 0.72 AML other m 2021-10-01T01:36:22.50
IV.OFFI.HHE. ML:2.2 0.0003715 0.42 AML other m 2021-10-01T01:36:22.87
IV.OFFI.HHN. ML:2.1 0.0003265 0.48 AML other m 2021-10-01T01:36:22.92
IV.SMA1.EHN. ML:1.6 0.0000699 0.22 AML other m 2021-10-01T01:36:23.46
IV.LNSS.HHE. ML:1.6 0.00006945000000000001 0.8 AML other m 2021-10-01T01:36:24.46
IV.MOMA.HHN. ML:2.2 0.00022799999999999999 0.2 AML other m 2021-10-01T01:36:24.98
IV.MOMA.HHE. ML:2.0 0.000174 0.24 AML other m 2021-10-01T01:36:24.81
IV.LNSS.HHN. ML:1.9 0.0001148 1.2 AML other m 2021-10-01T01:36:25.79
IV.APEC.HHN. ML:1.5 0.0000463 1.08 AML other m 2021-10-01T01:36:26.07
IV.SMA1.EHE. ML:1.6 0.0000663 0.64 AML other m 2021-10-01T01:36:27.88
IV.RM33.EHN. ML:1.7 0.00006429999999999999 0.5 AML other m 2021-10-01T01:36:27.47
IV.RM33.EHE. ML:1.8 0.00007455000000000001 0.22 AML other m 2021-10-01T01:36:28.74
IV.FIR.HHE. ML:2.9 0.00034199999999999996 0.46 AML other m 2021-10-01T01:36:29.54
IV.APEC.HHE. ML:1.5 0.00004435 0.56 AML other m 2021-10-01T01:36:33.73
IV.FIR.HHN. ML:3.0 0.000398 0.08 AML other m 2021-10-01T01:36:34.51
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