Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 27-09-2021 and time 02:53:00 (Italy) in region 2 km SE Sigillo (PG)

A magnitude ML 1.5 earthquake occured in region: 2 km SE Sigillo (PG), on

  • 27-09-2021 00:53:00 (UTC)
  • 27-09-2021 02:53:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3160, 12.7520 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
Sigillo PG 2 2404 2404
Fossato di Vico PG 2 2840 5244
Costacciaro PG 6 1216 6460
Gualdo Tadino PG 10 15208 21668
Scheggia e Pascelupo PG 12 1393 23061
Fabriano AN 13 31480 54541
Gubbio PG 15 32216 86757
Sassoferrato AN 16 7285 94042
Esanatoglia MC 17 2034 96076
Cerreto d'Esi AN 19 3817 99893
Serra Sant'Abbondio PU 20 1027 100920
Genga AN 20 1797 102717

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NE of Perugia (166134 inhabitants)
40 Km N of Foligno (57155 inhabitants)
63 Km SW of Fano (60888 inhabitants)
68 Km S of Pesaro (94582 inhabitants)
71 Km W of Ancona (100861 inhabitants)
72 Km E of Arezzo (99543 inhabitants)
84 Km N of Terni (111501 inhabitants)
84 Km S of Rimini (147750 inhabitants)
100 Km SE of Cesena (96758 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 1.5 2021-09-27
00:53:00		 43.3158 12.7522 11 2022-03-30
13:04:10		 Bollettino Sismico Italiano INGV 96323881
Reviewed
Rev100 		ML 1.5 2021-09-27
00:53:00		 43.3195 12.7532 14 2021-09-27
01:00:01		 Sala Sismica INGV-Roma 95924211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-27 00:53:00 ± 0.04
Latitude 43.3158 ± 0.0018
Longitude 12.7522 ± 0.0025
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 96323881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 183
Semi-minor axis of confidence ellipse (meter) 148
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 39
Circular confidence region, given by single value of horizontal uncertainty (meter) 180.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40
Number of associated phases, regardless of their use for origin computation 57
Number of defining phases 55
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) 0.11781
Epicentral distance of station farthest from the epicenter (degree) 0.59085
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 31
Type of magnitude ML
Reference to an origin 96323881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-07 15:56:54

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 95924211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-27 01:00:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2021-09-27T00:53:19.93 0.6 undecidable manual S 151 60.9945 50 0.39 42
IT.MTCL.HGZ. 2021-09-27T00:53:14.44 0.6 undecidable manual S 151 40.9257 50 0.26 45
IV.FDMO.HHZ. 2021-09-27T00:53:14.40 0.3 undecidable manual S 139 41.1255 50 0.16 69
IV.CESI.HHZ. 2021-09-27T00:53:13.48 0.3 undecidable manual S 160 36.6411 50 0.45 66
IV.APEC.HHZ. 2021-09-27T00:53:13.67 0.6 undecidable manual S 315 37.9287 50 0.29 45
IV.NARO.HHZ. 2021-09-27T00:53:12.64 0.3 undecidable manual S 337 35.5422 50 -0.09 71
IV.MMO1.EHZ. 2021-09-27T00:53:12.13 0.1 undecidable manual P 135 65.5899 50 -0.17 88
IV.MPAG.EHZ. 2021-09-27T00:53:12.70 0.3 undecidable manual S 1 34.743 50 0.17 70
IV.NRCA.HHZ. 2021-09-27T00:53:11.46 0.1 negative manual P 151 60.9945 50 -0.14 90
IV.ASSB.HHN. 2021-09-27T00:53:11.47 0.3 undecidable manual S 194 31.2465 50 -0.12 71
IV.EL6.EHZ. 2021-09-27T00:53:11.02 0.3 undecidable manual S 87 28.2495 50 0.23 70
IV.ATPC.HHE. 2021-09-27T00:53:11.48 0.3 undecidable manual S 308 30.0477 50 0.22 70
IV.ATPI.EHZ. 2021-09-27T00:53:11.74 0.6 undecidable manual S 298 31.9458 50 -0.04 48
IV.ATBU.EHZ. 2021-09-27T00:53:10.11 0.3 undecidable manual S 317 24.1536 50 0.41 68
IV.TB02.DHZ.01 2021-09-27T00:53:10.79 0.6 undecidable manual S 282 28.3494 50 -0.02 49
IV.TB03.DHZ.01 2021-09-27T00:53:10.96 0.3 undecidable manual S 289 29.1486 50 -0.07 72
IV.MML1.EHZ. 2021-09-27T00:53:10.98 0.3 undecidable manual S 142 28.6491 50 0.09 72
IV.ATLO.EHE. 2021-09-27T00:53:10.56 0.6 undecidable manual S 270 27.8499 50 -0.12 48
IV.TB01.DHZ.01 2021-09-27T00:53:10.37 0.6 undecidable manual S 286 26.5512 50 0.03 49
IV.ARVD.HHZ. 2021-09-27T00:53:09.97 0.3 undecidable manual S 37 25.3524 50 -0.04 73
IV.MMUR.HNE. 2021-09-27T00:53:09.80 0.6 undecidable manual S 55 24.2535 50 0.09 48
IV.PE3.EHZ. 2021-09-27T00:53:09.64 0.1 undecidable manual P 334 46.9197 50 0.21 91
IV.APEC.HHZ. 2021-09-27T00:53:08.01 0.1 undecidable manual P 315 37.9287 50 -0.03 96
IV.ATCC.EHZ. 2021-09-27T00:53:08.01 0.3 undecidable manual S 212 17.0718 122 0.22 72
IT.MTCL.HGZ. 2021-09-27T00:53:08.46 0.3 undecidable manual P 151 40.9257 50 -0.04 71
IV.FDMO.HHZ. 2021-09-27T00:53:08.28 0.1 positive manual P 139 41.1255 50 -0.26 91
IV.MURB.HHZ. 2021-09-27T00:53:08.69 0.3 undecidable manual S 252 19.2696 50 0.29 70
IV.COR1.EHZ. 2021-09-27T00:53:08.99 0.1 undecidable manual P 30 40.3263 50 0.58 84
IV.FIU1.HNZ. 2021-09-27T00:53:08.66 0.6 undecidable manual S 134 20.2686 50 0 49
IV.FRON.EHZ. 2021-09-27T00:53:08.94 0.6 undecidable manual S 355 22.4553 50 -0.32 46
IV.CESI.HHZ. 2021-09-27T00:53:07.64 0.1 negative manual P 160 36.6411 50 -0.2 93
IV.SNTG.HHZ. 2021-09-27T00:53:07.75 0.3 undecidable manual S 114 16.6722 123 0.1 74
IV.NARO.HHZ. 2021-09-27T00:53:07.30 0.1 positive manual P 337 35.5422 50 -0.37 90
IV.MPAG.EHZ. 2021-09-27T00:53:07.51 0.1 undecidable manual P 1 34.743 50 -0.04 96
IV.ATFO.HHN. 2021-09-27T00:53:07.49 0.3 undecidable manual S 291 15.5733 125 0.13 74
IV.EL6.EHZ. 2021-09-27T00:53:06.49 0.3 negative manual P 87 28.2495 50 -0.06 73
IV.ATPC.HHE. 2021-09-27T00:53:06.65 0.1 positive manual P 308 30.0477 50 -0.17 94
IV.ATPI.EHZ. 2021-09-27T00:53:06.99 0.6 positive manual P 298 31.9458 50 -0.13 47
IV.TB02.DHZ.01 2021-09-27T00:53:06.37 0.3 undecidable manual P 282 28.3494 50 -0.19 71
IV.ATSC.EHE. 2021-09-27T00:53:06.72 0.3 undecidable manual S 336 13.0758 130 0.05 75
IV.TB03.DHZ.01 2021-09-27T00:53:06.55 0.1 undecidable manual P 289 29.1486 50 -0.14 95
IV.ASSB.HHN. 2021-09-27T00:53:06.66 0.1 undecidable manual P 194 31.2465 50 -0.35 90
IV.MML1.EHZ. 2021-09-27T00:53:06.34 0.6 positive manual P 142 28.6491 50 -0.26 46
IV.SSFR.HNZ. 2021-09-27T00:53:06.92 0.3 undecidable manual S 10 13.5753 129 0.13 74
IV.ATLO.EHE. 2021-09-27T00:53:06.51 0.1 undecidable manual P 270 27.8499 50 0.03 97
IV.TB01.DHZ.01 2021-09-27T00:53:06.17 0.1 undecidable manual P 286 26.5512 50 -0.12 96
IV.MURB.HHZ. 2021-09-27T00:53:05.25 3.0 positive manual P 252 19.2696 50 0.08 98
IV.FIU1.HNZ. 2021-09-27T00:53:05.21 0.6 undecidable manual P 134 20.2686 50 -0.1 49
IV.FRON.EHZ. 2021-09-27T00:53:05.40 0.1 undecidable manual P 355 22.4553 50 -0.26 94
IV.ATBU.EHZ. 2021-09-27T00:53:05.96 0.1 positive manual P 317 24.1536 50 0.04 98
IV.ARVD.HHZ. 2021-09-27T00:53:05.93 0.1 negative manual P 37 25.3524 50 -0.17 95
IV.MMUR.HNE. 2021-09-27T00:53:05.74 0.1 undecidable manual P 55 24.2535 50 -0.19 95
IV.ATFO.HHN. 2021-09-27T00:53:04.63 0.1 undecidable manual P 291 15.5733 125 0.06 99
IV.SSFR.HNZ. 2021-09-27T00:53:04.25 3.0 undecidable manual P 10 13.5753 129 0.01 50
IV.SNTG.HHZ. 2021-09-27T00:53:04.81 0.3 undecidable manual P 114 16.6722 123 0.07 74
IV.ATCC.EHZ. 2021-09-27T00:53:04.86 0.1 undecidable manual P 212 17.0718 122 0.05 99
IV.ATSC.EHE. 2021-09-27T00:53:04.21 0.1 undecidable manual P 336 13.0758 130 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSFR.HHN. ML:1.7 0.00055574495 0.08 AML other m 2021-09-27T00:53:07.33
IV.SSFR.HHE. ML:1.9 0.00084986665 0.24 AML other m 2021-09-27T00:53:07.48
IV.SSFR.HNE. ML:2.1 0.0012919174999999998 0.05 AML other m 2021-09-27T00:53:07.65
IV.SSFR.HNN. ML:2.2 0.0014449999999999999 0.06 AML other m 2021-09-27T00:53:08.04
IV.ATCC.EHN. ML:1.8 0.0005235 0.12 AML other m 2021-09-27T00:53:08.14
IV.SNTG.HNN. ML:1.4 0.00019224865 0.08 AML other m 2021-09-27T00:53:08.21
IV.SNTG.HHN. ML:1.4 0.00020053465 0.08 AML other m 2021-09-27T00:53:08.21
IV.ATCC.EHE. ML:1.9 0.0007145000000000001 0.12 AML other m 2021-09-27T00:53:08.25
IV.SNTG.HHE. ML:1.4 0.000222 0.1 AML other m 2021-09-27T00:53:08.44
IV.SNTG.HNE. ML:1.4 0.00021146205 0.08 AML other m 2021-09-27T00:53:08.44
IV.MURB.HHN. ML:1.4 0.00021 0.38 AML other m 2021-09-27T00:53:09.26
IV.FRON.EHN. ML:1.8 0.0003715 0.68 AML other m 2021-09-27T00:53:09.42
IV.FRON.EHE. ML:1.7 0.000308 0.88 AML other m 2021-09-27T00:53:09.62
IV.ARVD.HHN. ML:1.3 0.00011715 0.42 AML other m 2021-09-27T00:53:10.22
IV.ARVD.HHE. ML:1.4 0.00015949999999999997 0.26 AML other m 2021-09-27T00:53:10.27
IV.MURB.HHE. ML:1.5 0.0002215 0.2 AML other m 2021-09-27T00:53:10.73
IV.EL6.EHE. ML:1.6 0.00020950000000000002 0.1 AML other m 2021-09-27T00:53:11.29
IV.MML1.EHE. ML:1.2 0.0000759 0.7 AML other m 2021-09-27T00:53:11.48
IV.EL6.EHN. ML:1.7 0.00027100000000000003 0.96 AML other m 2021-09-27T00:53:11.30
IV.ATPI.EHN. ML:1.0 0.00004405 0.38 AML other m 2021-09-27T00:53:12.14
IV.MML1.EHN. ML:1.1 0.00007245 1.26 AML other m 2021-09-27T00:53:13.66
IV.ATPI.EHE. ML:1.1 0.00005715 0.66 AML other m 2021-09-27T00:53:13.53
IV.MPAG.EHE. ML:1.2 0.00006895 0.44 AML other m 2021-09-27T00:53:14.32
IV.MPAG.EHN. ML:1.1 0.00005345 0.82 AML other m 2021-09-27T00:53:14.51
IV.FDMO.HHE. ML:1.3 0.0000627 1.18 AML other m 2021-09-27T00:53:15.80
IV.FDMO.HHN. ML:1.3 0.00006335000000000001 0.16 AML other m 2021-09-27T00:53:15.82
IV.NRCA.HHE. ML:1.5 0.00006204999999999999 1.54 AML other m 2021-09-27T00:53:20.96
IV.NRCA.HHN. ML:1.5 0.00005935 0.52 AML other m 2021-09-27T00:53:21.20
IV.GAVE.EHE. ML:1.4 0.000043249999999999994 0.32 AML other m 2021-09-27T00:53:25.81
IV.MURB.HNN. ML:1.4 0.000178718925 0.2 AML other m 2021-09-27T00:53:09.36
IV.MURB.HNE. ML:1.5 0.00024351905000000003 0.22 AML other m 2021-09-27T00:53:10.93
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