Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 27-09-2021 and time 01:14:04 (UTC) in region 5 km SE Scheggino (PG)

A magnitude ML 1.1 earthquake occured in region: 5 km SE Scheggino (PG), on

  • 27-09-2021 01:14:04 (UTC)
  • 27-09-2021 03:14:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6830, 12.8780 at 13 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.

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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
Scheggino PG 5 461 461
Poggiodomo PG 6 117 578
Sant'Anatolia di Narco PG 7 564 1142
Monteleone di Spoleto PG 7 599 1741
Vallo di Nera PG 10 364 2105
Ferentillo TR 10 1913 4018
Polino TR 11 233 4251
Cascia PG 12 3217 7468
Spoleto PG 13 38218 45686
Montefranco TR 13 1276 46962
Arrone TR 14 2763 49725
Leonessa RI 15 2435 52160
Cerreto di Spoleto PG 16 1075 53235
Campello sul Clitunno PG 17 2442 55677
Morro Reatino RI 18 373 56050
Labro RI 19 374 56424
Rivodutri RI 19 1253 57677
Poggio Bustone RI 20 2055 59732

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Terni (111501 inhabitants)
34 Km SE of Foligno (57155 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
62 Km SE of Perugia (166134 inhabitants)
68 Km W of Teramo (54892 inhabitants)
70 Km E of Viterbo (67173 inhabitants)
77 Km N of Guidonia Montecelio (88673 inhabitants)
80 Km N of Tivoli (56533 inhabitants)
94 Km NE of Roma (2864731 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
Reviewed
Rev100 		ML 1.1 2021-09-27
01:14:04		 42.6833 12.878 13 2021-09-27
01:22:21		 Sala Sismica INGV-Roma 95924591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-27 01:14:04 ± 0.05
Latitude 42.6833 ± 0.0036
Longitude 12.8780 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95924591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 347
Semi-minor axis of confidence ellipse (meter) 185
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 335
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.01529
Epicentral distance of station farthest from the epicenter (degree) 0.53690
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 12
Type of magnitude ML
Reference to an origin 95924591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-27 01:22:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2021-09-27T01:14:22.45 0.6 undecidable manual S 96 59.5959 93 -0.05 45
IV.FDMO.HHZ. 2021-09-27T01:14:18.03 0.3 undecidable manual S 23 42.7239 94 0.03 71
IV.ASSB.HHE. 2021-09-27T01:14:18.43 0.6 undecidable manual S 336 43.623 94 0.18 46
IV.SMA1.EHZ. 2021-09-27T01:14:17.10 0.6 undecidable manual S 99 37.7289 95 0.42 44
IV.MC2.EHZ. 2021-09-27T01:14:16.42 0.6 undecidable manual S 45 35.8419 95 0.26 46
IV.CESI.HHZ. 2021-09-27T01:14:16.37 0.6 undecidable manual S 3 35.742 95 0.23 46
IV.RM33.EHZ. 2021-09-27T01:14:15.71 0.6 undecidable manual S 125 33.6441 96 0.13 47
IV.TERO.HHZ. 2021-09-27T01:14:14.52 1.0 undecidable manual P 96 59.5959 93 -0.22 22
IV.MOMA.HHZ. 2021-09-27T01:14:14.57 0.6 undecidable manual S 298 28.4493 98 0.37 45
IV.CESX.HHE. 2021-09-27T01:14:13.11 0.6 undecidable manual S 251 25.1526 99 -0.23 47
IV.NRCA.HHZ. 2021-09-27T01:14:13.35 0.6 undecidable manual S 49 25.4523 99 -0.07 48
IV.FDMO.HHZ. 2021-09-27T01:14:12.00 0.1 undecidable manual P 23 42.7239 94 -0.14 92
IV.ASSB.HHE. 2021-09-27T01:14:12.35 0.1 undecidable manual P 336 43.623 94 0.07 93
IV.CESI.HHZ. 2021-09-27T01:14:11.10 0.1 undecidable manual P 3 35.742 95 0.04 95
IV.SMA1.EHZ. 2021-09-27T01:14:11.55 0.1 undecidable manual P 99 37.7289 95 0.17 92
IV.ARRO.EHZ. 2021-09-27T01:14:10.62 0.6 undecidable manual S 218 14.7741 116 -0.06 50
IV.MC2.EHZ. 2021-09-27T01:14:10.32 0.6 undecidable manual P 45 35.8419 95 -0.75 39
IV.T1299.EHN. 2021-09-27T01:14:10.73 0.1 undecidable manual P 99 33.4443 96 0.02 96
IV.RM33.EHZ. 2021-09-27T01:14:10.67 0.6 positive manual P 125 33.6441 96 -0.07 48
IV.LNSS.HHZ. 2021-09-27T01:14:10.96 0.6 undecidable manual S 124 15.9729 113 -0.01 50
IV.MOMA.HHZ. 2021-09-27T01:14:10.14 0.6 undecidable manual P 298 28.4493 98 0.2 47
IV.CESX.HHE. 2021-09-27T01:14:09.27 0.1 undecidable manual P 251 25.1526 99 -0.18 95
IV.NRCA.HHZ. 2021-09-27T01:14:09.29 0.1 undecidable manual P 49 25.4523 99 -0.2 93
IV.LNSS.HHZ. 2021-09-27T01:14:08.00 0.1 undecidable manual P 124 15.9729 113 -0.08 98
IV.GAVE.EHZ. 2021-09-27T01:14:08.51 0.6 undecidable manual S 53 1.6983 171 -0.03 50
IV.ARRO.EHZ. 2021-09-27T01:14:07.94 0.1 negative manual P 218 14.7741 116 0.03 98
IV.GAVE.EHZ. 2021-09-27T01:14:06.78 0.1 positive manual P 53 1.6983 171 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.4 0.000374 0.14 AML other m 2021-09-27T01:14:08.56
IV.GAVE.EHN. ML:1.1 0.000185 0.7 AML other m 2021-09-27T01:14:08.99
IV.ARRO.EHE. ML:1.1 0.000111 0.18 AML other m 2021-09-27T01:14:10.79
IV.ARRO.EHN. ML:1.0 0.00007915 0.14 AML other m 2021-09-27T01:14:10.91
IV.LNSS.HHN. ML:1.2 0.0001315 1.16 AML other m 2021-09-27T01:14:11.13
IV.LNSS.HHE. ML:1.2 0.00011649999999999999 0.1 AML other m 2021-09-27T01:14:11.51
IV.NRCA.HHE. ML:1.2 0.00008010000000000001 0.12 AML other m 2021-09-27T01:14:13.64
IV.NRCA.HHN. ML:1.0 0.00004910000000000001 0.44 AML other m 2021-09-27T01:14:14.63
IV.SMA1.EHE. ML:1.4 0.00007795000000000001 0.2 AML other m 2021-09-27T01:14:18.10
IV.FDMO.HHE. ML:1.1 0.00003915 1.14 AML other m 2021-09-27T01:14:18.77
IV.SMA1.EHN. ML:1.1 0.00005215 0.66 AML other m 2021-09-27T01:14:18.65
IV.FDMO.HHN. ML:1.0 0.00003025 0.18 AML other m 2021-09-27T01:14:18.55
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