Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 24-10-2021 and time 02:29:55 (Italy) in region 2 km SE Scheggino (PG)

A magnitude ML 1.1 earthquake occured in region: 2 km SE Scheggino (PG), on

  • 24-10-2021 00:29:55 (UTC)
  • 24-10-2021 02:29:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6980, 12.8400 at 12 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 2 461 461
Sant'Anatolia di Narco PG 4 564 1025
Poggiodomo PG 8 117 1142
Vallo di Nera PG 8 364 1506
Spoleto PG 9 38218 39724
Ferentillo TR 9 1913 41637
Monteleone di Spoleto PG 11 599 42236
Polino TR 13 233 42469
Montefranco TR 13 1276 43745
Arrone TR 14 2763 46508
Cascia PG 14 3217 49725
Campello sul Clitunno PG 15 2442 52167
Cerreto di Spoleto PG 15 1075 53242
Leonessa RI 18 2435 55677
Morro Reatino RI 19 373 56050
Labro RI 19 374 56424
Castel Ritaldi PG 20 3278 59702

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NE of Terni (111501 inhabitants)
31 Km SE of Foligno (57155 inhabitants)
59 Km SE of Perugia (166134 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
68 Km E of Viterbo (67173 inhabitants)
71 Km W of Teramo (54892 inhabitants)
78 Km N of Guidonia Montecelio (88673 inhabitants)
82 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 2021-10-24
00:29:55		 42.6977 12.8398 12 2021-10-24
01:59:49		 Sala Sismica INGV-Roma 96924971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-24 00:29:55 ± 0.08
Latitude 42.6977 ± 0.0045
Longitude 12.8398 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96924971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 448
Semi-minor axis of confidence ellipse (meter) 128
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 339
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41009
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 96924971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-24 01:59:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IX.SRN3.HHZ.02 2021-10-24T00:31:15.56 3.0 undecidable manual Sn 1.2 0
IV.ESCV.HHZ. 2021-10-24T00:31:12.15 3.0 undecidable manual Pn 2.13 0
IV.PAOL.HHZ. 2021-10-24T00:31:07.05 3.0 undecidable manual Sg 12.5 0
GU.CARD.HHZ. 2021-10-24T00:30:55.51 3.0 undecidable manual Sg 2.2 0
IV.PTRP.HHZ. 2021-10-24T00:30:47.57 3.0 negative manual Pn 6.62 0
IV.ZEN8.EHZ. 2021-10-24T00:30:47.16 3.0 negative manual Pg 8.49 0
IV.TST02.HHZ. 2021-10-24T00:30:42.26 3.0 undecidable manual S 8.98 0
OX.MARN.HHZ. 2021-10-24T00:30:39.87 3.0 undecidable manual Pg 3.65 0
IV.RMP.HHZ. 2021-10-24T00:30:11.73 3.0 positive manual P -1.26 0
IV.MMO1.EHZ. 2021-10-24T00:30:10.34 0.6 undecidable manual S 60 45.5211 91 0.3 44
IV.RM33.EHZ. 2021-10-24T00:30:08.18 0.3 undecidable manual S 124 37.0296 92 0.39 65
IV.MOMA.HHZ. 2021-10-24T00:30:04.73 0.1 undecidable manual S 298 24.9528 93 0.18 93
IV.NRCA.HHZ. 2021-10-24T00:30:04.88 0.1 undecidable manual S 56 26.9508 93 -0.21 93
IV.CESX.HHZ. 2021-10-24T00:30:03.83 0.1 undecidable manual S 244 22.8549 94 -0.18 94
IV.MMO1.EHZ. 2021-10-24T00:30:03.78 0.3 undecidable manual P 60 45.5211 91 -0.09 69
IV.LNSS.HHZ. 2021-10-24T00:30:02.96 0.1 undecidable manual S 123 19.4694 96 -0.13 96
IV.RM33.EHZ. 2021-10-24T00:30:02.36 0.1 undecidable manual P 124 37.0296 92 -0.2 91
IV.ARRO.EHZ. 2021-10-24T00:30:01.64 0.1 undecidable manual S 205 14.4744 106 -0.15 95
IV.MOMA.HHZ. 2021-10-24T00:30:00.67 0.1 undecidable manual P 298 24.9528 93 -0.03 97
IV.PP3.EHZ. 2021-10-24T00:30:00.11 3.0 positive manual P -0.17 0
IV.NRCA.HHZ. 2021-10-24T00:30:00.86 0.1 undecidable manual P 56 26.9508 93 -0.15 94
IV.CESX.HHZ. 2021-10-24T00:30:00.62 0.1 undecidable manual P 244 22.8549 94 0.23 92
IV.GAVE.EHZ. 2021-10-24T00:29:59.83 0.1 undecidable manual S 98 4.4955 153 0.09 100
IV.ARRO.EHZ. 2021-10-24T00:29:59.17 0.1 undecidable manual P 205 14.4744 106 0.07 97
IV.LNSS.HHZ. 2021-10-24T00:29:59.70 0.3 undecidable manual P 123 19.4694 96 -0.15 71
IV.GAVE.EHZ. 2021-10-24T00:29:58.08 0.1 undecidable manual P 98 4.4955 153 0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHN. ML:1.6 0.0006665 0.24 AML other m 2021-10-24T00:30:00.16
IV.GAVE.EHE. ML:1.4 0.00040849999999999995 0.18 AML other m 2021-10-24T00:30:00.18
IV.ARRO.EHE. ML:1.5 0.00026900000000000003 1.78 AML other m 2021-10-24T00:30:02.03
IV.ARRO.EHN. ML:1.1 0.000112 0.12 AML other m 2021-10-24T00:30:02.03
IV.LNSS.HHN. ML:0.9 0.00006125 0.74 AML other m 2021-10-24T00:30:04.52
IV.CESX.HHE. ML:0.8 0.0000408 1.36 AML other m 2021-10-24T00:30:04.82
IV.MOMA.HHE. ML:1.1 0.0000719 0.96 AML other m 2021-10-24T00:30:05.56
IV.LNSS.HHE. ML:1.1 0.0000857 1.16 AML other m 2021-10-24T00:30:05.69
IV.MOMA.HHN. ML:1.0 0.00005355 0.26 AML other m 2021-10-24T00:30:05.24
IV.CESX.HHN. ML:1.0 0.00005505 1.4 AML other m 2021-10-24T00:30:05.85
IV.NRCA.HHN. ML:1.1 0.000061 0.12 AML other m 2021-10-24T00:30:05.71
IV.NRCA.HHE. ML:1.3 0.00009645000000000001 0.18 AML other m 2021-10-24T00:30:05.85
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