Earthquake with magnitude of ML 1.3 on date 12-01-2021 and time 21:40:41 (UTC) in region 4 km W Scheggino (PG)

A magnitude ML 1.3 earthquake occured in region: 4 km W Scheggino (PG), on

  • 12-01-2021 21:40:41 (UTC)
  • 12-01-2021 22:40:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.711, 12.781 at 9 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.

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 4 461 461
Spoleto PG 4 38218 38679
Sant'Anatolia di Narco PG 5 564 39243
Vallo di Nera PG 9 364 39607
Ferentillo TR 10 1913 41520
Campello sul Clitunno PG 12 2442 43962
Montefranco TR 13 1276 45238
Poggiodomo PG 13 117 45355
Arrone TR 14 2763 48118
Polino TR 15 233 48351
Castel Ritaldi PG 15 3278 51629
Monteleone di Spoleto PG 16 599 52228
Cerreto di Spoleto PG 17 1075 53303
Trevi PG 19 8469 61772
Cascia PG 19 3217 64989
Acquasparta TR 19 4778 69767
Terni TR 20 111501 181268

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NE of Terni (111501 inhabitants)
28 Km S of Foligno (57155 inhabitants)
54 Km SE of Perugia (166134 inhabitants)
64 Km NE of Viterbo (67173 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
76 Km W of Teramo (54892 inhabitants)
79 Km N of Guidonia Montecelio (88673 inhabitants)
83 Km N of Tivoli (56533 inhabitants)
94 Km N of Roma (2864731 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.3 2021-01-12
21:40:41
42.7112 12.7812 9 2021-01-12
21:51:05
Sala Sismica INGV-Roma 86210281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-12 21:40:41 ± 0.06
Latitude 42.7112 ± 0.0063
Longitude 12.7812 ± 0.0073
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86210281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 764
Semi-minor axis of confidence ellipse (meter) 347
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 216
Circular confidence region, given by single value of horizontal uncertainty (meter) 760
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.48473
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations 16
Type of magnitude ML
Reference to an origin 86210281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-12 21:51:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PESA.HHZ. 2021-01-12T21:41:18.57 3.0 undecidable manual S -3.23 0
IV.ATCC.EHZ. 2021-01-12T21:40:58.86 0.6 undecidable manual S 348 0.4847 50 0.56 42
IV.SMA1.EHZ. 2021-01-12T21:40:56.56 0.3 undecidable manual S 101 0.4155 50 0.34 68
IV.ASSB.HHZ. 2021-01-12T21:40:54.02 0.3 undecidable manual S 345 0.3435 50 -0.08 73
IV.CESI.HHZ. 2021-01-12T21:40:53.17 0.3 undecidable manual S 17 0.3076 50 0.14 72
IV.NRCA.HHZ. 2021-01-12T21:40:51.72 0.3 undecidable manual S 63 0.2734 50 -0.31 70
IV.ATCC.EHZ. 2021-01-12T21:40:50.86 0.6 undecidable manual P 348 0.4847 50 -0.15 46
IV.LNSS.HHZ. 2021-01-12T21:40:49.95 0.3 undecidable manual S 120 0.2194 111 -0.13 74
IV.SMA1.EHZ. 2021-01-12T21:40:49.94 0.6 negative manual P 101 0.4155 50 0.12 47
IV.ASSB.HHZ. 2021-01-12T21:40:48.42 0.1 positive manual P 345 0.3435 50 -0.17 95
IV.CESX.HHZ. 2021-01-12T21:40:48.17 0.3 undecidable manual S 234 0.1763 115 -0.38 71
IV.MOMA.HHZ. 2021-01-12T21:40:48.95 0.3 undecidable manual S 301 0.1808 115 0.23 73
IV.ARRO.EHZ. 2021-01-12T21:40:47.32 0.3 undecidable manual S 185 0.1322 122 0.24 73
IV.NRCA.HHZ. 2021-01-12T21:40:47.23 0.6 positive manual P 63 0.2734 50 -0.17 48
IV.CESI.HHZ. 2021-01-12T21:40:47.83 0.1 positive manual P 17 0.3076 50 -0.15 96
IV.LNSS.HHZ. 2021-01-12T21:40:46.25 1.0 undecidable manual P 120 0.2194 111 -0.02 25
IV.MOMA.HHZ. 2021-01-12T21:40:45.50 0.3 negative manual P 301 0.1808 115 0.02 76
IV.CESX.HHZ. 2021-01-12T21:40:45.19 1.0 undecidable manual P 234 0.1763 115 -0.2 24
IV.ARRO.EHZ. 2021-01-12T21:40:44.67 0.1 positive manual P 185 0.1322 122 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:1.3 0.0002155 0.64 AML other m 2021-01-12T21:40:47.77
IV.ARRO.EHN. ML:1.4 0.0002465 0.14 AML other m 2021-01-12T21:40:47.53
IV.CESX.HHN. ML:1.3 0.000162 1.32 AML other m 2021-01-12T21:40:49.68
IV.MOMA.HHN. ML:1.6 0.000276 0.22 AML other m 2021-01-12T21:40:49.17
IV.CESX.HHE. ML:1.2 0.000137 0.4 AML other m 2021-01-12T21:40:49.62
IV.MOMA.HHE. ML:1.3 0.0001425 1.68 AML other m 2021-01-12T21:40:49.09
IV.LNSS.HHN. ML:1.3 0.0001335 1.02 AML other m 2021-01-12T21:40:50.24
IV.LNSS.HHE. ML:1.3 0.00012345 1.48 AML other m 2021-01-12T21:40:50.21
IV.NRCA.HHE. ML:1.3 8.92E-5 1.92 AML other m 2021-01-12T21:40:52.97
IV.NRCA.HHN. ML:1.3 9.88E-5 0.14 AML other m 2021-01-12T21:40:52.19
IV.CESI.HHE. ML:1.2 6.16E-5 0.44 AML other m 2021-01-12T21:40:53.57
IV.CESI.HHN. ML:1.2 7.09E-5 1.08 AML other m 2021-01-12T21:40:54.74
IV.ASSB.HHE. ML:1.3 7.075E-5 0.92 AML other m 2021-01-12T21:40:55.08
IV.ASSB.HHN. ML:1 4.005E-5 0.52 AML other m 2021-01-12T21:40:55.71
IV.SMA1.EHE. ML:1.5 9.3E-5 0.2 AML other m 2021-01-12T21:40:57.67
IV.SMA1.EHN. ML:1.3 5.555E-5 0.32 AML other m 2021-01-12T21:40:57.74
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