Earthquake with magnitude of ML 1.3 on date 28-11-2020 and time 12:35:29 (Italy) in region 9 km NW Montefranco (TR)

A magnitude ML 1.3 earthquake occured in region: 9 km NW Montefranco (TR), on

  • 28-11-2020 11:35:29 (UTC)
  • 28-11-2020 12:35:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.65, 12.69 at 8 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
Montefranco TR 9 1276 1276
Ferentillo TR 9 1913 3189
Spoleto PG 10 38218 41407
Arrone TR 10 2763 44170
Terni TR 11 111501 155671
Acquasparta TR 13 4778 160449
San Gemini TR 13 5018 165467
Scheggino PG 13 461 165928
Polino TR 15 233 166161
Sant'Anatolia di Narco PG 15 564 166725
Montecastrilli TR 17 5022 171747
Labro RI 17 374 172121
Stroncone TR 17 4917 177038
Morro Reatino RI 18 373 177411
Colli sul Velino RI 19 533 177944
Vallo di Nera PG 19 364 178308
Castel Ritaldi PG 19 3278 181586
Massa Martana PG 19 3770 185356
Campello sul Clitunno PG 20 2442 187798

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km NE of Terni (111501 inhabitants)
34 Km S of Foligno (57155 inhabitants)
55 Km E of Viterbo (67173 inhabitants)
56 Km SE of Perugia (166134 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
73 Km N of Guidonia Montecelio (88673 inhabitants)
77 Km N of Tivoli (56533 inhabitants)
83 Km W of Teramo (54892 inhabitants)
86 Km N of Roma (2864731 inhabitants)
97 Km NE of Civitavecchia (52991 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.3 2020-11-28
11:35:29
42.65 12.69 9 2020-11-28
12:01:32
Sala Sismica INGV-Roma 85067301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-28 11:35:29 ± 0.13
Latitude 42.65 ± 0.01
Longitude 12.69 ± 0.01
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 85067301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1118
Semi-minor axis of confidence ellipse (meter) 611
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 207
Circular confidence region, given by single value of horizontal uncertainty (meter) 1120
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.08993
Epicentral distance of station farthest from the epicenter (degree) 0.57647
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 85067301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-28 12:01:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2020-11-28T11:35:49.64 0.3 undecidable manual S 40 0.5765 50 0.46 64
IV.MGAB.HHE. 2020-11-28T11:35:47.22 0.6 undecidable manual S 301 0.4982 50 0.35 44
IV.ASSB.HHZ. 2020-11-28T11:35:43.97 0.1 undecidable manual S 356 0.3894 50 0.33 91
IV.CESI.HHZ. 2020-11-28T11:35:43.68 0.1 undecidable manual S 24 0.384 50 0.21 94
IV.CSP1.EHZ. 2020-11-28T11:35:40.36 0.3 undecidable manual P 40 0.5765 50 -0.32 66
IV.MGAB.HHE. 2020-11-28T11:35:39.57 0.6 undecidable manual P 301 0.4982 50 0.23 46
IV.LNSS.HHZ. 2020-11-28T11:35:39.76 0.3 undecidable manual S 101 0.2608 106 0.24 71
IV.ASSB.HHZ. 2020-11-28T11:35:37.48 0.1 undecidable manual P 356 0.3894 50 0 98
IV.CESI.HHZ. 2020-11-28T11:35:36.93 0.3 undecidable manual P 24 0.384 50 -0.45 67
IV.NRCA.HHZ. 2020-11-28T11:35:36.08 0.1 undecidable manual P 60 0.3579 50 -0.86 76
IV.MOMA.HHZ. 2020-11-28T11:35:36.47 0.3 undecidable manual S 329 0.1754 113 0.06 75
IV.LNSS.HHZ. 2020-11-28T11:35:34.67 0.3 undecidable manual P 101 0.2608 106 -0.43 69
IV.ARRO.EHZ. 2020-11-28T11:35:34.05 0.1 undecidable manual S 144 0.0917 130 0.4 95
IV.MOMA.HHZ. 2020-11-28T11:35:33.13 0.1 undecidable manual P 329 0.1754 113 -0.18 98
IT.GNU.HGZ. 2020-11-28T11:35:33.38 1.0 undecidable manual P 329 0.1745 114 0.08 25
IV.CESX.HHZ. 2020-11-28T11:35:31.48 0.1 undecidable manual P 240 0.0899 130 -0.2 99
IV.ARRO.EHZ. 2020-11-28T11:35:31.88 0.1 undecidable manual P 144 0.0917 130 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:1.2 0.0002345 0.72 AML other m 2020-11-28T11:35:34.62
IV.ARRO.EHN. ML:1.4 0.0003195 0.44 AML other m 2020-11-28T11:35:34.68
IV.MOMA.HHN. ML:1.3 0.0001675 1.18 AML other m 2020-11-28T11:35:37.40
IV.MOMA.HHE. ML:1.3 0.000166 1.38 AML other m 2020-11-28T11:35:38.01
IV.LNSS.HHN. ML:1.4 0.0001195 1.68 AML other m 2020-11-28T11:35:39.03
IV.LNSS.HHE. ML:1.3 9.915E-5 1.22 AML other m 2020-11-28T11:35:40.86
IV.NRCA.HHN. ML:1.1 4.13E-5 0.38 AML other m 2020-11-28T11:35:44.85
IV.NRCA.HHE. ML:1.2 5.255E-5 0.48 AML other m 2020-11-28T11:35:45.68
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download