Earthquake with magnitude of ML 1.1 on date 23-01-2020 and time 17:15:06 (UTC) in region 3 km W Cerreto di Spoleto (PG)

A magnitude ML 1.1 earthquake occured in region: 3 km W Cerreto di Spoleto (PG), on

  • 23-01-2020 17:15:06 (UTC)
  • 23-01-2020 18:15:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.81, 12.88 at 10 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
Cerreto di Spoleto PG 3 1075 1075
Vallo di Nera PG 5 364 1439
Campello sul Clitunno PG 9 2442 3881
Sant'Anatolia di Narco PG 9 564 4445
Sellano PG 10 1079 5524
Scheggino PG 12 461 5985
Poggiodomo PG 12 117 6102
Trevi PG 13 8469 14571
Spoleto PG 15 38218 52789
Cascia PG 15 3217 56006
Preci PG 15 724 56730
Norcia PG 17 4957 61687
Castel Ritaldi PG 17 3278 64965
Monteleone di Spoleto PG 19 599 65564

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SE of Foligno (57155 inhabitants)
34 Km NE of Terni (111501 inhabitants)
52 Km SE of Perugia (166134 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
69 Km W of Teramo (54892 inhabitants)
77 Km NE of Viterbo (67173 inhabitants)
91 Km N of Guidonia Montecelio (88673 inhabitants)
94 Km N of Tivoli (56533 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
Rev 100 ML 1.1 2020-01-23
17:15:06
42.81 12.88 10 2020-01-23
17:22:21
Sala Sismica INGV-Roma 75774351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-23 17:15:06 ± 0.06
Latitude 42.81 ± 0.00
Longitude 12.88 ± 0.01
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75774351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 548
Semi-minor axis of confidence ellipse (meter) 136
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 300
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
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 20
Number of defining phases 20
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) 0.11871
Epicentral distance of station farthest from the epicenter (degree) 0.36602
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 75774351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-23 17:22:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2020-01-23T17:15:20.65 0.3 undecidable manual S 40 0.366 50 0.47 88
IV.MMO1.EHZ. 2020-01-23T17:15:19.45 0.3 undecidable manual S 75 0.3363 50 0.15 95
IV.FDMO.HHZ. 2020-01-23T17:15:17.29 0.6 undecidable manual S 33 0.2698 50 -0.05 65
IV.ARRO.EHE. 2020-01-23T17:15:16.56 0.3 undecidable manual S 201 0.2473 50 -0.12 96
IV.FEMA.HNE. 2020-01-23T17:15:15.04 0.3 undecidable manual S 39 0.1934 115 0.15 97
IV.NRCA.HHZ. 2020-01-23T17:15:14.03 0.3 undecidable manual S 82 0.17 118 -0.05 100
IV.CSP1.EHZ. 2020-01-23T17:15:14.37 0.3 undecidable manual P 40 0.366 50 -0.09 95
IT.MTCL.HGE. 2020-01-23T17:15:14.95 0.3 undecidable manual S 25 0.2014 114 -0.21 96
IV.CESI.HHZ. 2020-01-23T17:15:14.89 0.3 undecidable manual S 4 0.1943 115 -0.03 100
IV.CESX.HHE. 2020-01-23T17:15:13.20 0.3 undecidable manual P 227 0.2977 50 -0.11 96
IV.MMO1.EHZ. 2020-01-23T17:15:13.94 0.3 undecidable manual P 75 0.3363 50 -0.01 97
IV.FDMO.HHZ. 2020-01-23T17:15:12.14 0.6 undecidable manual P 33 0.2698 50 -0.69 55
IV.ARRO.EHE. 2020-01-23T17:15:12.38 0.3 undecidable manual P 201 0.2473 50 -0.07 98
IV.MOMA.HNN. 2020-01-23T17:15:12.50 0.3 undecidable manual P 268 0.2302 50 0.34 92
IV.GAVE.EHZ. 2020-01-23T17:15:12.30 0.6 undecidable manual S 177 0.1187 127 -0.12 67
IV.NRCA.HHZ. 2020-01-23T17:15:11.04 0.3 undecidable manual P 82 0.17 118 0.1 98
IT.MTCL.HGE. 2020-01-23T17:15:11.54 0.3 undecidable manual P 25 0.2014 114 -0.03 100
IV.CESI.HHZ. 2020-01-23T17:15:11.55 0.3 undecidable manual P 4 0.1943 115 0.12 97
IV.FEMA.HNE. 2020-01-23T17:15:11.11 0.3 undecidable manual P 39 0.1934 115 -0.3 94
IV.GAVE.EHZ. 2020-01-23T17:15:10.25 0.3 undecidable manual P 177 0.1187 127 0.27 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.3 0.0002085 0.34 AML other m 2020-01-23T17:15:12.65
IV.GAVE.EHN. ML:1.2 0.00016325 0.34 AML other m 2020-01-23T17:15:12.75
IV.NRCA.HHN. ML:1 7.63E-5 0.5 AML other m 2020-01-23T17:15:14.21
IV.NRCA.HHE. ML:1.1 9.8E-5 0.1 AML other m 2020-01-23T17:15:14.34
IV.GAVE.HNE. ML:1.2 0.0001613326 0.128 AML other m 2020-01-23T17:15:12.88
IV.GAVE.HNN. ML:0.9 9.13205E-5 1.024 AML other m 2020-01-23T17:15:12.90
IV.CESI.HHE. ML:0.5 2.22976255E-5 0.1792 AML other m 2020-01-23T17:15:16.10
IV.CESI.HHN. ML:0.9 5.8152515E-5 0.128 AML other m 2020-01-23T17:15:15.19
IV.CSP1.EHE. ML:0.9 2.6192531E-5 0.6272 AML other m 2020-01-23T17:15:20.68
IV.CSP1.EHN. ML:0.9 2.68666E-5 1.1904 AML other m 2020-01-23T17:15:21.04
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