Earthquake with magnitude of ML 1.2 on date 02-01-2020 and time 21:14:25 (Italy) in region 3 km NW Castel Ritaldi (PG)

A magnitude ML 1.2 earthquake occured in region: 3 km NW Castel Ritaldi (PG), on

  • 02-01-2020 20:14:25 (UTC)
  • 02-01-2020 21:14:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.85, 12.66 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
Castel Ritaldi PG 3 3278 3278
Montefalco PG 5 5679 8957
Giano dell'Umbria PG 7 3846 12803
Trevi PG 8 8469 21272
Campello sul Clitunno PG 10 2442 23714
Bevagna PG 11 5081 28795
Gualdo Cattaneo PG 11 6155 34950
Foligno PG 13 57155 92105
Massa Martana PG 13 3770 95875
Spoleto PG 14 38218 134093
Spello PG 16 8645 142738
Cannara PG 18 4305 147043
Collazzone PG 19 3473 150516
Vallo di Nera PG 19 364 150880
Sant'Anatolia di Narco PG 19 564 151444
Acquasparta TR 19 4778 156222

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SW of Foligno (57155 inhabitants)
32 Km N of Terni (111501 inhabitants)
36 Km SE of Perugia (166134 inhabitants)
66 Km NE of Viterbo (67173 inhabitants)
82 Km NW of L'Aquila (69753 inhabitants)
88 Km W of Teramo (54892 inhabitants)
93 Km SE of Arezzo (99543 inhabitants)
94 Km N of Guidonia Montecelio (88673 inhabitants)
99 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 1.2 2020-01-02
20:14:25
42.85 12.66 10 2020-01-02
20:19:25
Sala Sismica INGV-Roma 75209061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-02 20:14:25 ± 0.1
Latitude 42.85 ± 0.01
Longitude 12.66 ± 0.02
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75209061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1553
Semi-minor axis of confidence ellipse (meter) 614
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 1550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.58186
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 75209061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-02 20:19:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.VNF1.HGZ. 2020-01-02T20:15:19.20 3.0 undecidable manual Sg 0.11 0
IV.FIR.HHZ. 2020-01-02T20:15:12.57 3.0 undecidable manual S 0.39 0
IV.APEC.HHZ. 2020-01-02T20:14:52.67 3.0 undecidable manual S -0.27 0
IV.SAMA.EHZ. 2020-01-02T20:14:48.29 3.0 undecidable manual P 0.48 0
IV.EL6.EHZ. 2020-01-02T20:14:46.58 0.3 undecidable manual S 34 0.5819 50 0.78 56
IV.LAV9.HNZ. 2020-01-02T20:14:45.28 3.0 undecidable manual P -3.88 0
IV.SNTG.HHZ. 2020-01-02T20:14:42.56 0.3 undecidable manual S 27 0.4578 50 0.43 65
IV.FDMO.HHZ. 2020-01-02T20:14:39.43 0.3 undecidable manual S 59 0.3669 50 -0.03 72
IV.NRCA.HHZ. 2020-01-02T20:14:38.52 0.3 undecidable manual S 92 0.3345 50 0.03 73
IV.ATCC.EHZ. 2020-01-02T20:14:38.44 0.3 undecidable manual S 358 0.339 50 -0.18 70
IV.EL6.EHZ. 2020-01-02T20:14:37.36 0.1 undecidable manual P 34 0.5819 50 -0.02 92
IV.CESI.HHZ. 2020-01-02T20:14:35.14 0.3 undecidable manual S 49 0.2401 50 -0.55 65
IV.SNTG.HHZ. 2020-01-02T20:14:35.23 0.1 undecidable manual P 27 0.4578 50 -0.03 94
IV.GAVE.EHZ. 2020-01-02T20:14:35.64 0.3 undecidable manual S 132 0.232 50 0.2 71
IV.ATCC.EHZ. 2020-01-02T20:14:33.04 0.1 undecidable manual P 358 0.339 50 -0.19 94
IV.FDMO.HHZ. 2020-01-02T20:14:33.67 0.1 undecidable manual P 59 0.3669 50 -0.04 95
IV.NRCA.HHZ. 2020-01-02T20:14:32.93 0.1 undecidable manual P 92 0.3345 50 -0.23 93
IV.GAVE.EHZ. 2020-01-02T20:14:31.35 0.1 undecidable manual P 132 0.232 50 -0.05 98
IV.CESI.HHZ. 2020-01-02T20:14:31.53 0.1 undecidable manual P 49 0.2401 50 -0.01 99
IV.MOMA.HHZ. 2020-01-02T20:14:30.42 0.3 undecidable manual S 237 0.0773 139 0 76
IV.MOMA.HHZ. 2020-01-02T20:14:28.62 0.1 undecidable manual P 237 0.0773 139 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHN. ML:1.1 6.855E-5 0.96 AML other m 2020-01-02T20:14:36.45
IV.GAVE.EHE. ML:1.2 8.855E-5 1.2 AML other m 2020-01-02T20:14:37.21
IV.NRCA.HHE. ML:1.4 8.4E-5 1.86 AML other m 2020-01-02T20:14:39.00
IV.NRCA.HHN. ML:1.3 7.11E-5 0.5 AML other m 2020-01-02T20:14:40.69
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