Earthquake with magnitude of ML 1.2 on date 01-10-2020 and time 03:30:33 (Italy) in region 4 km SW Leonessa (RI)

A magnitude ML 1.2 earthquake occured in region: 4 km SW Leonessa (RI), on

  • 01-10-2020 01:30:33 (UTC)
  • 01-10-2020 03:30:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.54, 12.93 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Leonessa RI 4 2435 2435
Poggio Bustone RI 5 2055 4490
Rivodutri RI 7 1253 5743
Cantalice RI 8 2755 8498
Morro Reatino RI 8 373 8871
Polino TR 9 233 9104
Labro RI 11 374 9478
Colli sul Velino RI 13 533 10011
Monteleone di Spoleto PG 13 599 10610
Posta RI 14 694 11304
Micigliano RI 14 127 11431
Arrone TR 14 2763 14194
Ferentillo TR 15 1913 16107
Montefranco TR 15 1276 17383
Rieti RI 16 47698 65081
Greccio RI 16 1558 66639
Cittaducale RI 17 6828 73467
Borbona RI 17 617 74084
Castel Sant'Angelo RI 18 1308 75392
Borgo Velino RI 18 972 76364
Antrodoco RI 18 2588 78952
Contigliano RI 19 3783 82735
Poggiodomo PG 20 117 82852

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km E of Terni (111501 inhabitants)
43 Km W of L'Aquila (69753 inhabitants)
50 Km SE of Foligno (57155 inhabitants)
62 Km N of Guidonia Montecelio (88673 inhabitants)
64 Km N of Tivoli (56533 inhabitants)
65 Km W of Teramo (54892 inhabitants)
69 Km E of Viterbo (67173 inhabitants)
78 Km SE of Perugia (166134 inhabitants)
80 Km NE of Roma (2864731 inhabitants)
95 Km N of Velletri (53303 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 1.2 2020-10-01
01:30:33
42.54 12.93 12 2020-10-01
01:36:15
Sala Sismica INGV-Roma 83405671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-01 01:30:33 ± 0.03
Latitude 42.54 ± 0.00
Longitude 12.93 ± 0.00
Depth (km) 12 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83405671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 249
Semi-minor axis of confidence ellipse (meter) 42
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 16
Circular confidence region, given by single value of horizontal uncertainty (meter) 250
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.07
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.46495
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 83405671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-01 01:36:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CPGN.EHZ. 2020-10-01T01:31:13.89 3.0 undecidable manual S -2.22 0
IV.PTRJ.HHZ. 2020-10-01T01:31:02.97 3.0 undecidable manual Pn 1 0
IV.MNTT.EHZ. 2020-10-01T01:30:48.34 3.0 positive manual P 0.44 0
IV.CESX.HHZ. 2020-10-01T01:30:43.93 0.6 undecidable manual S 286 0.2644 93 -0.04 48
IV.RM33.EHZ. 2020-10-01T01:30:42.24 0.6 undecidable manual S 97 0.2095 95 -0.09 49
IV.MMO1.EHZ. 2020-10-01T01:30:42.99 0.6 negative manual P 38 0.4649 91 -0.05 47
IV.MOMA.HHZ. 2020-10-01T01:30:41.78 1.0 positive manual P 315 0.3777 92 0.23 23
IV.GAVE.EHZ. 2020-10-01T01:30:40.76 0.6 undecidable manual S 350 0.1592 100 -0.1 49
IV.FIAM.HHZ. 2020-10-01T01:30:40.20 0.3 undecidable manual P 153 0.2995 92 -0.01 73
IV.NRCA.HHZ. 2020-10-01T01:30:40.62 0.3 positive manual P 24 0.3265 92 -0.05 72
IV.SMA1.EHZ. 2020-10-01T01:30:40.49 0.1 positive manual P 72 0.3112 92 0.08 95
IV.LNSS.HHZ. 2020-10-01T01:30:39.27 0.6 undecidable manual S 50 0.1043 119 -0.05 50
IV.ARRO.EHZ. 2020-10-01T01:30:39.95 0.6 undecidable manual S 290 0.1304 108 -0.07 49
IV.CESX.HHZ. 2020-10-01T01:30:39.55 0.6 negative manual P 286 0.2644 93 -0.06 48
IV.RM33.EHZ. 2020-10-01T01:30:38.52 1.0 positive manual P 97 0.2095 95 -0.15 24
IV.ARRO.EHZ. 2020-10-01T01:30:37.36 0.1 positive manual P 290 0.1304 108 0.03 100
IV.GAVE.EHZ. 2020-10-01T01:30:37.88 0.1 negative manual P 350 0.1592 100 0.06 98
IV.LNSS.HHZ. 2020-10-01T01:30:37.00 0.1 negative manual P 50 0.1043 119 0.07 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.8 0.000652 0.28 AML other m 2020-10-01T01:30:39.49
IV.LNSS.HHN. ML:1.8 0.000741 0.3 AML other m 2020-10-01T01:30:39.40
IV.ARRO.EHE. ML:1.3 0.0001715 1.84 AML other m 2020-10-01T01:30:39.04
IV.ARRO.EHN. ML:1.4 0.000207 0.96 AML other m 2020-10-01T01:30:40.05
IV.GAVE.EHE. ML:1.5 0.0002235 0.88 AML other m 2020-10-01T01:30:41.13
IV.GAVE.EHN. ML:1.5 0.0002335 0.12 AML other m 2020-10-01T01:30:41.42
IV.RM33.EHE. ML:1.2 9.11E-5 0.1 AML other m 2020-10-01T01:30:42.70
IV.RM33.EHN. ML:1.1 6.95E-5 0.24 AML other m 2020-10-01T01:30:42.84
IV.FIAM.HHE. ML:0.4 9.715E-6 0.1 AML other m 2020-10-01T01:30:45.92
IV.SMA1.EHN. ML:1 4.705E-5 0.2 AML other m 2020-10-01T01:30:45.86
IV.SMA1.EHE. ML:1.2 6.765E-5 1.1 AML other m 2020-10-01T01:30:46.05
IV.NRCA.HHE. ML:1.4 8.52E-5 0.14 AML other m 2020-10-01T01:30:46.06
IV.CESX.HHE. ML:0.8 3.195E-5 1.32 AML other m 2020-10-01T01:30:46.27
IV.CESX.HHN. ML:0.8 2.975E-5 0.16 AML other m 2020-10-01T01:30:46.76
IV.FIAM.HHN. ML:0.4 8.985E-6 1.38 AML other m 2020-10-01T01:30:46.21
IV.NRCA.HHN. ML:1.1 4.7E-5 0.82 AML other m 2020-10-01T01:30:47.82
IV.MOMA.HHN. ML:1.1 3.92E-5 0.5 AML other m 2020-10-01T01:30:48.76
IV.MOMA.HHE. ML:1 3.285E-5 0.58 AML other m 2020-10-01T01:30:48.76
IV.CPGN.EHE. ML:1.9 4.12E-5 0.42 AML other m 2020-10-01T01:31:32.27
IV.CPGN.EHN. ML:2.2 8.55E-5 0.42 AML other m 2020-10-01T01:31:33.71
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