Earthquake with magnitude of ML 1.2 on date 28-10-2020 and time 00:58:22 (Italy) in region 7 km W Cittareale (RI)

A magnitude ML 1.2 earthquake occured in region: 7 km W Cittareale (RI), on

  • 27-10-2020 23:58:22 (UTC)
  • 28-10-2020 00:58:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.59, 13.09 at 11 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
Cittareale RI 7 482 482
Posta RI 8 694 1176
Borbona RI 9 617 1793
Leonessa RI 11 2435 4228
Monteleone di Spoleto PG 13 599 4827
Montereale AQ 15 2581 7408
Cascia PG 16 3217 10625
Micigliano RI 16 127 10752
Amatrice RI 17 2657 13409
Accumoli RI 18 667 14076
Poggiodomo PG 18 117 14193
Cagnano Amiterno AQ 18 1369 15562
Poggio Bustone RI 19 2055 17617
Capitignano AQ 19 665 18282
Antrodoco RI 19 2588 20870
Polino TR 20 233 21103

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Terni (111501 inhabitants)
37 Km NW of L'Aquila (69753 inhabitants)
51 Km W of Teramo (54892 inhabitants)
51 Km SE of Foligno (57155 inhabitants)
72 Km NE of Guidonia Montecelio (88673 inhabitants)
74 Km NE of Tivoli (56533 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
83 Km E of Viterbo (67173 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
92 Km NE of Roma (2864731 inhabitants)
93 Km W of Chieti (51815 inhabitants)
93 Km W of Pescara (121014 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 2020-10-27
23:58:22
42.59 13.09 11 2020-10-28
00:25:10
Sala Sismica INGV-Roma 84191791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-27 23:58:22 ± 0.08
Latitude 42.59 ± 0.00
Longitude 13.09 ± 0.00
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84191791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 335
Semi-minor axis of confidence ellipse (meter) 158
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 115
Circular confidence region, given by single value of horizontal uncertainty (meter) 330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.38041
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 84191791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-28 00:25:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PTRJ.HNZ. 2020-10-27T23:58:49.80 3.0 undecidable manual Pn -0.47 0
IV.MPAG.EHZ. 2020-10-27T23:58:43.22 3.0 undecidable manual P 0.25 0
IV.MMO1.HNE. 2020-10-27T23:58:36.05 0.6 undecidable manual S 30 0.3543 50 0.16 46
IV.TERO.HHZ. 2020-10-27T23:58:36.31 0.6 undecidable manual S 85 0.3804 50 -0.36 45
IV.RCAV.EHZ. 2020-10-27T23:58:34.91 3.0 undecidable manual P -2.48 0
IV.MTRA.HNE. 2020-10-27T23:58:33.35 0.3 undecidable manual S 54 0.2806 50 -0.35 70
IV.NRCA.HHZ. 2020-10-27T23:58:32.14 0.6 undecidable manual S 5 0.2428 50 -0.44 46
IV.SMA1.EHN. 2020-10-27T23:58:30.91 0.6 undecidable manual S 78 0.1862 50 0 49
IV.MMO1.HNE. 2020-10-27T23:58:30.33 0.3 undecidable manual P 30 0.3543 50 -0.05 72
IV.TERO.HHZ. 2020-10-27T23:58:30.64 0.3 undecidable manual P 85 0.3804 50 -0.2 70
IV.MTRA.HNE. 2020-10-27T23:58:29.35 0.3 undecidable manual P 54 0.2806 50 0.23 69
IV.T1299.HNN. 2020-10-27T23:58:29.71 0.6 undecidable manual S 73 0.1493 123 -0.01 50
IV.NRCA.HHZ. 2020-10-27T23:58:28.31 0.1 undecidable manual P 5 0.2428 50 -0.17 96
IV.ARRO.EHZ. 2020-10-27T23:58:28.35 0.1 undecidable manual P 267 0.2374 50 -0.04 98
IV.RM33.EHZ. 2020-10-27T23:58:28.79 0.3 undecidable manual S 131 0.1241 128 -0.15 72
IV.SMA1.EHN. 2020-10-27T23:58:27.67 0.1 undecidable manual P 78 0.1862 50 0.16 95
IV.LNSS.HHZ. 2020-10-27T23:58:26.86 0.3 undecidable manual S 288 0.0369 159 -0.01 75
IV.T1299.HNN. 2020-10-27T23:58:26.97 0.1 undecidable manual P 73 0.1493 123 0.14 97
IV.RM33.EHZ. 2020-10-27T23:58:26.45 0.1 undecidable manual P 131 0.1241 128 0.08 100
IV.LNSS.HHZ. 2020-10-27T23:58:25.34 0.1 undecidable manual P 288 0.0369 159 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:1.1 0.0002185 1.08 AML other m 2020-10-27T23:58:26.43
IV.LNSS.HHE. ML:1.3 0.0002995 0.4 AML other m 2020-10-27T23:58:27.03
IV.PTRJ.HNN. ML:3.5 0.00114 0.6 AML other m 2020-10-27T23:59:00.54
IV.PTRJ.HNE. ML:3.3 0.000732 0.42 AML other m 2020-10-27T23:59:26.49
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