Earthquake with magnitude of ML 0.6 on date 30-09-2020 and time 03:46:55 (Italy) in region 3 km NW Arquata del Tronto (AP)

A magnitude ML 0.6 earthquake occured in region: 3 km NW Arquata del Tronto (AP), on

  • 30-09-2020 01:46:55 (UTC)
  • 30-09-2020 03:46:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.795, 13.276 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
Arquata del Tronto AP 3 1178 1178
Montegallo AP 7 523 1701
Accumoli RI 11 667 2368
Acquasanta Terme AP 11 2916 5284
Montemonaco AP 13 604 5888
Norcia PG 15 4957 10845
Castelsantangelo sul Nera MC 15 281 11126
Montefortino FM 17 1178 12304
Roccafluvione AP 18 2010 14314
Amatrice RI 18 2657 16971
Palmiano AP 19 196 17167
Valle Castellana TE 19 977 18144

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km W of Teramo (54892 inhabitants)
50 Km E of Foligno (57155 inhabitants)
50 Km N of L'Aquila (69753 inhabitants)
58 Km E of Terni (111501 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
80 Km E of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
88 Km NW of Chieti (51815 inhabitants)
94 Km S of Ancona (100861 inhabitants)
99 Km NE of Guidonia Montecelio (88673 inhabitants)
100 Km NE of Tivoli (56533 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 0.6 2020-09-30
01:46:55
42.7948 13.2765 11 2020-09-30
02:14:06
Sala Sismica INGV-Roma 83374281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-30 01:46:55 ± 0.06
Latitude 42.7948 ± 0.0027
Longitude 13.2765 ± 0.0061
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83374281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 476
Semi-minor axis of confidence ellipse (meter) 279
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 78
Circular confidence region, given by single value of horizontal uncertainty (meter) 480
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
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) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.09623
Epicentral distance of station farthest from the epicenter (degree) 0.30127
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:0.6

Field Value
Value 0.6
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 83374281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-30 02:14:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2020-09-30T01:47:07.13 0.3 undecidable manual S 350 0.3013 50 -0.07 72
IV.LNSS.HNN. 2020-09-30T01:47:06.18 0.3 undecidable manual S 222 0.259 50 0.24 70
IV.FDMO.HHZ. 2020-09-30T01:47:06.23 0.3 undecidable manual S 330 0.2779 50 -0.29 69
IV.MF5.EHZ. 2020-09-30T01:47:05.80 0.3 undecidable manual S 35 0.2347 50 0.57 65
IV.SMA1.EHZ. 2020-09-30T01:47:03.15 0.3 undecidable manual S 165 0.17 50 -0.16 73
IV.T1299.EHE. 2020-09-30T01:47:03.30 0.3 undecidable manual S 179 0.161 50 0.27 71
IV.MC2.EHZ. 2020-09-30T01:47:02.45 0.3 undecidable manual S 331 0.1331 127 0.27 72
IV.CSP1.EHZ. 2020-09-30T01:47:02.10 0.1 undecidable manual P 350 0.3013 50 -0.28 92
IV.FDMO.HHZ. 2020-09-30T01:47:01.66 0.1 undecidable manual P 330 0.2779 50 -0.33 92
IV.MTRA.EHZ. 2020-09-30T01:47:01.06 0.3 undecidable manual S 113 0.0962 136 -0.05 75
IV.MMO1.EHZ. 2020-09-30T01:47:01.49 0.3 undecidable manual S 19 0.1106 132 -0.03 76
IV.NRCA.HHZ. 2020-09-30T01:47:01.98 0.3 undecidable manual S 288 0.125 128 0.04 75
IV.MF5.EHZ. 2020-09-30T01:47:01.39 0.1 undecidable manual P 35 0.2347 50 0.15 96
IV.LNSS.HNN. 2020-09-30T01:47:01.60 0.1 undecidable manual P 222 0.259 50 -0.05 97
IV.T1299.EHE. 2020-09-30T01:47:00.12 0.6 undecidable manual P 179 0.161 50 0.15 49
IV.SMA1.EHZ. 2020-09-30T01:47:00.05 0.1 undecidable manual P 165 0.17 50 -0.08 98
IV.NRCA.HHZ. 2020-09-30T01:46:59.41 0.1 undecidable manual P 288 0.125 128 0.07 100
IV.MC2.EHZ. 2020-09-30T01:46:59.58 0.1 undecidable manual P 331 0.1331 127 0.1 99
IV.MMO1.EHZ. 2020-09-30T01:46:59.16 0.1 undecidable manual P 19 0.1106 132 0.06 100
IV.MTRA.EHZ. 2020-09-30T01:46:58.47 0.3 undecidable manual P 113 0.0962 136 -0.39 70
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.1 0.0001215 0.18 AML other m 2020-09-30T01:47:02.14
IV.NRCA.HHE. ML:0.9 8.065E-5 0.7 AML other m 2020-09-30T01:47:02.51
IV.FDMO.HHN. ML:0.3 1.17E-5 1 AML other m 2020-09-30T01:47:06.59
IV.FDMO.HHE. ML:0.3 1.011E-5 0.42 AML other m 2020-09-30T01:47:06.62
IV.NRCA.HNE. ML:0.9 8.070883E-5 0.1496 AML other m 2020-09-30T01:47:02.51
IV.NRCA.HNN. ML:1.1 0.000130194895 0.1504 AML other m 2020-09-30T01:47:02.23
IV.SMA1.EHE. ML:0.3 1.33214215E-5 0.16 AML other m 2020-09-30T01:47:03.41
IV.SMA1.EHN. ML:0.3 1.552368E-5 0.3 AML other m 2020-09-30T01:47:03.42
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download