Earthquake with magnitude of ML 0.5 on date 02-10-2020 and time 01:30:34 (Italy) in region 5 km N Accumoli (RI)

A magnitude ML 0.5 earthquake occured in region: 5 km N Accumoli (RI), on

  • 01-10-2020 23:30:34 (UTC)
  • 02-10-2020 01:30:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.739, 13.246 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Accumoli RI 5 667 667
Arquata del Tronto AP 6 1178 1845
Amatrice RI 13 2657 4502
Montegallo AP 14 523 5025
Norcia PG 14 4957 9982
Acquasanta Terme AP 14 2916 12898
Cittareale RI 15 482 13380
Castelsantangelo sul Nera MC 19 281 13661
Cascia PG 19 3217 16878
Montemonaco AP 19 604 17482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
45 Km N of L'Aquila (69753 inhabitants)
50 Km E of Foligno (57155 inhabitants)
53 Km E of Terni (111501 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
87 Km NW of Chieti (51815 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
100 Km E of Viterbo (67173 inhabitants)
100 Km S of Ancona (100861 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 0.5 2020-10-01
23:30:34
42.7393 13.2462 11 2021-02-26
14:55:59
Bollettino Sismico Italiano INGV 83806201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-01 23:30:34 ± 0.05
Latitude 42.7393 ± 0.0027
Longitude 13.2462 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83806201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 381
Semi-minor axis of confidence ellipse (meter) 175
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 240
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
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) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.10792
Epicentral distance of station farthest from the epicenter (degree) 0.31926
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:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 83806201
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-15 14:30:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2020-10-01T23:30:46.72 0.3 undecidable manual S 339 0.3193 50 0.25 69
IV.TERO.HHZ. 2020-10-01T23:30:45.33 0.3 undecidable manual S 114 0.2878 50 -0.2 70
IV.GAVE.EHN. 2020-10-01T23:30:44.80 0.3 undecidable manual S 260 0.2626 50 0 73
IV.CAMP.HHE. 2020-10-01T23:30:43.91 0.3 undecidable manual S 149 0.2356 50 -0.1 72
IV.MC2.EHZ. 2020-10-01T23:30:42.26 0.3 undecidable manual S 346 0.1772 50 0 75
IV.LNSS.HNZ. 2020-10-01T23:30:42.82 0.3 undecidable manual S 228 0.2032 50 -0.22 71
IV.FDMO.HHZ. 2020-10-01T23:30:41.52 0.1 undecidable manual P 339 0.3193 50 0.11 94
IV.MMO1.EHZ. 2020-10-01T23:30:41.96 0.3 undecidable manual S 20 0.1709 50 -0.1 73
IV.NRCA.HHZ. 2020-10-01T23:30:40.50 0.3 undecidable manual S 314 0.1349 126 -0.43 69
IV.GAVE.EHN. 2020-10-01T23:30:40.83 0.6 undecidable manual P 260 0.2626 50 0.38 45
IV.T1299.HNN. 2020-10-01T23:30:40.27 0.3 undecidable manual S 166 0.1079 132 0.14 73
IV.SMA1.EHZ. 2020-10-01T23:30:40.51 0.3 undecidable manual S 149 0.1268 128 -0.17 73
IV.TERO.HHZ. 2020-10-01T23:30:40.96 0.3 undecidable manual P 114 0.2878 50 0.09 72
IV.LNSS.HNZ. 2020-10-01T23:30:39.53 0.6 undecidable manual P 228 0.2032 50 0.09 48
IV.CAMP.HHE. 2020-10-01T23:30:39.91 0.1 undecidable manual P 149 0.2356 50 -0.08 97
IV.SMA1.EHZ. 2020-10-01T23:30:38.17 0.1 undecidable manual P 149 0.1268 128 0.1 98
IV.NRCA.HHZ. 2020-10-01T23:30:38.23 0.1 positive manual P 314 0.1349 126 0.01 100
IV.MMO1.EHZ. 2020-10-01T23:30:38.96 0.1 undecidable manual P 20 0.1709 50 0.09 98
IV.MC2.EHZ. 2020-10-01T23:30:38.91 0.1 undecidable manual P 346 0.1772 50 -0.08 98
IV.T1299.HNN. 2020-10-01T23:30:37.98 0.1 undecidable manual P 166 0.1079 132 0.22 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.8 6.48E-5 0.1 AML other m 2020-10-01T23:30:40.76
IV.NRCA.HHE. ML:1 8.615E-5 0.1 AML other m 2020-10-01T23:30:40.89
IV.SMA1.EHN. ML:0.3 1.98778E-5 1.2544 AML other m 2020-10-01T23:30:40.62
IV.SMA1.EHE. ML:0.2 1.6965755E-5 0.64 AML other m 2020-10-01T23:30:40.99
IV.TERO.HHN. ML:0.4 9.4336455E-6 0.3968 AML other m 2020-10-01T23:30:46.09
IV.TERO.HHE. ML:0.4 9.9507445E-6 0.5888 AML other m 2020-10-01T23:30:46.09
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