Earthquake with magnitude of ML 0.5 on date 19-12-2020 and time 03:40:10 (Italy) in region 3 km W Accumoli (RI)

A magnitude ML 0.5 earthquake occured in region: 3 km W Accumoli (RI), on

  • 19-12-2020 02:40:10 (UTC)
  • 19-12-2020 03:40:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.685, 13.217 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 3 667 667
Amatrice RI 9 2657 3324
Cittareale RI 9 482 3806
Arquata del Tronto AP 12 1178 4984
Norcia PG 16 4957 9941
Cascia PG 17 3217 13158
Montereale AQ 18 2581 15739
Acquasanta Terme AP 18 2916 18655
Campotosto AQ 19 542 19197
Capitignano AQ 20 665 19862
Montegallo AP 20 523 20385

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NW of L'Aquila (69753 inhabitants)
40 Km W of Teramo (54892 inhabitants)
49 Km E of Terni (111501 inhabitants)
52 Km SE of Foligno (57155 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
86 Km W of Chieti (51815 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
96 Km E of Viterbo (67173 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 2020-12-19
02:40:10
42.6852 13.2168 11 2021-02-26
14:56:11
Bollettino Sismico Italiano INGV 85599711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-19 02:40:10 ± 0.06
Latitude 42.6852 ± 0.0045
Longitude 13.2168 ± 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 85599711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 453
Semi-minor axis of confidence ellipse (meter) 394
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 182
Circular confidence region, given by single value of horizontal uncertainty (meter) 450
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.07015
Epicentral distance of station farthest from the epicenter (degree) 0.48923
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 85599711
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-21 12:17:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CESI.HHE. 2020-12-19T02:40:24.81 0.6 undecidable manual S 324 0.393 50 0.43 44
IV.FDMO.HHN. 2020-12-19T02:40:23.63 0.6 undecidable manual S 345 0.3633 50 0.12 47
IV.MOMA.HNZ. 2020-12-19T02:40:20.45 0.6 undecidable manual P 284 0.4892 50 0.41 43
IV.TERO.HHZ. 2020-12-19T02:40:20.89 0.3 undecidable manual S 102 0.2914 50 -0.48 67
IV.GAVE.HNZ. 2020-12-19T02:40:19.51 0.6 undecidable manual S 272 0.2374 50 -0.25 47
IV.MMO1.EHZ. 2020-12-19T02:40:19.55 0.3 undecidable manual S 21 0.2284 50 0.04 74
IV.MC2.EHZ. 2020-12-19T02:40:19.68 0.3 undecidable manual S 355 0.2266 50 0.22 71
IV.CESI.HHE. 2020-12-19T02:40:18.66 0.3 undecidable manual P 324 0.393 50 0.27 68
IV.LNSS.HHZ. 2020-12-19T02:40:17.01 0.3 undecidable manual S 238 0.1538 122 -0.22 72
IV.NRCA.HHZ. 2020-12-19T02:40:17.32 0.3 undecidable manual S 333 0.1664 120 -0.32 71
IV.FDMO.HHN. 2020-12-19T02:40:17.82 0.1 undecidable manual P 345 0.3633 50 -0.07 95
IV.TERO.HHZ. 2020-12-19T02:40:16.62 0.3 undecidable manual P 102 0.2914 50 -0.04 73
IV.MTRA.HNZ. 2020-12-19T02:40:16.85 0.3 undecidable manual S 62 0.1502 123 -0.26 72
IV.SMA1.EHZ. 2020-12-19T02:40:16.04 0.3 undecidable manual S 122 0.1025 133 0.37 71
IV.MMO1.EHZ. 2020-12-19T02:40:15.57 0.3 undecidable manual P 21 0.2284 50 -0.01 74
IV.MC2.EHZ. 2020-12-19T02:40:15.68 0.3 undecidable manual P 355 0.2266 50 0.12 73
IV.GAVE.HNZ. 2020-12-19T02:40:15.34 0.3 undecidable manual P 272 0.2374 50 -0.39 69
IV.T1299.HNZ. 2020-12-19T02:40:14.91 0.3 undecidable manual S 137 0.0701 144 0.07 76
IV.LNSS.HHZ. 2020-12-19T02:40:14.26 0.3 undecidable manual P 238 0.1538 122 -0.01 75
IV.NRCA.HHZ. 2020-12-19T02:40:14.53 0.1 negative manual P 333 0.1664 120 0.03 100
IV.MTRA.HNZ. 2020-12-19T02:40:13.85 0.3 undecidable manual P 62 0.1502 123 -0.35 70
IV.SMA1.EHZ. 2020-12-19T02:40:13.70 0.3 undecidable manual P 122 0.1025 133 0.33 71
IV.T1299.HNZ. 2020-12-19T02:40:13.13 0.3 undecidable manual P 137 0.0701 144 0.24 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0.4 2.325E-5 0.8 AML other m 2020-12-19T02:40:16.49
IV.SMA1.EHN. ML:0.4 2.7E-5 1.18 AML other m 2020-12-19T02:40:16.26
IV.NRCA.HHE. ML:1.4 0.000203 0.14 AML other m 2020-12-19T02:40:17.67
IV.NRCA.HHN. ML:0.8 5.715E-5 0.14 AML other m 2020-12-19T02:40:17.79
IV.LNSS.HHE. ML:0.6 3.055E-5 0.24 AML other m 2020-12-19T02:40:17.89
IV.LNSS.HHN. ML:0.7 4.2E-5 1.22 AML other m 2020-12-19T02:40:17.35
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