Earthquake with magnitude of ML 0.8 on date 19-12-2020 and time 17:16:25 (Italy) in region 5 km NW Accumoli (RI)

A magnitude ML 0.8 earthquake occured in region: 5 km NW Accumoli (RI), on

  • 19-12-2020 16:16:25 (UTC)
  • 19-12-2020 17:16:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.73, 13.208 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 9 1178 1845
Norcia PG 12 4957 6802
Amatrice RI 13 2657 9459
Cittareale RI 13 482 9941
Cascia PG 16 3217 13158
Montegallo AP 16 523 13681
Acquasanta Terme AP 17 2916 16597
Castelsantangelo sul Nera MC 19 281 16878

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
45 Km NW of L'Aquila (69753 inhabitants)
48 Km SE of Foligno (57155 inhabitants)
50 Km E of Terni (111501 inhabitants)
79 Km SE of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
88 Km W of Pescara (121014 inhabitants)
89 Km W of Chieti (51815 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km NE of Tivoli (56533 inhabitants)
97 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 0.8 2020-12-19
16:16:25
42.7297 13.2075 11 2021-02-26
14:56:14
Bollettino Sismico Italiano INGV 86207671
Reviewed
Rev100
ML 0.8 2020-12-19
16:16:25
42.7307 13.2117 11 2020-12-19
16:30:14
Sala Sismica INGV-Roma 85550781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-19 16:16:25 ± 0.1
Latitude 42.7297 ± 0.0054
Longitude 13.2075 ± 0.0061
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 86207671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 553
Semi-minor axis of confidence ellipse (meter) 454
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 18
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 182
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 12
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) 0.36153
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 86207671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-01 02:39:12

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 85550781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-19 16:30:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HAGA.HHZ. 2020-12-19T16:17:46.77 3.0 undecidable manual Sn -0.16 0
IV.ZCCA.HHZ. 2020-12-19T16:17:41.76 3.0 undecidable manual Sg 2.47 0
IV.VOBA.HNZ. 2020-12-19T16:17:19.68 3.0 undecidable manual Pg 8.2 0
IV.MTMR.EHZ. 2020-12-19T16:17:06.05 3.0 undecidable manual Sg 10.31 0
IV.SBPO.HNZ. 2020-12-19T16:16:58.24 3.0 undecidable manual Pn -4.33 0
IV.HAGA.HHZ. 2020-12-19T16:16:56.47 3.0 undecidable manual Pn -1 0
IV.VAGA.HHZ. 2020-12-19T16:16:52.87 3.0 undecidable manual Sg 7.96 0
XK.GIZZ.HHZ. 2020-12-19T16:16:45.21 3.0 negative manual Pn -3.31 0
IV.FIR.HHZ. 2020-12-19T16:16:44.62 3.0 undecidable manual Pg -0.19 0
IV.CSP1.EHZ. 2020-12-19T16:16:38.86 0.3 undecidable manual S 360 0.3615 50 0.3 69
IV.FDMO.HHZ. 2020-12-19T16:16:37.14 0.3 undecidable manual S 344 0.3193 50 -0.15 72
IV.GAVE.EHZ. 2020-12-19T16:16:34.69 0.3 undecidable manual S 261 0.2329 50 -0.05 75
IV.MC2.EHZ. 2020-12-19T16:16:33.38 0.6 undecidable manual S 356 0.1826 118 0.15 49
IT.LRNO.HNZ. 2020-12-19T16:16:33.55 3.0 negative manual P 2.19 0
IV.CSP1.EHZ. 2020-12-19T16:16:32.97 0.3 undecidable manual P 360 0.3615 50 0.01 74
IV.NRCA.HNZ. 2020-12-19T16:16:31.21 0.3 undecidable manual S 327 0.1241 128 -0.14 75
IV.MTRA.EHZ. 2020-12-19T16:16:31.69 0.3 undecidable manual S 79 0.1412 124 -0.19 74
IV.FDMO.HHZ. 2020-12-19T16:16:31.95 0.1 undecidable manual P 344 0.3193 50 -0.27 94
IV.GAVE.EHZ. 2020-12-19T16:16:30.88 0.3 undecidable manual P 261 0.2329 50 0.13 74
IV.MTRA.EHZ. 2020-12-19T16:16:29.24 0.1 undecidable manual P 79 0.1412 124 0.14 100
IV.MC2.EHZ. 2020-12-19T16:16:29.79 0.6 undecidable manual P 356 0.1826 118 -0.09 50
IV.NRCA.HNZ. 2020-12-19T16:16:28.94 0.1 undecidable manual P 327 0.1241 128 0.15 100
IV.VVLD.HHZ. 2020-12-19T16:16:22.33 3.0 undecidable manual P 0.86 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.9 7.255E-5 0.16 AML other m 2020-12-19T16:16:31.34
IV.NRCA.HHE. ML:1.2 0.0001685 0.12 AML other m 2020-12-19T16:16:31.38
IV.MTRA.EHE. ML:0.5 3.085E-5 1.64 AML other m 2020-12-19T16:16:31.93
IV.MTRA.EHN. ML:0.6 3.835E-5 0.16 AML other m 2020-12-19T16:16:32.34
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