Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 03-12-2019 and time 00:50:05 (Italy) in region 7 km NW Accumoli (RI)

A magnitude ML 1.4 earthquake occured in region: 7 km NW Accumoli (RI), on

  • 02-12-2019 23:50:05 (UTC)
  • 03-12-2019 00:50:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7470, 13.2020 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.

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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 7 667 667
Arquata del Tronto AP 8 1178 1845
Norcia PG 10 4957 6802
Cittareale RI 15 482 7284
Amatrice RI 15 2657 9941
Montegallo AP 15 523 10464
Cascia PG 16 3217 13681
Castelsantangelo sul Nera MC 17 281 13962
Acquasanta Terme AP 17 2916 16878
Montemonaco AP 20 604 17482
Preci PG 20 724 18206

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Teramo (54892 inhabitants)
47 Km NW of L'Aquila (69753 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
50 Km E of Terni (111501 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
89 Km W of Pescara (121014 inhabitants)
91 Km W of Chieti (51815 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km NE of Tivoli (56533 inhabitants)
97 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
Reviewed
Rev100 		ML 1.4 2019-12-02
23:50:05		 42.7467 13.2025 11 2019-12-03
00:11:55		 Sala Sismica INGV-Roma 74262221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-02 23:50:05 ± 0.03
Latitude 42.7467 ± 0.0018
Longitude 13.2025 ± 0.0024
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 74262221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 241
Semi-minor axis of confidence ellipse (meter) 170
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 68
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0.10792
Epicentral distance of station farthest from the epicenter (degree) 0.32016
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 74262221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-03 00:11:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2019-12-02T23:50:16.53 1.0 undecidable manual S 344 33.4443 50 -0.11 24
IV.LNSS.HHZ. 2019-12-02T23:50:13.20 0.6 undecidable manual S 220 20.7681 50 -0.04 50
IV.MMO1.EHZ. 2019-12-02T23:50:12.97 0.6 undecidable manual S 31 19.7691 50 0 50
IV.SMA1.EHZ. 2019-12-02T23:50:12.06 0.6 undecidable manual S 140 16.872 123 -0.11 49
IV.MTRA.EHZ. 2019-12-02T23:50:11.78 0.6 undecidable manual S 86 15.873 125 -0.1 50
IV.FDMO.HHZ. 2019-12-02T23:50:11.73 0.1 undecidable manual P 344 33.4443 50 -0.09 97
IV.TERO.HHZ. 2019-12-02T23:50:11.99 0.6 positive manual P 113 35.5422 50 -0.13 48
IV.RM33.EHZ. 2019-12-02T23:50:10.72 1.0 undecidable manual P 178 26.3514 50 0 25
IV.NRCA.HHZ. 2019-12-02T23:50:10.67 0.6 undecidable manual S 323 11.9769 132 -0.17 49
IV.MC2.EHZ. 2019-12-02T23:50:09.60 0.6 positive manual P 357 18.2706 50 0.13 49
IV.MTRA.EHZ. 2019-12-02T23:50:09.15 0.1 positive manual P 86 15.873 125 0.08 100
IV.MMO1.EHZ. 2019-12-02T23:50:09.75 0.1 positive manual P 31 19.7691 50 0.06 100
IV.SMA1.EHZ. 2019-12-02T23:50:09.32 0.3 undecidable manual P 140 16.872 123 0.09 75
IV.LNSS.HHZ. 2019-12-02T23:50:09.96 1.0 negative manual P 220 20.7681 50 0.11 25
IV.NRCA.HHZ. 2019-12-02T23:50:08.56 0.1 negative manual P 323 11.9769 132 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.4 0.0002525 0.84 AML other m 2019-12-02T23:50:10.38
IV.NRCA.HHE. ML:1.6 0.00045999999999999996 0.16 AML other m 2019-12-02T23:50:10.86
IV.MTRA.EHN. ML:1.2 0.00012395 0.22 AML other m 2019-12-02T23:50:12.41
IV.MTRA.EHE. ML:1.3 0.000193 0.76 AML other m 2019-12-02T23:50:12.63
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