Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 06-12-2019 and time 20:59:07 (UTC) in region 9 km W Accumoli (RI)

A magnitude ML 0.5 earthquake occured in region: 9 km W Accumoli (RI), on

  • 06-12-2019 20:59:07 (UTC)
  • 06-12-2019 21:59:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7140, 13.1420 at 12 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 9 667 667
Norcia PG 10 4957 5624
Cascia PG 11 3217 8841
Cittareale RI 11 482 9323
Arquata del Tronto AP 14 1178 10501
Amatrice RI 15 2657 13158
Monteleone di Spoleto PG 17 599 13757
Poggiodomo PG 17 117 13874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Terni (111501 inhabitants)
45 Km SE of Foligno (57155 inhabitants)
45 Km NW of L'Aquila (69753 inhabitants)
46 Km W of Teramo (54892 inhabitants)
75 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
88 Km NE of Tivoli (56533 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
92 Km W of Pescara (121014 inhabitants)
93 Km W of Chieti (51815 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 0.5 2019-12-06
20:59:07		 42.7138 13.142 12 2019-12-06
21:06:51		 Sala Sismica INGV-Roma 74386741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-06 20:59:07 ± 0.08
Latitude 42.7138 ± 0.0027
Longitude 13.1420 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74386741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 288
Semi-minor axis of confidence ellipse (meter) 156
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 25
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35163
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 74386741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-06 21:06:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2019-12-06T20:59:20.47 0.3 undecidable manual S 105 39.0276 92 -0.18 69
IV.RM33.EHZ. 2019-12-06T20:59:16.50 0.3 undecidable manual S 165 23.4543 96 -0.01 73
IV.MC2.EHZ. 2019-12-06T20:59:16.58 0.3 undecidable manual S 10 22.2555 97 0.39 68
IV.SMA1.EHZ. 2019-12-06T20:59:15.21 0.3 undecidable manual S 120 18.2706 101 0.07 74
IV.TERO.HHZ. 2019-12-06T20:59:15.09 0.3 undecidable manual P 105 39.0276 92 -0.11 70
IV.MTRA.HNZ. 2019-12-06T20:59:15.64 0.3 undecidable manual S 77 21.2676 97 -0.29 69
IV.GAVE.EHZ. 2019-12-06T20:59:15.65 0.3 undecidable manual S 263 20.3685 98 -0.03 74
IV.T1299.HNZ. 2019-12-06T20:59:14.34 0.3 undecidable manual S 128 14.4744 110 0.19 73
IV.LNSS.HHZ. 2019-12-06T20:59:14.10 0.3 undecidable manual S 214 14.874 109 -0.15 73
IV.NRCA.HNZ. 2019-12-06T20:59:13.61 0.3 undecidable manual S 350 13.4754 114 -0.3 71
IV.MMO1.EHZ. 2019-12-06T20:59:13.19 3.0 positive manual P 0.03 0
IV.MTRA.HNZ. 2019-12-06T20:59:12.44 0.1 undecidable manual P 77 21.2676 97 -0.05 98
IV.GAVE.EHZ. 2019-12-06T20:59:12.32 0.3 undecidable manual P 263 20.3685 98 -0.02 74
IV.RM33.EHZ. 2019-12-06T20:59:12.92 0.3 undecidable manual P 165 23.4543 96 0.1 72
IV.SMA1.EHZ. 2019-12-06T20:59:12.23 0.3 undecidable manual P 120 18.2706 101 0.2 72
IV.MC2.EHZ. 2019-12-06T20:59:12.60 0.3 undecidable manual P 10 22.2555 97 -0.03 74
IV.LNSS.HHZ. 2019-12-06T20:59:11.55 0.1 undecidable manual P 214 14.874 109 0.03 99
IV.T1299.HNZ. 2019-12-06T20:59:11.60 0.1 undecidable manual P 128 14.4744 110 0.14 97
IV.NRCA.HNZ. 2019-12-06T20:59:11.31 0.1 undecidable manual P 350 13.4754 114 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:0.8 0.000061587395 0.1408 AML other m 2019-12-06T20:59:14.37
IV.LNSS.HHN. ML:0.9 0.000063694355 0.128 AML other m 2019-12-06T20:59:14.76
IV.GAVE.EHE. ML:0.6 0.000023539854999999998 0.1024 AML other m 2019-12-06T20:59:16.01
IV.GAVE.EHN. ML:0.5 0.000022451027499999998 0.1664 AML other m 2019-12-06T20:59:16.08
IV.RM33.EHE. ML:0.5 0.000021080441500000003 0.1408 AML other m 2019-12-06T20:59:17.10
IV.RM33.EHN. ML:0.4 0.0000148191355 0.0768 AML other m 2019-12-06T20:59:16.56
IV.TERO.HHE. ML:0.2 0.0000046135815 0.1536 AML other m 2019-12-06T20:59:21.22
IV.TERO.HHN. ML:0.2 0.00000573965855 0.064 AML other m 2019-12-06T20:59:21.20
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