Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 06-12-2019 and time 23:34:30 (Italy) in region 8 km E Norcia (PG)

A magnitude ML 0.8 earthquake occured in region: 8 km E Norcia (PG), on

  • 06-12-2019 22:34:30 (UTC)
  • 06-12-2019 23:34:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8100, 13.1860 at 10 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
Norcia PG 8 4957 4957
Castelsantangelo sul Nera MC 10 281 5238
Arquata del Tronto AP 10 1178 6416
Montegallo AP 13 523 6939
Accumoli RI 14 667 7606
Preci PG 14 724 8330
Montemonaco AP 15 604 8934
Ussita MC 16 444 9378
Visso MC 16 1107 10485
Cascia PG 17 3217 13702
Acquasanta Terme AP 19 2916 16618
Montefortino FM 20 1178 17796

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
52 Km NE of Terni (111501 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
73 Km E of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km W of Pescara (121014 inhabitants)
94 Km S of Ancona (100861 inhabitants)
95 Km NW of Chieti (51815 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km E of Viterbo (67173 inhabitants)
99 Km NE of Tivoli (56533 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 0.8 2019-12-06
22:34:30		 42.8098 13.186 10 2019-12-06
22:41:05		 Sala Sismica INGV-Roma 74387991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-06 22:34:30 ± 0.36
Latitude 42.8098 ± 0.0162
Longitude 13.1860 ± 0.0135
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74387991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1873
Semi-minor axis of confidence ellipse (meter) 909
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 159
Circular confidence region, given by single value of horizontal uncertainty (meter) 1870.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 245
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.05756
Epicentral distance of station farthest from the epicenter (degree) 0.23742
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.4
Num. used stations 11
Type of magnitude ML
Reference to an origin 74387991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-06 22:41:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2019-12-06T22:34:39.66 0.3 undecidable manual S 342 26.3514 50 -0.18 72
IV.FDMO.HHZ. 2019-12-06T22:34:36.07 1.0 undecidable manual P 342 26.3514 50 0.32 23
IV.MMO1.EHZ. 2019-12-06T22:34:36.30 0.3 undecidable manual S 49 15.1737 124 -0.22 73
IV.MC2.EHZ. 2019-12-06T22:34:35.68 0.3 undecidable manual S 1 11.2776 132 0.22 73
IV.NRCA.HHZ. 2019-12-06T22:34:34.04 0.3 undecidable manual S 294 6.3936 148 -0.33 72
IV.MC2.EHZ. 2019-12-06T22:34:33.52 0.6 positive manual P 1 11.2776 132 0.3 48
IV.MMO1.EHZ. 2019-12-06T22:34:33.84 1.0 undecidable manual P 49 15.1737 124 0.01 25
IV.NRCA.HHZ. 2019-12-06T22:34:32.73 0.1 positive manual P 294 6.3936 148 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:0.4 0.0000143632045 0.2176 AML other m 2019-12-06T22:34:41.03
IV.GAVE.HNE. ML:1.4 0.000140364175 0.6528 AML other m 2019-12-06T22:34:41.37
IV.GAVE.HNN. ML:1.6 0.0002107427 0.9472 AML other m 2019-12-06T22:34:33.61
IV.TERO.HHE. ML:0.5 0.00000908805085 0.448 AML other m 2019-12-06T22:34:45.43
IV.TERO.HHN. ML:0.8 0.0000193094285 1.088 AML other m 2019-12-06T22:34:37.59
IV.NRCA.HNE. ML:1.3 0.000284909692 0.2432 AML other m 2019-12-06T22:34:35.33
IV.NRCA.HNN. ML:1.2 0.00023869260999999996 0.6016 AML other m 2019-12-06T22:34:35.85
IV.NRCA.HHE. ML:0.7 0.000080794085 0.0768 AML other m 2019-12-06T22:34:34.21
IV.NRCA.HHN. ML:0.8 0.00010177154999999998 0.0768 AML other m 2019-12-06T22:34:34.19
IV.FDMO.HHE. ML:0.3 0.00000882077642 0.7424 AML other m 2019-12-06T22:34:42.44
IV.FDMO.HHN. ML:0.0 0.000006575248 0.1664 AML other m 2019-12-06T22:34:40.45
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