Earthquake with magnitude of ML 1.6 on date 09-12-2019 and time 19:03:25 (Italy) in region 7 km E Norcia (PG)

A magnitude ML 1.6 earthquake occured in region: 7 km E Norcia (PG), on

  • 09-12-2019 18:03:25 (UTC)
  • 09-12-2019 19:03:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.77, 13.17 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.

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 7 4957 4957
Arquata del Tronto AP 10 1178 6135
Accumoli RI 10 667 6802
Cascia PG 14 3217 10019
Castelsantangelo sul Nera MC 14 281 10300
Montegallo AP 16 523 10823
Preci PG 16 724 11547
Cittareale RI 17 482 12029
Amatrice RI 18 2657 14686
Montemonaco AP 19 604 15290
Visso MC 19 1107 16397
Acquasanta Terme AP 19 2916 19313
Ussita MC 20 444 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
49 Km E of Terni (111501 inhabitants)
50 Km NW of L'Aquila (69753 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km W of Pescara (121014 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
99 Km S of Ancona (100861 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.6 2019-12-09
18:03:25
42.77 13.17 10 2019-12-09
18:09:07
Sala Sismica INGV-Roma 74493571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-09 18:03:25 ± 0.03
Latitude 42.77 ± 0.00
Longitude 13.17 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74493571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 277
Semi-minor axis of confidence ellipse (meter) 56
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.30667
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 74493571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-09 18:09:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.RMVT.HGZ. 2019-12-09T18:03:58.79 3.0 undecidable manual S 0.1 0
IV.RNI2.HHZ. 2019-12-09T18:03:48.53 3.0 undecidable manual P -0.29 0
IV.CESI.HHZ. 2019-12-09T18:03:37.13 0.3 undecidable manual S 320 0.3067 50 -0.06 72
IV.CSP1.EHZ. 2019-12-09T18:03:37.84 0.3 undecidable manual S 100
IV.FDMO.HHZ. 2019-12-09T18:03:36.17 0.3 undecidable manual S 347 0.2752 50 -0.06 73
IV.RM33.EHZ. 2019-12-09T18:03:35.84 0.3 undecidable manual S 173 0.2617 50 0 74
IV.LNSS.HHZ. 2019-12-09T18:03:33.68 0.3 undecidable manual S 210 0.1925 116 -0.02 75
IV.SMA1.EHZ. 2019-12-09T18:03:33.28 0.1 undecidable manual S 139 0.1826 117 -0.08 98
IV.MF5.EHZ. 2019-12-09T18:03:32.70 3.0 undecidable manual P 0.38 0
IV.MTRA.EHZ. 2019-12-09T18:03:32.43 0.3 undecidable manual S 100
IV.MMO1.EHZ. 2019-12-09T18:03:32.88 0.3 undecidable manual S 41 0.1727 118 -0.14 73
IV.MC2.EHZ. 2019-12-09T18:03:32.17 0.3 undecidable manual S 5 0.143 123 0.13 74
IV.CESI.HHZ. 2019-12-09T18:03:32.22 0.3 undecidable manual P 320 0.3067 50 -0.02 73
IV.RM33.EHZ. 2019-12-09T18:03:31.50 0.3 undecidable manual P 173 0.2617 50 0.04 73
IV.FDMO.HHZ. 2019-12-09T18:03:31.68 0.3 undecidable manual P 347 0.2752 50 0 74
IV.SMA1.EHZ. 2019-12-09T18:03:30.06 0.1 undecidable manual P 139 0.1826 117 0.03 99
IV.LNSS.HHZ. 2019-12-09T18:03:30.24 0.1 undecidable manual P 210 0.1925 116 0.02 99
IV.MC2.EHZ. 2019-12-09T18:03:29.46 0.1 undecidable manual P 5 0.143 123 0.2 97
IV.NRCA.HNZ. 2019-12-09T18:03:29.93 0.1 undecidable manual S 326 0.0773 140 -0.21 98
IV.MMO1.EHZ. 2019-12-09T18:03:29.82 0.1 undecidable manual P 41 0.1727 118 -0.01 100
IV.NRCA.HNZ. 2019-12-09T18:03:28.33 0.1 undecidable manual P 326 0.0773 140 0.16 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:1.6 0.000639 1.84 AML other m 2019-12-09T18:03:29.99
IV.NRCA.HHN. ML:1.6 0.000643 0.14 AML other m 2019-12-09T18:03:30.07
IV.NRCA.HHE. ML:2 0.00121 0.08 AML other m 2019-12-09T18:03:30.12
IV.NRCA.HNE. ML:1.9 0.001099 0.08 AML other m 2019-12-09T18:03:30.12
IV.LNSS.HHN. ML:1.3 0.0001435 1.26 AML other m 2019-12-09T18:03:33.93
IV.LNSS.HHE. ML:1.4 0.000193 0.96 AML other m 2019-12-09T18:03:33.93
IV.MTRA.EHE. ML:1.6 0.000299 1.34 AML other m 2019-12-09T18:03:42.71
IV.MTRA.EHN. ML:1.6 0.00029 0.98 AML other m 2019-12-09T18:03:43.71
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download