Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 18-10-2016 and time 08:44:44 (Italy) in region 8 km E Norcia (PG)

A magnitude ML 0.7 earthquake occured in region: 8 km E Norcia (PG), on

  • 18-10-2016 06:44:44 (UTC)
  • 18-10-2016 08:44:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7660, 13.1800 at 9 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
Arquata del Tronto AP 10 1178 6135
Accumoli RI 10 667 6802
Cascia PG 15 3217 10019
Castelsantangelo sul Nera MC 15 281 10300
Montegallo AP 15 523 10823
Cittareale RI 16 482 11305
Preci PG 17 724 12029
Amatrice RI 18 2657 14686
Acquasanta Terme AP 19 2916 17602
Montemonaco AP 19 604 18206
Visso MC 20 1107 19313

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)
49 Km NW of L'Aquila (69753 inhabitants)
75 Km SE of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km NW of Chieti (51815 inhabitants)
94 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 0.7 2016-10-18
06:44:44		 42.7655 13.1803 9 2016-10-18
06:49:33		 Sala Sismica INGV-Roma 30324531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-18 06:44:44 ± 0.11
Latitude 42.7655 ± 0.0036
Longitude 13.1803 ± 0.0049
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 30324531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 388
Semi-minor axis of confidence ellipse (meter) 169
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 221
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.07015
Epicentral distance of station farthest from the epicenter (degree) 0.35703
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 2
Type of magnitude ML
Reference to an origin 30324531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-10-18 06:49:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SMA1.EHZ. 2016-10-18T06:44:52.05 0.1 undecidable manual S 140 19.5693 115 -0.09 97
IV.T1243.HHZ. 2016-10-18T06:44:52.91 0.1 undecidable manual S 109 23.1546 112 -0.36 91
IV.LNSS.HHZ. 2016-10-18T06:44:52.79 0.1 undecidable manual S 212 21.3675 113 0.09 96
IV.T1217.EHZ. 2016-10-18T06:44:52.57 0.1 undecidable manual S 254 21.1677 114 -0.06 97
IV.ARRO.EHZ. 2016-10-18T06:44:52.24 0.1 undecidable manual P 239 39.627 50 -0.15 92
IV.T1216.EHZ. 2016-10-18T06:44:51.99 0.1 undecidable manual S 317 19.0698 116 0 99
IV.T1204.EHZ. 2016-10-18T06:44:50.96 0.1 undecidable manual S 132 14.874 122 0.25 94
IV.T1245.HHZ. 2016-10-18T06:44:49.50 0.3 undecidable manual S 4 10.0788 132 0.12 73
IV.T1217.EHZ. 2016-10-18T06:44:49.24 0.1 undecidable manual P 254 21.1677 114 -0.01 98
IV.SMA1.EHZ. 2016-10-18T06:44:49.37 0.1 undecidable manual P 140 19.5693 115 0.4 91
IV.T1216.EHZ. 2016-10-18T06:44:49.05 0.1 undecidable manual P 317 19.0698 116 0.17 95
IV.T1243.HHZ. 2016-10-18T06:44:49.53 0.1 undecidable manual P 109 23.1546 112 -0.09 96
IV.LNSS.HHZ. 2016-10-18T06:44:49.18 0.1 undecidable manual P 212 21.3675 113 -0.11 96
IV.T1204.EHZ. 2016-10-18T06:44:48.30 0.1 undecidable manual P 132 14.874 122 0.16 96
IV.T1202.EHZ. 2016-10-18T06:44:48.68 0.1 undecidable manual S 152 7.7811 140 -0.14 98
IV.NRCA.HHZ. 2016-10-18T06:44:48.88 0.1 undecidable manual S 325 9.2796 135 -0.28 95
IV.T1202.EHZ. 2016-10-18T06:44:47.02 0.1 undecidable manual P 152 7.7811 140 -0.03 100
IV.NRCA.HHZ. 2016-10-18T06:44:47.28 0.1 undecidable manual P 325 9.2796 135 0.03 100
IV.T1245.HHZ. 2016-10-18T06:44:47.69 0.1 undecidable manual P 4 10.0788 132 0.32 94
IV.MMO1.EHZ. 2016-10-18T06:44:47.90 1.0 positive manual P 39 19.0698 116 -0.96 18
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.9 0.000108 0.98 AML other m 2016-10-18T06:44:48.96
IV.NRCA.HHE. ML:1.1 0.00016 0.52 AML other m 2016-10-18T06:44:49.51
IV.T1202.EHN. ML:0.5 0.000044300000000000006 1.58 AML other m 2016-10-18T06:44:38.29
IV.T1202.EHE. ML:0.6 0.000054999999999999995 1.58 AML other m 2016-10-18T06:45:37.24
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