Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 28-10-2016 and time 07:39:10 (UTC) in region 2 km E Preci (PG)

A magnitude ML 1.7 earthquake occured in region: 2 km E Preci (PG), on

  • 28-10-2016 07:39:10 (UTC)
  • 28-10-2016 09:39:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8770, 13.0610 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
Preci PG 2 724 724
Visso MC 7 1107 1831
Castelsantangelo sul Nera MC 8 281 2112
Norcia PG 10 4957 7069
Ussita MC 10 444 7513
Sellano PG 11 1079 8592
Cerreto di Spoleto PG 13 1075 9667
Monte Cavallo MC 14 145 9812
Cascia PG 18 3217 13029
Fiordimonte MC 18 202 13231
Pieve Torina MC 19 1458 14689
Bolognola MC 19 142 14831
Fiastra MC 19 559 15390
Acquacanina MC 20 121 15511
Vallo di Nera PG 20 364 15875

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
58 Km W of Teramo (54892 inhabitants)
60 Km E of Perugia (166134 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
98 Km W of Montesilvano (53738 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 1.7 2016-10-28
07:39:10		 42.8767 13.0608 10 2016-10-28
07:54:44		 Sala Sismica INGV-Roma 30791801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-28 07:39:10 ± 0.15
Latitude 42.8767 ± 0.0081
Longitude 13.0608 ± 0.0049
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 30791801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 951
Semi-minor axis of confidence ellipse (meter) 360
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 348
Circular confidence region, given by single value of horizontal uncertainty (meter) 950.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 240
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.47214
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations 3
Type of magnitude ML
Reference to an origin 30791801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-10-28 07:54:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MCIV.HHZ. 2016-10-28T07:39:31.52 3.0 positive manual P 2.2 0
IV.TERO.HHZ. 2016-10-28T07:39:27.26 0.3 undecidable manual S 122 52.4031 50 -0.09 68
IV.LNSS.HHZ. 2016-10-28T07:39:21.60 0.3 undecidable manual S 183 30.4473 50 0.12 70
IV.TERO.HHZ. 2016-10-28T07:39:20.05 0.1 undecidable manual P 122 52.4031 50 -0.23 88
IV.T1217.EHZ. 2016-10-28T07:39:18.61 0.1 undecidable manual S 210 21.0678 115 -0.08 96
IV.LNSS.HHZ. 2016-10-28T07:39:17.22 0.6 undecidable manual P 183 30.4473 50 0.34 45
IV.T1215.EHZ. 2016-10-28T07:39:17.52 0.1 undecidable manual S 242 17.6712 119 -0.12 96
IV.T1217.EHZ. 2016-10-28T07:39:15.28 0.1 undecidable manual P 210 21.0678 115 0 98
IV.T1215.EHZ. 2016-10-28T07:39:14.74 0.1 undecidable manual P 242 17.6712 119 0.07 97
IV.NRCA.HNZ. 2016-10-28T07:39:14.67 0.1 undecidable manual S 138 6.4935 147 -0.02 100
IV.NRCA.HNZ. 2016-10-28T07:39:13.15 0.1 undecidable manual P 138 6.4935 147 0.18 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.5 0.0001545 1.58 AML other m 2016-10-28T07:39:22.39
IV.LNSS.HHN. ML:1.5 0.00015372815 0.5184 AML other m 2016-10-28T07:39:22.32
IV.NRCA.HNE. ML:2.2 0.0025099999999999996 0.16 AML other m 2016-10-28T07:39:14.87
IV.NRCA.HHE. ML:2.2 0.0027949999999999997 0.16 AML other m 2016-10-28T07:39:14.87
IV.NRCA.HNN. ML:2.3 0.003035 0.1 AML other m 2016-10-28T07:39:14.74
IV.NRCA.HHN. ML:2.3 0.003335 0.1 AML other m 2016-10-28T07:39:14.74
IV.T1215.HNE. ML:1.4 0.00021768495000000002 0.512 AML other m 2016-10-28T07:39:17.60
IV.T1215.EHE. ML:1.5 0.00024188090000000002 0.512 AML other m 2016-10-28T07:39:17.86
IV.T1215.EHN. ML:1.5 0.00023950895 0.832 AML other m 2016-10-28T07:39:17.80
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