Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 28-10-2016 and time 08:20:57 (UTC) in region 1 km SE Preci (PG)

A magnitude ML 1.0 earthquake occured in region: 1 km SE Preci (PG), on

  • 28-10-2016 08:20:57 (UTC)
  • 28-10-2016 10:20:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8740, 13.0490 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 1 724 724
Visso MC 7 1107 1831
Castelsantangelo sul Nera MC 9 281 2112
Norcia PG 10 4957 7069
Sellano PG 10 1079 8148
Ussita MC 11 444 8592
Cerreto di Spoleto PG 12 1075 9667
Monte Cavallo MC 14 145 9812
Cascia PG 17 3217 13029
Fiordimonte MC 19 202 13231
Vallo di Nera PG 19 364 13595
Pieve Torina MC 19 1458 15053
Bolognola MC 20 142 15195

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
59 Km W of Teramo (54892 inhabitants)
60 Km E of Perugia (166134 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
99 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
Bulletin
Rev1000 		ML 1.0 2016-10-28
08:20:57		 42.8738 13.0487 10 2019-07-19
13:23:31		 Bollettino Sismico Italiano INGV 51300521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-28 08:20:57 ± 0.12
Latitude 42.8738 ± 0.0045
Longitude 13.0487 ± 0.0086
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 51300521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 749
Semi-minor axis of confidence ellipse (meter) 205
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 279
Circular confidence region, given by single value of horizontal uncertainty (meter) 750.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.02788
Epicentral distance of station farthest from the epicenter (degree) 0.24641
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 51300521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-10-25 09:37:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHN. 2016-10-28T08:21:04.99 0.6 undecidable manual S 10 18.3705 119 0.27 47
IV.CSP1.EHZ. 2016-10-28T08:21:03.21 0.1 undecidable manual P 28 27.3504 50 -0.04 97
IV.FEMA.HNE. 2016-10-28T08:21:02.40 0.3 undecidable manual S 0 9.7791 135 0.07 75
IV.T1217.EHZ. 2016-10-28T08:21:01.99 0.1 undecidable manual P 208 20.3685 116 -0.03 98
IV.T1216.EHZ. 2016-10-28T08:21:01.00 0.1 undecidable manual S 308 3.0969 163 -0.1 100
IV.T1215.EHZ. 2016-10-28T08:21:01.43 0.1 positive manual P 242 16.6722 121 0.05 99
IV.FDMO.HHN. 2016-10-28T08:21:01.03 0.6 undecidable manual P 10 18.3705 119 -0.63 43
IV.NRCA.HHZ. 2016-10-28T08:21:01.53 0.1 undecidable manual S 130 6.993 145 -0.17 98
IV.MC2.EHZ. 2016-10-28T08:21:00.86 0.3 undecidable manual P 70 12.1767 129 0.23 72
IV.NRCA.HHZ. 2016-10-28T08:21:00.06 0.1 undecidable manual P 130 6.993 145 0.14 98
IV.T1216.EHZ. 2016-10-28T08:20:59.78 0.1 negative manual P 308 3.0969 163 0.21 98
IV.FEMA.HNE. 2016-10-28T08:20:59.99 0.6 undecidable manual P 0 9.7791 135 -0.29 47
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1216.EHN. ML:1.0 0.00019783115 0.096 AML other m 2016-10-28T08:21:01.71
IV.T1216.EHE. ML:1.3 0.00033414725 0.096 AML other m 2016-10-28T08:21:01.39
IV.T1217.EHE. ML:0.7 0.00004237729999999999 0.16 AML other m 2016-10-28T08:21:05.21
IV.T1217.EHN. ML:0.9 0.000054532049999999996 0.16 AML other m 2016-10-28T08:21:05.67
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
Waveforms Seismic signals in miniseed + resp format Download