Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 27-10-2016 and time 13:31:20 (Italy) in region 2 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 2.1 earthquake occured in region: 2 km SE Castelsantangelo sul Nera (MC), on

  • 27-10-2016 11:31:20 (UTC)
  • 27-10-2016 13:31:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8810, 13.1730 at 4 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
Castelsantangelo sul Nera MC 2 281 281
Ussita MC 8 444 725
Visso MC 9 1107 1832
Preci PG 11 724 2556
Norcia PG 12 4957 7513
Montemonaco AP 13 604 8117
Bolognola MC 13 142 8259
Montegallo AP 14 523 8782
Montefortino FM 15 1178 9960
Arquata del Tronto AP 16 1178 11138
Acquacanina MC 17 121 11259
Fiastra MC 17 559 11818
Amandola FM 19 3629 15447
Fiordimonte MC 19 202 15649
Monte Cavallo MC 19 145 15794

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
50 Km NW of Teramo (54892 inhabitants)
56 Km NE of Terni (111501 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
87 Km SW of Ancona (100861 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
97 Km W of Pescara (121014 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 2.1 2016-10-27
11:31:20		 42.8813 13.1733 5 2019-02-12
14:01:30		 Bollettino Sismico Italiano INGV 52970031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-27 11:31:20 ± 0.1
Latitude 42.8813 ± 0.0036
Longitude 13.1733 ± 0.0049
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 52970031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 379
Semi-minor axis of confidence ellipse (meter) 62
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 209
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.02698
Epicentral distance of station farthest from the epicenter (degree) 0.27339
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 52970031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-01-02 01:30:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T1243.HNZ. 2016-10-27T11:31:31.64 0.6 undecidable manual S 132 30.3474 98 0.13 47
IV.T1299.EHZ. 2016-10-27T11:31:31.74 0.6 undecidable manual S 162 28.8489 99 0.76 39
IV.T1204.EHZ. 2016-10-27T11:31:30.27 0.6 undecidable manual S 153 25.5522 100 0.39 45
IV.T1201.HNZ. 2016-10-27T11:31:30.81 0.6 undecidable manual S 166 25.6521 100 0.91 37
IV.GUMA.HHZ. 2016-10-27T11:31:30.17 0.6 undecidable manual S 33 24.0537 100 0.82 39
IV.T1217.HNZ. 2016-10-27T11:31:30.66 0.6 undecidable manual S 226 27.2505 99 0.22 46
IV.T1215.EHZ. 2016-10-27T11:31:30.24 0.6 undecidable manual S 251 26.3514 100 0.11 48
IV.CESI.HHZ. 2016-10-27T11:31:29.96 0.6 undecidable manual S 302 25.752 100 0.02 48
IV.T1241.EHZ. 2016-10-27T11:31:28.08 0.6 undecidable manual S 97 21.1677 102 -0.29 46
XO.AM05.HNZ. 2016-10-27T11:31:27.79 0.6 undecidable manual S 54 18.0708 104 0.47 45
IV.T1217.HNZ. 2016-10-27T11:31:26.16 0.3 undecidable manual P 226 27.2505 99 -0.23 69
IV.T1215.EHZ. 2016-10-27T11:31:26.12 0.1 undecidable manual P 251 26.3514 100 -0.09 95
IV.T1299.EHZ. 2016-10-27T11:31:26.50 0.1 undecidable manual P 162 28.8489 99 -0.21 93
IV.T1243.HNZ. 2016-10-27T11:31:26.47 0.1 undecidable manual P 132 30.3474 98 -0.54 85
IV.FEMA.HNZ. 2016-10-27T11:31:26.00 0.6 undecidable manual S 312 13.4754 108 0.21 48
IV.T1201.HNZ. 2016-10-27T11:31:26.12 0.1 undecidable manual P 166 25.6521 100 0.04 96
IV.GUMA.HHZ. 2016-10-27T11:31:26.02 0.3 undecidable manual P 33 24.0537 100 0.25 69
IV.CESI.HHZ. 2016-10-27T11:31:25.79 0.3 undecidable manual P 302 25.752 100 -0.32 68
IV.T1204.EHZ. 2016-10-27T11:31:25.85 0.3 undecidable manual P 153 25.5522 100 -0.22 70
IV.T1216.EHZ. 2016-10-27T11:31:25.88 0.6 undecidable manual S 275 12.5763 109 0.38 46
IV.FDMO.HHZ. 2016-10-27T11:31:24.62 1.0 positive manual P 338 18.5703 103 -0.08 24
IV.T1241.EHZ. 2016-10-27T11:31:24.63 0.3 undecidable manual P 97 21.1677 102 -0.57 65
IV.NRCA.HNZ. 2016-10-27T11:31:24.12 0.6 undecidable manual S 222 7.1928 122 0.33 47
XO.AM05.HNZ. 2016-10-27T11:31:24.87 0.1 undecidable manual P 54 18.0708 104 0.28 93
IV.FEMA.HNZ. 2016-10-27T11:31:23.53 0.3 undecidable manual P 312 13.4754 108 -0.18 72
IV.T1216.EHZ. 2016-10-27T11:31:23.46 0.1 undecidable manual P 275 12.5763 109 -0.08 98
IV.T1245.HNZ. 2016-10-27T11:31:22.61 0.3 undecidable manual S 157 2.997 146 -0.12 74
IV.MC2.EHZ. 2016-10-27T11:31:22.72 0.3 undecidable manual S 21 3.5964 141 -0.13 74
IV.NRCA.HNZ. 2016-10-27T11:31:22.53 0.1 undecidable manual P 222 7.1928 122 -0.02 100
IV.T1245.HNZ. 2016-10-27T11:31:21.76 0.1 undecidable manual P 157 2.997 146 -0.18 98
IV.MC2.EHZ. 2016-10-27T11:31:21.91 0.1 undecidable manual P 21 3.5964 141 -0.1 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1245.HHE. ML:0.0 0.03304198 0.32 AML other m 2016-10-27T11:31:24.20
IV.T1245.HHN. ML:0.0 0.04975781 0.256 AML other m 2016-10-27T11:31:24.18
IV.T1245.HNE. ML:0.0 0.02963165 0.16 AML other m 2016-10-27T11:31:23.32
IV.T1245.HNN. ML:0.0 0.053130989999999996 0.1664 AML other m 2016-10-27T11:31:23.57
IV.NRCA.HNE. ML:0.0 0.011828755 0.1536 AML other m 2016-10-27T11:31:24.37
IV.NRCA.HNN. ML:0.0 0.01533428 0.1728 AML other m 2016-10-27T11:31:24.54
IV.NRCA.HHN. ML:0.0 0.01624174 0.1856 AML other m 2016-10-27T11:31:24.54
IV.NRCA.HHE. ML:0.0 0.01282551 0.1408 AML other m 2016-10-27T11:31:24.36
IV.FDMO.HHE. ML:2.0 0.00096868175 0.3968 AML other m 2016-10-27T11:31:32.53
IV.FDMO.HHN. ML:2.1 0.0011381373500000001 0.4608 AML other m 2016-10-27T11:31:28.18
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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