Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 31-10-2016 and time 20:16:44 (Italy) in region 2 km S Cerreto di Spoleto (PG)

A magnitude ML 2.2 earthquake occured in region: 2 km S Cerreto di Spoleto (PG), on

  • 31-10-2016 19:16:44 (UTC)
  • 31-10-2016 20:16:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8000, 12.9110 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
Cerreto di Spoleto PG 2 1075 1075
Vallo di Nera PG 5 364 1439
Sant'Anatolia di Narco PG 10 564 2003
Poggiodomo PG 10 117 2120
Sellano PG 10 1079 3199
Campello sul Clitunno PG 11 2442 5641
Scheggino PG 12 461 6102
Cascia PG 12 3217 9319
Preci PG 14 724 10043
Norcia PG 15 4957 15000
Spoleto PG 16 38218 53218
Trevi PG 16 8469 61687
Monteleone di Spoleto PG 17 599 62286
Castel Ritaldi PG 20 3278 65564

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km SE of Foligno (57155 inhabitants)
34 Km NE of Terni (111501 inhabitants)
55 Km SE of Perugia (166134 inhabitants)
64 Km NW of L'Aquila (69753 inhabitants)
67 Km W of Teramo (54892 inhabitants)
78 Km NE of Viterbo (67173 inhabitants)
90 Km N of Guidonia Montecelio (88673 inhabitants)
93 Km N of Tivoli (56533 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 2.2 2016-10-31
19:16:44		 42.7997 12.9107 10 2019-02-12
14:03:20		 Bollettino Sismico Italiano INGV 46105551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-31 19:16:44 ± 0.05
Latitude 42.7997 ± 0.0018
Longitude 12.9107 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 46105551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 363
Semi-minor axis of confidence ellipse (meter) 149
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 95
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 48
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.89842
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 24
Magnitude information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 46105551
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-07-01 03:47:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TOLF.HHZ. 2016-10-31T19:17:19.99 3.0 undecidable manual S 0.03 0
IV.FSSB.HHZ. 2016-10-31T19:17:14.57 0.3 undecidable manual S 354 99.7224 50 0.5 57
IV.ATVO.HHZ. 2016-10-31T19:17:07.45 0.3 undecidable manual S 328 76.4679 50 -0.41 60
IV.ARVD.HHZ. 2016-10-31T19:17:07.98 0.3 undecidable manual S 2 77.5668 50 -0.18 63
IV.EL6.EHZ. 2016-10-31T19:17:04.39 0.6 undecidable manual S 15 60.7947 50 0.71 37
IV.FIAM.HHZ. 2016-10-31T19:17:03.96 0.6 undecidable manual S 164 61.2942 50 0.13 44
IV.FOSV.EHZ. 2016-10-31T19:17:02.94 0.1 undecidable manual S 348 56.2992 50 0.46 83
IV.T1247.HHZ. 2016-10-31T19:17:01.32 0.1 undecidable manual S 141 50.8158 50 0.31 86
IV.SNTG.HHZ. 2016-10-31T19:17:01.45 0.6 undecidable manual S 3 50.616 50 0.49 42
IV.FSSB.HHZ. 2016-10-31T19:17:01.95 0.1 undecidable manual P 354 99.7224 50 0.26 79
IV.GUMA.HHZ. 2016-10-31T19:16:59.91 0.6 undecidable manual S 50 45.2214 50 0.39 43
IV.FIU1.HNZ. 2016-10-31T19:16:59.39 0.1 undecidable manual S 2 43.2234 50 0.4 86
IV.ARVD.HHZ. 2016-10-31T19:16:58.09 0.1 undecidable manual P 2 77.5668 50 -0.18 84
IV.RM33.EHZ. 2016-10-31T19:16:58.15 0.1 undecidable manual S 142 40.626 50 -0.17 91
IV.ATVO.HHZ. 2016-10-31T19:16:58.28 0.6 undecidable manual P 328 76.4679 50 0.17 42
IV.SEF1.HNN. 2016-10-31T19:16:57.99 0.6 undecidable manual S 4 38.628 50 0.22 45
IV.T1256.HHZ. 2016-10-31T19:16:56.43 0.1 undecidable manual S 48 34.4433 50 -0.21 91
IV.ASSB.HHZ. 2016-10-31T19:16:56.22 0.1 undecidable manual S 323 33.8439 50 -0.28 90
IV.CESX.HHZ. 2016-10-31T19:16:56.46 0.1 undecidable manual S 231 33.8439 50 -0.04 94
IV.FDMO.HHZ. 2016-10-31T19:16:55.05 0.6 undecidable manual S 29 29.9478 50 -0.41 44
IV.T1211.EHZ. 2016-10-31T19:16:55.65 0.1 undecidable manual S 189 29.9478 50 0.2 92
IV.FIAM.HHZ. 2016-10-31T19:16:55.43 1.0 positive manual P 164 61.2942 50 -0.35 21
IV.EL6.EHZ. 2016-10-31T19:16:55.41 0.1 undecidable manual P 15 60.7947 50 -0.29 85
IV.ARRO.EHZ. 2016-10-31T19:16:54.59 0.6 undecidable manual S 206 27.1506 50 -0.11 47
IV.FOSV.EHZ. 2016-10-31T19:16:54.88 0.1 undecidable manual P 348 56.2992 50 -0.12 89
IV.T1247.HHZ. 2016-10-31T19:16:54.46 0.1 undecidable manual P 141 50.8158 50 0.31 86
IV.SNTG.HHZ. 2016-10-31T19:16:53.96 0.1 undecidable manual P 3 50.616 50 -0.16 89
IV.T1245.HNZ. 2016-10-31T19:16:53.28 0.1 undecidable manual S 74 23.4543 113 -0.35 90
IV.LNSS.HHZ. 2016-10-31T19:16:53.52 0.1 undecidable manual S 154 24.2535 113 -0.37 89
IV.GUMA.HHZ. 2016-10-31T19:16:53.42 0.1 undecidable manual P 50 45.2214 50 0.13 91
IV.FIU1.HNZ. 2016-10-31T19:16:52.76 0.1 undecidable manual P 2 43.2234 50 -0.22 89
IV.FEMA.HNZ. 2016-10-31T19:16:52.81 0.1 undecidable manual S 32 21.2676 115 -0.14 94
IV.RM33.EHZ. 2016-10-31T19:16:52.45 0.1 undecidable manual P 142 40.626 50 -0.14 91
IV.SEF1.HNN. 2016-10-31T19:16:52.14 0.1 undecidable manual P 4 38.628 50 -0.14 91
IV.CESX.HHZ. 2016-10-31T19:16:51.38 0.1 undecidable manual P 231 33.8439 50 -0.16 92
IV.T1256.HHZ. 2016-10-31T19:16:51.42 0.1 undecidable manual P 48 34.4433 50 -0.21 91
IV.ASSB.HHZ. 2016-10-31T19:16:51.30 0.1 undecidable manual P 323 33.8439 50 -0.25 90
IV.T1216.EHZ. 2016-10-31T19:16:50.52 0.6 undecidable manual S 41 13.3755 127 -0.08 48
IV.T1245.HNZ. 2016-10-31T19:16:50.44 0.1 undecidable manual P 74 23.4543 113 0.55 86
IV.ARRO.EHZ. 2016-10-31T19:16:50.46 0.1 undecidable manual P 206 27.1506 50 -0.05 95
IV.FDMO.HHZ. 2016-10-31T19:16:50.69 0.1 undecidable manual P 29 29.9478 50 -0.26 91
IV.T1211.EHZ. 2016-10-31T19:16:50.84 0.1 undecidable manual P 189 29.9478 50 -0.1 94
IV.LNSS.HHZ. 2016-10-31T19:16:49.99 0.1 negative manual P 154 24.2535 113 -0.05 96
IV.T1217.EHZ. 2016-10-31T19:16:49.89 0.1 undecidable manual S 170 9.879 136 0.21 95
IV.FEMA.HNZ. 2016-10-31T19:16:49.46 0.1 undecidable manual P 32 21.2676 115 -0.04 96
IV.T1216.EHZ. 2016-10-31T19:16:48.24 0.1 undecidable manual P 41 13.3755 127 0.1 96
IV.T1215.EHZ. 2016-10-31T19:16:48.48 0.1 undecidable manual S 274 3.3966 161 0 100
IV.T1215.EHZ. 2016-10-31T19:16:47.12 0.1 undecidable manual P 274 3.3966 161 0.2 96
IV.T1217.EHZ. 2016-10-31T19:16:47.89 0.1 undecidable manual P 170 9.879 136 0.28 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHN. ML:2.0 0.00047250000000000005 0.54 AML other m 2016-10-31T19:16:55.28
IV.ARRO.EHE. ML:1.9 0.00046399999999999995 1.8 AML other m 2016-10-31T19:16:57.02
IV.ARVD.HHN. ML:1.7 0.00007020164500000001 0.1408 AML other m 2016-10-31T19:17:10.71
IV.ARVD.HHE. ML:1.9 0.00010676035 0.2048 AML other m 2016-10-31T19:17:10.05
IV.ASSB.HHN. ML:2.3 0.0008209999999999999 0.2 AML other m 2016-10-31T19:16:58.39
IV.ASSB.HHE. ML:2.4 0.0010194999999999998 0.64 AML other m 2016-10-31T19:16:58.38
IV.ATVO.HHN. ML:1.8 0.0000847 0.44 AML other m 2016-10-31T19:17:13.77
IV.ATVO.HHE. ML:1.8 0.0001003 1.38 AML other m 2016-10-31T19:17:11.21
IV.CESX.HHN. ML:2.1 0.000597 0.58 AML other m 2016-10-31T19:16:57.44
IV.CESX.HHE. ML:2.0 0.00041200000000000004 0.54 AML other m 2016-10-31T19:16:58.61
IV.FIAM.HHE. ML:1.7 0.000107 0.42 AML other m 2016-10-31T19:17:07.49
IV.FIAM.HHN. ML:1.7 0.00010375000000000001 0.76 AML other m 2016-10-31T19:17:07.43
IV.FOSV.EHE. ML:1.7 0.00010821759 1.0496 AML other m 2016-10-31T19:17:03.87
IV.FOSV.EHN. ML:1.6 0.00009929899 1.408 AML other m 2016-10-31T19:17:04.99
IV.GUMA.HNN. ML:2.4 0.0007174729 2.5216 AML other m 2016-10-31T19:17:01.98
IV.GUMA.HHE. ML:2.3 0.00068541195 0.4352 AML other m 2016-10-31T19:17:03.23
IV.GUMA.HHN. ML:2.3 0.00060108545 1.4848 AML other m 2016-10-31T19:17:02.96
IV.GUMA.HNE. ML:2.4 0.0007508386 4.6592 AML other m 2016-10-31T19:17:01.43
IV.LNSS.HHE. ML:2.1 0.0008169999999999999 0.94 AML other m 2016-10-31T19:16:53.96
IV.LNSS.HHN. ML:2.6 0.00242 0.28 AML other m 2016-10-31T19:16:54.29
IV.RM33.EHN. ML:2.2 0.000597 0.22 AML other m 2016-10-31T19:16:58.72
IV.RM33.EHE. ML:2.2 0.000568 0.48 AML other m 2016-10-31T19:16:59.45
IV.RM33.HNE. ML:2.2 0.0005666579 1.5104 AML other m 2016-10-31T19:16:58.69
IV.RM33.HNN. ML:2.2 0.0005989271 0.2176 AML other m 2016-10-31T19:16:58.61
IV.SNTG.HHE. ML:1.9 0.00019892825 0.5888 AML other m 2016-10-31T19:17:02.87
IV.SNTG.HHN. ML:1.9 0.00019085515 0.0896 AML other m 2016-10-31T19:17:02.64
IV.SNTG.HNE. ML:1.9 0.0001985295 1.1904 AML other m 2016-10-31T19:17:02.58
IV.T1211.HNN. ML:2.3 0.000971 0.2 AML other m 2016-10-31T19:16:57.42
IV.T1211.HNE. ML:2.1 0.0006325 0.08 AML other m 2016-10-31T19:16:55.83
IV.T1215.HNE. ML:2.5 0.005804999999999999 0.06 AML other m 2016-10-31T19:16:48.66
IV.T1215.EHN. ML:2.7 0.008395 0.06 AML other m 2016-10-31T19:16:48.55
IV.T1215.EHE. ML:2.5 0.00597 0.06 AML other m 2016-10-31T19:16:48.66
IV.T1217.HNE. ML:2.6 0.005725 0.44 AML other m 2016-10-31T19:16:50.32
IV.T1217.HNN. ML:2.7 0.00726 1.5 AML other m 2016-10-31T19:16:49.94
IV.T1217.EHN. ML:2.7 0.0071449999999999994 1.5 AML other m 2016-10-31T19:16:49.94
IV.T1217.EHE. ML:2.6 0.005425 0.26 AML other m 2016-10-31T19:16:50.32
IV.T1256.HNE. ML:2.0 0.0004441122 4.7232 AML other m 2016-10-31T19:16:56.90
IV.T1256.HHE. ML:1.9 0.00035889369999999996 4.7232 AML other m 2016-10-31T19:16:59.26
IV.T1256.HNN. ML:2.0 0.00039633675 1.024 AML other m 2016-10-31T19:16:56.97
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