Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 30-10-2016 and time 11:36:31 (UTC) in region 4 km NW Greccio (RI)

A magnitude ML 2.4 earthquake occured in region: 4 km NW Greccio (RI), on

  • 30-10-2016 11:36:31 (UTC)
  • 30-10-2016 12:36:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4780, 12.7390 at 2 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
Greccio RI 4 1558 1558
Colli sul Velino RI 4 533 2091
Stroncone TR 7 4917 7008
Labro RI 7 374 7382
Contigliano RI 8 3783 11165
Cottanello RI 9 563 11728
Morro Reatino RI 9 373 12101
Configni RI 10 633 12734
Rivodutri RI 11 1253 13987
Montasola RI 11 395 14382
Terni TR 12 111501 125883
Arrone TR 12 2763 128646
Poggio Bustone RI 12 2055 130701
Rieti RI 13 47698 178399
Vacone RI 13 256 178655
Montefranco TR 14 1276 179931
Cantalice RI 14 2755 182686
Polino TR 15 233 182919
Torri in Sabina RI 16 1256 184175
Calvi dell'Umbria TR 16 1856 186031
Casperia RI 16 1246 187277
Ferentillo TR 17 1913 189190
Monte San Giovanni in Sabina RI 17 714 189904
Montebuono RI 17 883 190787
Roccantica RI 18 563 191350
Tarano RI 18 1444 192794
Narni TR 19 19785 212579
Cittaducale RI 20 6828 219407
Selci RI 20 1106 220513

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km SE of Terni (111501 inhabitants)
52 Km E of Viterbo (67173 inhabitants)
53 Km N of Guidonia Montecelio (88673 inhabitants)
53 Km S of Foligno (57155 inhabitants)
56 Km W of L'Aquila (69753 inhabitants)
57 Km N of Tivoli (56533 inhabitants)
68 Km NE of Roma (2864731 inhabitants)
76 Km SE of Perugia (166134 inhabitants)
82 Km W of Teramo (54892 inhabitants)
88 Km N of Velletri (53303 inhabitants)
89 Km NE of Fiumicino (78395 inhabitants)
89 Km E of Civitavecchia (52991 inhabitants)
92 Km N of Pomezia (62966 inhabitants)
98 Km N of Aprilia (73446 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 2.4 2016-10-30
11:36:31		 42.4778 12.7393 2 2019-02-12
14:03:12		 Bollettino Sismico Italiano INGV 43474561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-30 11:36:31 ± 0.08
Latitude 42.4778 ± 0.0036
Longitude 12.7393 ± 0.0061
Depth (km) 2 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 43474561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 500
Semi-minor axis of confidence ellipse (meter) 360
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 291
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.10162
Epicentral distance of station farthest from the epicenter (degree) 1.04771
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:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 43474561
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-04-06 15:31:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.POFI.HNE. 2016-10-30T11:36:52.28 1.0 undecidable manual P 136 116.2947 50 0.37 19
IV.VVLD.HHZ. 2016-10-30T11:36:50.20 1.0 undecidable manual P 133 99.123 50 0.93 16
IV.MTCE.HHZ. 2016-10-30T11:36:49.43 0.6 undecidable manual S 180 50.5161 92 0.5 42
IV.TOLF.HHN. 2016-10-30T11:36:46.39 0.1 undecidable manual P 233 76.0683 50 0.68 75
IV.RDP.HHZ. 2016-10-30T11:36:46.00 1.0 undecidable manual P 182 79.6647 50 -0.25 21
IV.RCAV.EHZ. 2016-10-30T11:36:45.65 1.0 undecidable manual P 166 71.9724 50 0.57 20
IV.T1215.EHZ. 2016-10-30T11:36:44.80 0.6 undecidable manual S 16 37.4292 93 0.38 44
IV.RM33.HNE. 2016-10-30T11:36:44.67 0.6 undecidable manual S 85 39.0276 93 -0.29 45
IV.FIAM.HHN. 2016-10-30T11:36:44.78 0.6 undecidable manual S 127 38.7279 93 -0.08 47
IV.CERT.HHE. 2016-10-30T11:36:43.01 1.0 undecidable manual P 161 61.9935 50 -0.52 21
IV.SRES.HHN. 2016-10-30T11:36:42.24 0.6 undecidable manual S 215 32.6451 93 -0.52 43
IV.T1217.EHZ. 2016-10-30T11:36:41.77 0.6 undecidable manual S 31 30.3474 94 -0.18 47
IV.LNSS.HHZ. 2016-10-30T11:36:41.04 0.3 undecidable manual S 60 28.2495 94 -0.19 70
IV.MTCE.HHZ. 2016-10-30T11:36:40.86 0.3 undecidable manual P 180 50.5161 92 -0.66 59
IV.RM33.HNE. 2016-10-30T11:36:39.22 0.3 undecidable manual P 85 39.0276 93 -0.01 72
IV.FIAM.HHN. 2016-10-30T11:36:39.44 1.0 undecidable manual P 127 38.7279 93 0.27 23
IV.T1215.EHZ. 2016-10-30T11:36:38.91 0.6 undecidable manual P 16 37.4292 93 -0.01 48
IV.SRES.HHN. 2016-10-30T11:36:37.97 0.6 undecidable manual P 215 32.6451 93 0.01 48
IV.T1217.EHZ. 2016-10-30T11:36:37.33 0.6 undecidable manual P 31 30.3474 94 -0.17 47
IV.CESX.HHE. 2016-10-30T11:36:37.96 0.6 undecidable manual S 319 19.1697 96 -0.11 48
IV.LNSS.HHZ. 2016-10-30T11:36:37.36 0.6 undecidable manual P 60 28.2495 94 0.28 46
IV.ARRO.EHZ. 2016-10-30T11:36:35.60 0.3 undecidable manual S 11 11.4774 100 0.17 73
IV.T1211.EHZ. 2016-10-30T11:36:35.62 0.6 undecidable manual S 57 11.2776 100 0.25 48
IV.CESX.HHE. 2016-10-30T11:36:34.87 0.6 undecidable manual P 319 19.1697 96 -0.38 46
IV.T1211.EHZ. 2016-10-30T11:36:33.67 0.1 undecidable manual P 57 11.2776 100 -0.02 100
IV.ARRO.EHZ. 2016-10-30T11:36:33.59 0.1 undecidable manual P 11 11.4774 100 -0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
XO.AM05.EHN. ML:2.9 0.001155 0.08 AML other m 2016-10-30T11:36:21.32
IV.CERT.HHN. ML:0.0 0.0004125059 0.704 AML other m 2016-10-30T11:36:56.97
IV.CERT.HHE. ML:2.5 0.0007095221 0.48 AML other m 2016-10-30T11:36:56.83
IV.T1215.HNN. ML:2.2 0.00062541135 0.448 AML other m 2016-10-30T11:36:50.18
IV.T1215.EHN. ML:2.3 0.000712396455 0.5632 AML other m 2016-10-30T11:36:50.46
IV.T1215.EHE. ML:2.3 0.0008771557499999999 0.0832 AML other m 2016-10-30T11:36:39.22
IV.T1215.HNE. ML:2.3 0.0008419663500000001 0.0832 AML other m 2016-10-30T11:36:39.26
IV.T1217.HNN. ML:2.6 0.0022739880000000002 0.3392 AML other m 2016-10-30T11:36:43.15
IV.T1217.HNE. ML:2.6 0.002086965 0.4608 AML other m 2016-10-30T11:36:47.59
IV.T1217.EHN. ML:2.6 0.002295802 0.3392 AML other m 2016-10-30T11:36:43.15
IV.T1217.EHE. ML:2.6 0.0021013710000000003 0.448 AML other m 2016-10-30T11:36:47.59
IV.TOLF.HHE. ML:0.0 0.000314 0.68 AML other m 2016-10-30T11:36:59.68
IV.TOLF.HHN. ML:2.2 0.00024470884999999997 0.5184 AML other m 2016-10-30T11:36:59.58
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