Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 20-02-2014 and time 23:36:09 (Italy) in region 5 km SE Cerreto di Spoleto (PG)

A magnitude ML 1.6 earthquake occured in region: 5 km SE Cerreto di Spoleto (PG), on

  • 20-02-2014 22:36:09 (UTC)
  • 20-02-2014 23:36:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7860, 12.9620 at 8 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 5 1075 1075
Vallo di Nera PG 8 364 1439
Poggiodomo PG 8 117 1556
Cascia PG 9 3217 4773
Norcia PG 11 4957 9730
Sant'Anatolia di Narco PG 12 564 10294
Sellano PG 12 1079 11373
Preci PG 12 724 12097
Scheggino PG 13 461 12558
Monteleone di Spoleto PG 15 599 13157
Campello sul Clitunno PG 16 2442 15599
Spoleto PG 19 38218 53817
Visso MC 19 1107 54924
Castelsantangelo sul Nera MC 20 281 55205

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km SE of Foligno (57155 inhabitants)
36 Km NE of Terni (111501 inhabitants)
59 Km SE of Perugia (166134 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
62 Km W of Teramo (54892 inhabitants)
81 Km NE of Viterbo (67173 inhabitants)
89 Km N of Guidonia Montecelio (88673 inhabitants)
92 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 1.6 2014-02-20
22:36:09		 42.7857 12.9615 9 2015-09-21
09:34:15		 Bollettino Sismico Italiano INGV 14092571
Reviewed
Rev100 		ML 1.6 2014-02-20
22:36:10		 42.7865 12.963 8 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 5583171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2014-02-20 22:36:09 ± 0.05
Latitude 42.7857 ± 0.0018
Longitude 12.9615 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 14092571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 225
Semi-minor axis of confidence ellipse (meter) 214
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 288
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.55308
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 14092571
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2014-12-10 10:48:40

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 5583171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2014-02-20 22:51:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CIMA.HNZ. 2014-02-20T22:36:32.99 3.0 undecidable manual S -0.23 0
IV.EL6.EHZ. 2014-02-20T22:36:29.73 0.1 undecidable manual S 11 61.3941 50 0.32 87
IV.SNTG.HHZ. 2014-02-20T22:36:27.15 0.1 undecidable manual S 358 52.1034 50 0.22 91
IV.TOLF.HHZ. 2014-02-20T22:36:26.80 3.0 positive manual P -0.17 0
IV.CESX.HHZ. 2014-02-20T22:36:22.66 0.1 undecidable manual S 237 36.3414 50 -0.06 96
IV.SMA1.EHZ. 2014-02-20T22:36:22.52 0.1 undecidable manual S 119 35.0427 50 0.16 95
IV.ASSB.HHZ. 2014-02-20T22:36:22.97 0.1 undecidable manual S 319 37.629 50 -0.1 95
IV.EL6.EHZ. 2014-02-20T22:36:21.01 0.1 undecidable manual P 11 61.3941 50 -0.19 90
IV.MOMA.HHE. 2014-02-20T22:36:21.35 0.1 undecidable manual S 273 32.0457 105 -0.15 95
IV.ARRO.EHZ. 2014-02-20T22:36:20.52 0.1 undecidable manual S 215 27.9498 107 0.4 91
IV.FDMO.HHZ. 2014-02-20T22:36:20.24 0.1 undecidable manual S 20 29.6481 106 -0.45 90
IV.CESI.HHZ. 2014-02-20T22:36:19.25 0.1 undecidable manual S 349 24.753 109 0.17 96
IV.SNTG.HHZ. 2014-02-20T22:36:19.80 0.1 undecidable manual P 358 52.1034 50 0.03 94
IV.CSP1.EHZ. 2014-02-20T22:36:18.44 3.0 undecidable manual P 1.66 0
IV.FEMA.HNE. 2014-02-20T22:36:18.07 0.1 undecidable manual S 20 20.868 112 0.27 95
IV.ASSB.HHZ. 2014-02-20T22:36:17.38 0.1 undecidable manual P 319 37.629 50 -0.16 94
IV.LNSS.HHZ. 2014-02-20T22:36:17.84 0.1 undecidable manual S 162 21.2676 112 -0.1 98
IV.CESX.HHZ. 2014-02-20T22:36:17.08 0.1 undecidable manual P 237 36.3414 50 -0.26 92
IV.SMA1.EHZ. 2014-02-20T22:36:17.04 0.1 undecidable manual P 119 35.0427 50 -0.09 96
IV.MOMA.HHE. 2014-02-20T22:36:16.78 0.1 undecidable manual P 273 32.0457 105 0.14 95
IV.ARRO.EHZ. 2014-02-20T22:36:15.83 0.1 positive manual P 215 27.9498 107 -0.01 99
IV.FDMO.HHZ. 2014-02-20T22:36:15.93 0.1 positive manual P 20 29.6481 106 -0.24 94
IV.CESI.HHZ. 2014-02-20T22:36:15.35 0.1 undecidable manual P 349 24.753 109 0.12 97
IV.NRCA.HNZ. 2014-02-20T22:36:15.43 0.1 undecidable manual S 67 13.4754 122 -0.1 99
IV.LNSS.HHZ. 2014-02-20T22:36:14.58 0.1 positive manual P 162 21.2676 112 0 100
IV.FEMA.HNE. 2014-02-20T22:36:14.57 0.1 undecidable manual P 20 20.868 112 0.07 99
IV.NRCA.HNZ. 2014-02-20T22:36:13.31 0.1 positive manual P 67 13.4754 122 0.12 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.8 0.00004155 1.46 AML other m 2014-02-20T22:36:19.44
IV.CESI.HHE. ML:0.8 0.000032800000000000004 0.24 AML other m 2014-02-20T22:36:19.45
IV.FDMO.HHN. ML:1.4 0.0001255 0.18 AML other m 2014-02-20T22:36:20.52
IV.FDMO.HHE. ML:1.4 0.00014050000000000003 0.16 AML other m 2014-02-20T22:36:20.75
IV.LNSS.HHN. ML:1.6 0.0002925 0.3 AML other m 2014-02-20T22:36:18.01
IV.LNSS.HHE. ML:1.7 0.00034899999999999997 0.16 AML other m 2014-02-20T22:36:18.29
IV.NRCA.HHE. ML:1.8 0.0007055 0.08 AML other m 2014-02-20T22:36:15.67
IV.NRCA.HNE. ML:1.7 0.0006450000000000001 0.08 AML other m 2014-02-20T22:36:15.63
IV.NRCA.HHN. ML:1.8 0.0006865 0.16 AML other m 2014-02-20T22:36:15.51
IV.NRCA.HNN. ML:1.7 0.000634 0.16 AML other m 2014-02-20T22:36:15.52
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