Earthquake with magnitude of ML 0.9 on date 29-09-2018 and time 06:47:12 (Italy) in region 2 km NW Spoleto (PG)

A magnitude ML 0.9 earthquake occured in region: 2 km NW Spoleto (PG), on

  • 29-09-2018 04:47:12 (UTC)
  • 29-09-2018 06:47:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.75, 12.73 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Spoleto PG 2 38218 38218
Campello sul Clitunno PG 9 2442 40660
Sant'Anatolia di Narco PG 9 564 41224
Castel Ritaldi PG 9 3278 44502
Scheggino PG 10 461 44963
Vallo di Nera PG 11 364 45327
Trevi PG 14 8469 53796
Ferentillo TR 15 1913 55709
Giano dell'Umbria PG 15 3846 59555
Acquasparta TR 16 4778 64333
Massa Martana PG 17 3770 68103
Montefalco PG 17 5679 73782
Montefranco TR 17 1276 75058
Cerreto di Spoleto PG 17 1075 76133
Poggiodomo PG 18 117 76250
Arrone TR 19 2763 79013

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NE of Terni (111501 inhabitants)
23 Km S of Foligno (57155 inhabitants)
48 Km SE of Perugia (166134 inhabitants)
63 Km NE of Viterbo (67173 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
81 Km W of Teramo (54892 inhabitants)
83 Km N of Guidonia Montecelio (88673 inhabitants)
88 Km N of Tivoli (56533 inhabitants)
97 Km N of Roma (2864731 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 0.9 2018-09-29
04:47:12
42.75 12.73 10 2018-09-29
05:48:07
Sala Sismica INGV-Roma 61439581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-29 04:47:12 ± 0.05
Latitude 42.75 ± 0.00
Longitude 12.73 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 61439581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 870
Semi-minor axis of confidence ellipse (meter) 308
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 243
Circular confidence region, given by single value of horizontal uncertainty (meter) 870
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.43167
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 61439581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-29 05:48:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MILN.HNZ. 2018-09-29T04:48:42.96 3.0 undecidable manual Sg 7.06 0
AC.SRN.HHZ. 2018-09-29T04:48:40.65 3.0 undecidable manual Pn -0.14 0
IV.EUCT.HNZ. 2018-09-29T04:48:36.34 3.0 undecidable manual Sg 4.81 0
IV.CIGN.HHZ. 2018-09-29T04:48:26.47 3.0 undecidable manual Sg 14.84 0
GU.GRAM.HHZ. 2018-09-29T04:48:05.60 3.0 undecidable manual Sg -2.46 0
IV.CTI.HHZ. 2018-09-29T04:47:59.24 3.0 undecidable manual Pg 3.55 0
OX.VARN.HHZ. 2018-09-29T04:47:57.73 3.0 negative manual Pg 2.84 0
GU.BHB.HHZ. 2018-09-29T04:47:52.86 3.0 undecidable manual Pn -9.99 0
IV.ZONE.HHZ. 2018-09-29T04:47:52.44 3.0 negative manual Pn -2.82 0
IV.ROM9.HNZ. 2018-09-29T04:47:45.46 3.0 undecidable manual Sg 9.46 0
IV.SARZ.HHZ. 2018-09-29T04:47:42.80 3.0 negative manual Pn -8.84 0
IV.SGG.HHZ. 2018-09-29T04:47:42.40 3.0 negative manual Pn 2.83 0
IV.VAGA.HHZ. 2018-09-29T04:47:40.02 3.0 negative manual Pn 1.87 0
IV.CAVE.HHZ. 2018-09-29T04:47:33.83 3.0 positive manual Pn -7 0
IV.RM33.EHZ. 2018-09-29T04:47:28.32 0.3 undecidable manual S 124 0.4317 50 -0.08 70
IV.FDMO.HHZ. 2018-09-29T04:47:27.28 0.6 undecidable manual S 43 0.3894 50 0.15 46
IV.ASSB.HHZ. 2018-09-29T04:47:24.62 0.6 undecidable manual S 350 0.2968 50 0.24 46
IV.CESI.HHZ. 2018-09-29T04:47:24.04 0.6 undecidable manual S 27 0.286 50 -0.03 48
IV.RMP.HHZ. 2018-09-29T04:47:23.50 3.0 undecidable manual Pn 0.01 0
IV.CSP1.EHZ. 2018-09-29T04:47:22.84 3.0 positive manual Pn -1.02 0
IV.FDMO.HHZ. 2018-09-29T04:47:21.05 0.1 undecidable manual P 43 0.3894 50 -0.09 94
IV.RM33.EHZ. 2018-09-29T04:47:21.75 0.1 undecidable manual P 124 0.4317 50 -0.13 92
IV.CESX.HHZ. 2018-09-29T04:47:20.46 0.6 undecidable manual S 216 0.1754 118 -0.14 48
IV.ARRO.EHZ. 2018-09-29T04:47:20.74 0.6 undecidable manual S 171 0.1736 118 0.2 48
IV.CESI.HHZ. 2018-09-29T04:47:19.16 0.1 undecidable manual P 27 0.286 50 -0.21 93
IV.ASSB.HHZ. 2018-09-29T04:47:19.78 0.1 undecidable manual P 350 0.2968 50 0.22 93
IV.MOMA.HHZ. 2018-09-29T04:47:18.85 0.6 undecidable manual S 295 0.1268 126 -0.17 48
IV.CESX.HHZ. 2018-09-29T04:47:17.36 0.1 undecidable manual P 216 0.1754 118 -0.02 99
IV.ARRO.EHZ. 2018-09-29T04:47:17.53 0.1 undecidable manual P 171 0.1736 118 0.19 96
IV.MOMA.HHZ. 2018-09-29T04:47:16.44 0.1 undecidable manual P 295 0.1268 126 -0.02 100
TV.SF04.EHZ. 2018-09-29T04:47:11.17 3.0 negative manual Pn -4.23 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:1 0.0001125 0.18 AML other m 2018-09-29T04:47:19.35
IV.MOMA.HHN. ML:1 0.000109 0.24 AML other m 2018-09-29T04:47:20.66
IV.ARRO.EHN. ML:0.7 3.56E-5 0.18 AML other m 2018-09-29T04:47:21.96
IV.CESX.HHE. ML:0.9 6.05E-5 0.72 AML other m 2018-09-29T04:47:22.97
IV.CESX.HHN. ML:1 6.965E-5 0.56 AML other m 2018-09-29T04:47:22.67
IV.ARRO.EHE. ML:0.7 3.65E-5 0.16 AML other m 2018-09-29T04:47:22.77
IV.CESI.HHN. ML:1.1 6.175E-5 0.18 AML other m 2018-09-29T04:47:24.20
IV.FDMO.HHE. ML:0.8 2.105E-5 0.96 AML other m 2018-09-29T04:47:27.12
IV.FDMO.HHN. ML:0.8 1.9E-5 0.82 AML other m 2018-09-29T04:47:27.97
IV.CESI.HHE. ML:0.8 2.84E-5 0.96 AML other m 2018-09-29T04:47:29.48
IV.ZONE.HHN. ML:3.2 8.92E-5 0.22 AML other m 2018-09-29T04:48:09.51
IV.ZONE.HHE. ML:3 5.335E-5 0.24 AML other m 2018-09-29T04:48:12.76
OX.VARN.HHE. ML:3.5 0.000232 1.04 AML other m 2018-09-29T04:48:57.39
OX.VARN.HNE. ML:3.4 0.0001995 1.04 AML other m 2018-09-29T04:48:57.39
OX.VARN.HNN. ML:3.2 0.00011635 1.06 AML other m 2018-09-29T04:48:58.57
OX.VARN.HHN. ML:3.2 0.0001095 1.08 AML other m 2018-09-29T04:48:58.58
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download