INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.9 on date 09-09-2018 and time 15:49:45 (Italy) in region 4 km SE Gualdo Tadino (PG)

A magnitude ML 0.9 earthquake occured in region: 4 km SE Gualdo Tadino (PG), on

  • 09-09-2018 13:49:45 (UTC)
  • 09-09-2018 15:49:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.21, 12.82 at 20 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
Gualdo Tadino PG 4 15208 15208
Fiuminata MC 9 1402 16610
Fossato di Vico PG 11 2840 19450
Nocera Umbra PG 11 5839 25289
Esanatoglia MC 11 2034 27323
Sefro MC 13 422 27745
Pioraco MC 14 1134 28879
Sigillo PG 15 2404 31283
Fabriano AN 16 31480 62763
Matelica MC 16 9981 72744
Valtopina PG 18 1398 74142
Cerreto d'Esi AN 18 3817 77959
Serravalle di Chienti MC 19 1070 79029
Valfabbrica PG 19 3389 82418
Costacciaro PG 19 1216 83634
Castelraimondo MC 19 4587 88221

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NE of Foligno (57155 inhabitants)
37 Km E of Perugia (166134 inhabitants)
72 Km S of Fano (60888 inhabitants)
72 Km SW of Ancona (100861 inhabitants)
73 Km N of Terni (111501 inhabitants)
78 Km S of Pesaro (94582 inhabitants)
81 Km E of Arezzo (99543 inhabitants)
94 Km NW of Teramo (54892 inhabitants)
97 Km S of Rimini (147750 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 2018-09-09
13:49:45
43.21 12.82 20 2018-09-09
13:56:46
Sala Sismica INGV-Roma 60742851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-09 13:49:45 ± 0.18
Latitude 43.21 ± 0.01
Longitude 12.82 ± 0.01
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 60742851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 849
Semi-minor axis of confidence ellipse (meter) 290
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 238
Circular confidence region, given by single value of horizontal uncertainty (meter) 850
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 159
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
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
Epicentral distance of station farthest from the epicenter (degree) 0.2599
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 60742851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-09 13:56:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2018-09-09T13:49:56.62 0.1 undecidable manual S 132 0.2599 117 0.21 94
IV.MMO1.EHZ. 2018-09-09T13:49:56.80 3.0 undecidable manual P 0.42 0
IV.ATFO.HHZ. 2018-09-09T13:49:56.16 0.1 undecidable manual S 311 0.2401 119 0.28 92
IV.CESI.HHZ. 2018-09-09T13:49:55.30 0.1 undecidable manual S 163 0.2131 123 0.09 98
IV.MURB.HHZ. 2018-09-09T13:49:55.96 0.1 undecidable manual S 284 0.2221 122 0.53 88
IV.ASSB.HHZ. 2018-09-09T13:49:54.84 0.1 undecidable manual S 215 0.2041 124 -0.15 95
IV.ATCC.EHZ. 2018-09-09T13:49:53.44 0.1 undecidable manual S 260 0.134 138 0.02 100
IV.FOSV.EHZ. 2018-09-09T13:49:52.58 0.1 undecidable manual S 333 0.0953 148 -0.16 98
IV.CESI.HHZ. 2018-09-09T13:49:51.07 0.1 undecidable manual P 163 0.2131 123 -0.09 97
IV.ATFO.HHZ. 2018-09-09T13:49:51.22 0.1 undecidable manual P 311 0.2401 119 -0.33 92
IV.MURB.HHZ. 2018-09-09T13:49:51.12 0.1 undecidable manual P 284 0.2221 122 -0.17 95
IV.FDMO.HHZ. 2018-09-09T13:49:51.92 0.1 undecidable manual P 132 0.2599 117 0.07 96
IV.ATCC.EHZ. 2018-09-09T13:49:50.09 0.3 negative manual P 260 0.134 138 -0.04 75
IV.ASSB.HHZ. 2018-09-09T13:49:50.79 0.1 undecidable manual P 215 0.2041 124 -0.25 94
IV.FOSV.EHZ. 2018-09-09T13:49:49.65 0.1 undecidable manual P 333 0.0953 148 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHE. ML:0.8 3.85E-5 0.2 AML other m 2018-09-09T13:49:52.69
IV.FOSV.EHN. ML:0.8 4.07E-5 0.32 AML other m 2018-09-09T13:49:52.69
IV.ATCC.EHN. ML:1.3 0.0001135 0.38 AML other m 2018-09-09T13:49:53.57
IV.ATCC.EHE. ML:1.2 9.955E-5 1 AML other m 2018-09-09T13:49:53.49
IV.ASSB.HHE. ML:1 5.155E-5 1.7 AML other m 2018-09-09T13:49:54.96
IV.ASSB.HHN. ML:0.9 4.215E-5 0.3 AML other m 2018-09-09T13:49:55.01
IV.FDMO.HHN. ML:0.6 1.725E-5 0.18 AML other m 2018-09-09T13:49:57.32
IV.FDMO.HHE. ML:0.6 1.695E-5 1 AML other m 2018-09-09T13:49:57.93
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