Earthquake with magnitude of ML 1.3 on date 26-09-2018 and time 15:53:42 (Italy) in region 11 km SE Valtopina (PG)

A magnitude ML 1.3 earthquake occured in region: 11 km SE Valtopina (PG), on

  • 26-09-2018 13:53:42 (UTC)
  • 26-09-2018 15:53:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.98, 12.84 at 11 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
Valtopina PG 11 1398 1398
Foligno PG 12 57155 58553
Sellano PG 13 1079 59632
Monte Cavallo MC 13 145 59777
Serravalle di Chienti MC 13 1070 60847
Spello PG 14 8645 69492
Trevi PG 14 8469 77961
Nocera Umbra PG 15 5839 83800
Pieve Torina MC 18 1458 85258
Montefalco PG 18 5679 90937
Campello sul Clitunno PG 19 2442 93379
Cerreto di Spoleto PG 19 1075 94454
Bevagna PG 20 5081 99535
Muccia MC 20 915 100450
Preci PG 20 724 101174

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km E of Foligno (57155 inhabitants)
39 Km E of Perugia (166134 inhabitants)
50 Km NE of Terni (111501 inhabitants)
79 Km W of Teramo (54892 inhabitants)
84 Km NW of L'Aquila (69753 inhabitants)
87 Km NE of Viterbo (67173 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
95 Km SE of Arezzo (99543 inhabitants)
97 Km S of Fano (60888 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 1.3 2018-09-26
13:53:42
42.98 12.84 11 2018-09-26
14:07:12
Sala Sismica INGV-Roma 61333761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-26 13:53:42 ± 0.11
Latitude 42.98 ± 0.01
Longitude 12.84 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 61333761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 733
Semi-minor axis of confidence ellipse (meter) 616
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 346
Circular confidence region, given by single value of horizontal uncertainty (meter) 730
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 167
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 12
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) 0.3939
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 61333761
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-26 14:07:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VARE.HHZ. 2018-09-26T13:55:26.18 3.0 undecidable manual Sg 7.41 0
IV.MILN.HNZ. 2018-09-26T13:55:09.10 3.0 undecidable manual Sg 2.63 0
IV.ILLI.HHZ. 2018-09-26T13:55:04.30 3.0 positive manual Pg 9.97 0
IV.EUCT.HNZ. 2018-09-26T13:54:59.83 3.0 undecidable manual Sn -3.22 0
IV.PTRJ.HNZ. 2018-09-26T13:54:55.60 3.0 undecidable manual Sg 5.47 0
IV.PETRA.HHZ. 2018-09-26T13:54:53.99 3.0 undecidable manual Pn -5.48 0
IV.CRND.HNZ. 2018-09-26T13:54:53.72 3.0 undecidable manual Sg -0.43 0
IV.SALB.HHZ. 2018-09-26T13:54:48.51 3.0 positive manual Pn 3.05 0
IV.ZONE.HHZ. 2018-09-26T13:54:24.54 3.0 positive manual Pn -0.02 0
IV.VITU.HHZ. 2018-09-26T13:54:19.97 3.0 undecidable manual Pn -0.18 0
IV.EL6.EHZ. 2018-09-26T13:53:56.56 0.3 undecidable manual S 29 0.3939 50 0.19 69
IV.MAON.HHZ. 2018-09-26T13:53:53.36 3.0 positive manual P -5.58 0
IV.NRCA.HNE. 2018-09-26T13:53:51.82 0.3 undecidable manual S 127 0.2491 50 -0.28 70
IV.FDMO.HHZ. 2018-09-26T13:53:50.23 0.1 undecidable manual S 74 0.1871 50 -0.01 100
IV.PESA.HHZ. 2018-09-26T13:53:50.87 3.0 undecidable manual P -3.14 0
IV.EL6.EHZ. 2018-09-26T13:53:50.42 0.1 undecidable manual P 29 0.3939 50 0.04 95
IV.PIEI.HHZ. 2018-09-26T13:53:49.97 3.0 undecidable manual S -1.69 0
IV.MML1.HNN. 2018-09-26T13:53:49.13 0.1 undecidable manual S 36 0.1601 121 -0.31 94
IV.ASSB.HHZ. 2018-09-26T13:53:48.52 0.3 undecidable manual S 294 0.1466 124 -0.46 69
IV.NRCA.HNE. 2018-09-26T13:53:47.93 0.1 undecidable manual P 127 0.2491 50 0.01 98
IV.CESI.HHZ. 2018-09-26T13:53:46.60 0.1 undecidable manual S 65 0.0504 153 0.17 99
IV.MML1.HNN. 2018-09-26T13:53:46.40 0.1 undecidable manual P 36 0.1601 121 0.02 100
IV.ASSB.HHZ. 2018-09-26T13:53:46.45 0.1 undecidable manual P 294 0.1466 124 0.34 94
IV.FDMO.HHZ. 2018-09-26T13:53:46.88 0.6 positive manual P 74 0.1871 50 0.04 50
IV.CESI.HHZ. 2018-09-26T13:53:45.04 1.0 undecidable manual P 65 0.0504 153 0.4 24
IV.MCIV.HHZ. 2018-09-26T13:53:44.01 3.0 negative manual P -5.05 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.3 0.0002925 0.44 AML other m 2018-09-26T13:53:46.99
IV.CESI.HHN. ML:1.2 0.000248 0.12 AML other m 2018-09-26T13:53:47.46
IV.SALB.HHN. ML:3.7 0.0001835 0.6 AML other m 2018-09-26T13:55:30.52
IV.SALB.HHE. ML:3.7 0.000214 1.08 AML other m 2018-09-26T13:56:00.07
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