Earthquake with magnitude of ML 1.3 on date 25-09-2018 and time 14:30:08 (Italy) in region 4 km S Montefalco (PG)

A magnitude ML 1.3 earthquake occured in region: 4 km S Montefalco (PG), on

  • 25-09-2018 12:30:08 (UTC)
  • 25-09-2018 14:30:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.86, 12.67 at 8 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
Montefalco PG 4 5679 5679
Castel Ritaldi PG 4 3278 8957
Trevi PG 7 8469 17426
Giano dell'Umbria PG 8 3846 21272
Bevagna PG 9 5081 26353
Campello sul Clitunno PG 10 2442 28795
Gualdo Cattaneo PG 10 6155 34950
Foligno PG 11 57155 92105
Spello PG 15 8645 100750
Massa Martana PG 15 3770 104520
Spoleto PG 15 38218 142738
Cannara PG 16 4305 147043
Collazzone PG 19 3473 150516
Vallo di Nera PG 19 364 150880
Sant'Anatolia di Narco PG 20 564 151444

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km S of Foligno (57155 inhabitants)
33 Km N of Terni (111501 inhabitants)
35 Km SE of Perugia (166134 inhabitants)
67 Km NE of Viterbo (67173 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
88 Km W of Teramo (54892 inhabitants)
93 Km SE of Arezzo (99543 inhabitants)
96 Km N of Guidonia Montecelio (88673 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 2018-09-25
12:30:08
42.86 12.67 8 2018-09-25
12:45:23
Sala Sismica INGV-Roma 61298501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-25 12:30:08 ± 0.07
Latitude 42.86 ± 0.00
Longitude 12.67 ± 0.01
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 61298501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 552
Semi-minor axis of confidence ellipse (meter) 336
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 265
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.56567
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 61298501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-25 12:45:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.GBOS.HHZ. 2018-09-25T12:31:34.61 3.0 undecidable manual Sn -3.64 0
IV.MTMR.HNZ. 2018-09-25T12:31:31.61 3.0 undecidable manual Sg 3.22 0
IV.ZONE.HHZ. 2018-09-25T12:31:29.71 3.0 undecidable manual Sg -1.46 0
IV.PAOL.HHZ. 2018-09-25T12:31:18.62 3.0 undecidable manual Sn -2.35 0
IV.EUCT.HNZ. 2018-09-25T12:31:18.43 3.0 undecidable manual Sn -9.99 0
IV.AMUR.HHZ. 2018-09-25T12:31:18.52 3.0 undecidable manual Pg 14.49 0
FR.SMPL.HHZ.00 2018-09-25T12:31:13.70 3.0 undecidable manual Sg 0.47 0
CR.STON.BHZ. 2018-09-25T12:31:03.32 3.0 undecidable manual Pn -2.35 0
IV.LTRZ.HNZ. 2018-09-25T12:31:03.92 3.0 undecidable manual Pn -4.37 0
GU.SATI.HHZ. 2018-09-25T12:31:03.51 3.0 undecidable manual Pn -4.33 0
IV.LAV9.HNZ. 2018-09-25T12:30:50.47 3.0 undecidable manual Sg 0.21 0
IV.EUCT.HNZ. 2018-09-25T12:30:50.70 3.0 undecidable manual Pg -1.87 0
IV.TREG.HNZ. 2018-09-25T12:30:49.69 3.0 negative manual Pg 4.03 0
GU.RNCA.HHZ. 2018-09-25T12:30:47.20 3.0 undecidable manual Pg -0.81 0
YD.T1413.HNZ. 2018-09-25T12:30:42.53 3.0 undecidable manual Pn -0.68 0
GU.GRAM.HHZ. 2018-09-25T12:30:40.13 3.0 negative manual Pg 0.87 0
IV.TOLF.HHZ. 2018-09-25T12:30:39.49 3.0 undecidable manual Sg 0.19 0
IV.NDIM.HHZ. 2018-09-25T12:30:30.89 3.0 negative manual Pn -7.66 0
IV.MML1.EHE. 2018-09-25T12:30:21.94 0.3 undecidable manual S 42 0.3363 50 0.24 92
IV.EL6.EHZ. 2018-09-25T12:30:19.80 0.6 undecidable manual P 34 0.5657 50 -0.31 58
IV.MOCL.EHZ. 2018-09-25T12:30:18.22 3.0 undecidable manual P -8.62 0
IV.CESX.HHZ. 2018-09-25T12:30:18.64 0.6 undecidable manual S 193 0.2599 106 -0.46 59
OB.GAVE.EHE. 2018-09-25T12:30:18.25 0.6 undecidable manual S 135 0.2383 108 -0.06 65
IV.LNSS.HHZ. 2018-09-25T12:30:17.18 0.6 undecidable manual P 133 0.3777 50 0.28 60
IV.MML1.EHE. 2018-09-25T12:30:16.04 0.3 undecidable manual P 42 0.3363 50 -0.16 93
IV.FDMO.HHE. 2018-09-25T12:30:16.30 0.6 undecidable manual P 60 0.3543 50 -0.2 62
IV.ASSB.HHZ. 2018-09-25T12:30:16.32 0.3 undecidable manual S 358 0.1808 113 0.08 98
IV.ARRO.EHZ. 2018-09-25T12:30:15.57 0.3 undecidable manual P 165 0.2914 105 0.19 94
IV.CESX.HHZ. 2018-09-25T12:30:14.72 0.6 undecidable manual P 193 0.2599 106 0.02 65
OB.GAVE.EHE. 2018-09-25T12:30:14.32 0.3 undecidable manual P 135 0.2383 108 0.08 97
IV.CESI.HHZ. 2018-09-25T12:30:13.91 0.3 undecidable manual P 51 0.2257 109 -0.07 97
IV.MOMA.HHZ. 2018-09-25T12:30:13.30 0.3 undecidable manual S 231 0.0908 130 0.06 100
IV.ASSB.HHZ. 2018-09-25T12:30:12.92 0.3 undecidable manual P 358 0.1808 113 -0.12 97
IV.MOMA.HHZ. 2018-09-25T12:30:11.47 0.3 undecidable manual P 231 0.0908 130 0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:1.5 0.0004684389 0.2624 AML other m 2018-09-25T12:30:13.94
IV.MOMA.HNN. ML:1.5 0.00040360795 0.2624 AML other m 2018-09-25T12:30:13.95
IV.MOMA.HNE. ML:1.5 0.0004522577 0.2496 AML other m 2018-09-25T12:30:13.93
IV.MOMA.HHE. ML:1.6 0.0004885615 0.1984 AML other m 2018-09-25T12:30:13.83
IV.ASSB.HHE. ML:1.1 9.559021E-5 0.1792 AML other m 2018-09-25T12:30:17.04
IV.ASSB.HHN. ML:1 7.866971E-5 0.1408 AML other m 2018-09-25T12:30:16.94
IV.CESX.HHN. ML:1 5.0488392E-5 0.8384 AML other m 2018-09-25T12:30:19.14
IV.CESX.HHE. ML:0.9 4.604597E-5 1.056 AML other m 2018-09-25T12:30:18.99
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