Earthquake with magnitude of ML 1.6 on date 11-09-2019 and time 17:18:30 (Italy) in region 4 km SE Assisi (PG)

A magnitude ML 1.6 earthquake occured in region: 4 km SE Assisi (PG), on

  • 11-09-2019 15:18:30 (UTC)
  • 11-09-2019 17:18:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.05, 12.65 at 6 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
Assisi PG 4 28299 28299
Spello PG 6 8645 36944
Cannara PG 8 4305 41249
Valtopina PG 9 1398 42647
Bastia Umbra PG 9 21874 64521
Foligno PG 11 57155 121676
Bevagna PG 13 5081 126757
Valfabbrica PG 13 3389 130146
Nocera Umbra PG 13 5839 135985
Bettona PG 14 4367 140352
Montefalco PG 17 5679 146031
Gualdo Cattaneo PG 17 6155 152186
Torgiano PG 18 6725 158911

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km NW of Foligno (57155 inhabitants)
22 Km E of Perugia (166134 inhabitants)
54 Km N of Terni (111501 inhabitants)
78 Km SE of Arezzo (99543 inhabitants)
83 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Fano (60888 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
96 Km W of Teramo (54892 inhabitants)
98 Km S of Pesaro (94582 inhabitants)
98 Km NW of L'Aquila (69753 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 1.6 2019-09-11
15:18:30
43.05 12.65 6 2019-09-11
15:41:06
Sala Sismica INGV-Roma 72315401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-11 15:18:30 ± 0.11
Latitude 43.05 ± 0.01
Longitude 12.65 ± 0.01
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72315401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 580
Semi-minor axis of confidence ellipse (meter) 382
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 217
Circular confidence region, given by single value of horizontal uncertainty (meter) 580
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.49643
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 72315401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-11 15:41:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CH.BERNI.HHZ. 2019-09-11T15:20:17.31 3.0 undecidable manual Sn -2.62 0
IV.SARZ.HHZ. 2019-09-11T15:20:16.37 3.0 undecidable manual Sg 8.06 0
IV.QLNO.HHZ. 2019-09-11T15:20:09.64 3.0 undecidable manual Sn -2.87 0
IV.GRI.EHZ. 2019-09-11T15:20:09.98 3.0 negative manual Pg 15.23 0
IV.MILN.HNZ. 2019-09-11T15:20:05.20 3.0 undecidable manual Sn -6.81 0
IV.ECTS.EHZ. 2019-09-11T15:20:04.29 3.0 undecidable manual Pn 3.34 0
MN.TRI.HHZ. 2019-09-11T15:19:51.20 3.0 undecidable manual Sg 0.53 0
IV.LRP.EHZ. 2019-09-11T15:19:30.06 3.0 undecidable manual Sg -1.15 0
IV.PII.HHZ. 2019-09-11T15:19:25.69 3.0 undecidable manual Sn -5.86 0
IV.VCEL.EHZ. 2019-09-11T15:19:12.96 3.0 undecidable manual S -4.33 0
IV.SGG.HHZ. 2019-09-11T15:19:10.75 3.0 positive manual Pn -2.78 0
IV.EL6.EHZ. 2019-09-11T15:18:47.06 0.3 undecidable manual S 49 0.4326 50 0.07 69
IV.ATVO.HHZ. 2019-09-11T15:18:45.11 0.3 undecidable manual S 332 0.3804 98 -0.22 68
IV.ATLO.EHE. 2019-09-11T15:18:43.39 0.3 undecidable manual S 326 0.322 99 0.26 68
IV.SNTG.HHZ. 2019-09-11T15:18:42.29 0.3 undecidable manual S 45 0.2959 100 0.18 69
IV.PIEI.HHZ. 2019-09-11T15:18:41.41 0.3 undecidable manual P 350 0.4964 50 0.28 65
IV.MGAB.HHE. 2019-09-11T15:18:40.03 0.3 undecidable manual P 251 0.4173 50 0.25 67
IV.FRON.EHZ. 2019-09-11T15:18:40.34 0.1 undecidable manual P 6 0.4739 50 -0.41 85
IV.MURB.HHZ. 2019-09-11T15:18:40.78 0.3 undecidable manual S 337 0.2356 102 0.94 54
IV.MML1.EHE. 2019-09-11T15:18:40.63 0.3 undecidable manual S 74 0.2419 102 0.53 65
IV.GAVE.EHZ. 2019-09-11T15:18:39.50 0.3 undecidable manual P 153 0.3957 50 0.08 69
IV.EL6.EHZ. 2019-09-11T15:18:39.73 0.1 undecidable manual P 49 0.4326 50 -0.31 87
IV.CSP1.EHZ. 2019-09-11T15:18:39.16 0.3 undecidable manual P 83 0.4056 50 -0.43 64
IV.SSFR.HNZ. 2019-09-11T15:18:39.75 0.3 undecidable manual P 14 0.4002 50 0.25 67
IV.ATVO.HHZ. 2019-09-11T15:18:38.63 0.3 undecidable manual P 332 0.3804 98 -0.45 64
IV.ATVA.EHE. 2019-09-11T15:18:38.32 0.1 undecidable manual P 311 0.3543 98 -0.19 91
IV.SNTG.HHZ. 2019-09-11T15:18:37.22 0.1 undecidable manual P 45 0.2959 100 -0.01 96
IV.ATFO.HHZ. 2019-09-11T15:18:37.95 0.3 undecidable manual P 350 0.3247 99 0.08 70
IV.ATLO.EHE. 2019-09-11T15:18:37.61 0.1 undecidable manual P 326 0.322 99 -0.2 91
IV.MURB.HHZ. 2019-09-11T15:18:36.16 0.1 undecidable manual P 337 0.2356 102 0.25 92
IV.MML1.EHE. 2019-09-11T15:18:36.19 0.1 undecidable manual P 74 0.2419 102 0.13 94
IV.MOMA.HHE. 2019-09-11T15:18:36.66 0.3 undecidable manual P 194 0.25 102 0.43 66
IV.FOSV.EHZ. 2019-09-11T15:18:35.87 0.1 undecidable manual P 18 0.2599 101 -0.58 84
IV.ASSB.HHZ. 2019-09-11T15:18:32.12 0.3 undecidable manual S 133 0.0063 173 -0.45 69
IV.ASSB.HHZ. 2019-09-11T15:18:31.78 0.1 undecidable manual P 133 0.0063 173 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HHE. ML:1.9 0.000447777 0.3584 AML other m 2019-09-11T15:18:41.46
IV.MURB.HHN. ML:1.8 0.0003475615 0.192 AML other m 2019-09-11T15:18:42.96
IV.MURB.HNE. ML:1.8 0.00039163665 0.384 AML other m 2019-09-11T15:18:41.46
IV.MURB.HNN. ML:1.6 0.0002564787 0.192 AML other m 2019-09-11T15:18:42.96
IV.ATVO.HHE. ML:0.9 2.314811E-5 0.2048 AML other m 2019-09-11T15:18:46.95
IV.ATVO.HHN. ML:0.9 2.520674E-5 0.3456 AML other m 2019-09-11T15:18:45.78
IV.EL6.EHE. ML:1.6 0.000126180365 0.4352 AML other m 2019-09-11T15:18:47.14
IV.EL6.EHN. ML:1.5 9.716411E-5 0.3584 AML other m 2019-09-11T15:18:49.71
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