Earthquake with magnitude of ML 1.1 on date 11-04-2019 and time 18:51:03 (Italy) in region 2 km S Arquata del Tronto (AP)

A magnitude ML 1.1 earthquake occured in region: 2 km S Arquata del Tronto (AP), on

  • 11-04-2019 16:51:03 (UTC)
  • 11-04-2019 18:51:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.76, 13.3 at 14 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
Arquata del Tronto AP 2 1178 1178
Accumoli RI 8 667 1845
Acquasanta Terme AP 9 2916 4761
Montegallo AP 10 523 5284
Amatrice RI 14 2657 7941
Montemonaco AP 16 604 8545
Valle Castellana TE 16 977 9522
Norcia PG 17 4957 14479
Roccafluvione AP 18 2010 16489
Castelsantangelo sul Nera MC 19 281 16770
Cittareale RI 19 482 17252

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km W of Teramo (54892 inhabitants)
46 Km N of L'Aquila (69753 inhabitants)
53 Km E of Foligno (57155 inhabitants)
58 Km E of Terni (111501 inhabitants)
75 Km W of Montesilvano (53738 inhabitants)
82 Km W of Pescara (121014 inhabitants)
84 Km E of Perugia (166134 inhabitants)
84 Km NW of Chieti (51815 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km S of Ancona (100861 inhabitants)
98 Km NE of Tivoli (56533 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 1.1 2019-04-11
16:51:03
42.76 13.3 14 2019-04-11
16:56:40
Sala Sismica INGV-Roma 67465711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-11 16:51:03 ± 0.07
Latitude 42.76 ± 0.00
Longitude 13.30 ± 0.00
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 67465711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 391
Semi-minor axis of confidence ellipse (meter) 227
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.07105
Epicentral distance of station farthest from the epicenter (degree) 0.37951
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 67465711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-11 16:56:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CESI.HHZ. 2019-04-11T16:51:16.88 0.1 undecidable manual S 310 0.3795 95 0.05 94
IV.GIGS.HHZ. 2019-04-11T16:51:16.25 0.1 undecidable manual S 147 0.366 95 -0.18 91
IV.CSP1.EHZ. 2019-04-11T16:51:15.55 0.1 undecidable manual S 348 0.339 96 -0.09 95
IV.FDMO.HHZ. 2019-04-11T16:51:14.69 0.1 undecidable manual S 331 0.3175 97 -0.31 91
IV.TERO.HHZ. 2019-04-11T16:51:13.19 0.3 undecidable manual S 121 0.2617 99 -0.17 70
IV.MF5.EHZ. 2019-04-11T16:51:13.71 0.1 undecidable manual S 27 0.2563 99 0.51 88
IV.RM33.EHZ. 2019-04-11T16:51:13.66 0.1 undecidable manual S 194 0.2581 99 0.4 91
IV.MC2.EHZ. 2019-04-11T16:51:11.03 0.3 undecidable manual S 332 0.1727 109 0.25 71
IV.CSP1.EHZ. 2019-04-11T16:51:10.13 0.3 positive manual P 348 0.339 96 -0.21 69
IV.GIGS.HHZ. 2019-04-11T16:51:10.87 1.0 undecidable manual P 147 0.366 95 0.07 24
IV.NRCA.HHZ. 2019-04-11T16:51:10.09 0.3 undecidable manual S 299 0.1547 113 -0.22 72
IV.CESI.HHZ. 2019-04-11T16:51:10.94 0.6 undecidable manual P 310 0.3795 95 -0.08 47
IV.MMO1.EHZ. 2019-04-11T16:51:09.72 0.3 undecidable manual S 8 0.1412 116 -0.21 72
IV.RM33.EHZ. 2019-04-11T16:51:09.14 0.6 undecidable manual P 194 0.2581 99 0.17 47
IV.SMA1.EHZ. 2019-04-11T16:51:09.61 0.3 undecidable manual S 169 0.1313 119 -0.07 74
IV.MF5.EHZ. 2019-04-11T16:51:09.21 0.3 positive manual P 27 0.2563 99 0.28 69
IV.FDMO.HHZ. 2019-04-11T16:51:09.68 0.6 positive manual P 331 0.3175 97 -0.29 46
IV.TERO.HHZ. 2019-04-11T16:51:08.86 0.3 undecidable manual P 121 0.2617 99 -0.17 70
IV.LNSS.HHZ. 2019-04-11T16:51:08.93 1.0 undecidable manual P 231 0.2473 100 0.15 24
IV.MTRA.HNZ. 2019-04-11T16:51:08.34 0.3 undecidable manual S 92 0.071 142 0.03 76
IV.MC2.EHZ. 2019-04-11T16:51:07.58 1.0 undecidable manual P 332 0.1727 109 0.04 25
IV.SMA1.EHZ. 2019-04-11T16:51:07.09 0.3 positive manual P 169 0.1313 119 0.19 73
IV.NRCA.HHZ. 2019-04-11T16:51:07.18 0.1 undecidable manual P 299 0.1547 113 -0.08 98
IV.MTRA.HNZ. 2019-04-11T16:51:06.19 0.1 undecidable manual P 92 0.071 142 0.08 100
IV.MMO1.EHZ. 2019-04-11T16:51:06.94 0.1 undecidable manual P 8 0.1412 116 -0.1 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1 0.0001063 0.22 AML other m 2019-04-11T16:51:08.42
IV.MTRA.EHN. ML:0.9 9.285E-5 0.3 AML other m 2019-04-11T16:51:08.58
IV.SMA1.EHN. ML:1.3 0.000182 1.66 AML other m 2019-04-11T16:51:09.08
IV.NRCA.HHE. ML:1.2 0.0001205 0.46 AML other m 2019-04-11T16:51:10.59
IV.SMA1.EHE. ML:1.3 0.0001765 0.2 AML other m 2019-04-11T16:51:10.39
IV.NRCA.HHN. ML:1.2 0.0001097 0.1 AML other m 2019-04-11T16:51:10.47
IV.TERO.HHN. ML:1 4.835E-5 0.96 AML other m 2019-04-11T16:51:13.31
IV.TERO.HHE. ML:0.9 3.58E-5 0.6 AML other m 2019-04-11T16:51:14.68
IV.FDMO.HHN. ML:1.1 4.555E-5 1.78 AML other m 2019-04-11T16:51:15.07
IV.FDMO.HHE. ML:1 3.56E-5 0.12 AML other m 2019-04-11T16:51:15.68
IV.CESI.HHE. ML:0.9 2.44E-5 0.36 AML other m 2019-04-11T16:51:17.20
IV.CESI.HHN. ML:1.2 4.885E-5 0.52 AML other m 2019-04-11T16:51:17.39
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