Earthquake with magnitude of ML 1.2 on date 01-09-2019 and time 19:02:21 (Italy) in region 4 km NW Arquata del Tronto (AP)

A magnitude ML 1.2 earthquake occured in region: 4 km NW Arquata del Tronto (AP), on

  • 01-09-2019 17:02:21 (UTC)
  • 01-09-2019 19:02:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8, 13.26 at 1 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 4 1178 1178
Montegallo AP 8 523 1701
Accumoli RI 12 667 2368
Acquasanta Terme AP 13 2916 5284
Montemonaco AP 13 604 5888
Norcia PG 14 4957 10845
Castelsantangelo sul Nera MC 14 281 11126
Montefortino FM 17 1178 12304
Roccafluvione AP 19 2010 14314
Amatrice RI 19 2657 16971
Ussita MC 19 444 17415
Palmiano AP 20 196 17611

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
49 Km E of Foligno (57155 inhabitants)
51 Km N of L'Aquila (69753 inhabitants)
57 Km E of Terni (111501 inhabitants)
79 Km E of Perugia (166134 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
86 Km W of Pescara (121014 inhabitants)
89 Km NW of Chieti (51815 inhabitants)
93 Km S of Ancona (100861 inhabitants)
99 Km NE of Guidonia Montecelio (88673 inhabitants)
100 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 1.2 2019-09-01
17:02:21
42.8 13.26 1 2019-09-01
17:14:32
Sala Sismica INGV-Roma 72025951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-01 17:02:21 ± 0.24
Latitude 42.80 ± 0.01
Longitude 13.26 ± 0.01
Depth (km) 1 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72025951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1270
Semi-minor axis of confidence ellipse (meter) 770
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 127
Circular confidence region, given by single value of horizontal uncertainty (meter) 1270
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 183
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.29588
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 72025951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-01 17:14:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
SI.KOSI.HHZ. 2019-09-01T17:04:06.87 3.0 undecidable manual Sg 4.01 0
IV.CMDO.HHZ. 2019-09-01T17:03:57.78 3.0 negative manual Pg 13.63 0
AC.VLO.HHZ. 2019-09-01T17:03:56.00 3.0 positive manual Pg 10.38 0
IV.DGI.HHZ. 2019-09-01T17:03:55.88 3.0 undecidable manual Sn -3.99 0
IV.ALJA.HHZ. 2019-09-01T17:03:55.45 3.0 negative manual Pg 15.28 0
MN.CLTB.HHZ. 2019-09-01T17:03:46.32 3.0 positive manual Pg 4.44 0
GU.STV.HHZ. 2019-09-01T17:03:41.37 3.0 negative manual Pg 16.690001 0
IV.PETRA.HHZ. 2019-09-01T17:03:41.32 3.0 undecidable manual Pn 1.62 0
GU.BLANC.HHZ. 2019-09-01T17:03:40.60 3.0 undecidable manual Pn 3.16 0
IV.MSRU.HHZ. 2019-09-01T17:03:37.39 3.0 negative manual Pn -1.21 0
IV.MILZ.HHZ. 2019-09-01T17:03:34.44 3.0 undecidable manual Pn -2.92 0
IV.SGRT.HHZ. 2019-09-01T17:03:30.44 3.0 undecidable manual Sn -5.63 0
IV.VAGA.HHZ. 2019-09-01T17:03:21.31 3.0 undecidable manual Sg 0.83 0
IV.CET2.HHZ. 2019-09-01T17:03:21.42 3.0 undecidable manual Pn -4.27 0
IV.RIBO.EHZ.01 2019-09-01T17:03:06.66 3.0 undecidable manual S 2.7 0
IT.VNF1.HGZ. 2019-09-01T17:02:54.03 3.0 positive manual Pg 1.68 0
IV.ARCI.HHZ. 2019-09-01T17:02:50.23 3.0 undecidable manual S -4.4 0
IV.MCIV.CHZ. 2019-09-01T17:02:39.91 3.0 negative manual P 2.74 0
IV.SACS.HHZ. 2019-09-01T17:02:39.32 3.0 undecidable manual S -4.9 0
IV.CSP1.EHZ. 2019-09-01T17:02:33.01 0.3 undecidable manual S 352 0.2959 91 0.54 70
IV.PE3.EHZ. 2019-09-01T17:02:32.86 3.0 positive manual P -3.88 0
IV.LNSS.HHZ. 2019-09-01T17:02:30.81 0.3 undecidable manual S 220 0.2545 91 -0.06 79
IV.FDMO.HHZ. 2019-09-01T17:02:30.92 0.3 undecidable manual S 332 0.2698 91 -0.55 70
IV.MF5.EHZ. 2019-09-01T17:02:30.48 0.3 undecidable manual S 37 0.2383 91 0.25 76
IV.APEC.HHZ. 2019-09-01T17:02:29.26 3.0 undecidable manual P -5.31 0
IV.CSP1.EHZ. 2019-09-01T17:02:28.12 1.0 positive manual P 352 0.2959 91 0.47 24
IV.FDMO.HHZ. 2019-09-01T17:02:27.07 0.6 undecidable manual P 332 0.2698 91 0 53
IV.LNSS.HHZ. 2019-09-01T17:02:26.91 0.6 negative manual P 220 0.2545 91 0.19 51
IV.MC2.EHZ. 2019-09-01T17:02:25.19 3.0 positive manual P -2.96 0
IV.MF5.EHZ. 2019-09-01T17:02:25.75 0.1 undecidable manual P 37 0.2383 91 -0.6 92
IV.NRCA.HHZ. 2019-09-01T17:02:25.20 0.3 undecidable manual S 288 0.1142 93 -0.26 77
IV.NRCA.HHZ. 2019-09-01T17:02:24.01 0.1 undecidable manual P 288 0.1142 93 0.41 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.5 0.0004811441 0.1536 AML other m 2019-09-01T17:02:25.68
IV.NRCA.HHN. ML:1.4 0.00032802275 0.1536 AML other m 2019-09-01T17:02:25.32
IV.NRCA.HNE. ML:1.5 0.00044616925 0.1664 AML other m 2019-09-01T17:02:25.67
IV.NRCA.HNN. ML:1.4 0.00032082015 0.1152 AML other m 2019-09-01T17:02:25.32
IV.LNSS.HHE. ML:1.1 7.257509E-5 0.128 AML other m 2019-09-01T17:02:31.08
IV.LNSS.HHN. ML:0.9 3.8152175E-5 0.1792 AML other m 2019-09-01T17:02:32.61
IV.FDMO.HHE. ML:0.5 1.251333E-5 0.2432 AML other m 2019-09-01T17:02:31.78
IV.FDMO.HHN. ML:0.5 1.621756E-5 0.128 AML other m 2019-09-01T17:02:31.37
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