Earthquake with magnitude of ML 0.7 on date 22-10-2019 and time 18:09:29 (UTC) in region 9 km NW Arquata del Tronto (AP)

A magnitude ML 0.7 earthquake occured in region: 9 km NW Arquata del Tronto (AP), on

  • 22-10-2019 18:09:29 (UTC)
  • 22-10-2019 20:09:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.82, 13.22 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
Arquata del Tronto AP 9 1178 1178
Castelsantangelo sul Nera MC 9 281 1459
Montegallo AP 10 523 1982
Norcia PG 11 4957 6939
Montemonaco AP 12 604 7543
Accumoli RI 15 667 8210
Ussita MC 15 444 8654
Preci PG 16 724 9378
Visso MC 16 1107 10485
Montefortino FM 17 1178 11663
Acquasanta Terme AP 17 2916 14579
Bolognola MC 19 142 14721

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Teramo (54892 inhabitants)
44 Km E of Foligno (57155 inhabitants)
55 Km N of L'Aquila (69753 inhabitants)
55 Km NE of Terni (111501 inhabitants)
74 Km E of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
92 Km S of Ancona (100861 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
100 Km NE 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 0.7 2019-10-22
18:09:29
42.82 13.22 11 2019-10-22
18:16:11
Sala Sismica INGV-Roma 73394501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-22 18:09:29 ± 0.14
Latitude 42.82 ± 0.01
Longitude 13.22 ± 0.01
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73394501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 808
Semi-minor axis of confidence ellipse (meter) 278
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 65
Circular confidence region, given by single value of horizontal uncertainty (meter) 810
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.07464
Epicentral distance of station farthest from the epicenter (degree) 0.34894
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 73394501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-22 18:16:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SMA1.EHZ. 2019-10-22T18:09:38.29 0.6 undecidable manual S 156 0.2131 50 -0.27 47
IV.FDMO.HHZ. 2019-10-22T18:09:38.77 0.6 undecidable manual S 336 0.232 50 -0.34 46
IV.TERO.HHZ. 2019-10-22T18:09:37.42 0.6 undecidable manual P 125 0.3489 50 0.24 46
IV.LNSS.HHZ. 2019-10-22T18:09:36.23 1.0 undecidable manual P 210 0.2563 50 0.64 21
IV.FDMO.HHZ. 2019-10-22T18:09:35.38 0.6 undecidable manual P 336 0.232 50 0.21 47
IV.CSP1.EHZ. 2019-10-22T18:09:35.60 1.0 positive manual P 358 0.2671 50 -0.18 24
IV.MMO1.EHZ. 2019-10-22T18:09:35.49 0.6 undecidable manual S 47 0.1106 132 -0.03 50
IV.NRCA.HHZ. 2019-10-22T18:09:34.57 0.3 undecidable manual S 277 0.0746 143 -0.02 75
IV.SMA1.EHZ. 2019-10-22T18:09:34.62 0.1 undecidable manual P 156 0.2131 50 -0.23 95
IV.MMO1.EHZ. 2019-10-22T18:09:33.07 1.0 undecidable manual P 47 0.1106 132 -0.03 25
IV.NRCA.HHZ. 2019-10-22T18:09:32.69 0.1 positive manual P 277 0.0746 143 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.9 9.97773E-5 0.1536 AML other m 2019-10-22T18:09:35.37
IV.NRCA.HHN. ML:0.8 7.8133395E-5 0.0768 AML other m 2019-10-22T18:09:35.42
IV.NRCA.HNE. ML:0.9 0.00011055963 0.1536 AML other m 2019-10-22T18:09:35.37
IV.NRCA.HNN. ML:1 0.000118658845 0.6656 AML other m 2019-10-22T18:09:32.15
IV.FDMO.HHE. ML:0.2 8.15612385E-6 0.1024 AML other m 2019-10-22T18:09:39.20
IV.FDMO.HHN. ML:0.4 1.4086819E-5 0.2176 AML other m 2019-10-22T18:09:39.07
IV.CSP1.EHE. ML:0.7 2.3639775E-5 0.9984 AML other m 2019-10-22T18:09:38.20
IV.TERO.HHE. ML:0.6 1.6328925E-5 0.0768 AML other m 2019-10-22T18:09:42.92
IV.TERO.HHN. ML:0.8 1.8882095E-5 0.0768 AML other m 2019-10-22T18:09:42.92
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