Earthquake with magnitude of ML 0.9 on date 22-10-2019 and time 04:26:05 (UTC) in region 7 km W Arquata del Tronto (AP)

A magnitude ML 0.9 earthquake occured in region: 7 km W Arquata del Tronto (AP), on

  • 22-10-2019 04:26:05 (UTC)
  • 22-10-2019 06:26:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.77, 13.21 at 10 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 8 1178 1178
Accumoli RI 9 667 1845
Norcia PG 10 4957 6802
Montegallo AP 13 523 7325
Castelsantangelo sul Nera MC 15 281 7606
Acquasanta Terme AP 17 2916 10522
Cascia PG 17 3217 13739
Amatrice RI 17 2657 16396
Cittareale RI 17 482 16878
Montemonaco AP 18 604 17482
Preci PG 18 724 18206

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km W of Teramo (54892 inhabitants)
46 Km E of Foligno (57155 inhabitants)
49 Km NW of L'Aquila (69753 inhabitants)
51 Km E of Terni (111501 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
89 Km W of Pescara (121014 inhabitants)
91 Km NW of Chieti (51815 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
98 Km S of Ancona (100861 inhabitants)
98 Km E of Viterbo (67173 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 0.9 2019-10-22
04:26:05
42.77 13.21 10 2019-10-22
04:41:18
Sala Sismica INGV-Roma 73384431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-22 04:26:05 ± 0.06
Latitude 42.77 ± 0.00
Longitude 13.21 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73384431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 333
Semi-minor axis of confidence ellipse (meter) 289
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 66
Circular confidence region, given by single value of horizontal uncertainty (meter) 330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.09443
Epicentral distance of station farthest from the epicenter (degree) 0.32555
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 73384431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-22 04:41:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2019-10-22T04:26:17.24 0.3 undecidable manual S 116 0.3256 50 -0.21 69
IV.RM33.EHZ. 2019-10-22T04:26:15.63 0.3 undecidable manual S 179 0.259 50 0.16 70
IV.LNSS.HNE. 2019-10-22T04:26:13.75 0.3 undecidable manual S 217 0.2059 114 -0.07 72
IV.TERO.HHZ. 2019-10-22T04:26:12.04 0.3 undecidable manual P 116 0.3256 50 -0.21 69
IV.SMA1.EHZ. 2019-10-22T04:26:12.60 0.3 undecidable manual S 146 0.1673 119 0.12 72
IV.MC2.EHZ. 2019-10-22T04:26:11.85 0.6 undecidable manual S 355 0.1439 123 0.14 48
IV.MTRA.EHZ. 2019-10-22T04:26:11.54 0.3 undecidable manual S 95 0.1394 123 -0.05 74
IV.MMO1.EHZ. 2019-10-22T04:26:11.96 0.3 undecidable manual S 34 0.1574 120 -0.22 71
IV.RM33.EHZ. 2019-10-22T04:26:11.07 0.3 undecidable manual P 179 0.259 50 -0.04 72
IV.MF5.EHZ. 2019-10-22T04:26:11.75 0.3 undecidable manual P 40 0.2869 50 0.17 70
IV.LNSS.HNE. 2019-10-22T04:26:10.04 0.1 undecidable manual P 217 0.2059 114 -0.11 96
IV.NRCA.HHZ. 2019-10-22T04:26:09.98 0.3 undecidable manual S 314 0.0944 134 -0.23 72
IV.SMA1.EHZ. 2019-10-22T04:26:09.46 0.1 undecidable manual P 146 0.1673 119 0.08 97
IV.MC2.EHZ. 2019-10-22T04:26:09.44 0.3 undecidable manual P 355 0.1439 123 0.5 67
IV.MTRA.EHZ. 2019-10-22T04:26:09.02 0.1 undecidable manual P 95 0.1394 123 0.16 96
IV.MMO1.EHZ. 2019-10-22T04:26:09.07 0.1 undecidable manual P 34 0.1574 120 -0.13 96
IV.NRCA.HHZ. 2019-10-22T04:26:08.07 0.1 positive manual P 314 0.0944 134 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.3 0.0002255 0.14 AML other m 2019-10-22T04:26:10.15
IV.NRCA.HHN. ML:1.2 0.0001845 0.76 AML other m 2019-10-22T04:26:10.50
IV.MTRA.EHE. ML:0.8 5.51E-5 0.36 AML other m 2019-10-22T04:26:11.69
IV.MTRA.EHN. ML:0.8 5.78E-5 1.24 AML other m 2019-10-22T04:26:12.12
IV.TERO.HHN. ML:0.7 2.0105E-5 1.08 AML other m 2019-10-22T04:26:17.88
IV.TERO.HHE. ML:0.7 1.845E-5 0.44 AML other m 2019-10-22T04:26:17.60
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