Earthquake with magnitude of ML 0.9 on date 18-10-2019 and time 14:53:42 (Italy) in region Opi (AQ)

A magnitude ML 0.9 earthquake occured in region: Opi (AQ), on

  • 18-10-2019 12:53:42 (UTC)
  • 18-10-2019 14:53:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.78, 13.83 at 9 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
Opi AQ 0 420 420
Pescasseroli AQ 4 2203 2623
San Donato Val di Comino FR 8 2107 4730
Villetta Barrea AQ 8 653 5383
Civitella Alfedena AQ 10 296 5679
Settefrati FR 13 728 6407
Alvito FR 13 2713 9120
Campoli Appennino FR 13 1725 10845
Barrea AQ 14 726 11571
Gallinaro FR 14 1269 12840
Scanno AQ 14 1847 14687
Posta Fibreno FR 15 1139 15826
Pescosolido FR 15 1555 17381
Picinisco FR 15 1218 18599
Vicalvi FR 15 783 19382
Bisegna AQ 17 223 19605
Villalago AQ 17 568 20173
Fontechiari FR 18 1303 21476
Scontrone AQ 18 574 22050
Alfedena AQ 18 864 22914
Atina FR 18 4316 27230
Broccostella FR 18 2741 29971
Villa Latina FR 19 1241 31212
Sora FR 19 26144 57356
Casalvieri FR 19 2698 60054
Villavallelonga AQ 19 919 60973
Casalattico FR 20 574 61547

Municipalities with at least 50000 inhabitants

An earthquake occurred to
69 Km SW of Chieti (51815 inhabitants)
73 Km SE of L'Aquila (69753 inhabitants)
82 Km SW of Pescara (121014 inhabitants)
84 Km E of Latina (125985 inhabitants)
86 Km SW of Montesilvano (53738 inhabitants)
88 Km E of Tivoli (56533 inhabitants)
88 Km E of Velletri (53303 inhabitants)
89 Km NW of Caserta (76326 inhabitants)
94 Km E of Guidonia Montecelio (88673 inhabitants)
95 Km NW of Aversa (53047 inhabitants)
98 Km S of Teramo (54892 inhabitants)
100 Km NW of Giugliano in Campania (122974 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 2019-10-18
12:53:42
41.78 13.83 9 2019-10-18
13:05:54
Sala Sismica INGV-Roma 73323371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-18 12:53:42 ± 0.07
Latitude 41.78 ± 0.00
Longitude 13.83 ± 0.00
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73323371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 548
Semi-minor axis of confidence ellipse (meter) 150
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 189
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
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) 0.0063
Epicentral distance of station farthest from the epicenter (degree) 0.48384
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 7
Type of magnitude ML
Reference to an origin 73323371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-18 13:05:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIUL.HHE. 2019-10-18T12:54:00.20 0.3 undecidable manual S 243 0.4838 50 0.38 66
IV.LPEL.HHE. 2019-10-18T12:53:56.44 1.0 undecidable manual S 45 0.3732 50 -0.11 24
IV.MIDA.HHE. 2019-10-18T12:53:55.71 1.0 undecidable manual S 114 0.3471 50 -0.05 24
IV.RNI2.HHE. 2019-10-18T12:53:53.14 1.0 undecidable manual S 108 0.2536 108 0.18 24
IV.GIUL.HHE. 2019-10-18T12:53:52.45 0.3 undecidable manual P 243 0.4838 50 -0.12 70
IV.LRP.EHN. 2019-10-18T12:53:51.78 0.3 undecidable manual S 233 0.2257 111 -0.15 73
IV.CERA.HNZ. 2019-10-18T12:53:51.92 0.3 undecidable manual S 142 0.232 110 -0.25 71
IV.MIDA.HHE. 2019-10-18T12:53:50.05 0.1 undecidable manual P 114 0.3471 50 -0.17 95
IV.LPEL.HHE. 2019-10-18T12:53:50.65 1.0 undecidable manual P 45 0.3732 50 -0.03 24
IV.RNI2.HHE. 2019-10-18T12:53:49.00 0.1 undecidable manual P 108 0.2536 108 0.4 92
IV.VVLD.HHZ. 2019-10-18T12:53:49.95 0.3 undecidable manual S 300 0.1763 116 -0.24 72
IV.POFI.HHZ. 2019-10-18T12:53:48.04 0.3 undecidable manual S 233 0.1088 128 0.09 76
IV.LRP.EHN. 2019-10-18T12:53:47.89 0.1 undecidable manual P 233 0.2257 111 -0.12 98
IV.CERA.HNZ. 2019-10-18T12:53:47.93 0.1 undecidable manual P 142 0.232 110 -0.22 96
IV.VVLD.HHZ. 2019-10-18T12:53:46.94 0.1 positive manual P 300 0.1763 116 -0.06 100
IT.OPI.HGZ. 2019-10-18T12:53:45.86 0.3 undecidable manual S 171 0.0063 176 -0.06 78
IV.POFI.HHZ. 2019-10-18T12:53:45.95 0.1 positive manual P 233 0.1088 128 0.24 98
IT.OPI.HGZ. 2019-10-18T12:53:44.78 0.1 negative manual P 171 0.0063 176 0.24 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHE. ML:1.1 0.0001375 0.16 AML other m 2019-10-18T12:53:48.27
IV.POFI.HHN. ML:0.7 6.005E-5 0.32 AML other m 2019-10-18T12:53:48.43
IV.VVLD.HHN. ML:0.9 5.325E-5 0.26 AML other m 2019-10-18T12:53:50.44
IV.VVLD.HHE. ML:0.7 3.985E-5 0.4 AML other m 2019-10-18T12:53:50.67
IV.POFI.HNE. ML:1.1 0.00015527135 0.16 AML other m 2019-10-18T12:53:48.28
IV.POFI.HNN. ML:0.7 5.82700445E-5 0.096 AML other m 2019-10-18T12:53:48.32
IV.VVLD.HNN. ML:0.8 4.77015865E-5 0.2112 AML other m 2019-10-18T12:53:50.32
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