Earthquake with magnitude of ML 0.8 on date 19-09-2019 and time 12:33:30 (Italy) in region 5 km SE Villavallelonga (AQ)

A magnitude ML 0.8 earthquake occured in region: 5 km SE Villavallelonga (AQ), on

  • 19-09-2019 10:33:30 (UTC)
  • 19-09-2019 12:33:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.82, 13.66 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
Villavallelonga AQ 5 919 919
Balsorano AQ 8 3569 4488
Pescosolido FR 8 1555 6043
Collelongo AQ 9 1233 7276
Campoli Appennino FR 10 1725 9001
San Vincenzo Valle Roveto AQ 11 2347 11348
Pescasseroli AQ 11 2203 13551
Sora FR 12 26144 39695
Lecce nei Marsi AQ 12 1702 41397
Broccostella FR 14 2741 44138
Bisegna AQ 14 223 44361
Ortucchio AQ 15 1860 46221
Gioia dei Marsi AQ 15 1989 48210
Posta Fibreno FR 15 1139 49349
Opi AQ 15 420 49769
Civita d'Antino AQ 17 979 50748
Alvito FR 17 2713 53461
Morino AQ 17 1448 54909
Vicalvi FR 17 783 55692
Fontechiari FR 17 1303 56995
Isola del Liri FR 18 11715 68710
Trasacco AQ 18 6246 74956
Castelliri FR 18 3454 78410
San Donato Val di Comino FR 18 2107 80517
Villalago AQ 19 568 81085
Arpino FR 20 7262 88347

Municipalities with at least 50000 inhabitants

An earthquake occurred to
62 Km SE of L'Aquila (69753 inhabitants)
72 Km SW of Chieti (51815 inhabitants)
73 Km E of Tivoli (56533 inhabitants)
74 Km NE of Latina (125985 inhabitants)
74 Km E of Velletri (53303 inhabitants)
79 Km E of Guidonia Montecelio (88673 inhabitants)
85 Km SW of Pescara (121014 inhabitants)
87 Km SW of Montesilvano (53738 inhabitants)
87 Km E of Aprilia (73446 inhabitants)
93 Km S of Teramo (54892 inhabitants)
95 Km E of Anzio (54211 inhabitants)
97 Km E of Pomezia (62966 inhabitants)
97 Km E of Roma (2864731 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 0.8 2019-09-19
10:33:30
41.83 13.66 11 2019-09-19
10:52:40
Sala Sismica INGV-Roma 72555831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-19 10:33:30 ± 0.07
Latitude 41.83 ± 0.00
Longitude 13.66 ± 0.01
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72555831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 660
Semi-minor axis of confidence ellipse (meter) 270
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 300
Circular confidence region, given by single value of horizontal uncertainty (meter) 660
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41369
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 72555831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-19 10:52:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VCEL.EHZ. 2019-09-19T10:33:42.27 3.0 positive manual P 0.26 0
IV.INTR.HHZ. 2019-09-19T10:33:40.27 0.6 undecidable manual S 45 0.2626 90 0.02 49
IV.T0110.HHZ. 2019-09-19T10:33:38.79 0.6 undecidable manual P 12 0.4137 90 0.28 45
IV.LRP.EHZ. 2019-09-19T10:33:37.75 0.6 undecidable manual S 196 0.1853 90 -0.21 48
IT.OPI.HGE. 2019-09-19T10:33:36.53 0.6 undecidable manual S 111 0.1385 90 -0.05 49
IV.INTR.HHZ. 2019-09-19T10:33:35.84 0.1 undecidable manual P 45 0.2626 90 -0.08 96
IV.POFI.HHZ. 2019-09-19T10:33:35.92 0.3 undecidable manual S 159 0.1151 101 0.03 76
IV.LRP.EHZ. 2019-09-19T10:33:34.46 0.1 undecidable manual P 196 0.1853 90 -0.14 97
IV.VVLD.HHZ. 2019-09-19T10:33:34.01 0.6 undecidable manual S 331 0.0513 144 -0.32 48
IV.POFI.HHZ. 2019-09-19T10:33:33.57 0.1 undecidable manual P 159 0.1151 101 0.16 98
IT.OPI.HGE. 2019-09-19T10:33:33.85 0.1 undecidable manual P 111 0.1385 90 0.05 100
IV.VVLD.HHZ. 2019-09-19T10:33:32.63 0.1 undecidable manual P 331 0.0513 144 0.12 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHE. ML:1 0.0001645 0.48 AML other m 2019-09-19T10:33:34.13
IV.VVLD.HHN. ML:1.1 0.0002045 0.48 AML other m 2019-09-19T10:33:34.24
IV.POFI.HHE. ML:0.8 6.55E-5 0.48 AML other m 2019-09-19T10:33:36.22
IV.POFI.HHN. ML:0.6 4.175E-5 1.5 AML other m 2019-09-19T10:33:36.95
IV.LRP.EHE. ML:0.8 3.82E-5 1.52 AML other m 2019-09-19T10:33:38.03
IV.LRP.EHN. ML:0.7 3.435E-5 0.88 AML other m 2019-09-19T10:33:41.47
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