Earthquake with magnitude of ML 0.5 on date 14-09-2020 and time 03:33:28 (Italy) in region 5 km S Villalago (AQ)

A magnitude ML 0.5 earthquake occured in region: 5 km S Villalago (AQ), on

  • 14-09-2020 01:33:28 (UTC)
  • 14-09-2020 03:33:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.9, 13.82 at 18 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
Villalago AQ 5 568 568
Scanno AQ 5 1847 2415
Bisegna AQ 6 223 2638
Pescasseroli AQ 10 2203 4841
Anversa degli Abruzzi AQ 11 341 5182
Lecce nei Marsi AQ 12 1702 6884
Gioia dei Marsi AQ 12 1989 8873
Opi AQ 13 420 9293
Ortona dei Marsi AQ 14 542 9835
Rocca Pia AQ 14 178 10013
Introdacqua AQ 14 2126 12139
Bugnara AQ 15 1125 13264
Pettorano sul Gizio AQ 15 1376 14640
Cocullo AQ 16 230 14870
Villetta Barrea AQ 16 653 15523
Ortucchio AQ 16 1860 17383
Villavallelonga AQ 16 919 18302
Civitella Alfedena AQ 18 296 18598
Prezza AQ 18 945 19543
Sulmona AQ 19 24557 44100
Collelongo AQ 20 1233 45333
Pescina AQ 20 4133 49466

Municipalities with at least 50000 inhabitants

An earthquake occurred to
58 Km SW of Chieti (51815 inhabitants)
62 Km SE of L'Aquila (69753 inhabitants)
71 Km SW of Pescara (121014 inhabitants)
74 Km SW of Montesilvano (53738 inhabitants)
85 Km E of Tivoli (56533 inhabitants)
86 Km S of Teramo (54892 inhabitants)
89 Km E of Velletri (53303 inhabitants)
90 Km NE of Latina (125985 inhabitants)
91 Km E of Guidonia Montecelio (88673 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
Reviewed
Rev100
ML 0.5 2020-09-14
01:33:28
41.9 13.82 19 2020-09-14
01:39:29
Sala Sismica INGV-Roma 82888391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-14 01:33:28 ± 0.24
Latitude 41.90 ± 0.01
Longitude 13.82 ± 0.02
Depth (km) 19 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82888391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1168
Semi-minor axis of confidence ellipse (meter) 750
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 109
Circular confidence region, given by single value of horizontal uncertainty (meter) 1170
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 148
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.20505
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 82888391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-14 01:39:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2020-09-14T01:34:34.04 3.0 undecidable manual Sg 0.02 0
IV.CMPR.HHZ. 2020-09-14T01:34:27.04 3.0 undecidable manual Sg 3.27 0
IV.PTRJ.HNZ. 2020-09-14T01:33:54.08 3.0 undecidable manual Sg -0.09 0
IV.ROSPO.HHZ. 2020-09-14T01:33:40.06 3.0 positive manual P -5.14 0
IV.TERO.HHZ. 2020-09-14T01:33:38.64 3.0 undecidable manual Pg -4.66 0
IT.SULP.HGZ. 2020-09-14T01:33:38.25 0.6 undecidable manual S 23 0.205 120 0.85 39
IV.POFI.HHZ. 2020-09-14T01:33:37.34 0.6 undecidable manual S 204 0.1952 121 0.18 48
IV.VVLD.HHZ. 2020-09-14T01:33:36.14 0.3 undecidable manual S 260 0.1484 131 0.1 74
IT.OPI.HGZ. 2020-09-14T01:33:35.29 0.3 undecidable manual S 176 0.1196 138 -0.13 74
IV.INTR.HHZ. 2020-09-14T01:33:35.45 0.3 undecidable manual S 28 0.1313 135 -0.21 72
IV.POFI.HHZ. 2020-09-14T01:33:33.35 0.1 undecidable manual P 204 0.1952 121 -0.06 98
IT.SULP.HGZ. 2020-09-14T01:33:33.41 0.3 undecidable manual P 23 0.205 120 -0.14 72
IV.VVLD.HHZ. 2020-09-14T01:33:32.79 0.1 positive manual P 260 0.1484 131 0.03 100
IT.OPI.HGZ. 2020-09-14T01:33:32.36 0.1 undecidable manual P 176 0.1196 138 -0.05 100
IV.INTR.HHZ. 2020-09-14T01:33:32.45 0.1 negative manual P 28 0.1313 135 -0.1 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.INTR.HHE. ML:0.6 2.5722515E-5 0.08 AML other m 2020-09-14T01:33:35.69
IV.INTR.HHN. ML:0.7 3.642578E-5 0.1 AML other m 2020-09-14T01:33:35.75
IV.VVLD.HHE. ML:0.4 1.7207285E-5 0.16 AML other m 2020-09-14T01:33:38.08
IV.VVLD.HHN. ML:0.5 1.9435419E-5 0.16 AML other m 2020-09-14T01:33:36.65
IV.POFI.HHE. ML:0 7.355698E-6 0.32 AML other m 2020-09-14T01:33:37.83
IV.POFI.HHN. ML:0 4.555633E-6 0.2 AML other m 2020-09-14T01:33:37.52
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download