Earthquake with magnitude of ML 0.4 on date 15-07-2020 and time 20:13:51 (UTC) in region 2 km W Alvito (FR)

A magnitude ML 0.4 earthquake occured in region: 2 km W Alvito (FR), on

  • 15-07-2020 20:13:51 (UTC)
  • 15-07-2020 22:13:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.69, 13.73 at 5 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
Alvito FR 2 2713 2713
Posta Fibreno FR 2 1139 3852
Vicalvi FR 2 783 4635
Fontechiari FR 5 1303 5938
Campoli Appennino FR 6 1725 7663
Casalvieri FR 7 2698 10361
Gallinaro FR 7 1269 11630
Broccostella FR 8 2741 14371
San Donato Val di Comino FR 8 2107 16478
Casalattico FR 8 574 17052
Pescosolido FR 9 1555 18607
Sora FR 10 26144 44751
Atina FR 10 4316 49067
Settefrati FR 11 728 49795
Arpino FR 11 7262 57057
Isola del Liri FR 13 11715 68772
Santopadre FR 13 1357 70129
Villa Latina FR 13 1241 71370
Picinisco FR 13 1218 72588
Opi AQ 13 420 73008
Pescasseroli AQ 14 2203 75211
Castelliri FR 15 3454 78665
Belmonte Castello FR 15 739 79404
Colle San Magno FR 16 699 80103
Terelle FR 16 422 80525
Roccasecca FR 16 7365 87890
Rocca d'Arce FR 17 959 88849
Fontana Liri FR 17 2953 91802
Arce FR 17 5756 97558
Castrocielo FR 18 3965 101523
Balsorano AQ 18 3569 105092
Colfelice FR 18 1932 107024
Monte San Giovanni Campano FR 18 12929 119953
San Biagio Saracinisco FR 19 349 120302
Villetta Barrea AQ 19 653 120955
Civitella Alfedena AQ 20 296 121251

Municipalities with at least 50000 inhabitants

An earthquake occurred to
73 Km E of Latina (125985 inhabitants)
78 Km SE of L'Aquila (69753 inhabitants)
79 Km E of Velletri (53303 inhabitants)
82 Km SW of Chieti (51815 inhabitants)
82 Km E of Tivoli (56533 inhabitants)
85 Km NW of Caserta (76326 inhabitants)
90 Km E of Guidonia Montecelio (88673 inhabitants)
90 Km NW of Aversa (53047 inhabitants)
90 Km E of Aprilia (73446 inhabitants)
94 Km NW of Giugliano in Campania (122974 inhabitants)
95 Km SW of Pescara (121014 inhabitants)
95 Km E of Anzio (54211 inhabitants)
97 Km NW of Marano di Napoli (59874 inhabitants)
98 Km SW of Montesilvano (53738 inhabitants)
99 Km NW of Afragola (65057 inhabitants)
99 Km NW of Pozzuoli (81661 inhabitants)
99 Km NW of Acerra (59573 inhabitants)
100 Km NW of Casoria (77642 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
Reviewed
Rev100
ML 0.4 2020-07-15
20:13:51
41.69 13.73 5 2020-07-15
20:20:40
Sala Sismica INGV-Roma 81060421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-15 20:13:51 ± 0.17
Latitude 41.69 ± 0.01
Longitude 13.73 ± 0.01
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81060421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 663
Semi-minor axis of confidence ellipse (meter) 281
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 155
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) 132
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.23832
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 81060421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-15 20:20:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.AGLI.HHZ. 2020-07-15T20:15:35.05 3.0 undecidable manual Sn 4.07 0
IV.NDIM.HHZ. 2020-07-15T20:15:32.16 3.0 undecidable manual Sn -9.04 0
MN.CLTB.HHZ. 2020-07-15T20:15:27.01 3.0 undecidable manual Sn 0.34 0
IV.MPNC.HHZ. 2020-07-15T20:15:21.15 3.0 undecidable manual Sg 9.96 0
IV.CRTC.HHZ. 2020-07-15T20:15:00.74 3.0 undecidable manual Sg 1.37 0
IV.MURB.HHZ. 2020-07-15T20:14:54.77 3.0 undecidable manual Sg 2.51 0
IV.IST3.HHZ. 2020-07-15T20:14:53.03 3.0 undecidable manual Sn -2.08 0
GU.POPM.HHZ. 2020-07-15T20:14:51.62 3.0 negative manual Pg 11.67 0
IV.ORI.HHZ. 2020-07-15T20:14:38.06 3.0 undecidable manual Sn -1.73 0
IV.APEC.HHZ. 2020-07-15T20:14:29.81 3.0 positive manual Pg 5.8 0
IV.USI.HHZ. 2020-07-15T20:14:27.38 3.0 undecidable manual Pn 2.57 0
IV.CPGN.EHZ. 2020-07-15T20:14:25.68 3.0 undecidable manual Pn -1.63 0
IV.VVLD.HHZ. 2020-07-15T20:13:58.88 0.3 undecidable manual S 337 0.1916 104 -0.05 76
IT.OPI.HGE. 2020-07-15T20:13:56.41 0.3 undecidable manual S 43 0.1133 113 0.33 72
IV.CERA.HHZ. 2020-07-15T20:13:56.49 0.1 undecidable manual P 114 0.2383 102 -0.25 96
IV.LRP.EHZ. 2020-07-15T20:13:56.27 0.3 undecidable manual S 246 0.1142 113 0.18 75
IV.VVLD.HHZ. 2020-07-15T20:13:55.46 0.3 positive manual P 337 0.1916 104 -0.25 72
IV.LRP.EHZ. 2020-07-15T20:13:54.32 0.6 undecidable manual P 246 0.1142 113 0.24 49
IT.OPI.HGE. 2020-07-15T20:13:54.22 0.1 undecidable manual P 43 0.1133 113 0.16 100
IV.POFI.HHZ. 2020-07-15T20:13:53.26 0.3 undecidable manual S 337 0.0252 152 -0.18 76
IV.CAFE.HHZ. 2020-07-15T20:13:53.09 3.0 undecidable manual P 0.58 0
IV.POFI.HHZ. 2020-07-15T20:13:52.50 0.3 undecidable manual P 337 0.0252 152 -0.05 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHN. ML:0 0.000225 0.28 AML other m 2020-07-15T20:13:53.68
IV.POFI.HHE. ML:0 0.000216 1.04 AML other m 2020-07-15T20:13:53.85
IV.LRP.EHE. ML:0.5 3.915E-5 0.48 AML other m 2020-07-15T20:13:56.46
IV.VVLD.HHE. ML:0.6 3.07E-5 0.3 AML other m 2020-07-15T20:13:59.01
IV.LRP.EHN. ML:0.1 1.595E-5 0.6 AML other m 2020-07-15T20:13:59.17
IV.VVLD.HHN. ML:0.5 2.495E-5 0.56 AML other m 2020-07-15T20:14:00.37
IV.APEC.HHN. ML:2.8 0.0001265 0.06 AML other m 2020-07-15T20:14:32.81
IV.APEC.HHE. ML:2.7 0.0001165 0.06 AML other m 2020-07-15T20:14:36.37
IV.ORI.HHN. ML:3.1 0.00016 0.24 AML other m 2020-07-15T20:14:52.73
IV.ORI.HHE. ML:3.2 0.000207 0.06 AML other m 2020-07-15T20:14:52.76
IV.IST3.HHN. ML:4.1 0.00121 0.8 AML other m 2020-07-15T20:14:58.44
IV.IST3.HHE. ML:4.1 0.0010265 0.42 AML other m 2020-07-15T20:14:58.72
MN.CLTB.HHN. ML:3.7 0.0001955 1.06 AML other m 2020-07-15T20:15:34.43
MN.CLTB.HHE. ML:3.7 0.000176 0.8 AML other m 2020-07-15T20:15:36.55
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