Earthquake with magnitude of ML 0.6 on date 24-02-2020 and time 04:20:34 (UTC) in region 7 km S Civitella Alfedena (AQ)

A magnitude ML 0.6 earthquake occured in region: 7 km S Civitella Alfedena (AQ), on

  • 24-02-2020 04:20:34 (UTC)
  • 24-02-2020 05:20:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7, 13.94 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
Civitella Alfedena AQ 7 296 296
Settefrati FR 8 728 1024
Barrea AQ 8 726 1750
Picinisco FR 8 1218 2968
Villetta Barrea AQ 9 653 3621
Alfedena AQ 9 864 4485
Pizzone IS 9 329 4814
San Biagio Saracinisco FR 10 349 5163
Scontrone AQ 10 574 5737
San Donato Val di Comino FR 10 2107 7844
Montenero Val Cocchiara IS 11 538 8382
Castel San Vincenzo IS 12 516 8898
Gallinaro FR 12 1269 10167
Opi AQ 12 420 10587
Villa Latina FR 13 1241 11828
Scapoli IS 14 680 12508
Atina FR 14 4316 16824
Cerro al Volturno IS 15 1281 18105
Rocchetta a Volturno IS 15 1113 19218
Alvito FR 16 2713 21931
Vallerotonda FR 17 1581 23512
Rionero Sannitico IS 17 1118 24630
Belmonte Castello FR 17 739 25369
Pescasseroli AQ 17 2203 27572
Castel di Sangro AQ 17 6538 34110
Acquafondata FR 18 263 34373
Colli a Volturno IS 18 1349 35722
Acquaviva d'Isernia IS 18 425 36147
Sant'Elia Fiumerapido FR 19 6166 42313
Vicalvi FR 19 783 43096
Casalattico FR 20 574 43670
Viticuso FR 20 353 44023
Posta Fibreno FR 20 1139 45162
Filignano IS 20 648 45810
Fornelli IS 20 1909 47719
Casalvieri FR 20 2698 50417

Municipalities with at least 50000 inhabitants

An earthquake occurred to
75 Km S of Chieti (51815 inhabitants)
77 Km NW of Caserta (76326 inhabitants)
84 Km N of Aversa (53047 inhabitants)
85 Km SE of L'Aquila (69753 inhabitants)
88 Km S of Pescara (121014 inhabitants)
89 Km N of Giugliano in Campania (122974 inhabitants)
90 Km E of Latina (125985 inhabitants)
91 Km NW of Acerra (59573 inhabitants)
92 Km N of Marano di Napoli (59874 inhabitants)
92 Km NW of Afragola (65057 inhabitants)
92 Km S of Montesilvano (53738 inhabitants)
93 Km NW of Casoria (77642 inhabitants)
95 Km NW of Benevento (60091 inhabitants)
96 Km N of Pozzuoli (81661 inhabitants)
96 Km E of Velletri (53303 inhabitants)
99 Km E of Tivoli (56533 inhabitants)
99 Km N of Napoli (974074 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 0.6 2020-02-24
04:20:34
41.7 13.94 11 2020-02-24
04:29:30
Sala Sismica INGV-Roma 76766981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-24 04:20:34 ± 0.09
Latitude 41.70 ± 0.01
Longitude 13.94 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76766981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 864
Semi-minor axis of confidence ellipse (meter) 268
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 201
Circular confidence region, given by single value of horizontal uncertainty (meter) 860
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.31117
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 76766981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-24 04:29:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ROM9.HNZ. 2020-02-24T04:21:06.09 3.0 undecidable manual Sn 0.15 0
IV.PAOL.HHZ. 2020-02-24T04:20:58.03 3.0 undecidable manual S -0.21 0
IV.LAV9.HNZ. 2020-02-24T04:20:50.18 3.0 positive manual P 1.01 0
IV.INTR.HHZ. 2020-02-24T04:20:46.61 0.3 undecidable manual S 356 0.3112 50 0.41 67
IV.VVLD.HHZ. 2020-02-24T04:20:45.27 0.3 undecidable manual S 306 0.2878 50 -0.24 69
IV.LRP.EHZ. 2020-02-24T04:20:45.36 0.3 undecidable manual S 258 0.2662 50 0.49 66
IV.MIDA.HHZ. 2020-02-24T04:20:43.88 0.3 undecidable manual S 104 0.2446 50 -0.34 69
IV.POFI.HHZ. 2020-02-24T04:20:42.23 0.3 undecidable manual S 276 0.1682 120 0.28 70
IV.RNI2.HHZ. 2020-02-24T04:20:42.37 0.6 undecidable manual S 89 0.161 121 0.65 42
IV.INTR.HHZ. 2020-02-24T04:20:41.50 0.3 undecidable manual P 356 0.3112 50 0.26 69
IV.LRP.EHZ. 2020-02-24T04:20:40.56 0.3 undecidable manual P 258 0.2662 50 0.08 72
IV.CERA.HHZ. 2020-02-24T04:20:40.32 0.3 undecidable manual S 149 0.1196 129 -0.09 74
IV.VVLD.HHZ. 2020-02-24T04:20:40.48 0.1 undecidable manual P 306 0.2878 50 -0.36 90
IT.OPI.HGZ. 2020-02-24T04:20:39.62 0.3 undecidable manual S 314 0.1097 132 -0.49 68
IV.MIDA.HHZ. 2020-02-24T04:20:39.81 0.1 undecidable manual P 104 0.2446 50 -0.29 92
IV.POFI.HHZ. 2020-02-24T04:20:38.78 0.1 undecidable manual P 276 0.1682 120 -0.01 99
IV.RNI2.HHZ. 2020-02-24T04:20:38.86 0.1 undecidable manual P 89 0.161 121 0.2 96
IT.OPI.HGZ. 2020-02-24T04:20:37.57 0.3 undecidable manual P 314 0.1097 132 -0.15 73
IV.CERA.HHZ. 2020-02-24T04:20:37.92 0.1 undecidable manual P 149 0.1196 129 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERA.HHE. ML:0.4 2.6030475E-5 0.1984 AML other m 2020-02-24T04:20:41.75
IV.CERA.HHN. ML:0.6 4.1729805E-5 0.5216 AML other m 2020-02-24T04:20:42.49
IV.CERA.HNE. ML:0.4 2.527999E-5 0.8576 AML other m 2020-02-24T04:20:41.76
IV.CERA.HNN. ML:0.6 4.1653095E-5 0.5216 AML other m 2020-02-24T04:20:42.50
IV.POFI.HHE. ML:0.3 1.2922797E-5 0.24 AML other m 2020-02-24T04:20:43.48
IV.POFI.HHN. ML:0.3 1.4143755E-5 0.3392 AML other m 2020-02-24T04:20:42.98
IV.RNI2.HHE. ML:0.8 5.6716085E-5 0.16 AML other m 2020-02-24T04:20:43.36
IV.RNI2.HHN. ML:0.8 5.154261E-5 0.4192 AML other m 2020-02-24T04:20:44.16
IV.RNI2.HNE. ML:0.9 6.3990735E-5 0.1984 AML other m 2020-02-24T04:20:43.36
IV.RNI2.HNN. ML:0.9 5.8478565E-5 0.5216 AML other m 2020-02-24T04:20:44.89
IV.MIDA.HHE. ML:0.4 1.34471545E-5 0.3424 AML other m 2020-02-24T04:20:45.55
IV.MIDA.HHN. ML:0.4 1.45931325E-5 0.3776 AML other m 2020-02-24T04:20:45.58
IV.VVLD.HHE. ML:0.5 1.42548865E-5 0.2176 AML other m 2020-02-24T04:20:46.73
IV.VVLD.HHN. ML:0.8 2.496029E-5 0.2592 AML other m 2020-02-24T04:20:45.83
IV.INTR.HHE. ML:0.7 2.040506645E-5 0.32 AML other m 2020-02-24T04:20:48.93
IV.INTR.HHN. ML:0.4 1.230352E-5 0.0992 AML other m 2020-02-24T04:20:46.89
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