Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 17-04-2024 and time 11:09:28 (UTC) in region 1 km SE Alfedena (AQ)

A magnitude ML 1.4 earthquake occured in region: 1 km SE Alfedena (AQ), on

  • 17-04-2024 11:09:28 (UTC)
  • 17-04-2024 13:09:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7260, 14.0460 at 22 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Alfedena AQ 1 864 864
Montenero Val Cocchiara IS 2 538 1402
Scontrone AQ 3 574 1976
Barrea AQ 6 726 2702
Pizzone IS 7 329 3031
Castel San Vincenzo IS 8 516 3547
Rionero Sannitico IS 8 1118 4665
Castel di Sangro AQ 9 6538 11203
Cerro al Volturno IS 9 1281 12484
Civitella Alfedena AQ 10 296 12780
Acquaviva d'Isernia IS 10 425 13205
Villetta Barrea AQ 11 653 13858
Forlì del Sannio IS 12 675 14533
Rocchetta a Volturno IS 12 1113 15646
Scapoli IS 12 680 16326
San Pietro Avellana IS 14 503 16829
Roccaraso AQ 14 1627 18456
Colli a Volturno IS 15 1349 19805
Fornelli IS 15 1909 21714
Roccasicura IS 16 550 22264
San Biagio Saracinisco FR 16 349 22613
Rivisondoli AQ 16 700 23313
Picinisco FR 17 1218 24531
Settefrati FR 17 728 25259
Pescocostanzo AQ 19 1128 26387
Montaquila IS 19 2456 28843
Vastogirardi IS 19 704 29547
Miranda IS 19 1047 30594
Opi AQ 19 420 31014
Ateleta AQ 19 1181 32195
San Donato Val di Comino FR 19 2107 34302
Filignano IS 20 648 34950

Municipalities with at least 50000 inhabitants

An earthquake occurred to
70 Km S of Chieti (51815 inhabitants)
76 Km NW of Caserta (76326 inhabitants)
83 Km S of Pescara (121014 inhabitants)
85 Km N of Aversa (53047 inhabitants)
88 Km SE of L'Aquila (69753 inhabitants)
88 Km S of Montesilvano (53738 inhabitants)
90 Km N of Giugliano in Campania (122974 inhabitants)
90 Km NW of Benevento (60091 inhabitants)
91 Km NW of Acerra (59573 inhabitants)
92 Km N of Afragola (65057 inhabitants)
93 Km N of Marano di Napoli (59874 inhabitants)
93 Km N of Casoria (77642 inhabitants)
98 Km N of Pozzuoli (81661 inhabitants)
99 Km E of Latina (125985 inhabitants)
100 Km N of Napoli (974074 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.4 2024-04-17
11:09:28		 41.7257 14.0465 22 2024-04-17
11:14:05		 Sala Sismica INGV-Roma 126827581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-17 11:09:28 ± 0.38
Latitude 41.7257 ± 0.0126
Longitude 14.0465 ± 0.0157
Depth (km) 22 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126827581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1440
Semi-minor axis of confidence ellipse (meter) 639
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 216
Circular confidence region, given by single value of horizontal uncertainty (meter) 1440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.08184
Epicentral distance of station farthest from the epicenter (degree) 0.35253
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 126827581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-17 11:14:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VVLD.HNN. 2024-04-17T11:09:41.96 0.6 undecidable manual S 295 38.4282 111 0.26 48
IV.INTR.HHZ. 2024-04-17T11:09:40.54 0.6 undecidable manual S 340 33.8439 115 -0.01 51
IV.POFI.HHZ. 2024-04-17T11:09:39.53 0.6 undecidable manual S 268 27.75 120 0.43 47
IT.OPI.HGE. 2024-04-17T11:09:37.11 0.3 undecidable manual S 287 18.7701 133 -0.08 78
IV.CERA.HHZ. 2024-04-17T11:09:36.48 0.6 undecidable manual S 189 14.3745 142 0.09 52
IV.INTR.HHZ. 2024-04-17T11:09:35.55 0.3 negative manual P 340 33.8439 115 0.12 75
IV.VVLD.HNN. 2024-04-17T11:09:35.44 0.1 undecidable manual P 295 38.4282 111 -0.65 86
IV.RNI2.HHZ. 2024-04-17T11:09:35.16 0.6 undecidable manual S 106 9.0798 154 -0.48 48
IV.LRP.EHZ. 2024-04-17T11:09:35.63 0.1 undecidable manual P 257 39.1275 111 -0.55 89
IV.POFI.HHZ. 2024-04-17T11:09:34.92 0.1 undecidable manual P 268 27.75 120 0.33 96
IV.CERA.HHZ. 2024-04-17T11:09:33.27 0.6 undecidable manual P 189 14.3745 142 0.25 50
IT.OPI.HGE. 2024-04-17T11:09:33.70 0.1 undecidable manual P 287 18.7701 133 0.22 100
IV.RNI2.HHZ. 2024-04-17T11:09:33.12 0.6 positive manual P 106 9.0798 154 0.53 47
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RNI2.HHE. ML:1.4 0.0001805 1.32 AML other m 2024-04-17T11:09:36.19
IV.RNI2.HHN. ML:1.4 0.0001565 0.78 AML other m 2024-04-17T11:09:37.60
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