Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 26-03-2023 and time 23:50:54 (UTC) in region 4 km S Vastogirardi (IS)

A magnitude ML 1.6 earthquake occured in region: 4 km S Vastogirardi (IS), on

  • 26-03-2023 23:50:54 (UTC)
  • 27-03-2023 01:50:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7440, 14.2560 at 24 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Vastogirardi IS 4 704 704
Carovilli IS 5 1359 2063
Roccasicura IS 5 550 2613
San Pietro Avellana IS 8 503 3116
Forlì del Sannio IS 8 675 3791
Pescolanciano IS 10 855 4646
Rionero Sannitico IS 10 1118 5764
Capracotta IS 10 903 6667
Miranda IS 11 1047 7714
Pietrabbondante IS 11 759 8473
Agnone IS 12 5139 13612
Acquaviva d'Isernia IS 12 425 14037
Castelverrino IS 12 115 14152
Castel del Giudice IS 13 346 14498
Castel di Sangro AQ 13 6538 21036
Chiauci IS 13 233 21269
Sessano del Molise IS 13 727 21996
Ateleta AQ 13 1181 23177
Poggio Sannita IS 14 702 23879
Pesche IS 15 1661 25540
Civitanova del Sannio IS 15 945 26485
Pescopennataro IS 15 285 26770
Sant'Angelo del Pesco IS 16 364 27134
Montenero Val Cocchiara IS 16 538 27672
Cerro al Volturno IS 16 1281 28953
Belmonte del Sannio IS 17 768 29721
Isernia IS 17 21842 51563
Bagnoli del Trigno IS 17 735 52298
Carpinone IS 18 1157 53455
Scontrone AQ 18 574 54029
Fornelli IS 18 1909 55938
Alfedena AQ 18 864 56802
Gamberale CH 19 320 57122
Roccaraso AQ 19 1627 58749
Castel San Vincenzo IS 19 516 59265
Pettoranello del Molise IS 19 460 59725
Rosello CH 19 237 59962
Rocchetta a Volturno IS 19 1113 61075
Duronia CB 19 405 61480
Pizzoferrato CH 20 1130 62610

Municipalities with at least 50000 inhabitants

An earthquake occurred to
68 Km S of Chieti (51815 inhabitants)
75 Km N of Caserta (76326 inhabitants)
80 Km S of Pescara (121014 inhabitants)
81 Km NW of Benevento (60091 inhabitants)
86 Km N of Aversa (53047 inhabitants)
86 Km S of Montesilvano (53738 inhabitants)
89 Km N of Acerra (59573 inhabitants)
91 Km N of Giugliano in Campania (122974 inhabitants)
91 Km N of Afragola (65057 inhabitants)
93 Km N of Casoria (77642 inhabitants)
94 Km W of San Severo (53905 inhabitants)
94 Km N of Marano di Napoli (59874 inhabitants)
98 Km SE of L'Aquila (69753 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
Bulletin
Rev1000 		ML 1.6 2023-03-26
23:50:54		 41.7438 14.2558 24 2024-03-01
17:18:03		 Bollettino Sismico Italiano INGV 116402981
Reviewed
Rev100 		ML 1.6 2023-03-26
23:50:55		 41.7398 14.2315 11 2023-03-27
00:00:54		 Sala Sismica INGV-Roma 115770171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-26 23:50:54 ± 0.12
Latitude 41.7438 ± 0.0045
Longitude 14.2558 ± 0.0048
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116402981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 500
Semi-minor axis of confidence ellipse (meter) 64
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 10
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.09803
Epicentral distance of station farthest from the epicenter (degree) 0.52071
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 115770171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-27 00:00:54

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 116402981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-27 16:52:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LRP.EHZ. 2023-03-26T23:51:13.08 0.6 undecidable manual S 259 56.499 106 0.2 47
IV.CIGN.HHN. 2023-03-26T23:51:12.56 0.6 undecidable manual S 100 54.7008 106 0.14 48
IV.VVLD.HHZ. 2023-03-26T23:51:12.00 0.3 undecidable manual S 285 54.1014 106 -0.28 70
IT.PLTA.HNN. 2023-03-26T23:51:11.06 0.6 undecidable manual S 70 46.8198 109 0.63 42
IT.SULP.HGE. 2023-03-26T23:51:10.77 0.6 undecidable manual S 324 46.5201 110 0.42 46
IV.POFI.HHZ. 2023-03-26T23:51:10.00 0.3 undecidable manual S 266 45.1215 110 0.01 75
IT.SULA.HNZ. 2023-03-26T23:51:10.95 0.6 undecidable manual S 323 46.0206 110 0.73 41
IT.MCLF.HNE. 2023-03-26T23:51:10.79 0.6 undecidable manual S 70 51.2154 108 -0.73 41
IV.INTR.HHZ. 2023-03-26T23:51:09.23 0.6 undecidable manual S 316 41.5251 112 0.13 49
IV.SGG.HHN. 2023-03-26T23:51:09.69 0.6 undecidable manual S 165 40.9257 113 0.73 41
IV.VAGA.HHZ. 2023-03-26T23:51:08.13 0.6 undecidable manual S 183 36.4413 116 0.26 48
IT.OPI.HGE. 2023-03-26T23:51:07.27 0.6 undecidable manual S 276 35.4423 116 -0.34 47
IV.LPEL.HHZ. 2023-03-26T23:51:07.39 0.6 undecidable manual S 350 34.1436 117 0.08 50
IV.LRP.EHZ. 2023-03-26T23:51:05.20 0.1 undecidable manual P 259 56.499 106 -0.07 97
IV.CERA.HHZ. 2023-03-26T23:51:05.83 0.6 undecidable manual S 231 25.4523 126 0.48 47
IV.CIGN.HHN. 2023-03-26T23:51:05.14 0.3 undecidable manual P 100 54.7008 106 0.13 72
IT.GLNS.HNZ. 2023-03-26T23:51:05.31 0.3 undecidable manual P 71 57.7977 105 -0.17 71
IT.MCLF.HNE. 2023-03-26T23:51:04.24 0.3 undecidable manual P 70 51.2154 108 -0.25 71
IV.VVLD.HHZ. 2023-03-26T23:51:04.67 0.1 undecidable manual P 285 54.1014 106 -0.26 93
IT.SULP.HGE. 2023-03-26T23:51:04.48 0.6 undecidable manual P 324 46.5201 110 0.66 42
IV.INTR.HHZ. 2023-03-26T23:51:03.12 0.1 undecidable manual P 316 41.5251 112 0.02 100
IT.SULA.HNZ. 2023-03-26T23:51:03.88 0.3 undecidable manual P 323 46.0206 110 0.14 73
IV.MCI.EHZ. 2023-03-26T23:51:03.84 0.3 undecidable manual P 233 46.2204 110 0.07 74
IT.PLTA.HNN. 2023-03-26T23:51:03.94 0.3 undecidable manual P 70 46.8198 109 0.07 73
IV.POFI.HHZ. 2023-03-26T23:51:03.44 0.1 undecidable manual P 266 45.1215 110 -0.17 97
IV.SGG.HHN. 2023-03-26T23:51:02.96 0.3 undecidable manual P 165 40.9257 113 -0.05 75
IV.LPEL.HHZ. 2023-03-26T23:51:02.02 0.3 undecidable manual P 350 34.1436 117 -0.04 76
IV.BSSO.HHE. 2023-03-26T23:51:02.74 0.3 undecidable manual P 128 35.5422 116 0.48 69
IV.VAGA.HHZ. 2023-03-26T23:51:02.20 0.1 undecidable manual P 183 36.4413 116 -0.18 98
IV.PABO.HHZ. 2023-03-26T23:51:02.70 0.6 undecidable manual S 87 10.878 152 -0.05 52
IT.OPI.HGE. 2023-03-26T23:51:01.97 0.3 undecidable manual P 276 35.4423 116 -0.27 72
IV.CERA.HHZ. 2023-03-26T23:51:00.55 0.1 undecidable manual P 231 25.4523 126 -0.38 96
IV.PABO.HHZ. 2023-03-26T23:50:59.02 0.1 undecidable manual P 87 10.878 152 -0.41 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERA.HNE. ML:1.3 0.000090136315 0.256 AML other m 2023-03-26T23:51:07.44
IV.CERA.HHE. ML:1.3 0.00008702299 0.2176 AML other m 2023-03-26T23:51:07.44
IV.CERA.HHN. ML:1.2 0.00007652139499999999 0.1792 AML other m 2023-03-26T23:51:07.74
IV.LPEL.HHN. ML:1.7 0.0001795 0.12 AML other m 2023-03-26T23:51:08.04
IV.LPEL.HNN. ML:1.7 0.00015673180000000002 0.128 AML other m 2023-03-26T23:51:08.38
IV.VAGA.HHE. ML:1.6 0.00012151246499999998 0.2432 AML other m 2023-03-26T23:51:08.75
IV.LPEL.HHE. ML:1.7 0.000165849245 0.0768 AML other m 2023-03-26T23:51:08.95
IV.LPEL.HNE. ML:1.7 0.00018880054999999998 0.1152 AML other m 2023-03-26T23:51:08.96
IV.VAGA.HHN. ML:1.8 0.00020496395 0.2432 AML other m 2023-03-26T23:51:09.23
IV.VAGA.HNN. ML:1.8 0.000188329505 0.2432 AML other m 2023-03-26T23:51:09.24
IV.VAGA.HNE. ML:1.6 0.00011860794 0.1536 AML other m 2023-03-26T23:51:09.62
IV.CERA.HNN. ML:1.3 0.00008109484 0.32 AML other m 2023-03-26T23:51:10.31
IV.INTR.HHE. ML:1.6 0.00010405915 0.1792 AML other m 2023-03-26T23:51:10.31
IV.POFI.HHE. ML:1.4 0.00006845 0.38 AML other m 2023-03-26T23:51:10.58
IV.INTR.HHN. ML:1.8 0.000165906165 0.1664 AML other m 2023-03-26T23:51:10.38
IV.POFI.HHN. ML:1.3 0.00005096214 0.384 AML other m 2023-03-26T23:51:10.79
IV.MCI.EHE. ML:1.7 0.00014072980000000003 0.3584 AML other m 2023-03-26T23:51:11.64
IV.VVLD.HNN. ML:1.7 0.00011058024999999999 0.1664 AML other m 2023-03-26T23:51:12.27
IV.VVLD.HHE. ML:1.6 0.00009695197 0.1152 AML other m 2023-03-26T23:51:12.19
IV.VVLD.HHN. ML:1.8 0.0001325 0.16 AML other m 2023-03-26T23:51:12.35
IV.LRP.EHE. ML:1.6 0.0000727723 0.3072 AML other m 2023-03-26T23:51:13.38
IV.MCI.EHN. ML:1.6 0.000094657485 0.2432 AML other m 2023-03-26T23:51:13.40
IV.LRP.EHN. ML:1.4 0.000053500000000000006 0.28 AML other m 2023-03-26T23:51:13.47
IV.INTR.HNN. ML:1.7 0.00014370725 0.448 AML other m 2023-03-26T23:51:16.51
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