Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 24-01-2023 and time 03:55:00 (Italy) in region Alvito (FR)

A magnitude ML 2.3 earthquake occured in region: Alvito (FR), on

  • 24-01-2023 02:55:00 (UTC)
  • 24-01-2023 03:55:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.6920, 13.7390 at 10 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
Alvito FR 1 2713 2713
Vicalvi FR 3 783 3496
Posta Fibreno FR 4 1139 4635
Fontechiari FR 6 1303 5938
Gallinaro FR 6 1269 7207
San Donato Val di Comino FR 7 2107 9314
Casalvieri FR 7 2698 12012
Campoli Appennino FR 7 1725 13737
Casalattico FR 8 574 14311
Broccostella FR 9 2741 17052
Atina FR 9 4316 21368
Pescosolido FR 10 1555 22923
Settefrati FR 10 728 23651
Sora FR 11 26144 49795
Arpino FR 12 7262 57057
Picinisco FR 12 1218 58275
Villa Latina FR 12 1241 59516
Opi AQ 13 420 59936
Santopadre FR 13 1357 61293
Isola del Liri FR 14 11715 73008
Pescasseroli AQ 14 2203 75211
Belmonte Castello FR 14 739 75950
Terelle FR 16 422 76372
Castelliri FR 16 3454 79826
Colle San Magno FR 16 699 80525
Roccasecca FR 17 7365 87890
Rocca d'Arce FR 17 959 88849
Arce FR 18 5756 94605
San Biagio Saracinisco FR 18 349 94954
Fontana Liri FR 18 2953 97907
Castrocielo FR 18 3965 101872
Villetta Barrea AQ 18 653 102525
Colfelice FR 19 1932 104457
Civitella Alfedena AQ 19 296 104753
Balsorano AQ 19 3569 108322
Monte San Giovanni Campano FR 19 12929 121251
Sant'Elia Fiumerapido FR 20 6166 127417

Municipalities with at least 50000 inhabitants

An earthquake occurred to
74 Km E of Latina (125985 inhabitants)
79 Km SE of L'Aquila (69753 inhabitants)
80 Km E of Velletri (53303 inhabitants)
82 Km SW of Chieti (51815 inhabitants)
84 Km E of Tivoli (56533 inhabitants)
85 Km NW of Caserta (76326 inhabitants)
89 Km NW of Aversa (53047 inhabitants)
91 Km E of Guidonia Montecelio (88673 inhabitants)
91 Km E of Aprilia (73446 inhabitants)
93 Km NW of Giugliano in Campania (122974 inhabitants)
95 Km SW of Pescara (121014 inhabitants)
96 Km NW of Marano di Napoli (59874 inhabitants)
96 Km E of Anzio (54211 inhabitants)
98 Km SW of Montesilvano (53738 inhabitants)
98 Km NW of Afragola (65057 inhabitants)
98 Km NW of Acerra (59573 inhabitants)
98 Km NW of Pozzuoli (81661 inhabitants)
99 Km NW of Casoria (77642 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 2.3 2023-01-24
02:55:00		 41.6918 13.7392 10 2024-03-01
17:17:55		 Bollettino Sismico Italiano INGV 114453021
Reviewed
Rev100 		ML 2.3 2023-01-24
02:55:00		 41.6882 13.7502 10 2023-01-24
03:01:39		 Sala Sismica INGV-Roma 113753281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-24 02:55:00 ± 0.06
Latitude 41.6918 ± 0.0036
Longitude 13.7392 ± 0.0048
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 114453021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 375
Semi-minor axis of confidence ellipse (meter) 329
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 265
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 49
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.03238
Epicentral distance of station farthest from the epicenter (degree) 1.49647
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 113753281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-24 03:01:39

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 114453021
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-08-21 13:58:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SGRT.HHZ. 2023-01-24T02:55:28.33 0.3 undecidable manual P 87 166.1115 50 0.89 42
IV.CSP1.EHZ. 2023-01-24T02:55:28.26 0.6 undecidable manual P 344 161.3163 50 1.56 20
IV.VCEL.EHZ. 2023-01-24T02:55:24.72 0.6 undecidable manual S 6 78.366 50 0.8 36
IV.LATB.EHZ. 2023-01-24T02:55:21.27 0.6 undecidable manual S 251 68.0763 50 0.1 45
IV.FAGN.HHZ. 2023-01-24T02:55:20.29 0.6 undecidable manual S 349 64.8906 50 -0.04 46
IV.T0110.HHZ. 2023-01-24T02:55:19.21 0.6 undecidable manual S 3 59.6958 50 0.27 44
IV.LPEL.HHZ. 2023-01-24T02:55:17.89 0.6 undecidable manual S 43 53.8017 50 0.53 42
IV.VENT.EHZ. 2023-01-24T02:55:17.90 0.3 undecidable manual P 195 103.0191 50 0.19 62
IV.RDP.HHZ. 2023-01-24T02:55:15.02 0.3 undecidable manual P 275 85.5477 50 0 67
IV.MTCE.HHZ. 2023-01-24T02:55:15.02 0.3 undecidable manual P 294 90.1431 50 -0.72 55
IT.SULP.HGN. 2023-01-24T02:55:15.34 0.3 undecidable manual S 20 46.3203 50 -0.02 72
IT.SULA.HNE. 2023-01-24T02:55:15.28 0.6 undecidable manual S 19 44.8218 50 0.33 45
IV.PTQR.HHZ. 2023-01-24T02:55:15.55 0.3 undecidable manual S 323 46.1205 50 0.25 69
IV.GIGS.HHZ. 2023-01-24T02:55:14.43 0.6 undecidable manual P 351 85.5477 50 -0.59 39
IT.SULC.HNE. 2023-01-24T02:55:14.87 0.6 undecidable manual S 19 44.0226 50 0.12 47
IV.FIAM.HHZ. 2023-01-24T02:55:14.58 0.3 undecidable manual P 321 81.9513 50 0.11 66
IV.GIUL.HHZ. 2023-01-24T02:55:14.64 0.6 undecidable manual S 250 42.8238 50 0.21 46
IV.INTR.HHZ. 2023-01-24T02:55:13.11 0.3 undecidable manual S 21 38.0286 50 -0.03 73
IV.VCEL.EHZ. 2023-01-24T02:55:13.84 0.3 undecidable manual P 6 78.366 50 -0.08 67
IV.GUAR.HHZ. 2023-01-24T02:55:12.86 0.6 undecidable manual S 288 37.1295 50 -0.05 48
IV.PIGN.HHZ. 2023-01-24T02:55:12.98 0.3 undecidable manual P 146 65.6898 50 1.01 51
IV.LATB.EHZ. 2023-01-24T02:55:11.87 0.1 positive manual P 251 68.0763 50 -0.46 84
IV.SGG.HHZ. 2023-01-24T02:55:11.98 0.3 undecidable manual P 122 62.9925 50 0.43 64
IV.FAGN.HHZ. 2023-01-24T02:55:11.62 0.3 undecidable manual P 349 64.8906 50 -0.22 67
IV.PABO.HHZ. 2023-01-24T02:55:10.42 0.1 undecidable manual P 83 54.0015 50 0.26 90
IV.T0110.HHZ. 2023-01-24T02:55:10.90 0.1 undecidable manual P 3 59.6958 50 -0.14 91
IV.LIK.EHZ.01 2023-01-24T02:55:10.13 0.6 undecidable manual S 215 26.0517 111 0.24 48
IV.LPEL.HHZ. 2023-01-24T02:55:09.57 0.3 undecidable manual P 43 53.8017 50 -0.56 63
IV.CERA.HHZ. 2023-01-24T02:55:09.40 0.3 undecidable manual S 114 25.3524 111 -0.29 71
IV.VAGA.HHZ. 2023-01-24T02:55:09.14 0.3 undecidable manual P 127 51.3153 50 -0.6 62
IV.PTQR.HHZ. 2023-01-24T02:55:08.78 0.1 undecidable manual P 323 46.1205 50 -0.16 93
IV.MCI.EHZ. 2023-01-24T02:55:08.77 0.3 undecidable manual S 165 23.1546 113 -0.19 72
IT.SULP.HGN. 2023-01-24T02:55:08.71 0.3 undecidable manual P 20 46.3203 50 -0.26 68
IV.GIUL.HHZ. 2023-01-24T02:55:08.34 0.1 undecidable manual P 250 42.8238 50 -0.1 95
IV.VVLD.HHZ. 2023-01-24T02:55:08.23 0.3 undecidable manual S 334 21.9669 114 -0.34 70
IT.SULC.HNE. 2023-01-24T02:55:08.44 0.3 undecidable manual P 19 44.0226 50 -0.18 70
IT.SULA.HNE. 2023-01-24T02:55:08.58 0.3 undecidable manual P 19 44.8218 50 -0.16 70
IV.GUAR.HHZ. 2023-01-24T02:55:07.35 0.1 positive manual P 288 37.1295 50 -0.21 94
IV.INTR.HHZ. 2023-01-24T02:55:07.52 0.1 undecidable manual P 21 38.0286 50 -0.17 94
IV.LRP.EHZ. 2023-01-24T02:55:06.28 0.1 undecidable manual S 249 13.5753 126 0.23 97
IV.CERA.HHZ. 2023-01-24T02:55:05.34 0.1 positive manual P 114 25.3524 111 -0.36 93
IV.LIK.EHZ.01 2023-01-24T02:55:05.79 0.1 positive manual P 215 26.0517 111 -0.03 99
IV.MCI.EHZ. 2023-01-24T02:55:05.11 0.1 positive manual P 165 23.1546 113 -0.17 97
IV.VVLD.HHZ. 2023-01-24T02:55:05.03 0.1 positive manual P 334 21.9669 114 -0.03 100
IT.OPI.HGN. 2023-01-24T02:55:05.64 0.6 undecidable manual S 39 11.9769 129 0.02 51
IV.POFI.HNZ. 2023-01-24T02:55:04.01 0.6 undecidable manual S 322 3.5964 160 0.15 50
IT.OPI.HGN. 2023-01-24T02:55:03.53 0.1 positive manual P 39 11.9769 129 0.18 99
IV.LRP.EHZ. 2023-01-24T02:55:03.89 0.1 positive manual P 249 13.5753 126 0.29 96
IV.POFI.HNZ. 2023-01-24T02:55:02.69 0.1 negative manual P 322 3.5964 160 0.36 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHE. ML:2.5 0.006045 0.4 AML other m 2023-01-24T02:55:04.30
IV.POFI.HNE. ML:2.6 0.00752 0.4 AML other m 2023-01-24T02:55:04.31
IV.POFI.HHN. ML:2.3 0.00364 0.6 AML other m 2023-01-24T02:55:05.27
IV.POFI.HNN. ML:2.4 0.0043100000000000005 0.6 AML other m 2023-01-24T02:55:05.28
IV.LRP.EHN. ML:2.3 0.002275 0.12 AML other m 2023-01-24T02:55:06.69
IV.LRP.EHE. ML:2.8 0.006475 0.4 AML other m 2023-01-24T02:55:06.81
IV.VVLD.HHN. ML:2.3 0.001385 0.14 AML other m 2023-01-24T02:55:08.98
IV.VVLD.HNN. ML:2.3 0.001315 0.14 AML other m 2023-01-24T02:55:08.99
IV.MCI.EHN. ML:2.9 0.0051400000000000005 0.2 AML other m 2023-01-24T02:55:09.48
IV.MCI.EHE. ML:3.0 0.006385 0.18 AML other m 2023-01-24T02:55:09.88
IV.VVLD.HNE. ML:2.2 0.0011200000000000001 1 AML other m 2023-01-24T02:55:10.49
IV.VVLD.HHE. ML:2.2 0.0011600000000000002 1 AML other m 2023-01-24T02:55:10.49
IV.CERA.HNN. ML:2.5 0.00181 0.46 AML other m 2023-01-24T02:55:12.05
IV.CERA.HHN. ML:2.5 0.001835 0.48 AML other m 2023-01-24T02:55:12.05
IV.INTR.HHN. ML:2.7 0.00181 0.52 AML other m 2023-01-24T02:55:14.57
IV.INTR.HNN. ML:2.6 0.001685 0.52 AML other m 2023-01-24T02:55:14.57
IV.INTR.HHE. ML:2.6 0.0015750000000000002 0.2 AML other m 2023-01-24T02:55:14.65
IV.INTR.HNE. ML:2.6 0.0016099999999999999 0.2 AML other m 2023-01-24T02:55:14.66
IV.GIUL.HHE. ML:2.1 0.00042600000000000005 1.4 AML other m 2023-01-24T02:55:16.78
IV.GIUL.HHN. ML:2.2 0.000505 0.96 AML other m 2023-01-24T02:55:16.50
IV.CERA.HNE. ML:2.4 0.0016400000000000002 1.5 AML other m 2023-01-24T02:55:17.82
IV.CERA.HHE. ML:2.4 0.0016699999999999998 1.48 AML other m 2023-01-24T02:55:17.82
IV.PTQR.HHN. ML:2.2 0.000459 0.6 AML other m 2023-01-24T02:55:17.27
IV.PTQR.HHE. ML:2.4 0.0007205 1.24 AML other m 2023-01-24T02:55:17.90
IV.LPEL.HHN. ML:2.2 0.0003815 0.8 AML other m 2023-01-24T02:55:18.57
IV.GUAR.HNE. ML:2.1 0.000508 0.52 AML other m 2023-01-24T02:55:18.49
IV.GUAR.HHE. ML:2.1 0.000504 0.5 AML other m 2023-01-24T02:55:18.49
IV.VAGA.HNN. ML:2.3 0.0004945 0.22 AML other m 2023-01-24T02:55:19.59
IV.VAGA.HHN. ML:2.3 0.000503 0.22 AML other m 2023-01-24T02:55:19.59
IV.LPEL.HNE. ML:2.4 0.0006839999999999999 0.2 AML other m 2023-01-24T02:55:20.16
IV.LPEL.HHE. ML:2.4 0.000631 0.2 AML other m 2023-01-24T02:55:20.06
IV.LPEL.HNN. ML:2.2 0.0004235 1.16 AML other m 2023-01-24T02:55:20.74
IV.VAGA.HHE. ML:2.1 0.00028900000000000003 0.72 AML other m 2023-01-24T02:55:20.46
IV.VAGA.HNE. ML:2.2 0.000409 0.42 AML other m 2023-01-24T02:55:20.47
IV.T0110.HHE. ML:2.6 0.0008055 0.96 AML other m 2023-01-24T02:55:20.21
IV.T0110.HHN. ML:2.5 0.0006990000000000001 0.54 AML other m 2023-01-24T02:55:20.61
IV.GUAR.HHN. ML:2.2 0.0006025000000000001 0.32 AML other m 2023-01-24T02:55:21.16
IV.GUAR.HNN. ML:2.2 0.0005975 0.34 AML other m 2023-01-24T02:55:21.16
IV.FAGN.HHN. ML:2.6 0.000654 0.64 AML other m 2023-01-24T02:55:23.47
IV.SGG.HHN. ML:2.2 0.00027649999999999994 0.38 AML other m 2023-01-24T02:55:23.61
IV.PABO.HHE. ML:1.8 0.000152 1.26 AML other m 2023-01-24T02:55:24.09
IV.FAGN.HHE. ML:2.6 0.0008020000000000001 0.36 AML other m 2023-01-24T02:55:25.08
IV.LATB.EHN. ML:1.6 0.00007569999999999998 0.82 AML other m 2023-01-24T02:55:25.78
IV.LATB.EHE. ML:1.6 0.00007335 1.06 AML other m 2023-01-24T02:55:26.13
IV.VCEL.EHE. ML:2.5 0.00048249999999999996 0.66 AML other m 2023-01-24T02:55:27.36
IV.VCEL.EHN. ML:2.6 0.0005309999999999999 0.58 AML other m 2023-01-24T02:55:28.59
IV.GIGS.HHE. ML:1.6 0.0000558 1.16 AML other m 2023-01-24T02:55:29.03
IV.SGG.HHE. ML:2.0 0.000174 0.46 AML other m 2023-01-24T02:55:31.15
IV.MTCE.HHN. ML:2.0 0.00010435 1.52 AML other m 2023-01-24T02:55:32.09
IV.MTCE.HHE. ML:2.0 0.00013045 1.06 AML other m 2023-01-24T02:55:32.86
IV.RDP.HHN. ML:2.7 0.000631 0.5 AML other m 2023-01-24T02:55:33.43
IV.RDP.HHE. ML:2.6 0.0004735 0.5 AML other m 2023-01-24T02:55:33.97
IV.PABO.HHN. ML:1.8 0.00016 1.28 AML other m 2023-01-24T02:55:34.93
IV.GIGS.HHN. ML:1.6 0.00005300000000000001 1.44 AML other m 2023-01-24T02:55:35.96
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
Waveforms Seismic signals in miniseed + resp format Download