Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 26-12-2023 and time 07:37:57 (Italy) in region 4 km NW Pietraroja (BN)

A magnitude ML 1.0 earthquake occured in region: 4 km NW Pietraroja (BN), on

  • 26-12-2023 06:37:57 (UTC)
  • 26-12-2023 07:37:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.3800, 14.5230 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.

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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
Pietraroja BN 4 545 545
Cusano Mutri BN 5 4091 4636
Guardiaregia CB 7 801 5437
Campochiaro CB 8 646 6083
Sepino CB 9 1964 8047
San Polo Matese CB 9 470 8517
Cerreto Sannita BN 11 3940 12457
Gioia Sannitica CE 11 3638 16095
San Lorenzello BN 12 2227 18322
Sassinoro BN 12 618 18940
San Potito Sannitico CE 12 1925 20865
Faicchio BN 12 3634 24499
Castello del Matese CE 12 1494 25993
Bojano CB 12 8058 34051
San Gregorio Matese CE 13 988 35039
Piedimonte Matese CE 13 11297 46336
Morcone BN 13 4932 51268
San Giuliano del Sannio CB 13 1029 52297
Vinchiaturo CB 14 3324 55621
Colle d'Anchise CB 15 807 56428
Guardia Sanframondi BN 15 5078 61506
Cercepiccola CB 15 681 62187
San Massimo CB 16 855 63042
San Salvatore Telesino BN 16 3999 67041
San Lupo BN 16 801 67842
Castelvenere BN 16 2562 70404
Alife CE 17 7616 78020
San Lorenzo Maggiore BN 17 2154 80174
Baranello CB 17 2673 82847
Pontelandolfo BN 17 2167 85014
Santa Croce del Sannio BN 18 927 85941
Telese Terme BN 18 7486 93427
Puglianello BN 19 1349 94776
Spinete CB 19 1320 96096
Cercemaggiore CB 19 3777 99873
Roccamandolfi IS 19 938 100811
Cantalupo nel Sannio IS 19 739 101550
Casalduni BN 20 1378 102928
Mirabello Sannitico CB 20 2180 105108
Amorosi BN 20 2797 107905
Busso CB 20 1273 109178

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of Benevento (60091 inhabitants)
37 Km NE of Caserta (76326 inhabitants)
50 Km N of Acerra (59573 inhabitants)
52 Km NE of Aversa (53047 inhabitants)
54 Km NE of Afragola (65057 inhabitants)
56 Km NE of Casoria (77642 inhabitants)
57 Km NW of Avellino (54857 inhabitants)
57 Km NE of Giugliano in Campania (122974 inhabitants)
60 Km NE of Marano di Napoli (59874 inhabitants)
63 Km N of Portici (55274 inhabitants)
64 Km NE of Napoli (974074 inhabitants)
65 Km N of Ercolano (53709 inhabitants)
67 Km N of Torre del Greco (86275 inhabitants)
69 Km NE of Pozzuoli (81661 inhabitants)
70 Km N of Scafati (50787 inhabitants)
76 Km N of Castellammare di Stabia (66466 inhabitants)
77 Km N of Cava de' Tirreni (53659 inhabitants)
79 Km W of San Severo (53905 inhabitants)
80 Km N of Salerno (135261 inhabitants)
86 Km W of Foggia (151991 inhabitants)
94 Km NW of Battipaglia (50786 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 1.0 2023-12-26
06:37:57		 41.3798 14.5228 11 2023-12-26
07:29:30		 Sala Sismica INGV-Roma 124272851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-26 06:37:57 ± 0.07
Latitude 41.3798 ± 0.0045
Longitude 14.5228 ± 0.0072
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124272851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 570
Semi-minor axis of confidence ellipse (meter) 525
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 276
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
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) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.01619
Epicentral distance of station farthest from the epicenter (degree) 0.42178
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 124272851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-26 07:29:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MIDA.HHZ. 2023-12-26T06:38:09.20 1.0 undecidable manual S 323 36.6411 50 -0.32 22
IV.BSSO.HHZ. 2023-12-26T06:38:05.15 0.3 undecidable manual S 18 19.3695 119 0.32 69
IV.MRB1.HHZ. 2023-12-26T06:38:05.80 1.0 undecidable manual P 127 46.8198 50 -0.07 23
IV.MIDA.HHZ. 2023-12-26T06:38:04.09 0.3 undecidable manual P 323 36.6411 50 -0.21 69
IV.PIGN.HNN. 2023-12-26T06:38:04.27 0.6 undecidable manual P 235 34.8429 50 0.25 46
IV.PSB1.HHZ. 2023-12-26T06:38:03.56 0.6 undecidable manual P 126 29.6481 50 0.35 45
IV.SGG.HHZ. 2023-12-26T06:38:03.08 0.6 undecidable manual S 274 11.9769 132 0.35 46
IV.VITU.HNZ. 2023-12-26T06:38:02.28 0.3 undecidable manual P 158 23.5542 50 0 73
IV.BSSO.HHZ. 2023-12-26T06:38:01.47 0.1 undecidable manual P 18 19.3695 119 -0.12 96
IV.SACR.HNZ. 2023-12-26T06:38:00.88 0.6 undecidable manual P 83 15.3735 125 -0.03 49
IV.SGG.HHZ. 2023-12-26T06:38:00.34 0.1 undecidable manual P 274 11.9769 132 -0.04 99
IV.PTRJ.HHZ. 2023-12-26T06:38:00.84 0.1 undecidable manual S 164 1.7982 170 -0.07 100
IV.PTRJ.HHZ. 2023-12-26T06:37:59.15 0.1 undecidable manual P 164 1.7982 170 -0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PTRJ.HHN. ML:0.0 0.0002379135 0.2208 AML other m 2023-12-26T06:38:01.35
IV.PTRJ.HHE. ML:0.0 0.0003464144 0.2016 AML other m 2023-12-26T06:38:02.08
IV.SGG.HHE. ML:0.0 0.00007974848500000001 0.4224 AML other m 2023-12-26T06:38:07.51
IV.SGG.HHN. ML:0.0 0.00007720485499999999 0.4224 AML other m 2023-12-26T06:38:09.86
IV.PTRJ.HNE. ML:1.2 0.0002919735 0.1792 AML other m 2023-12-26T06:38:01.00
IV.BSSO.HHE. ML:1.0 0.000078468865 0.2784 AML other m 2023-12-26T06:38:05.27
IV.BSSO.HHN. ML:0.8 0.000049869275000000005 0.3584 AML other m 2023-12-26T06:38:07.81
IV.MRB1.HHE. ML:0.8 0.000022346235 0.4192 AML other m 2023-12-26T06:38:25.14
IV.MRB1.HHN. ML:1.0 0.000026197230000000003 0.56 AML other m 2023-12-26T06:38:26.09
IV.MRB1.HNE. ML:1.2 0.00004698901 0.4288 AML other m 2023-12-26T06:38:17.46
IV.MRB1.HNN. ML:1.2 0.000040756609999999996 0.608 AML other m 2023-12-26T06:38:25.72
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