Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 21-03-2023 and time 18:47:20 (UTC) in region 4 km E Ripabottoni (CB)

A magnitude ML 1.2 earthquake occured in region: 4 km E Ripabottoni (CB), on

  • 21-03-2023 18:47:20 (UTC)
  • 21-03-2023 19:47:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.6880, 14.8580 at 20 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ripabottoni CB 4 514 514
Provvidenti CB 5 119 633
Casacalenda CB 6 2135 2768
Bonefro CB 7 1384 4152
Morrone del Sannio CB 7 587 4739
Sant'Elia a Pianisi CB 7 1818 6557
San Giuliano di Puglia CB 9 1042 7599
Montelongo CB 9 365 7964
Monacilioni CB 9 523 8487
Campolieto CB 10 839 9326
Colletorto CB 10 1938 11264
Montorio nei Frentani CB 10 437 11701
Castellino del Biferno CB 11 545 12246
Macchia Valfortore CB 11 576 12822
Santa Croce di Magliano CB 12 4435 17257
Pietracatella CB 12 1375 18632
Lupara CB 13 505 19137
Larino CB 13 6793 25930
Petrella Tifernina CB 14 1170 27100
Guardialfiera CB 14 1065 28165
Rotello CB 14 1212 29377
San Giovanni in Galdo CB 14 580 29957
Castelbottaccio CB 14 312 30269
Carlantino FG 15 980 31249
Toro CB 15 1391 32640
Matrice CB 15 1115 33755
Lucito CB 15 696 34451
Montagano CB 16 1086 35537
Campodipietra CB 17 2570 38107
Celenza Valfortore FG 17 1598 39705
Civitacampomarano CB 17 417 40122
Ripalimosani CB 18 3114 43236
Ururi CB 19 2693 45929
Jelsi CB 20 1781 47710
Limosano CB 20 768 48478
Castelmauro CB 20 1505 49983

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of San Severo (53905 inhabitants)
62 Km W of Foggia (151991 inhabitants)
62 Km N of Benevento (60091 inhabitants)
81 Km NE of Caserta (76326 inhabitants)
86 Km N of Avellino (54857 inhabitants)
89 Km W of Manfredonia (57279 inhabitants)
92 Km NE of Acerra (59573 inhabitants)
93 Km SE of Chieti (51815 inhabitants)
96 Km NE of Aversa (53047 inhabitants)
97 Km NE of Afragola (65057 inhabitants)
99 Km W of Cerignola (58396 inhabitants)
99 Km NE 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 1.2 2023-03-21
18:47:20		 41.6883 14.8578 20 2024-03-01
17:18:19		 Bollettino Sismico Italiano INGV 124164261
Reviewed
Rev100 		ML 1.3 2023-03-21
18:47:18		 41.8157 14.7898 10 2023-03-21
19:05:27		 Sala Sismica INGV-Roma 115603091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-21 18:47:20 ± 0.32
Latitude 41.6883 ± 0.0216
Longitude 14.8578 ± 0.0205
Depth (km) 20 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 124164261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2396
Semi-minor axis of confidence ellipse (meter) 1170
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 148
Circular confidence region, given by single value of horizontal uncertainty (meter) 2400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 205
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.54049
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 124164261
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-20 15:31:54

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 115603091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-21 19:05:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
TV.GMB1.HHZ. 2023-03-21T18:49:08.39 3.0 undecidable manual Sg 4.5 0
IV.IMOL.HNZ. 2023-03-21T18:48:59.58 3.0 undecidable manual Sg 6.16 0
IV.ZCCA.HHZ. 2023-03-21T18:48:51.88 3.0 undecidable manual Sn -9.99 0
IV.OSSC.HHZ. 2023-03-21T18:48:39.87 3.0 undecidable manual Sn -7.37 0
GU.RORO.HHZ. 2023-03-21T18:48:38.80 3.0 undecidable manual Pn -1.39 0
IV.SELL.HHZ. 2023-03-21T18:48:05.57 3.0 undecidable manual Pn -4.21 0
IV.MESG.HHZ. 2023-03-21T18:47:57.25 3.0 negative manual Pn -4.82 0
IV.NOCI.HHZ. 2023-03-21T18:47:54.25 3.0 negative manual Pg 0.63 0
IV.NARO.HHZ. 2023-03-21T18:47:52.69 3.0 undecidable manual Pn -5.83 0
IV.CMPR.HHZ. 2023-03-21T18:47:42.63 3.0 positive manual Pn -5.05 0
IV.VAGA.HHZ. 2023-03-21T18:47:39.69 0.6 undecidable manual S 240 59.9955 101 0.8 37
OT.OT04.EHE. 2023-03-21T18:47:31.36 0.3 undecidable manual P 86 59.9955 101 0.38 66
IV.SACR.HNN. 2023-03-21T18:47:31.98 0.6 undecidable manual S 201 34.6431 111 -0.39 46
IV.VAGA.HHZ. 2023-03-21T18:47:30.94 1.0 undecidable manual P 240 59.9955 101 -0.05 23
IV.BSSO.HHZ. 2023-03-21T18:47:30.77 0.6 undecidable manual S 234 26.9508 118 0.26 47
IV.GATE.HHZ. 2023-03-21T18:47:29.08 0.6 undecidable manual S 167 19.869 128 0.15 49
IV.MELA.HHZ. 2023-03-21T18:47:29.83 0.3 undecidable manual S 85 22.3554 124 0.37 70
IV.CIGN.HHZ. 2023-03-21T18:47:27.26 0.6 undecidable manual S 134 5.3946 163 0.58 45
IV.BSSO.HHZ. 2023-03-21T18:47:26.10 0.3 undecidable manual P 234 26.9508 118 -0.05 74
IV.SACR.HNN. 2023-03-21T18:47:26.66 0.3 undecidable manual P 201 34.6431 111 -0.56 65
IV.MELA.HHZ. 2023-03-21T18:47:25.54 0.1 undecidable manual P 85 22.3554 124 0 100
IV.GATE.HHZ. 2023-03-21T18:47:25.30 0.3 undecidable manual P 167 19.869 128 0.06 75
IV.CIGN.HHZ. 2023-03-21T18:47:23.01 0.1 undecidable manual P 134 5.3946 163 -0.93 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CIGN.HHN. ML:1.6 0.00030194345 0.5888 AML other m 2023-03-21T18:47:29.38
IV.CIGN.HHE. ML:1.5 0.00025819205 0.3968 AML other m 2023-03-21T18:47:28.15
IV.GATE.HHE. ML:1.0 0.000049127685000000006 0.3328 AML other m 2023-03-21T18:47:30.76
IV.GATE.HHN. ML:1.0 0.000061897945 0.32 AML other m 2023-03-21T18:47:31.85
IV.CERA.HNE. ML:2.7 0.000853 0.54 AML other m 2023-03-21T18:47:58.66
IV.GATE.HNN. ML:1.1 0.00006768544 0.32 AML other m 2023-03-21T18:47:31.87
IV.GATE.HNE. ML:1.1 0.000073000335 0.6272 AML other m 2023-03-21T18:47:32.78
IV.BSSO.HHE. ML:1.0 0.000043769925000000004 0.32 AML other m 2023-03-21T18:47:31.37
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