Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 21-08-2023 and time 12:34:21 (UTC) in region 2 km W Petruro Irpino (AV)

A magnitude ML 1.7 earthquake occured in region: 2 km W Petruro Irpino (AV), on

  • 21-08-2023 12:34:21 (UTC)
  • 21-08-2023 14:34:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.0260, 14.7780 at 9 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.

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
Petruro Irpino AV 2 349 349
Altavilla Irpina AV 2 4196 4545
Chianche AV 2 475 5020
Ceppaloni BN 3 3415 8435
Arpaise BN 3 761 9196
Torrioni AV 3 549 9745
Tufo AV 4 889 10634
Roccabascerana AV 5 2354 12988
Sant'Angelo a Cupolo BN 5 4325 17313
Pietrastornina AV 5 1553 18866
San Leucio del Sannio BN 6 3106 21972
Santa Paolina AV 6 1256 23228
Grottolella AV 6 1869 25097
Sant'Angelo a Scala AV 6 730 25827
Pannarano BN 7 2130 27957
San Nicola Manfredi BN 7 3722 31679
Prata di Principato Ultra AV 7 2944 34623
San Martino Sannita BN 7 1230 35853
Montefusco AV 7 1338 37191
San Nazzaro BN 7 884 38075
Pratola Serra AV 8 3764 41839
San Giorgio del Sannio BN 8 10022 51861
Capriglia Irpina AV 8 2398 54259
Montefredane AV 8 2297 56556
Summonte AV 9 1583 58139
Calvi BN 9 2682 60821
Pietradefusi AV 10 2348 63169
San Martino Valle Caudina AV 10 4884 68053
Apollosa BN 10 2658 70711
Ospedaletto d'Alpinolo AV 10 2145 72856
Montemiletto AV 11 5313 78169
Manocalzati AV 11 3160 81329
Montefalcione AV 11 3359 84688
Torre Le Nocelle AV 11 1324 86012
Benevento BN 12 60091 146103
Venticano AV 12 2537 148640
Mercogliano AV 12 12267 160907
Montesarchio BN 12 13500 174407
Candida AV 12 1147 175554
Avellino AV 12 54857 230411
Atripalda AV 13 11020 241431
San Potito Ultra AV 13 1558 242989
Cervinara AV 14 9658 252647
Parolise AV 14 663 253310
Quadrelle AV 15 1865 255175
Castelpoto BN 15 1254 256429
Bonea BN 15 1448 257877
Mugnano del Cardinale AV 15 5373 263250
Lapio AV 15 1572 264822
Cesinali AV 15 2584 267406
Sorbo Serpico AV 15 583 267989
Sirignano AV 15 2933 270922
Salza Irpina AV 15 772 271694
Rotondi AV 15 3591 275285
Taurasi AV 15 2377 277662
Aiello del Sabato AV 16 3958 281620
Chiusano di San Domenico AV 16 2277 283897
Baiano AV 16 4718 288615
Monteforte Irpino AV 16 11467 300082
Campoli del Monte Taburno BN 16 1546 301628
Santo Stefano del Sole AV 16 2208 303836
Tocco Caudio BN 17 1508 305344
Avella AV 17 7890 313234
Apice BN 17 5686 318920
Paolisi BN 17 2072 320992
Sperone AV 17 3706 324698
Foglianise BN 17 3385 328083
Contrada AV 18 3053 331136
San Michele di Serino AV 18 2530 333666
San Mango sul Calore AV 18 1185 334851
Cautano BN 18 2044 336895
Mirabella Eclano AV 18 7684 344579
Sant'Angelo all'Esca AV 18 801 345380
Luogosano AV 18 1187 346567
Bucciano BN 18 2100 348667
Forino AV 18 5384 354051
Paduli BN 18 3978 358029
Santa Lucia di Serino AV 19 1402 359431
Airola BN 19 8195 367626
Arpaia BN 19 1992 369618
Roccarainola NA 19 7082 376700
Tufino NA 19 3776 380476
Moschiano AV 19 1673 382149
Visciano NA 20 4454 386603
Vitulano BN 20 2944 389547
Torrecuso BN 20 3407 392954
Taurano AV 20 1546 394500
Pietrelcina BN 20 3114 397614
Volturara Irpina AV 20 3289 400903

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km S of Benevento (60091 inhabitants)
12 Km N of Avellino (54857 inhabitants)
35 Km E of Acerra (59573 inhabitants)
37 Km N of Cava de' Tirreni (53659 inhabitants)
37 Km NE of Scafati (50787 inhabitants)
38 Km E of Caserta (76326 inhabitants)
39 Km N of Salerno (135261 inhabitants)
41 Km E of Afragola (65057 inhabitants)
42 Km NE of Portici (55274 inhabitants)
43 Km E of Casoria (77642 inhabitants)
44 Km NE of Ercolano (53709 inhabitants)
44 Km NE of Torre del Greco (86275 inhabitants)
44 Km NE of Castellammare di Stabia (66466 inhabitants)
48 Km E of Aversa (53047 inhabitants)
49 Km E of Napoli (974074 inhabitants)
50 Km NW of Battipaglia (50786 inhabitants)
50 Km E of Giugliano in Campania (122974 inhabitants)
51 Km E of Marano di Napoli (59874 inhabitants)
61 Km E of Pozzuoli (81661 inhabitants)
80 Km SW of Foggia (151991 inhabitants)
89 Km SW of San Severo (53905 inhabitants)
97 Km W of Potenza (67122 inhabitants)
98 Km W of Cerignola (58396 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 1.7 2023-08-21
12:34:21		 41.0258 14.7785 9 2023-08-21
12:48:32		 Sala Sismica INGV-Roma 120356821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-21 12:34:21 ± 0.09
Latitude 41.0258 ± 0.0045
Longitude 14.7785 ± 0.0072
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 120356821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 675
Semi-minor axis of confidence ellipse (meter) 70
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 49
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.53779
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 120356821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-08-21 12:48:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LADO.EHZ. 2023-08-21T12:35:29.41 3.0 undecidable manual Sn -1.53 0
IV.FRON.EHZ. 2023-08-21T12:35:06.37 3.0 undecidable manual Pn -1.03 0
IV.AMUR.HHZ. 2023-08-21T12:35:06.73 3.0 undecidable manual S 1.12 0
IV.GUAR.HHZ. 2023-08-21T12:35:06.79 3.0 undecidable manual S 2.16 0
IV.GUAR.HHZ. 2023-08-21T12:34:49.04 3.0 negative manual P 3.25 0
IV.AMUR.HHZ. 2023-08-21T12:34:47.70 3.0 undecidable manual P 1.36 0
IV.BSSO.HHZ. 2023-08-21T12:34:41.50 0.6 undecidable manual S 345 59.6958 50 0.92 36
IV.PTRJ.HHZ. 2023-08-21T12:34:36.75 1.0 undecidable manual S 331 42.9237 50 0.65 21
IV.MCRV.HHZ. 2023-08-21T12:34:36.34 1.0 undecidable manual S 129 42.4242 50 0.38 23
IV.SACR.HHZ. 2023-08-21T12:34:35.87 0.6 undecidable manual S 352 41.625 50 0.11 48
IV.CAFE.HHZ. 2023-08-21T12:34:34.93 0.6 undecidable manual S 89 38.3283 50 0.05 49
IV.GATE.HHZ. 2023-08-21T12:34:34.57 3.0 negative manual P 2.6 0
IV.SNAL.HHZ. 2023-08-21T12:34:34.77 0.6 undecidable manual S 107 37.7289 50 0.05 49
IX.SALI.HNE.01 2023-08-21T12:34:33.94 0.6 undecidable manual S 107 35.2425 50 -0.12 48
IV.BSSO.HHZ. 2023-08-21T12:34:32.58 0.6 undecidable manual P 345 59.6958 50 -0.01 47
IX.MNT3.EHZ.02 2023-08-21T12:34:32.25 0.3 undecidable manual S 138 28.3494 107 0.27 71
IV.MOCO.HHZ. 2023-08-21T12:34:31.03 0.6 undecidable manual P 40 49.617 50 0 48
IV.SGG.HNE. 2023-08-21T12:34:31.39 0.3 undecidable manual P 320 52.1034 50 -0.02 72
IV.SGO.HHZ. 2023-08-21T12:34:31.35 3.0 undecidable manual P -2.77 0
IV.MRB1.HHZ. 2023-08-21T12:34:29.03 0.3 undecidable manual S 56 19.1697 115 0.05 76
IV.MCRV.HHZ. 2023-08-21T12:34:29.66 0.3 undecidable manual P 129 42.4242 50 -0.26 70
IV.CAFE.HHZ. 2023-08-21T12:34:29.33 0.3 undecidable manual P 89 38.3283 50 0.03 73
IV.PTRJ.HHZ. 2023-08-21T12:34:29.42 0.3 undecidable manual P 331 42.9237 50 -0.58 64
IV.PSB1.HHZ. 2023-08-21T12:34:29.69 1.0 undecidable manual S 7 22.0668 112 -0.22 24
IV.SACR.HHZ. 2023-08-21T12:34:29.84 0.6 undecidable manual P 352 41.625 50 0.03 49
IX.LIO3.HHE.02 2023-08-21T12:34:28.83 0.3 undecidable manual P 113 36.5412 50 -0.2 71
IV.SNAL.HHZ. 2023-08-21T12:34:28.92 0.3 undecidable manual P 107 37.7289 50 -0.28 70
IX.SALI.HNE.01 2023-08-21T12:34:28.85 0.3 undecidable manual P 107 35.2425 50 0.03 74
IX.MNT3.EHZ.02 2023-08-21T12:34:27.73 0.3 undecidable manual P 138 28.3494 107 0.11 74
IV.PSB1.HHZ. 2023-08-21T12:34:26.25 0.1 undecidable manual P 7 22.0668 112 -0.18 98
IV.MRB1.HHZ. 2023-08-21T12:34:26.00 0.1 undecidable manual P 56 19.1697 115 0.11 100
IV.PAOL.HHZ. 2023-08-21T12:34:26.20 1.0 undecidable manual P 272 17.6712 116 0.58 22
IV.VITU.HHZ. 2023-08-21T12:34:26.23 0.1 negative manual P 325 21.3675 112 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRB1.HHN. ML:2.2 0.001405 0.3 AML other m 2023-08-21T12:34:29.58
IV.MRB1.HNN. ML:2.2 0.00135 0.3 AML other m 2023-08-21T12:34:29.58
IV.PSB1.HHE. ML:1.8 0.000481 1.24 AML other m 2023-08-21T12:34:30.19
IV.PSB1.HHN. ML:1.7 0.00035999999999999997 0.68 AML other m 2023-08-21T12:34:30.28
IV.PAOL.HHN. ML:1.7 0.00044899999999999996 1.26 AML other m 2023-08-21T12:34:32.21
IV.VITU.HHN. ML:1.8 0.000524 0.24 AML other m 2023-08-21T12:34:32.78
IV.MRB1.HHE. ML:2.1 0.0010525 1.38 AML other m 2023-08-21T12:34:32.96
IV.MRB1.HNE. ML:2.1 0.0010245 1.38 AML other m 2023-08-21T12:34:32.96
IV.PAOL.HHE. ML:1.5 0.000291 1.26 AML other m 2023-08-21T12:34:33.86
IV.VITU.HHE. ML:1.8 0.000515 0.84 AML other m 2023-08-21T12:34:35.68
IV.CAFE.HHN. ML:1.6 0.0001395 1.42 AML other m 2023-08-21T12:34:35.91
IV.SNAL.HHE. ML:1.4 0.000101 0.98 AML other m 2023-08-21T12:34:35.49
IV.CAFE.HHE. ML:1.6 0.00016 0.8 AML other m 2023-08-21T12:34:36.67
IV.SACR.HHN. ML:1.3 0.0000702 0.88 AML other m 2023-08-21T12:34:36.81
IV.SACR.HHE. ML:1.4 0.0000736 1.3 AML other m 2023-08-21T12:34:37.18
IV.PTRJ.HHE. ML:1.4 0.00007865 0.36 AML other m 2023-08-21T12:34:38.61
IV.SNAL.HHN. ML:1.5 0.00011975 0.64 AML other m 2023-08-21T12:34:38.47
IV.MCRV.HHE. ML:1.7 0.000157 1.32 AML other m 2023-08-21T12:34:39.01
IV.MCRV.HHN. ML:1.8 0.00021100000000000003 0.98 AML other m 2023-08-21T12:34:40.67
IV.PTRJ.HHN. ML:1.3 0.00006345 0.26 AML other m 2023-08-21T12:34:41.43
IV.MOCO.HHE. ML:1.3 0.0000532 0.42 AML other m 2023-08-21T12:34:51.50
IV.MOCO.HHN. ML:1.2 0.0000383 1.58 AML other m 2023-08-21T12:34:51.15
IV.GUAR.HHE. ML:1.8 0.0000278 0.42 AML other m 2023-08-21T12:34:59.75
IV.GUAR.HHN. ML:1.8 0.000029749999999999998 0.08 AML other m 2023-08-21T12:35:07.58
IV.FRON.EHN. ML:2.5 0.000034049999999999994 1.56 AML other m 2023-08-21T12:35:09.16
IV.FRON.EHE. ML:2.3 0.000019900000000000003 0.44 AML other m 2023-08-21T12:35:39.32
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