Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 19-05-2021 and time 00:53:11 (Italy) in region 3 km E San Pietro Infine (CE)

A magnitude ML 1.7 earthquake occured in region: 3 km E San Pietro Infine (CE), on

  • 18-05-2021 22:53:11 (UTC)
  • 19-05-2021 00:53:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.4440, 13.9980 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
San Pietro Infine CE 3 944 944
Mignano Monte Lungo CE 4 3250 4194
San Vittore del Lazio FR 6 2636 6830
Conca Casale IS 6 200 7030
Venafro IS 6 11280 18310
Sesto Campano IS 7 2388 20698
Cervaro FR 9 8109 28807
Viticuso FR 9 353 29160
Pozzilli IS 9 2380 31540
Rocca d'Evandro CE 10 3283 34823
Presenzano CE 10 1766 36589
Galluccio CE 12 2154 38743
Acquafondata FR 12 263 39006
Tora e Piccilli CE 12 910 39916
Sant'Ambrogio sul Garigliano FR 12 966 40882
Conca della Campania CE 12 1239 42121
Filignano IS 12 648 42769
Capriati a Volturno CE 13 1541 44310
Ciorlano CE 13 426 44736
Vallerotonda FR 14 1581 46317
Marzano Appio CE 15 2226 48543
Sant'Apollinare FR 15 1919 50462
Cassino FR 15 36142 86604
Sant'Elia Fiumerapido FR 15 6166 92770
Sant'Andrea del Garigliano FR 16 1505 94275
Fontegreca CE 16 811 95086
Pratella CE 16 1565 96651
Vairano Patenora CE 17 6594 103245
Caianello CE 17 1824 105069
Montaquila IS 17 2456 107525
Prata Sannita CE 17 1502 109027
Monteroduni IS 17 2264 111291
Roccamonfina CE 17 3511 114802
Pignataro Interamna FR 17 2595 117397
Vallemaio FR 18 937 118334
Ailano CE 18 1369 119703
Gallo Matese CE 19 579 120282
Pietravairano CE 19 2984 123266
Colli a Volturno IS 20 1349 124615
Macchia d'Isernia IS 20 1035 125650
San Giorgio a Liri FR 20 3164 128814
Scapoli IS 20 680 129494
San Biagio Saracinisco FR 20 349 129843

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km NW of Caserta (76326 inhabitants)
55 Km NW of Aversa (53047 inhabitants)
60 Km N of Giugliano in Campania (122974 inhabitants)
63 Km N of Marano di Napoli (59874 inhabitants)
64 Km NW of Afragola (65057 inhabitants)
64 Km NW of Acerra (59573 inhabitants)
65 Km NW of Casoria (77642 inhabitants)
67 Km N of Pozzuoli (81661 inhabitants)
70 Km NW of Napoli (974074 inhabitants)
74 Km W of Benevento (60091 inhabitants)
75 Km NW of Portici (55274 inhabitants)
76 Km NW of Ercolano (53709 inhabitants)
79 Km NW of Torre del Greco (86275 inhabitants)
89 Km NW of Avellino (54857 inhabitants)
89 Km NW of Scafati (50787 inhabitants)
91 Km E of Latina (125985 inhabitants)
93 Km NW of Castellammare di Stabia (66466 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 1.7 2021-05-18
22:53:11		 41.4435 13.9983 10 2021-05-19
14:12:13		 Bollettino Sismico Italiano INGV 90257141
Reviewed
Rev100 		ML 2.4 2021-05-18
22:53:06		 41.202 13.9293 69 2021-05-18
22:57:57		 Sala Sismica INGV-Roma 90240531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-18 22:53:11 ± 0.14
Latitude 41.4435 ± 0.0090
Longitude 13.9983 ± 0.0096
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90257141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 989
Semi-minor axis of confidence ellipse (meter) 518
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 18
Circular confidence region, given by single value of horizontal uncertainty (meter) 990.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.14659
Epicentral distance of station farthest from the epicenter (degree) 0.78061
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 90240531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-18 22:57:57

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 90257141
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-19 14:10:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VENT.EHE. 2021-05-18T22:53:26.80 0.3 undecidable manual P 214 86.6466 50 0.48 62
IV.TRIV.HHN. 2021-05-18T22:53:23.13 0.3 undecidable manual P 52 58.0974 50 1.21 48
IV.SGG.HHZ. 2021-05-18T22:53:23.20 0.6 undecidable manual S 101 32.3454 50 0.49 46
IV.GIUL.HHZ. 2021-05-18T22:53:23.32 0.3 undecidable manual P 282 63.0924 50 0.63 61
IV.INTR.HHZ. 2021-05-18T22:53:22.78 0.3 undecidable manual P 353 63.492 50 0.03 71
IV.PIGN.HHZ. 2021-05-18T22:53:22.30 0.6 undecidable manual S 151 30.9468 50 -0.06 50
IV.VITU.HHZ. 2021-05-18T22:53:22.83 0.3 undecidable manual P 119 59.9955 50 0.61 62
IV.MIDA.HHZ. 2021-05-18T22:53:22.60 0.3 undecidable manual S 44 30.5472 50 0.35 71
IV.VVLD.HHZ. 2021-05-18T22:53:21.06 0.1 undecidable manual P 327 56.5989 50 -0.62 83
IV.BSSO.HHE. 2021-05-18T22:53:20.76 0.3 undecidable manual P 77 50.7159 50 -0.03 73
IV.VAGA.HHZ. 2021-05-18T22:53:19.59 0.1 undecidable manual S 99 19.869 117 0.43 95
IV.LRP.EHN. 2021-05-18T22:53:19.43 0.3 undecidable manual P 304 40.9257 50 0.15 73
IV.CERA.HHZ. 2021-05-18T22:53:18.22 0.3 undecidable manual S 5 17.1717 121 -0.14 76
IV.POFI.HNE. 2021-05-18T22:53:18.61 0.3 undecidable manual P 322 38.5281 50 -0.3 71
IV.LIK.EHN.01 2021-05-18T22:53:18.40 0.6 undecidable manual P 280 37.0296 50 -0.27 47
IV.MCI.EHZ. 2021-05-18T22:53:18.92 0.3 undecidable manual S 289 16.2726 122 0.83 61
IV.MIDA.HHZ. 2021-05-18T22:53:17.38 0.3 undecidable manual P 44 30.5472 50 -0.29 72
IV.SGG.HHZ. 2021-05-18T22:53:17.49 0.1 undecidable manual P 101 32.3454 50 -0.45 92
IV.RNI2.HNE. 2021-05-18T22:53:17.81 0.6 undecidable manual P 24 31.5462 50 -0.01 51
IV.PIGN.HHZ. 2021-05-18T22:53:16.97 0.1 undecidable manual P 151 30.9468 50 -0.77 82
IV.CERA.HHZ. 2021-05-18T22:53:15.24 0.1 undecidable manual P 5 17.1717 121 -0.19 100
IV.VAGA.HHZ. 2021-05-18T22:53:15.14 0.3 undecidable manual P 99 19.869 117 -0.76 63
IV.MCI.EHZ. 2021-05-18T22:53:14.95 0.3 undecidable manual P 289 16.2726 122 -0.32 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERA.HHN. ML:2.0 0.0009245 0.36 AML other m 2021-05-18T22:53:22.07
IV.CERA.HNN. ML:2.0 0.000887 0.36 AML other m 2021-05-18T22:53:22.26
IV.CERA.HHE. ML:1.9 0.0006895 0.98 AML other m 2021-05-18T22:53:22.43
IV.VAGA.HNN. ML:1.9 0.000598 1.2 AML other m 2021-05-18T22:53:22.32
IV.CERA.HNE. ML:1.9 0.0006765000000000001 0.98 AML other m 2021-05-18T22:53:22.43
IV.VAGA.HHN. ML:1.9 0.0006314999999999999 1.2 AML other m 2021-05-18T22:53:22.32
IV.VAGA.HNE. ML:1.6 0.0003255 0.8 AML other m 2021-05-18T22:53:23.30
IV.VAGA.HHE. ML:1.7 0.000359 0.78 AML other m 2021-05-18T22:53:23.30
IV.PIGN.HHE. ML:1.4 0.000129 0.5 AML other m 2021-05-18T22:53:25.53
IV.PIGN.HHN. ML:1.4 0.00011399999999999999 0.36 AML other m 2021-05-18T22:53:27.29
IV.SGG.HHE. ML:1.9 0.000325 0.58 AML other m 2021-05-18T22:53:31.61
IV.SGG.HHN. ML:1.6 0.00016549999999999998 1 AML other m 2021-05-18T22:53:31.93
IV.VVLD.HHE. ML:1.4 0.00005995 0.94 AML other m 2021-05-18T22:53:34.30
IV.VVLD.HHN. ML:1.4 0.00005345 0.64 AML other m 2021-05-18T22:53:34.85
IV.INTR.HHN. ML:1.6 0.00008565000000000001 0.66 AML other m 2021-05-18T22:53:37.97
IV.INTR.HHE. ML:1.7 0.00008824999999999999 1.34 AML other m 2021-05-18T22:53:38.96
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