Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 11-05-2021 and time 03:06:58 (Italy) in region 4 km W Volturara Appula (FG)

A magnitude ML 1.6 earthquake occured in region: 4 km W Volturara Appula (FG), on

  • 11-05-2021 01:06:58 (UTC)
  • 11-05-2021 03:06:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.4910, 15.0060 at 23 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
Volturara Appula FG 4 430 430
San Marco la Catola FG 4 1012 1442
Tufara CB 5 925 2367
Castelvetere in Val Fortore BN 8 1240 3607
Gambatesa CB 8 1464 5071
Celenza Valfortore FG 8 1598 6669
San Bartolomeo in Galdo BN 9 4867 11536
Motta Montecorvino FG 9 730 12266
Volturino FG 10 1743 14009
Baselice BN 11 2397 16406
Carlantino FG 12 980 17386
Alberona FG 12 985 18371
Pietramontecorvino FG 12 2721 21092
Macchia Valfortore CB 14 576 21668
Castelnuovo della Daunia FG 14 1445 23113
Riccia CB 14 5262 28375
Casalvecchio di Puglia FG 15 1877 30252
Pietracatella CB 15 1375 31627
Roseto Valfortore FG 15 1074 32701
Foiano di Val Fortore BN 16 1410 34111
Casalnuovo Monterotaro FG 16 1556 35667
Jelsi CB 18 1781 37448
Montefalcone di Val Fortore BN 18 1525 38973
Sant'Elia a Pianisi CB 18 1818 40791
Biccari FG 19 2800 43591
Castelpagano BN 19 1483 45074
Colletorto CB 20 1938 47012

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SW of San Severo (53905 inhabitants)
44 Km NE of Benevento (60091 inhabitants)
45 Km W of Foggia (151991 inhabitants)
66 Km N of Avellino (54857 inhabitants)
73 Km NE of Caserta (76326 inhabitants)
78 Km W of Manfredonia (57279 inhabitants)
79 Km W of Cerignola (58396 inhabitants)
81 Km NE of Acerra (59573 inhabitants)
86 Km NE of Afragola (65057 inhabitants)
88 Km NE of Aversa (53047 inhabitants)
88 Km NE of Casoria (77642 inhabitants)
91 Km N of Cava de' Tirreni (53659 inhabitants)
92 Km NE of Scafati (50787 inhabitants)
92 Km NE of Giugliano in Campania (122974 inhabitants)
92 Km NE of Portici (55274 inhabitants)
93 Km N of Salerno (135261 inhabitants)
94 Km NE of Ercolano (53709 inhabitants)
95 Km NE of Marano di Napoli (59874 inhabitants)
95 Km NE of Torre del Greco (86275 inhabitants)
96 Km NE of Napoli (974074 inhabitants)
98 Km N of Battipaglia (50786 inhabitants)
99 Km NE 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 1.6 2021-05-11
01:06:58		 41.4908 15.0063 23 2021-12-29
11:12:06		 Bollettino Sismico Italiano INGV 91761531
Reviewed
Rev100 		ML 1.6 2021-05-11
01:06:58		 41.5038 14.9923 19 2021-05-11
01:27:13		 Sala Sismica INGV-Roma 89976821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-11 01:06:58 ± 0.12
Latitude 41.4908 ± 0.0054
Longitude 15.0063 ± 0.0060
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91761531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 587
Semi-minor axis of confidence ellipse (meter) 295
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 147
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.07554
Epicentral distance of station farthest from the epicenter (degree) 0.95868
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 89976821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-11 01:27:13

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 43
Type of magnitude ML
Reference to an origin 91761531
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-08-20 19:33:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OT.OT12.EHZ. 2021-05-11T01:07:22.03 0.6 undecidable manual S 78 76.4679 100 0.58 39
OT.OT07.EHE. 2021-05-11T01:07:17.08 0.3 undecidable manual S 76 60.8946 103 -0.32 65
OT.OT13.EHZ. 2021-05-11T01:07:16.30 0.6 undecidable manual P 66 106.4157 97 0.06 42
IV.SGG.HHZ. 2021-05-11T01:07:15.10 0.3 undecidable manual S 258 53.4021 106 -0.36 65
IT.GLNS.HNZ. 2021-05-11T01:07:14.42 0.3 undecidable manual S 351 47.3193 108 0.53 64
OT.OT04.EHE. 2021-05-11T01:07:14.63 0.6 undecidable manual S 62 54.0015 105 -0.97 35
IV.APRC.HHZ. 2021-05-11T01:07:14.84 0.6 undecidable manual S 56 53.4021 106 -0.62 40
IV.TRIV.HHZ. 2021-05-11T01:07:14.30 0.6 undecidable manual S 309 48.618 107 0.06 47
OT.OT06.EHZ. 2021-05-11T01:07:14.51 0.6 undecidable manual S 66 53.3022 106 -0.93 35
OT.OT14.EHZ. 2021-05-11T01:07:13.79 0.6 undecidable manual P 59 87.1461 99 0.49 40
IV.MRB1.HHZ. 2021-05-11T01:07:12.43 0.3 undecidable manual S 184 40.9257 111 0.13 70
OT.OT12.EHZ. 2021-05-11T01:07:12.62 0.3 undecidable manual P 78 76.4679 100 0.94 50
IV.PTRJ.HNN. 2021-05-11T01:07:12.14 0.6 undecidable manual S 251 42.1245 111 -0.45 43
IV.MSAG.HHZ. 2021-05-11T01:07:12.69 0.3 undecidable manual P 72 78.8655 100 0.65 57
IV.PIGN.HHZ. 2021-05-11T01:07:12.04 0.6 undecidable manual P 245 75.9684 100 0.43 41
OT.OT16.EHZ. 2021-05-11T01:07:11.85 0.3 undecidable manual S 20 40.4262 112 -0.33 67
IT.LRNO.HNZ. 2021-05-11T01:07:11.46 0.3 undecidable manual S 348 35.742 115 0.44 66
IV.PSB1.HHZ. 2021-05-11T01:07:10.80 0.6 undecidable manual S 209 33.8439 116 0.24 46
IV.SGRT.HHZ. 2021-05-11T01:07:10.87 0.3 undecidable manual P 64 67.7766 102 0.5 62
IV.BSSO.HHZ. 2021-05-11T01:07:10.60 0.6 undecidable manual S 280 34.8429 115 -0.19 46
OT.OT03.EHE. 2021-05-11T01:07:09.37 0.6 undecidable manual P 65 58.6968 104 0.36 43
OT.OT07.EHE. 2021-05-11T01:07:09.73 0.3 undecidable manual P 76 60.8946 103 0.4 64
IV.SACR.HHZ. 2021-05-11T01:07:09.16 0.3 undecidable manual S 248 27.0507 123 0.17 71
OT.OT11.EHZ. 2021-05-11T01:07:09.41 0.3 undecidable manual S 84 27.4503 123 0.34 46
IV.MELA.HHZ. 2021-05-11T01:07:08.67 0.3 undecidable manual S 23 25.8519 124 -0.05 73
IV.CIGN.HHZ. 2021-05-11T01:07:07.60 0.6 undecidable manual S 335 19.9689 133 0.11 49
IV.VITU.HHZ. 2021-05-11T01:07:07.07 0.3 undecidable manual P 223 46.3203 108 -0.1 70
IT.GLNS.HNZ. 2021-05-11T01:07:07.19 0.3 undecidable manual P 351 47.3193 108 -0.12 69
OT.OT04.EHE. 2021-05-11T01:07:07.56 0.6 undecidable manual P 62 54.0015 105 -0.74 38
IV.SGG.HHZ. 2021-05-11T01:07:07.92 0.3 undecidable manual P 258 53.4021 106 -0.3 66
IV.APRC.HHZ. 2021-05-11T01:07:07.87 0.3 undecidable manual P 56 53.4021 106 -0.35 65
OT.OT06.EHZ. 2021-05-11T01:07:07.58 0.3 undecidable manual P 66 53.3022 106 -0.62 40
IV.TRIV.HHZ. 2021-05-11T01:07:07.73 0.6 undecidable manual P 309 48.618 107 0.22 45
IV.GATE.HNZ. 2021-05-11T01:07:06.09 0.6 undecidable manual S 287 8.3805 157 0.41 47
IV.MRB1.HHZ. 2021-05-11T01:07:06.71 0.3 undecidable manual P 184 40.9257 111 0.32 67
OT.OT05.EHZ. 2021-05-11T01:07:06.92 0.6 undecidable manual P 69 52.9026 106 -1.21 31
IV.PTRJ.HNN. 2021-05-11T01:07:06.11 0.3 undecidable manual P 251 42.1245 111 -0.45 65
IT.LRNO.HNZ. 2021-05-11T01:07:05.60 0.6 undecidable manual P 348 35.742 115 -0.05 48
IV.PSB1.HHZ. 2021-05-11T01:07:05.46 0.1 positive manual P 209 33.8439 116 0.08 95
OT.OT16.EHZ. 2021-05-11T01:07:05.86 0.1 undecidable manual P 20 40.4262 112 -0.46 65
IV.BSSO.HHZ. 2021-05-11T01:07:05.61 0.1 undecidable manual P 280 34.8429 115 0.09 95
IV.MELA.HHZ. 2021-05-11T01:07:04.19 0.1 undecidable manual P 23 25.8519 124 -0.13 96
IV.SACR.HHZ. 2021-05-11T01:07:04.38 0.1 undecidable manual P 248 27.0507 123 -0.1 96
OT.OT11.EHZ. 2021-05-11T01:07:04.59 0.1 undecidable manual P 84 27.4503 123 0.06 97
IV.CIGN.HHZ. 2021-05-11T01:07:03.66 0.3 undecidable manual P 335 19.9689 133 0.05 74
IV.GATE.HNZ. 2021-05-11T01:07:02.64 0.1 undecidable manual P 287 8.3805 157 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MELA.HHE. ML:1.7 0.00022449999999999998 1.56 AML other m 2021-05-11T01:07:08.95
IV.MELA.HNE. ML:1.7 0.00020335805000000002 0.2496 AML other m 2021-05-11T01:07:08.96
IV.MELA.HHN. ML:1.9 0.0003435 1.54 AML other m 2021-05-11T01:07:09.14
IV.MELA.HNN. ML:1.9 0.0003162586 0.4496 AML other m 2021-05-11T01:07:09.14
IV.SACR.HNE. ML:1.3 0.000090703935 0.26 AML other m 2021-05-11T01:07:09.41
OT.OT11.EHE. ML:1.8 0.0002410147 0.14 AML other m 2021-05-11T01:07:09.54
OT.OT11.EHN. ML:1.9 0.00031672405 0.24 AML other m 2021-05-11T01:07:09.64
IV.SACR.HHN. ML:1.4 0.0001205 0.84 AML other m 2021-05-11T01:07:09.83
IV.SACR.HNN. ML:1.4 0.0001090154 0.24 AML other m 2021-05-11T01:07:09.71
IV.SACR.HHE. ML:1.3 0.00009217341 0.22 AML other m 2021-05-11T01:07:10.01
IV.PSB1.HHE. ML:1.2 0.00005064225 0.22 AML other m 2021-05-11T01:07:11.01
IV.PSB1.HNE. ML:1.2 0.00005803380000000001 0.28 AML other m 2021-05-11T01:07:11.49
IV.BSSO.HHN. ML:1.4 0.00007812009 0.38 AML other m 2021-05-11T01:07:11.60
IV.BSSO.HNN. ML:1.4 0.000081179105 0.38 AML other m 2021-05-11T01:07:11.61
IV.VITU.HNN. ML:1.7 0.0001240986 0.7 AML other m 2021-05-11T01:07:13.61
IV.BSSO.HHE. ML:1.3 0.0000774 0.28 AML other m 2021-05-11T01:07:14.49
IV.BSSO.HNE. ML:1.3 0.00007496075 0.3 AML other m 2021-05-11T01:07:14.50
IV.PSB1.HHN. ML:1.0 0.000034473335 0.52 AML other m 2021-05-11T01:07:15.09
OT.OT16.EHN. ML:1.6 0.00011345652 0.32 AML other m 2021-05-11T01:07:15.60
IV.APRC.HHE. ML:1.8 0.000153586 0.18 AML other m 2021-05-11T01:07:16.37
IV.APRC.HNE. ML:1.9 0.0001584285 0.18 AML other m 2021-05-11T01:07:16.46
OT.OT05.EHE. ML:1.7 0.00011740000000000001 1 AML other m 2021-05-11T01:07:16.54
OT.OT05.EHN. ML:1.5 0.000075498535 0.18 AML other m 2021-05-11T01:07:16.68
OT.OT16.EHE. ML:1.7 0.00015972985 0.5 AML other m 2021-05-11T01:07:17.54
IV.VITU.HHE. ML:1.4 0.000061508935 0.3 AML other m 2021-05-11T01:07:17.72
IV.APRC.HHN. ML:1.9 0.00016887545 0.34 AML other m 2021-05-11T01:07:18.75
IV.VITU.HNE. ML:1.9 0.00020534459999999998 1.2 AML other m 2021-05-11T01:07:19.59
IV.VITU.HHN. ML:1.5 0.0000898 0.28 AML other m 2021-05-11T01:07:21.44
IV.SGG.HHN. ML:1.3 0.00004485 0.34 AML other m 2021-05-11T01:07:21.57
IV.TRIV.HHE. ML:0.9 0.000019254914000000003 0.34 AML other m 2021-05-11T01:07:22.29
IV.SGRT.HHE. ML:1.7 0.00009225130500000001 0.52 AML other m 2021-05-11T01:07:22.32
IV.SGG.HHE. ML:1.3 0.00004165 0.82 AML other m 2021-05-11T01:07:22.55
IV.SGRT.HHN. ML:1.8 0.0001009 1.16 AML other m 2021-05-11T01:07:23.61
OT.OT12.EHE. ML:1.6 0.000057900000000000005 0.28 AML other m 2021-05-11T01:07:24.52
OT.OT12.EHN. ML:1.8 0.000081499835 0.18 AML other m 2021-05-11T01:07:25.44
IV.MSAG.HHN. ML:2.0 0.00013900000000000002 0.2 AML other m 2021-05-11T01:07:25.58
IV.MSAG.HNN. ML:2.4 0.0003255 0.22 AML other m 2021-05-11T01:07:25.59
IV.MSAG.HNE. ML:2.1 0.00016800000000000002 0.28 AML other m 2021-05-11T01:07:25.48
IV.TRIV.HNE. ML:1.2 0.00003974858 0.8 AML other m 2021-05-11T01:07:26.16
IV.MSAG.HHE. ML:1.7 0.00006379999999999999 0.42 AML other m 2021-05-11T01:07:26.49
IV.PIGN.HHE. ML:1.3 0.00003105 0.28 AML other m 2021-05-11T01:07:26.98
IV.TRIV.HNN. ML:1.3 0.000045166305 0.98 AML other m 2021-05-11T01:07:28.61
IV.PIGN.HHN. ML:1.2 0.000025849999999999998 1.66 AML other m 2021-05-11T01:07:29.10
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