Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 26-04-2021 and time 00:54:17 (Italy) in region 3 km W Anzano di Puglia (FG)

A magnitude ML 1.5 earthquake occured in region: 3 km W Anzano di Puglia (FG), on

  • 25-04-2021 22:54:17 (UTC)
  • 26-04-2021 00:54:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.1320, 15.2530 at 16 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
Anzano di Puglia FG 4 1284 1284
Monteleone di Puglia FG 4 1021 2305
Zungoli AV 4 1099 3404
Scampitella AV 6 1234 4638
Accadia FG 7 2376 7014
Vallesaccarda AV 7 1386 8400
Villanova del Battista AV 8 1690 10090
San Sossio Baronia AV 8 1643 11733
San Nicola Baronia AV 9 771 12504
Trevico AV 9 993 13497
Panni FG 10 804 14301
Flumeri AV 10 2963 17264
Vallata AV 11 2714 19978
Castel Baronia AV 11 1129 21107
Sant'Agata di Puglia FG 11 1959 23066
Carife AV 12 1408 24474
Savignano Irpino AV 13 1140 25614
Montaguto AV 13 423 26037
Ariano Irpino AV 14 22700 48737
Greci AV 15 691 49428
Bovino FG 15 3309 52737
Deliceto FG 15 3828 56565
Orsara di Puglia FG 17 2767 59332
Bisaccia AV 17 3831 63163
Sturno AV 17 3080 66243
Melito Irpino AV 17 1920 68163
Lacedonia AV 17 2340 70503
Grottaminarda AV 17 8137 78640
Rocchetta Sant'Antonio FG 18 1875 80515
Frigento AV 19 3780 84295
Montecalvo Irpino AV 20 3725 88020
Guardia Lombardi AV 20 1718 89738

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Benevento (60091 inhabitants)
44 Km SW of Foggia (151991 inhabitants)
45 Km NE of Avellino (54857 inhabitants)
57 Km W of Cerignola (58396 inhabitants)
62 Km NE of Battipaglia (50786 inhabitants)
63 Km S of San Severo (53905 inhabitants)
65 Km NE of Salerno (135261 inhabitants)
66 Km NE of Cava de' Tirreni (53659 inhabitants)
72 Km NW of Potenza (67122 inhabitants)
74 Km NE of Scafati (50787 inhabitants)
77 Km E of Acerra (59573 inhabitants)
77 Km E of Caserta (76326 inhabitants)
79 Km SW of Manfredonia (57279 inhabitants)
81 Km NE of Castellammare di Stabia (66466 inhabitants)
82 Km E of Afragola (65057 inhabitants)
83 Km E of Portici (55274 inhabitants)
84 Km E of Torre del Greco (86275 inhabitants)
84 Km E of Ercolano (53709 inhabitants)
85 Km E of Casoria (77642 inhabitants)
88 Km W of Andria (100440 inhabitants)
88 Km W of Barletta (94814 inhabitants)
89 Km E of Aversa (53047 inhabitants)
90 Km E of Napoli (974074 inhabitants)
91 Km E of Giugliano in Campania (122974 inhabitants)
93 Km E of Marano di Napoli (59874 inhabitants)
99 Km W of Trani (56217 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 1.5 2021-04-25
22:54:17		 41.132 15.2528 16 2021-07-12
16:55:08		 Bollettino Sismico Italiano INGV 89489461
Reviewed
Rev100 		ML 1.5 2021-04-25
22:54:17		 41.1317 15.2365 17 2021-04-25
23:03:18		 Sala Sismica INGV-Roma 89476851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-25 22:54:17 ± 0.11
Latitude 41.1320 ± 0.0063
Longitude 15.2528 ± 0.0119
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89489461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 831
Semi-minor axis of confidence ellipse (meter) 678
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 286
Circular confidence region, given by single value of horizontal uncertainty (meter) 830.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
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) 0.05666
Epicentral distance of station farthest from the epicenter (degree) 0.60165
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:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 89476851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-25 23:03:18

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 89489461
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-12 02:17:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OT.OT05.EHZ. 2021-04-25T22:54:38.10 0.3 undecidable manual S 26 65.2902 95 0.63 59
IV.MELA.HHZ. 2021-04-25T22:54:37.60 0.3 undecidable manual S 351 64.491 95 0.35 65
OT.OT07.EHE. 2021-04-25T22:54:29.29 0.3 undecidable manual P 35 66.7776 95 0.04 69
IV.MELA.HHZ. 2021-04-25T22:54:28.38 0.3 undecidable manual P 351 64.491 95 -0.53 63
IX.NSC3.HHZ.02 2021-04-25T22:54:28.50 0.6 undecidable manual S 199 33.4443 103 -0.56 43
OT.OT05.EHZ. 2021-04-25T22:54:28.94 0.1 undecidable manual P 26 65.2902 95 -0.1 92
IX.CLT3.HNZ. 2021-04-25T22:54:27.71 0.3 undecidable manual S 153 28.3494 107 -0.04 74
IV.MRB1.HHZ. 2021-04-25T22:54:27.00 0.6 undecidable manual S 268 23.8539 112 0.4 47
IX.SALI.HNZ.01 2021-04-25T22:54:27.04 0.3 undecidable manual S 195 23.2545 112 0.59 66
IX.LIO3.HHZ.02 2021-04-25T22:54:27.74 0.3 undecidable manual S 193 26.751 108 0.4 69
IV.SNAL.HHZ. 2021-04-25T22:54:26.75 0.3 undecidable manual S 189 23.2545 112 0.3 71
IX.RDM3.HHZ.02 2021-04-25T22:54:25.78 0.3 undecidable manual P 140 37.0296 101 1.06 52
IV.PSB1.HHZ. 2021-04-25T22:54:24.62 0.3 undecidable manual P 286 38.2284 101 -0.29 69
IV.VULT.HHN. 2021-04-25T22:54:24.30 0.3 undecidable manual P 123 36.2415 102 -0.3 70
IX.MNT3.HHE. 2021-04-25T22:54:24.58 0.3 undecidable manual P 212 38.628 101 -0.39 68
IX.CLT3.HNZ. 2021-04-25T22:54:24.05 0.3 undecidable manual P 153 28.3494 107 0.62 64
IV.CAFE.HHZ. 2021-04-25T22:54:24.26 0.3 undecidable manual S 187 11.5773 136 0.39 72
IV.SGTA.HHZ. 2021-04-25T22:54:23.21 0.3 undecidable manual S 88 9.3795 143 -0.27 72
IX.NSC3.HHZ.02 2021-04-25T22:54:23.94 0.3 undecidable manual P 199 33.4443 103 -0.25 71
IX.SSB3.HHZ.02 2021-04-25T22:54:22.93 0.3 undecidable manual S 198 6.2937 154 -0.12 74
IX.SALI.HNZ.01 2021-04-25T22:54:22.50 0.3 undecidable manual P 195 23.2545 112 -0.17 73
IX.LIO3.HHZ.02 2021-04-25T22:54:22.89 0.3 undecidable manual P 193 26.751 108 -0.3 71
IV.MRB1.HHZ. 2021-04-25T22:54:22.85 0.3 undecidable manual P 268 23.8539 112 0.09 74
IV.SNAL.HHZ. 2021-04-25T22:54:22.45 0.1 positive manual P 189 23.2545 112 -0.22 96
IV.CAFE.HHZ. 2021-04-25T22:54:21.14 0.3 undecidable manual P 187 11.5773 136 -0.04 76
IV.BIOG.HNZ. 2021-04-25T22:54:21.29 0.3 undecidable manual P 307 12.5763 134 0 76
IX.SSB3.HHZ.02 2021-04-25T22:54:20.39 0.1 positive manual P 198 6.2937 154 -0.32 96
IV.SGTA.HHZ. 2021-04-25T22:54:20.83 0.1 positive manual P 88 9.3795 143 -0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SGTA.HHN. ML:1.2 0.00016549999999999998 0.6 AML other m 2021-04-25T22:54:24.58
IV.CAFE.HHN. ML:1.6 0.0003415 0.9 AML other m 2021-04-25T22:54:24.75
IV.CAFE.HHE. ML:1.6 0.0003305 0.62 AML other m 2021-04-25T22:54:25.56
IV.SNAL.HHN. ML:1.7 0.0002895 0.18 AML other m 2021-04-25T22:54:27.26
IV.SNAL.HNN. ML:1.7 0.000285 0.16 AML other m 2021-04-25T22:54:27.26
IV.SNAL.HHE. ML:1.6 0.0002105 0.48 AML other m 2021-04-25T22:54:27.34
IV.SNAL.HNE. ML:1.6 0.00020500000000000002 0.48 AML other m 2021-04-25T22:54:27.34
IV.MRB1.HHN. ML:1.5 0.00016 1.62 AML other m 2021-04-25T22:54:28.86
IV.MRB1.HHE. ML:1.3 0.0001104 0.46 AML other m 2021-04-25T22:54:28.30
IV.SGTA.HHE. ML:1.4 0.0002565 0.32 AML other m 2021-04-25T22:54:29.79
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