Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 29-07-2021 and time 00:11:15 (Italy) in region 4 km E Calabritto (AV)

A magnitude ML 1.0 earthquake occured in region: 4 km E Calabritto (AV), on

  • 28-07-2021 22:11:15 (UTC)
  • 29-07-2021 00:11:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.7760, 15.2620 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
Calabritto AV 4 2391 2391
Laviano SA 4 1438 3829
Valva SA 4 1643 5472
Caposele AV 5 3483 8955
Senerchia AV 6 842 9797
Colliano SA 6 3638 13435
Santomenna SA 6 443 13878
Castelnuovo di Conza SA 7 619 14497
Teora AV 9 1537 16034
Oliveto Citra SA 10 3802 19836
Conza della Campania AV 11 1373 21209
Sant'Andrea di Conza AV 12 1539 22748
Lioni AV 13 6201 28949
Palomonte SA 13 3985 32934
Pescopagano PZ 13 1910 34844
Contursi Terme SA 14 3394 38238
Castelgrande PZ 15 943 39181
Cairano AV 16 326 39507
Morra De Sanctis AV 17 1297 40804
Bagnoli Irpino AV 17 3217 44021
Acerno SA 18 2783 46804
San Gregorio Magno SA 18 4286 51090
Campagna SA 18 16703 67793
Andretta AV 18 1927 69720
Buccino SA 18 5047 74767
Sant'Angelo dei Lombardi AV 18 4250 79017
Muro Lucano PZ 19 5497 84514
Nusco AV 19 4203 88717

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NE of Battipaglia (50786 inhabitants)
42 Km E of Avellino (54857 inhabitants)
44 Km E of Salerno (135261 inhabitants)
48 Km E of Cava de' Tirreni (53659 inhabitants)
48 Km W of Potenza (67122 inhabitants)
56 Km SE of Benevento (60091 inhabitants)
62 Km E of Scafati (50787 inhabitants)
66 Km E of Castellammare di Stabia (66466 inhabitants)
75 Km E of Torre del Greco (86275 inhabitants)
77 Km E of Portici (55274 inhabitants)
77 Km SW of Cerignola (58396 inhabitants)
77 Km E of Acerra (59573 inhabitants)
77 Km E of Ercolano (53709 inhabitants)
80 Km S of Foggia (151991 inhabitants)
82 Km E of Afragola (65057 inhabitants)
83 Km E of Casoria (77642 inhabitants)
85 Km E of Caserta (76326 inhabitants)
85 Km E of Napoli (974074 inhabitants)
91 Km E of Giugliano in Campania (122974 inhabitants)
91 Km E of Marano di Napoli (59874 inhabitants)
91 Km E of Aversa (53047 inhabitants)
99 Km E of Pozzuoli (81661 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 1.0 2021-07-28
22:11:15		 40.7758 15.2623 10 2021-12-29
11:12:31		 Bollettino Sismico Italiano INGV 95660091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-28 22:11:15 ± 0.11
Latitude 40.7758 ± 0.0054
Longitude 15.2623 ± 0.0071
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 95660091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 662
Semi-minor axis of confidence ellipse (meter) 318
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 55
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.06655
Epicentral distance of station farthest from the epicenter (degree) 0.28778
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 95660091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-09 17:33:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CDRU.HHZ. 2021-07-28T22:11:26.30 0.3 undecidable manual S 174 31.9458 50 -0.02 83
IX.MNT3.EHZ.02 2021-07-28T22:11:23.50 0.3 undecidable manual S 288 22.5552 113 0 85
IX.SALI.HNE.01 2021-07-28T22:11:22.50 0.3 undecidable manual S 338 18.4704 118 0.28 81
IV.SNAL.HHZ. 2021-07-28T22:11:21.50 0.6 undecidable manual S 345 17.1717 119 -0.34 53
IV.CDRU.HHZ. 2021-07-28T22:11:21.31 0.3 undecidable manual P 174 31.9458 50 -0.23 80
IX.RDM3.HHZ.02 2021-07-28T22:11:21.49 0.3 undecidable manual P 64 25.4523 111 1.02 61
IX.CMP3.HNE.02 2021-07-28T22:11:20.12 0.1 undecidable manual P 228 20.5683 115 0.56 100
IX.COL3.HHZ.02 2021-07-28T22:11:20.10 0.3 undecidable manual S 150 11.3775 130 -0.08 85
IX.SALI.HNE.01 2021-07-28T22:11:19.14 0.3 undecidable manual P 338 18.4704 118 -0.03 85
IV.MCRV.HHZ. 2021-07-28T22:11:19.00 0.6 undecidable manual S 275 7.881 140 -0.33 54
IX.SCL3.EHZ.02 2021-07-28T22:11:19.67 0.3 undecidable manual P 113 22.755 113 -0.29 80
IX.CLT3.EHN.02 2021-07-28T22:11:19.14 0.3 undecidable manual P 40 18.4704 117 -0.04 85
IX.MNT3.EHZ.02 2021-07-28T22:11:19.80 0.3 undecidable manual P 288 22.5552 113 -0.11 83
IX.COL3.HHZ.02 2021-07-28T22:11:18.16 0.3 undecidable manual P 150 11.3775 130 0.16 84
IX.NSC3.EHZ.02 2021-07-28T22:11:18.17 0.3 undecidable manual P 304 14.1747 124 -0.26 82
IV.MRLC.HHE. 2021-07-28T22:11:18.89 0.3 undecidable manual P 96 19.1697 117 -0.41 78
IV.SNAL.HHZ. 2021-07-28T22:11:18.86 0.3 undecidable manual P 345 17.1717 119 -0.09 84
IX.LIO3.HHZ.02 2021-07-28T22:11:18.67 0.3 undecidable manual P 333 15.0738 122 0.08 85
IV.MCRV.HHZ. 2021-07-28T22:11:17.47 0.3 undecidable manual P 275 7.881 140 -0.03 86
IX.SNR3.EHN. 2021-07-28T22:11:17.52 0.3 undecidable manual P 233 7.3815 143 0.09 86
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCRV.HHE. ML:0.8 0.00009805 0.86 AML other m 2021-07-28T22:11:19.34
IV.MCRV.HHN. ML:1.3 0.00028000000000000003 0.62 AML other m 2021-07-28T22:11:20.04
IX.COL3.HHE.02 ML:1.4 0.0002705 0.34 AML other m 2021-07-28T22:11:21.20
IX.COL3.HHN.02 ML:1.4 0.00028149999999999996 1.6 AML other m 2021-07-28T22:11:21.08
IX.NSC3.EHE.02 ML:0.8 0.00006585 0.94 AML other m 2021-07-28T22:11:22.49
IX.NSC3.EHN.02 ML:0.9 0.00007825 0.16 AML other m 2021-07-28T22:11:23.03
IX.MNT3.EHE.02 ML:0.8 0.0000433 0.52 AML other m 2021-07-28T22:11:23.89
IX.MNT3.EHN.02 ML:1.1 0.0000852 0.12 AML other m 2021-07-28T22:11:25.23
IX.SCL3.EHE.02 ML:1.0 0.00007035 0.16 AML other m 2021-07-28T22:11:26.24
IV.CDRU.HHE. ML:0.4 0.000011449999999999999 0.82 AML other m 2021-07-28T22:11:26.78
IV.CDRU.HHN. ML:0.5 0.000016 0.5 AML other m 2021-07-28T22:11:26.34
IX.SCL3.EHN.02 ML:1.2 0.00010155 0.36 AML other m 2021-07-28T22:11:29.30
IV.SNAL.HHE. ML:0.8 0.00005295 0.58 AML other m 2021-07-28T22:11:29.40
IV.SNAL.HHN. ML:0.9 0.0000733 0.8 AML other m 2021-07-28T22:11:31.62
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