Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 31-08-2021 and time 21:04:32 (UTC) in region 3 km E Motta Montecorvino (FG)

A magnitude ML 0.6 earthquake occured in region: 3 km E Motta Montecorvino (FG), on

  • 31-08-2021 21:04:32 (UTC)
  • 31-08-2021 23:04:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.5170, 15.1530 at 18 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
Motta Montecorvino FG 3 730 730
Pietramontecorvino FG 4 2721 3451
Volturino FG 5 1743 5194
Castelnuovo della Daunia FG 8 1445 6639
Volturara Appula FG 9 430 7069
Casalvecchio di Puglia FG 10 1877 8946
Alberona FG 10 985 9931
Casalnuovo Monterotaro FG 12 1556 11487
San Marco la Catola FG 12 1012 12499
Biccari FG 14 2800 15299
Lucera FG 15 33724 49023
Celenza Valfortore FG 15 1598 50621
San Bartolomeo in Galdo BN 17 4867 55488
Carlantino FG 17 980 56468
Roseto Valfortore FG 17 1074 57542
Tufara CB 18 925 58467
Castelvetere in Val Fortore BN 19 1240 59707
Castelluccio Valmaggiore FG 20 1318 61025
Gambatesa CB 20 1464 62489
Baselice BN 20 2397 64886

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SW of San Severo (53905 inhabitants)
33 Km W of Foggia (151991 inhabitants)
53 Km NE of Benevento (60091 inhabitants)
65 Km W of Manfredonia (57279 inhabitants)
69 Km W of Cerignola (58396 inhabitants)
73 Km NE of Avellino (54857 inhabitants)
84 Km NE of Caserta (76326 inhabitants)
91 Km NE of Acerra (59573 inhabitants)
96 Km W of Barletta (94814 inhabitants)
97 Km NE of Afragola (65057 inhabitants)
98 Km NE of Cava de' Tirreni (53659 inhabitants)
99 Km NE of Salerno (135261 inhabitants)
99 Km NE of Casoria (77642 inhabitants)
100 Km NE of Aversa (53047 inhabitants)
100 Km NE of Scafati (50787 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 0.6 2021-08-31
21:04:32		 41.5173 15.1533 18 2021-12-29
11:12:52		 Bollettino Sismico Italiano INGV 97687641
Reviewed
Rev100 		ML 1.6 2021-08-31
21:04:33		 41.5193 15.1517 11 2021-08-31
21:12:20		 Sala Sismica INGV-Roma 94887661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-31 21:04:32 ± 0.11
Latitude 41.5173 ± 0.0063
Longitude 15.1533 ± 0.0072
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97687641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 628
Semi-minor axis of confidence ellipse (meter) 343
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 145
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41908
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 94887661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-31 21:12:20

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 97687641
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-22 11:28:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PSB1.HHE. 2021-08-31T21:04:47.50 0.3 undecidable manual S 221 43.3233 102 0.49 69
IV.APRC.HHE. 2021-08-31T21:04:46.41 0.3 undecidable manual S 50 41.8248 103 -0.22 73
OT.OT05.EHZ. 2021-08-31T21:04:46.65 0.6 undecidable manual S 67 40.4262 103 0.38 46
OT.OT04.EHE. 2021-08-31T21:04:46.18 1.0 undecidable manual S 58 41.9247 103 -0.47 23
OT.OT16.EHN. 2021-08-31T21:04:45.27 0.3 undecidable manual S 2 35.2425 106 0.37 71
IX.SCL3.EHZ.02 2021-08-31T21:04:44.16 3.0 negative manual P -0.33 0
IV.BSSO.HHZ. 2021-08-31T21:04:41.61 0.3 undecidable manual P 274 46.5201 101 0.11 73
IV.MELA.HHZ. 2021-08-31T21:04:41.50 0.3 undecidable manual S 354 21.0678 120 0.1 77
OT.OT03.EHE. 2021-08-31T21:04:41.25 1.0 undecidable manual P 62 46.5201 101 -0.24 24
IV.MOCO.HHZ. 2021-08-31T21:04:40.07 0.6 undecidable manual S 179 16.3725 129 -0.3 49
OT.OT04.EHE. 2021-08-31T21:04:40.42 1.0 undecidable manual P 58 41.9247 103 -0.38 23
IV.APRC.HHE. 2021-08-31T21:04:40.64 0.3 undecidable manual P 50 41.8248 103 -0.15 74
OT.OT06.EHZ. 2021-08-31T21:04:40.26 1.0 undecidable manual P 63 41.0256 103 -0.41 23
IV.GATE.HHN. 2021-08-31T21:04:40.92 0.3 undecidable manual S 269 20.1687 122 -0.29 74
IV.PSB1.HHE. 2021-08-31T21:04:40.83 0.6 undecidable manual P 221 43.3233 102 -0.18 48
OT.OT05.EHZ. 2021-08-31T21:04:40.89 0.6 undecidable manual P 67 40.4262 103 0.31 47
OT.OT11.EHZ. 2021-08-31T21:04:40.58 0.3 undecidable manual S 91 15.0738 132 0.46 72
OT.OT16.EHN. 2021-08-31T21:04:39.57 0.3 undecidable manual P 2 35.2425 106 -0.22 74
IV.GATE.HHN. 2021-08-31T21:04:38.08 0.6 undecidable manual P 269 20.1687 122 0.42 48
OT.OT11.EHZ. 2021-08-31T21:04:37.02 0.3 undecidable manual P 91 15.0738 132 -0.01 79
IV.MELA.HHZ. 2021-08-31T21:04:37.52 0.1 undecidable manual P 354 21.0678 120 -0.25 100
IV.MOCO.HHZ. 2021-08-31T21:04:36.97 0.3 undecidable manual P 179 16.3725 129 -0.21 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOCO.HHN. ML:0.4 0.00001431832 1.552 AML other m 2021-08-31T21:04:40.90
IV.MOCO.HHE. ML:0.7 0.000036367604999999994 0.5888 AML other m 2021-08-31T21:04:42.40
IV.MOCO.HNE. ML:0.8 0.000043937925 3.6352 AML other m 2021-08-31T21:04:39.19
IV.MOCO.HNN. ML:0.6 0.0000234326695 1.424 AML other m 2021-08-31T21:04:42.26
OT.OT05.EHN. ML:0.9 0.00002553428 4.2752 AML other m 2021-08-31T21:04:48.26
OT.OT05.EHE. ML:0.2 0.000003937887500000001 4.544 AML other m 2021-08-31T21:04:46.68
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