Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 19-09-2021 and time 16:55:33 (UTC) in region 3 km NW Altamura (BA)

A magnitude ML 1.1 earthquake occured in region: 3 km NW Altamura (BA), on

  • 19-09-2021 16:55:33 (UTC)
  • 19-09-2021 18:55:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.8530, 16.5350 at 33 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Altamura BA 3 70396 70396
Gravina in Puglia BA 11 43872 114268
Santeramo in Colle BA 19 26734 141002

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km NW of Altamura (70396 inhabitants)
21 Km N of Matera (60436 inhabitants)
32 Km SW of Bitonto (55540 inhabitants)
40 Km S of Molfetta (59874 inhabitants)
41 Km SW of Bari (326344 inhabitants)
44 Km S of Bisceglie (55422 inhabitants)
46 Km SE of Andria (100440 inhabitants)
48 Km S of Trani (56217 inhabitants)
56 Km SE of Barletta (94814 inhabitants)
66 Km E of Potenza (67122 inhabitants)
70 Km SE of Cerignola (58396 inhabitants)
72 Km NW of Taranto (201100 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
Reviewed
Rev100 		ML 1.1 2021-09-19
16:55:33		 40.8527 16.5352 33 2021-09-19
17:11:57		 Sala Sismica INGV-Roma 95638621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-19 16:55:33 ± 0.39
Latitude 40.8527 ± 0.0216
Longitude 16.5352 ± 0.0214
Depth (km) 33 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95638621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2694
Semi-minor axis of confidence ellipse (meter) 879
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 30
Circular confidence region, given by single value of horizontal uncertainty (meter) 2690.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.51081
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 95638621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-19 17:11:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PESA.HHZ. 2021-09-19T16:57:28.81 3.0 undecidable manual Sn -0.93 0
IV.PE3.EHZ. 2021-09-19T16:57:25.42 3.0 undecidable manual Sn -3.52 0
IV.MMUR.HNZ. 2021-09-19T16:57:21.71 3.0 undecidable manual Sg 3.28 0
IV.SBPO.HNZ. 2021-09-19T16:57:21.02 3.0 negative manual Pg 18.91 0
IV.CADC.EHZ. 2021-09-19T16:57:16.62 3.0 negative manual Pn 5.2 0
IV.NDIM.HHZ. 2021-09-19T16:57:11.09 3.0 positive manual Pg 10.5 0
ST.VARA.EHZ. 2021-09-19T16:57:11.43 3.0 undecidable manual Pn 1.01 0
IV.CAVE.HHZ. 2021-09-19T16:57:10.95 3.0 negative manual Pg 11.27 0
IV.CRND.HNZ. 2021-09-19T16:57:06.12 3.0 undecidable manual Pn 1.66 0
IV.FNVD.HHZ. 2021-09-19T16:57:04.62 3.0 undecidable manual Pg 12.55 0
IV.CSP1.EHZ. 2021-09-19T16:57:04.55 3.0 undecidable manual Sn -4.97 0
IV.CAGR.HHZ. 2021-09-19T16:56:53.34 3.0 undecidable manual Sn -9.32 0
IV.SFI.EHZ. 2021-09-19T16:56:52.24 3.0 positive manual Pg 7.85 0
IV.FIR.HHZ. 2021-09-19T16:56:45.56 3.0 positive manual Pn -1.94 0
IV.MURB.HNZ. 2021-09-19T16:56:43.32 3.0 undecidable manual Pg 9.94 0
IV.PE3.EHZ. 2021-09-19T16:56:42.17 3.0 undecidable manual Pg 4.3 0
AC.KBN.HHZ. 2021-09-19T16:56:34.35 3.0 negative manual Pg 5.97 0
CR.STON.BHZ. 2021-09-19T16:56:20.16 3.0 undecidable manual Pg 3.82 0
IV.SELL.HHZ. 2021-09-19T16:55:56.78 3.0 negative manual P -4.38 0
OT.MASS.HHE. 2021-09-19T16:55:51.98 0.3 undecidable manual S 115 56.6988 116 -0.68 58
IV.NOCI.HHZ. 2021-09-19T16:55:49.51 0.3 undecidable manual S 99 45.0216 122 -0.41 67
IX.SCL3.EHZ.02 2021-09-19T16:55:49.20 3.0 undecidable manual S -4.68 0
IV.MRVN.HHZ. 2021-09-19T16:55:47.44 0.3 undecidable manual S 309 36.6411 128 -0.65 65
GE.MATE.HHZ. 2021-09-19T16:55:45.96 0.3 undecidable manual S 148 26.6511 138 -0.18 73
OT.MASS.HHE. 2021-09-19T16:55:44.95 0.3 undecidable manual P 115 56.6988 116 0.3 70
IV.NOCI.HHZ. 2021-09-19T16:55:43.73 0.3 undecidable manual P 99 45.0216 122 0.66 65
IV.AMUR.HHZ. 2021-09-19T16:55:43.99 0.3 undecidable manual S 44 8.3805 165 0.26 76
IV.MRVN.HHZ. 2021-09-19T16:55:41.70 0.1 undecidable manual P 309 36.6411 128 -0.31 95
IV.MIGL.HHZ. 2021-09-19T16:55:41.29 0.1 undecidable manual P 196 28.6491 136 0.2 99
GE.MATE.HHZ. 2021-09-19T16:55:40.99 0.3 undecidable manual P 148 26.6511 138 0.1 76
IV.AMUR.HHZ. 2021-09-19T16:55:39.82 0.1 undecidable manual P 44 8.3805 165 0.33 100
IX.SCL3.EHZ.02 2021-09-19T16:55:38.29 3.0 undecidable manual P -6.18 0
IX.PGN3.HHZ.02 2021-09-19T16:55:36.08 3.0 undecidable manual P -2.91 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GE.MATE.HHE. ML:1.3 0.00007115 0.22 AML other m 2021-09-19T16:55:46.37
GE.MATE.HHN. ML:1.1 0.000044200000000000004 0.1 AML other m 2021-09-19T16:55:46.50
IV.AMUR.HHE. ML:0.8 0.000024824184999999998 0.192 AML other m 2021-09-19T16:55:44.76
IV.AMUR.HHN. ML:1.0 0.000046363064999999994 0.0768 AML other m 2021-09-19T16:55:44.13
IV.AMUR.HNE. ML:1.1 0.00004898780499999999 0.1152 AML other m 2021-09-19T16:55:44.13
IV.AMUR.HNN. ML:1.0 0.00004011549 0.1664 AML other m 2021-09-19T16:55:44.55
IV.MRVN.HHE. ML:1.0 0.00002319673 0.8576 AML other m 2021-09-19T16:55:48.06
IV.MRVN.HHN. ML:1.0 0.000029195375 0.064 AML other m 2021-09-19T16:55:47.79
IV.NOCI.HHE. ML:0.8 0.000015849416 0.0896 AML other m 2021-09-19T16:55:50.01
IV.NOCI.HHN. ML:1.2 0.00003611771 0.0896 AML other m 2021-09-19T16:55:49.78
IV.NOCI.HNE. ML:1.2 0.00003461132 0.0768 AML other m 2021-09-19T16:55:49.79
IV.NOCI.HNN. ML:1.2 0.000034220069 0.0896 AML other m 2021-09-19T16:55:49.78
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