Earthquake with magnitude of ML 1.1 on date 31-03-2021 and time 13:53:55 (Italy) in region 3 km W San Mauro Forte (MT)

A magnitude ML 1.1 earthquake occured in region: 3 km W San Mauro Forte (MT), on

  • 31-03-2021 11:53:55 (UTC)
  • 31-03-2021 13:53:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.485, 16.222 at 19 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
San Mauro Forte MT 3 1552 1552
Accettura MT 6 1856 3408
Oliveto Lucano MT 7 450 3858
Garaguso MT 7 1073 4931
Stigliano MT 9 4361 9292
Salandra MT 10 2829 12121
Cirigliano MT 11 375 12496
Calciano MT 12 777 13273
Gorgoglione MT 12 989 14262
Pietrapertosa PZ 14 1032 15294
Campomaggiore PZ 16 811 16105
Castelmezzano PZ 16 800 16905
Tricarico MT 17 5388 22293
Guardia Perticara PZ 17 552 22845
Grassano MT 17 5189 28034
Grottole MT 19 2208 30242
Corleto Perticara PZ 19 2511 32753
Aliano MT 19 1008 33761
Albano di Lucania PZ 19 1435 35196

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SW of Matera (60436 inhabitants)
39 Km E of Potenza (67122 inhabitants)
47 Km SW of Altamura (70396 inhabitants)
80 Km SW of Bitonto (55540 inhabitants)
83 Km S of Andria (100440 inhabitants)
86 Km W of Taranto (201100 inhabitants)
86 Km SW of Molfetta (59874 inhabitants)
88 Km S of Bisceglie (55422 inhabitants)
89 Km S of Trani (56217 inhabitants)
90 Km SW of Bari (326344 inhabitants)
91 Km S of Cerignola (58396 inhabitants)
93 Km S of Barletta (94814 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 1.1 2021-03-31
11:53:55
40.4853 16.2222 19 2021-07-12
16:55:12
Bollettino Sismico Italiano INGV 90291491
Reviewed
Rev100
ML 1.2 2021-03-31
11:53:54
40.4988 16.2097 23 2021-03-31
12:08:16
Sala Sismica INGV-Roma 88642301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-31 11:53:55 ± 0.22
Latitude 40.4853 ± 0.0072
Longitude 16.2222 ± 0.0118
Depth (km) 19 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90291491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 979
Semi-minor axis of confidence ellipse (meter) 59
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 290
Circular confidence region, given by single value of horizontal uncertainty (meter) 980
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.1277
Epicentral distance of station farthest from the epicenter (degree) 0.40649
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 90291491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-20 10:25:01

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 88642301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-31 12:08:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SIRI.HHZ. 2021-03-31T11:54:09.60 3.0 undecidable manual S 222 0.4065 103 -0.44 0
IV.ACER.HNZ. 2021-03-31T11:54:09.48 0.6 undecidable manual S 325 0.3678 105 0.53 44
IV.MCEL.HHZ. 2021-03-31T11:54:08.48 0.3 undecidable manual S 243 0.3579 106 -0.17 71
IX.PGN3.HNE.02 2021-03-31T11:54:08.68 0.6 undecidable manual S 285 0.3345 107 0.68 42
IV.SCHR.EHZ. 2021-03-31T11:54:07.66 0.3 undecidable manual S 201 0.3067 109 0.44 68
IV.MIGL.HHZ. 2021-03-31T11:54:04.64 0.3 undecidable manual S 54 0.2041 121 0.19 73
IV.SIRI.HHZ. 2021-03-31T11:54:04.28 0.3 undecidable manual P 222 0.4065 103 0.47 67
IX.PGN3.HNE.02 2021-03-31T11:54:02.51 0.1 undecidable manual P 285 0.3345 107 -0.12 96
IV.SCHR.EHZ. 2021-03-31T11:54:02.16 0.3 undecidable manual P 201 0.3067 109 -0.02 74
IV.ACER.HNZ. 2021-03-31T11:54:02.91 0.1 undecidable manual P 325 0.3678 105 -0.27 93
IV.PTRP.HHZ. 2021-03-31T11:54:02.75 0.6 undecidable manual S 286 0.1277 137 0.08 51
IV.MCEL.HHZ. 2021-03-31T11:54:02.48 0.1 undecidable manual P 243 0.3579 106 -0.53 87
IV.MIGL.HHZ. 2021-03-31T11:54:00.35 0.1 undecidable manual P 54 0.2041 121 -0.23 97
IV.PTRP.HHZ. 2021-03-31T11:53:59.44 0.1 undecidable manual P 286 0.1277 137 -0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PTRP.HHE. ML:0.9 4.7924015E-5 1.5968 AML other m 2021-03-31T11:54:03.93
IV.PTRP.HHN. ML:0.9 5.1200675E-5 0.4416 AML other m 2021-03-31T11:54:04.39
IV.MIGL.HHN. ML:1.6 0.00020177835 0.7392 AML other m 2021-03-31T11:54:05.02
IV.MIGL.HHE. ML:1.3 0.00011251834 0.5792 AML other m 2021-03-31T11:54:05.13
IV.SCHR.EHE. ML:0.8 2.4195325E-5 0.1792 AML other m 2021-03-31T11:54:08.29
IV.SCHR.EHN. ML:0.8 2.591562E-5 0.2048 AML other m 2021-03-31T11:54:08.60
IV.MCEL.HHE. ML:1 3.1194015E-5 1.6608 AML other m 2021-03-31T11:54:09.94
IV.MCEL.HHN. ML:0.9 2.736106E-5 0.1344 AML other m 2021-03-31T11:54:09.59
IV.MCEL.HNE. ML:1.5 9.6930685E-5 0.3392 AML other m 2021-03-31T11:54:10.01
IV.MCEL.HNN. ML:1.5 9.978479E-5 1.6416 AML other m 2021-03-31T11:54:10.86
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download