Earthquake with magnitude of ML 1.8 on date 16-05-2021 and time 11:27:53 (Italy) in region 3 km E San Martino d'Agri (PZ)

A magnitude ML 1.8 earthquake occured in region: 3 km E San Martino d'Agri (PZ), on

  • 16-05-2021 09:27:53 (UTC)
  • 16-05-2021 11:27:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.242, 16.089 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.

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 Martino d'Agri PZ 3 801 801
San Chirico Raparo PZ 6 1084 1885
Gallicchio PZ 7 862 2747
Armento PZ 7 631 3378
Missanello PZ 8 566 3944
Castronuovo di Sant'Andrea PZ 10 1067 5011
Montemurro PZ 10 1235 6246
Roccanova PZ 10 1543 7789
Spinoso PZ 11 1462 9251
Carbone PZ 11 638 9889
Calvera PZ 11 387 10276
Castelsaraceno PZ 12 1384 11660
Guardia Perticara PZ 14 552 12212
Teana PZ 14 613 12825
Aliano MT 15 1008 13833
Fardella PZ 16 627 14460
Sant'Arcangelo PZ 16 6533 20993
Corleto Perticara PZ 16 2511 23504
Chiaromonte PZ 17 1965 25469
Sarconi PZ 17 1404 26873
Grumento Nova PZ 18 1700 28573
Gorgoglione MT 18 989 29562
Latronico PZ 18 4556 34118
Cirigliano MT 18 375 34493
Moliterno PZ 19 4062 38555
Episcopia PZ 19 1434 39989
Viggiano PZ 19 3329 43318

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km SE of Potenza (67122 inhabitants)
64 Km SW of Matera (60436 inhabitants)
76 Km SW of Altamura (70396 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 1.8 2021-05-16
09:27:53
40.2422 16.0887 18 2021-12-29
11:12:37
Bollettino Sismico Italiano INGV 96549841
Reviewed
Rev100
ML 1.9 2021-05-16
09:27:53
40.2497 16.0922 18 2021-05-16
09:37:47
Sala Sismica INGV-Roma 90159861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-16 09:27:53 ± 0.1
Latitude 40.2422 ± 0.0045
Longitude 16.0887 ± 0.0071
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 96549841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 566
Semi-minor axis of confidence ellipse (meter) 355
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 129
Circular confidence region, given by single value of horizontal uncertainty (meter) 570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
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) 0.04407
Epicentral distance of station farthest from the epicenter (degree) 0.89303
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 90159861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-16 09:37:47

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 96549841
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-14 14:12:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MRVN.HHZ. 2021-05-16T09:28:09.23 0.3 undecidable manual P 6 0.822 95 0.59 56
IX.STN3.HHZ.02 2021-05-16T09:28:09.28 0.6 undecidable manual S 311 0.4398 101 0.5 41
OT.MASS.HHE. 2021-05-16T09:28:09.80 0.3 undecidable manual P 64 0.893 95 -0.04 62
IV.MIGL.HHZ. 2021-05-16T09:28:08.94 0.6 undecidable manual S 36 0.4506 101 -0.15 44
IV.MGR.HHZ. 2021-05-16T09:28:08.39 0.6 undecidable manual S 256 0.4218 102 0.14 45
IX.PGN3.HHN.02 2021-05-16T09:28:08.25 0.6 undecidable manual S 326 0.3975 103 0.69 38
IV.AMUR.HHZ. 2021-05-16T09:28:08.57 0.3 undecidable manual P 30 0.7716 96 0.8 53
IV.CET2.HHZ. 2021-05-16T09:28:07.15 0.3 undecidable manual P 188 0.7204 96 0.25 62
MN.CUC.HHZ. 2021-05-16T09:28:05.85 0.6 undecidable manual S 220 0.3247 107 0.4 43
IV.PTRP.HHZ. 2021-05-16T09:28:04.22 0.6 undecidable manual S 356 0.2797 110 0.01 48
GE.MATE.HHN. 2021-05-16T09:28:04.48 0.6 undecidable manual P 49 0.6205 97 -0.72 36
IV.GRIS.HNE. 2021-05-16T09:28:03.91 0.3 undecidable manual P 200 0.5324 99 0.19 66
IV.MTSN.HNN. 2021-05-16T09:28:03.71 0.6 undecidable manual S 275 0.2581 112 0.11 46
IV.MCEL.HHZ. 2021-05-16T09:28:02.55 0.6 undecidable manual S 291 0.2338 115 -0.39 45
IX.STN3.HHZ.02 2021-05-16T09:28:02.11 0.3 undecidable manual P 311 0.4398 101 -0.04 69
IV.MGR.HHZ. 2021-05-16T09:28:01.46 0.3 undecidable manual P 256 0.4218 102 -0.39 65
IX.PGN3.HHN.02 2021-05-16T09:28:01.31 0.6 undecidable manual P 326 0.3975 103 -0.14 46
IX.VGG3.HNZ.01 2021-05-16T09:28:01.20 0.6 undecidable manual S 303 0.1709 125 -0.13 48
IV.MIGL.HHZ. 2021-05-16T09:28:01.66 0.1 undecidable manual P 36 0.4506 101 -0.67 76
IV.MMN.HHZ. 2021-05-16T09:28:01.24 0.3 undecidable manual P 192 0.3588 105 0.44 65
IV.SIRI.HHZ. 2021-05-16T09:28:01.22 0.3 undecidable manual S 251 0.179 124 -0.31 69
IV.ORI.HHN. 2021-05-16T09:28:00.56 0.3 undecidable manual P 125 0.3363 106 0.14 70
IV.CRAC.EHZ. 2021-05-16T09:27:59.81 0.1 positive manual P 62 0.2986 108 0 94
MN.CUC.HHZ. 2021-05-16T09:27:59.92 0.1 undecidable manual P 220 0.3247 107 -0.31 89
IV.SCHR.EHZ. 2021-05-16T09:27:59.28 0.3 undecidable manual S 193 0.0441 163 0.23 72
IV.PTRP.HHZ. 2021-05-16T09:27:59.67 0.1 undecidable manual P 356 0.2797 110 0.16 93
IV.MCEL.HHZ. 2021-05-16T09:27:58.59 0.1 undecidable manual P 291 0.2338 115 -0.19 93
IV.MTSN.HNN. 2021-05-16T09:27:58.93 0.1 undecidable manual P 275 0.2581 112 -0.23 92
IV.SIRI.HHZ. 2021-05-16T09:27:57.78 0.1 positive manual P 251 0.179 124 -0.18 94
IX.VGG3.HNZ.01 2021-05-16T09:27:57.69 0.3 undecidable manual P 303 0.1709 125 -0.16 71
IV.SCHR.EHZ. 2021-05-16T09:27:56.57 0.1 positive manual P 193 0.0441 163 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SCHR.EHN. ML:1.8 0.00054945205 0.48 AML other m 2021-05-16T09:27:59.65
IV.SCHR.EHE. ML:1.8 0.000634 0.74 AML other m 2021-05-16T09:27:59.96
IV.SIRI.HNE. ML:1.7 0.00031085955 0.3424 AML other m 2021-05-16T09:28:02.18
IV.SIRI.HHE. ML:1.8 0.000383 0.92 AML other m 2021-05-16T09:28:03.18
IV.SIRI.HHN. ML:1.9 0.000544 0.66 AML other m 2021-05-16T09:28:03.58
IV.SIRI.HNN. ML:1.9 0.000529 0.66 AML other m 2021-05-16T09:28:03.58
IV.MCEL.HHE. ML:1.8 0.0003405 1.12 AML other m 2021-05-16T09:28:04.10
IV.MCEL.HHN. ML:2 0.0004525 1.7 AML other m 2021-05-16T09:28:04.11
IV.MCEL.HNE. ML:2.3 0.000999 1.46 AML other m 2021-05-16T09:28:04.98
IV.MCEL.HNN. ML:2.4 0.0011385 1.14 AML other m 2021-05-16T09:28:05.65
IV.PTRP.HHN. ML:0 0.0001115 0.86 AML other m 2021-05-16T09:28:05.50
MN.CUC.HHN. ML:1.3 7.435E-5 1.08 AML other m 2021-05-16T09:28:06.09
MN.CUC.HHE. ML:1.4 8.225E-5 0.7 AML other m 2021-05-16T09:28:06.51
IV.CRAC.EHE. ML:1.8 0.0002215 0.54 AML other m 2021-05-16T09:28:07.71
IV.CRAC.EHN. ML:1.8 0.0002165 1.2 AML other m 2021-05-16T09:28:09.75
IV.MGR.HHN. ML:1.9 0.000201 1.34 AML other m 2021-05-16T09:28:09.97
IV.MIGL.HHN. ML:2.2 0.000442 0.5 AML other m 2021-05-16T09:28:10.21
IV.MGR.HHE. ML:1.7 0.000146 0.58 AML other m 2021-05-16T09:28:10.30
IV.MIGL.HHE. ML:2.3 0.0004665 0.78 AML other m 2021-05-16T09:28:10.99
IX.STN3.HHN.02 ML:3 0.0027120155 0.176 AML other m 2021-05-16T09:28:12.43
IV.PTRP.HHE. ML:1.3 9.155E-5 0.7 AML other m 2021-05-16T09:28:12.39
IX.STN3.HHE.02 ML:3.1 0.003355659 0.8288 AML other m 2021-05-16T09:28:12.14
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