Earthquake with magnitude of ML 1.9 on date 16-05-2021 and time 11:27:53 (Italy) in region 4 km E San Martino d'Agri (PZ)

A magnitude ML 1.9 earthquake occured in region: 4 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) 40.25, 16.092 at 18 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.

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 4 801 801
Gallicchio PZ 6 862 1663
San Chirico Raparo PZ 7 1084 2747
Armento PZ 7 631 3378
Missanello PZ 7 566 3944
Montemurro PZ 10 1235 5179
Roccanova PZ 10 1543 6722
Castronuovo di Sant'Andrea PZ 11 1067 7789
Spinoso PZ 11 1462 9251
Carbone PZ 12 638 9889
Calvera PZ 12 387 10276
Castelsaraceno PZ 13 1384 11660
Guardia Perticara PZ 13 552 12212
Aliano MT 14 1008 13220
Teana PZ 15 613 13833
Corleto Perticara PZ 16 2511 16344
Sant'Arcangelo PZ 16 6533 22877
Fardella PZ 16 627 23504
Gorgoglione MT 17 989 24493
Sarconi PZ 17 1404 25897
Chiaromonte PZ 17 1965 27862
Cirigliano MT 17 375 28237
Grumento Nova PZ 18 1700 29937
Moliterno PZ 19 4062 33999
Viggiano PZ 19 3329 37328
Latronico PZ 19 4556 41884
Episcopia PZ 19 1434 43318

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km SE of Potenza (67122 inhabitants)
63 Km SW of Matera (60436 inhabitants)
75 Km SW of Altamura (70396 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
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 ± 0.18
Latitude 40.2497 ± 0.0072
Longitude 16.0922 ± 0.0094
Depth (km) 18 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90159861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 875
Semi-minor axis of confidence ellipse (meter) 376
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 298
Circular confidence region, given by single value of horizontal uncertainty (meter) 880
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.44247
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitude 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
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NOCI.HHZ. 2021-05-16T09:28:25.04 3.0 undecidable manual S 0.56 0
IX.STN3.HHZ.02 2021-05-16T09:28:09.28 0.6 undecidable manual S 310 0.4371 101 0.57 40
IV.MGR.HHZ. 2021-05-16T09:28:08.53 0.6 undecidable manual S 255 0.4263 102 0.13 45
IV.AMUR.HHZ. 2021-05-16T09:28:08.66 3.0 negative manual P 0.46 0
IV.MIGL.HHZ. 2021-05-16T09:28:08.94 0.6 undecidable manual S 37 0.4425 101 0.06 47
MN.CUC.HHZ. 2021-05-16T09:28:06.28 0.6 undecidable manual S 220 0.3318 106 0.6 41
IV.PTRP.HHZ. 2021-05-16T09:28:04.50 0.6 undecidable manual S 355 0.2725 111 0.48 44
IX.STN3.HHZ.02 2021-05-16T09:28:02.11 0.3 undecidable manual P 310 0.4371 101 -0.01 70
IV.MCEL.HHZ. 2021-05-16T09:28:02.41 0.6 undecidable manual S 289 0.2338 115 -0.55 44
IV.SIRI.HHZ. 2021-05-16T09:28:01.76 0.3 undecidable manual S 249 0.1844 123 0.09 72
IV.MGR.HHZ. 2021-05-16T09:28:01.58 0.3 negative manual P 255 0.4263 102 -0.36 66
IV.MMN.HHZ. 2021-05-16T09:28:01.52 0.1 undecidable manual P 192 0.3669 104 0.57 84
IV.MIGL.HHZ. 2021-05-16T09:28:01.66 0.1 undecidable manual P 37 0.4425 101 -0.56 81
IV.ORI.HHN. 2021-05-16T09:28:00.57 0.1 undecidable manual P 126 0.3381 106 0.09 95
MN.CUC.HHZ. 2021-05-16T09:27:59.92 0.1 undecidable manual P 220 0.3318 106 -0.45 87
IV.PTRP.HHZ. 2021-05-16T09:27:59.67 0.1 undecidable manual P 355 0.2725 111 0.26 92
IV.SCHR.EHZ. 2021-05-16T09:27:59.28 0.3 undecidable manual S 194 0.0522 160 0.13 75
IV.CRAC.EHZ. 2021-05-16T09:27:59.81 0.1 positive manual P 63 0.2923 109 0.08 96
IV.MCEL.HHZ. 2021-05-16T09:27:58.66 0.1 undecidable manual P 289 0.2338 115 -0.14 96
IV.SIRI.HHZ. 2021-05-16T09:27:57.78 0.1 positive manual P 249 0.1844 123 -0.28 94
IV.SCHR.EHZ. 2021-05-16T09:27:56.57 0.1 positive manual P 194 0.0522 160 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SCHR.EHE. ML:1.8 0.000634 0.74 AML other m 2021-05-16T09:27:59.96
IV.SCHR.EHN. ML:1.8 0.00054945205 0.48 AML other m 2021-05-16T09:27:59.65
IV.SIRI.HNE. ML:1.7 0.00031085955 1.6576 AML other m 2021-05-16T09:28:03.18
IV.SIRI.HHE. ML:1.8 0.000383 0.92 AML other m 2021-05-16T09:28:03.18
IV.SIRI.HNN. ML:1.9 0.000529 0.66 AML other m 2021-05-16T09:28:03.58
IV.SIRI.HHN. ML:1.9 0.000544 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:1.7 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
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 1.1712 AML other m 2021-05-16T09:28:13.14
IX.STN3.HHN.02 ML:3 0.0027120155 1.824 AML other m 2021-05-16T09:28:11.43
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