Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 25-10-2020 and time 21:56:41 (Italy) in region 4 km NW Castelluccio Superiore (PZ)

A magnitude ML 1.2 earthquake occured in region: 4 km NW Castelluccio Superiore (PZ), on

  • 25-10-2020 20:56:41 (UTC)
  • 25-10-2020 21:56:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.04, 15.96 at 10 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
Castelluccio Superiore PZ 4 824 824
Castelluccio Inferiore PZ 4 2131 2955
Latronico PZ 7 4556 7511
Laino Borgo CS 10 1921 9432
Lauria PZ 10 12919 22351
Laino Castello CS 12 848 23199
Rotonda PZ 12 3494 26693
Episcopia PZ 13 1434 28127
Viggianello PZ 14 3025 31152
Nemoli PZ 14 1495 32647
Castelsaraceno PZ 14 1384 34031
Trecchina PZ 15 2316 36347
Carbone PZ 16 638 36985
San Severino Lucano PZ 16 1563 38548
Aieta CS 17 823 39371
Mormanno CS 17 3027 42398
Rivello PZ 17 2767 45165
Lagonegro PZ 19 5584 50749
Teana PZ 19 613 51362
San Chirico Raparo PZ 19 1084 52446
Papasidero CS 19 734 53180
Fardella PZ 20 627 53807
Calvera PZ 20 387 54194

Municipalities with at least 50000 inhabitants

An earthquake occurred to
68 Km S of Potenza (67122 inhabitants)
87 Km N of Cosenza (67546 inhabitants)
88 Km SW of Matera (60436 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 1.2 2020-10-25
20:56:41		 40.04 15.96 10 2020-10-25
21:07:08		 Sala Sismica INGV-Roma 84129581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-25 20:56:41 ± 0.08
Latitude 40.04 ± 0.00
Longitude 15.96 ± 0.01
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84129581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 601
Semi-minor axis of confidence ellipse (meter) 224
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 94
Circular confidence region, given by single value of horizontal uncertainty (meter) 600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.11961
Epicentral distance of station farthest from the epicenter (degree) 0.42628
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 84129581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-25 21:07:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SLCN.HNN. 2020-10-25T20:56:55.84 0.3 undecidable manual S 325 0.4263 50 -0.62 61
IV.MCEL.HHZ. 2020-10-25T20:56:53.17 0.1 undecidable manual S 337 0.3058 50 0.27 91
IV.MGR.HHZ. 2020-10-25T20:56:53.49 0.3 undecidable manual S 287 0.3229 50 0.08 71
IV.GRIS.EHE. 2020-10-25T20:56:53.33 0.3 undecidable manual S 195 0.313 50 0.22 69
IV.SLCN.HNN. 2020-10-25T20:56:50.07 0.3 undecidable manual P 325 0.4263 50 0.06 70
IV.GRIS.EHE. 2020-10-25T20:56:48.13 0.3 undecidable manual P 195 0.313 50 0.07 71
IV.SIRI.HHZ. 2020-10-25T20:56:48.46 0.1 undecidable manual S 334 0.1547 121 0.35 93
IV.MMN.HHZ. 2020-10-25T20:56:48.24 0.1 undecidable manual S 171 0.1538 121 0.16 96
IV.MGR.HHZ. 2020-10-25T20:56:48.13 0.1 undecidable manual P 287 0.3229 50 -0.11 94
IV.SCHR.EHZ. 2020-10-25T20:56:48.80 0.1 undecidable manual S 30 0.1808 117 -0.18 96
IV.MCEL.HHZ. 2020-10-25T20:56:47.84 0.1 undecidable manual P 337 0.3058 50 -0.1 95
MN.CUC.HHZ. 2020-10-25T20:56:46.68 0.1 undecidable manual S 246 0.1196 128 -0.29 95
IV.SIRI.HHZ. 2020-10-25T20:56:45.44 0.1 undecidable manual P 334 0.1547 121 0.26 94
IV.MMN.HHZ. 2020-10-25T20:56:45.01 0.1 undecidable manual P 171 0.1538 121 -0.16 96
IV.SCHR.EHZ. 2020-10-25T20:56:45.60 0.1 undecidable manual P 30 0.1808 117 -0.08 98
MN.CUC.HHZ. 2020-10-25T20:56:44.53 0.1 undecidable manual P 246 0.1196 128 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SIRI.HHN. ML:1.5 0.0002575 1.44 AML other m 2020-10-25T20:56:49.85
MN.CUC.HHN. ML:1 9.56E-5 0.44 AML other m 2020-10-25T20:56:47.03
IV.SCHR.EHE. ML:1.1 9.95E-5 1.9 AML other m 2020-10-25T20:56:48.01
IV.SCHR.EHN. ML:1.1 9.805E-5 1.82 AML other m 2020-10-25T20:56:48.98
IV.SIRI.HNN. ML:1.4 0.000235 0.22 AML other m 2020-10-25T20:56:49.24
IV.SIRI.HHE. ML:1.4 0.000238 0.9 AML other m 2020-10-25T20:56:49.71
IV.SIRI.HNE. ML:1.5 0.000258 0.9 AML other m 2020-10-25T20:56:49.26
IV.MCEL.HNE. ML:1.6 0.0001723 1.6 AML other m 2020-10-25T20:56:53.83
IV.MCEL.HNN. ML:1.4 0.00011425 0.84 AML other m 2020-10-25T20:56:54.50
MN.CUC.HNE. ML:1 0.0001166485 0.9728 AML other m 2020-10-25T20:56:47.55
MN.CUC.HNN. ML:0.9 8.2255862E-5 0.1408 AML other m 2020-10-25T20:56:46.84
IV.MCEL.HHE. ML:1 4.574824E-5 0.2304 AML other m 2020-10-25T20:56:53.39
IV.MCEL.HHN. ML:0.9 2.902426E-5 0.1536 AML other m 2020-10-25T20:56:53.27
IV.MGR.HHE. ML:0.7 1.9205562E-5 0.1792 AML other m 2020-10-25T20:56:55.44
IV.MGR.HHN. ML:0.8 2.725969E-5 0.1408 AML other m 2020-10-25T20:56:54.39
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download