Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 30-10-2020 and time 17:09:46 (UTC) in region 3 km E Piaggine (SA)

A magnitude ML 1.7 earthquake occured in region: 3 km E Piaggine (SA), on

  • 30-10-2020 17:09:46 (UTC)
  • 30-10-2020 18:09:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.35, 15.42 at 17 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
Piaggine SA 3 1311 1311
Valle dell'Angelo SA 4 248 1559
Sacco SA 5 492 2051
Laurino SA 7 1548 3599
Roscigno SA 9 817 4416
Corleto Monforte SA 11 592 5008
San Rufo SA 11 1754 6762
Monte San Giacomo SA 11 1572 8334
Campora SA 11 439 8773
Teggiano SA 11 7976 16749
Bellosguardo SA 12 794 17543
Sassano SA 13 5013 22556
San Pietro al Tanagro SA 14 1695 24251
Sant'Angelo a Fasanella SA 14 635 24886
Stio SA 14 872 25758
Felitto SA 14 1283 27041
Magliano Vetere SA 15 695 27736
Rofrano SA 15 1576 29312
Sant'Arsenio SA 15 2815 32127
Cannalonga SA 15 1063 33190
Ottati SA 16 618 33808
Sala Consilina SA 16 12664 46472
Sanza SA 16 2608 49080
Moio della Civitella SA 17 1827 50907
Novi Velia SA 17 2324 53231
Atena Lucana SA 17 2336 55567
Aquara SA 17 1545 57112
Castel San Lorenzo SA 18 2471 59583
Gioi SA 18 1278 60861
Vallo della Lucania SA 18 8531 69392
Alfano SA 19 1023 70415
Monteforte Cilento SA 19 564 70979
Buonabitacolo SA 19 2549 73528
Laurito SA 20 788 74316
Polla SA 20 5279 79595

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km SW of Potenza (67122 inhabitants)
47 Km SE of Battipaglia (50786 inhabitants)
67 Km SE of Salerno (135261 inhabitants)
72 Km SE of Cava de' Tirreni (53659 inhabitants)
82 Km SE of Avellino (54857 inhabitants)
87 Km SE of Scafati (50787 inhabitants)
88 Km E of Castellammare di Stabia (66466 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 1.7 2020-10-30
17:09:46		 40.35 15.41 17 2020-10-30
17:27:27		 Sala Sismica INGV-Roma 84273551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-30 17:09:46 ± 0.12
Latitude 40.35 ± 0.00
Longitude 15.41 ± 0.01
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84273551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 686
Semi-minor axis of confidence ellipse (meter) 412
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 267
Circular confidence region, given by single value of horizontal uncertainty (meter) 690
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.08993
Epicentral distance of station farthest from the epicenter (degree) 0.46675
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 84273551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-30 17:27:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.BULG.HHZ. 2020-10-30T17:09:57.77 0.3 undecidable manual S 186 0.2698 108 0.54 67
IX.STN3.HNZ.02 2020-10-30T17:09:57.01 0.3 undecidable manual S 44 0.2572 110 0.13 72
IV.SGO.HHZ. 2020-10-30T17:09:56.09 0.3 undecidable manual S 339 0.2284 113 -0.01 75
IV.CAGG.EHN. 2020-10-30T17:09:56.44 0.6 undecidable manual S 19 0.223 114 0.5 45
MN.CUC.HHE. 2020-10-30T17:09:56.35 0.6 undecidable manual P 139 0.4667 99 0.35 45
IX.CGG3.HNN.01 2020-10-30T17:09:56.27 0.3 undecidable manual S 23 0.2122 115 0.63 64
IX.CMP3.HNZ.02 2020-10-30T17:09:55.21 0.3 undecidable manual P 320 0.3975 101 0.39 68
IV.MGR.HHZ. 2020-10-30T17:09:55.87 0.3 undecidable manual S 153 0.2338 112 -0.38 69
IV.MRLC.HHZ. 2020-10-30T17:09:54.54 0.3 undecidable manual P 8 0.4137 100 -0.56 64
IV.SLCN.HHZ. 2020-10-30T17:09:54.83 0.3 undecidable manual S 75 0.1718 122 0.23 72
IX.SCL3.HHE.02 2020-10-30T17:09:54.96 0.3 undecidable manual P 12 0.3561 103 0.83 58
IV.SIRI.HHZ. 2020-10-30T17:09:54.50 0.3 undecidable manual P 115 0.3822 101 -0.08 72
IX.PGN3.HHE.02 2020-10-30T17:09:54.17 0.3 undecidable manual P 52 0.3678 102 -0.16 71
IX.SRN3.HHE.02 2020-10-30T17:09:53.47 0.3 undecidable manual S 13 0.143 128 -0.44 70
IX.COL3.HNE.02 2020-10-30T17:09:53.60 0.3 undecidable manual P 349 0.3462 103 -0.37 68
IV.CMPR.HHZ. 2020-10-30T17:09:52.78 0.3 undecidable manual S 252 0.0899 144 -0.03 76
IX.STN3.HNZ.02 2020-10-30T17:09:52.21 0.3 undecidable manual P 44 0.2572 110 -0.29 71
IV.BULG.HHZ. 2020-10-30T17:09:52.96 0.3 undecidable manual P 186 0.2698 108 0.25 71
IV.MCEL.HHZ. 2020-10-30T17:09:52.98 0.3 undecidable manual P 94 0.2959 106 -0.16 72
IX.TEGI.HNN.01 2020-10-30T17:09:52.88 0.3 undecidable manual S 70 0.0989 141 -0.09 76
IX.CGG3.HNN.01 2020-10-30T17:09:51.85 0.3 undecidable manual P 23 0.2122 115 0.06 75
IV.SGO.HHZ. 2020-10-30T17:09:51.80 0.3 undecidable manual P 339 0.2284 113 -0.25 71
IV.SLCN.HHZ. 2020-10-30T17:09:51.25 0.3 undecidable manual P 75 0.1718 122 0.06 75
IV.CAGG.EHN. 2020-10-30T17:09:51.78 0.3 undecidable manual P 19 0.223 114 -0.18 73
IV.MGR.HHZ. 2020-10-30T17:09:51.91 0.3 undecidable manual P 153 0.2338 112 -0.23 72
IX.TEGI.HNN.01 2020-10-30T17:09:50.03 0.3 undecidable manual P 70 0.0989 141 -0.21 74
IV.CMPR.HHZ. 2020-10-30T17:09:50.34 0.1 undecidable manual P 252 0.0899 144 0.19 100
IX.SRN3.HHE.02 2020-10-30T17:09:50.58 0.3 undecidable manual P 13 0.143 128 -0.21 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SIRI.HHE. ML:1.6 0.00012240675 0.256 AML other m 2020-10-30T17:10:04.42
IV.CMPR.HHE. ML:1.9 0.0007213099 0.0768 AML other m 2020-10-30T17:09:53.24
IV.CMPR.HHN. ML:2 0.00093767545 0.128 AML other m 2020-10-30T17:09:53.10
IV.SLCN.HHE. ML:2.1 0.00076161585 0.256 AML other m 2020-10-30T17:09:56.70
IV.SLCN.HHN. ML:1.9 0.0005162729 0.32 AML other m 2020-10-30T17:09:56.23
IV.SLCN.HNE. ML:2 0.00069455665 0.2432 AML other m 2020-10-30T17:09:56.58
IV.SLCN.HNN. ML:1.8 0.0004074955 0.32 AML other m 2020-10-30T17:09:56.39
IV.SGO.HHE. ML:1.6 0.0002019266 0.1408 AML other m 2020-10-30T17:09:56.45
IV.SGO.HHN. ML:1.8 0.0003039333 0.1152 AML other m 2020-10-30T17:09:56.40
IV.SGO.HNE. ML:1.4 0.00013978164 0.3072 AML other m 2020-10-30T17:09:55.76
IV.SGO.HNN. ML:1.8 0.0002801057 0.128 AML other m 2020-10-30T17:09:56.34
IV.MGR.HHE. ML:1.6 0.00019210065 0.0768 AML other m 2020-10-30T17:09:56.49
IV.MGR.HHN. ML:1.7 0.0002609627 0.2432 AML other m 2020-10-30T17:09:55.96
IV.MGR.HNE. ML:1.6 0.00018025685 0.0768 AML other m 2020-10-30T17:09:56.50
IV.MGR.HNN. ML:1.7 0.00026900285 0.2432 AML other m 2020-10-30T17:09:55.97
IX.STN3.HHE.02 ML:3.5 0.013832205 0.2816 AML other m 2020-10-30T17:09:58.78
IX.STN3.HHN.02 ML:3.3 0.0085608685 0.2944 AML other m 2020-10-30T17:10:00.84
IX.STN3.HNN.01 ML:4.2 0.07991524 0.3328 AML other m 2020-10-30T17:09:59.19
IV.BULG.HHN. ML:1.7 0.00023865095 0.1536 AML other m 2020-10-30T17:09:58.69
IV.BULG.HNE. ML:1.6 0.00015999405 0.1408 AML other m 2020-10-30T17:09:59.69
IV.BULG.HNN. ML:1.7 0.0002392166 0.1536 AML other m 2020-10-30T17:09:58.62
IV.BULG.HHE. ML:1.6 0.00017350845 0.1408 AML other m 2020-10-30T17:09:59.69
IV.MCEL.HNN. ML:1.8 0.0002604439 0.576 AML other m 2020-10-30T17:10:05.60
IV.MCEL.HHE. ML:1.6 0.00017423155 0.32 AML other m 2020-10-30T17:10:01.61
IV.MCEL.HHN. ML:1.6 0.0001387153 0.64 AML other m 2020-10-30T17:10:00.20
IV.MCEL.HNE. ML:1.8 0.0002750312 0.384 AML other m 2020-10-30T17:10:03.76
IV.SIRI.HNN. ML:1.5 0.00010307815 0.2176 AML other m 2020-10-30T17:10:03.40
IV.SIRI.HHN. ML:1.5 0.0001074642 0.2176 AML other m 2020-10-30T17:10:03.40
IV.SIRI.HNE. ML:1.6 0.0001164296 0.2432 AML other m 2020-10-30T17:10:04.42
IV.MRLC.HNN. ML:1 2.356892E-5 0.3328 AML other m 2020-10-30T17:10:04.33
IV.MRLC.HHE. ML:1.2 3.9389185E-5 0.192 AML other m 2020-10-30T17:10:07.12
IV.MRLC.HHN. ML:1.3 4.917919E-5 0.3328 AML other m 2020-10-30T17:10:04.49
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