Earthquake with magnitude of ML 1.8 on date 27-10-2020 and time 02:05:17 (Italy) in region 2 km N Valva (SA)

A magnitude ML 1.8 earthquake occured in region: 2 km N Valva (SA), on

  • 27-10-2020 01:05:17 (UTC)
  • 27-10-2020 02:05:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.76, 15.27 at 16 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
Valva SA 2 1643 1643
Colliano SA 4 3638 5281
Laviano SA 5 1438 6719
Calabritto AV 5 2391 9110
Senerchia AV 6 842 9952
Santomenna SA 7 443 10395
Oliveto Citra SA 8 3802 14197
Caposele AV 8 3483 17680
Castelnuovo di Conza SA 8 619 18299
Palomonte SA 11 3985 22284
Teora AV 11 1537 23821
Contursi Terme SA 12 3394 27215
Conza della Campania AV 13 1373 28588
Sant'Andrea di Conza AV 13 1539 30127
Pescopagano PZ 14 1910 32037
Castelgrande PZ 14 943 32980
Lioni AV 15 6201 39181
San Gregorio Magno SA 16 4286 43467
Buccino SA 16 5047 48514
Campagna SA 17 16703 65217
Acerno SA 18 2783 68000
Cairano AV 18 326 68326
Muro Lucano PZ 18 5497 73823
Morra De Sanctis AV 19 1297 75120
Bagnoli Irpino AV 19 3217 78337
Romagnano al Monte SA 20 368 78705

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Battipaglia (50786 inhabitants)
44 Km E of Avellino (54857 inhabitants)
44 Km E of Salerno (135261 inhabitants)
47 Km W of Potenza (67122 inhabitants)
48 Km E of Cava de' Tirreni (53659 inhabitants)
58 Km SE of Benevento (60091 inhabitants)
63 Km E of Scafati (50787 inhabitants)
67 Km E of Castellammare di Stabia (66466 inhabitants)
76 Km E of Torre del Greco (86275 inhabitants)
77 Km E of Portici (55274 inhabitants)
78 Km SW of Cerignola (58396 inhabitants)
78 Km E of Ercolano (53709 inhabitants)
78 Km E of Acerra (59573 inhabitants)
82 Km S of Foggia (151991 inhabitants)
83 Km E of Afragola (65057 inhabitants)
84 Km E of Casoria (77642 inhabitants)
86 Km E of Napoli (974074 inhabitants)
86 Km E of Caserta (76326 inhabitants)
92 Km E of Giugliano in Campania (122974 inhabitants)
92 Km E of Marano di Napoli (59874 inhabitants)
93 Km E of Aversa (53047 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 1.8 2020-10-27
01:05:17
40.76 15.27 16 2020-10-27
01:14:40
Sala Sismica INGV-Roma 84168881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-27 01:05:17 ± 0.18
Latitude 40.76 ± 0.01
Longitude 15.27 ± 0.01
Depth (km) 16 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84168881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 922
Semi-minor axis of confidence ellipse (meter) 620
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 68
Circular confidence region, given by single value of horizontal uncertainty (meter) 920
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.50992
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 84168881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-27 01:14:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LRP.EHZ. 2020-10-27T01:06:04.74 3.0 undecidable manual Sn 0.17 0
IV.PTRJ.HNZ. 2020-10-27T01:05:46.46 3.0 undecidable manual S -0.01 0
IV.ACER.HHZ. 2020-10-27T01:05:34.77 0.6 undecidable manual S 86 0.5099 97 0.05 47
IV.CMPR.HHZ. 2020-10-27T01:05:32.91 0.6 undecidable manual S 177 0.438 98 0.31 46
IX.RDM3.HHZ.02 2020-10-27T01:05:29.39 3.0 undecidable manual S 59 0.2347 110 2.68 0
IV.CAFE.HHZ. 2020-10-27T01:05:28.31 0.1 undecidable manual S 355 0.2734 106 0.5 90
IV.SLCN.HHZ. 2020-10-27T01:05:27.43 3.0 undecidable manual P 1.08 0
IV.ACER.HHZ. 2020-10-27T01:05:26.75 0.1 undecidable manual P 86 0.5099 97 -0.5 85
IX.MNT3.HHZ.02 2020-10-27T01:05:26.48 0.6 undecidable manual S 292 0.2149 112 0.3 48
IV.CMPR.HHZ. 2020-10-27T01:05:25.77 0.1 positive manual P 177 0.438 98 -0.26 90
IV.SNAL.HHZ. 2020-10-27T01:05:25.38 0.6 undecidable manual S 345 0.1754 119 0.25 48
IX.SALI.HNE.01 2020-10-27T01:05:25.89 0.1 undecidable manual S 339 0.1871 117 0.47 92
IX.STN3.HHZ.02 2020-10-27T01:05:25.16 0.6 positive manual P 128 0.3669 101 0.33 46
IV.SGO.HHZ. 2020-10-27T01:05:25.94 0.6 undecidable manual S 172 0.197 115 0.24 49
IV.MCRV.HHZ. 2020-10-27T01:05:23.09 0.6 undecidable manual S 289 0.0809 145 0.06 51
IX.RDM3.HHZ.02 2020-10-27T01:05:23.22 0.1 undecidable manual P 59 0.2347 110 0.59 88
IX.LIO3.HHE.02 2020-10-27T01:05:23.88 0.1 undecidable manual S 334 0.1565 123 -0.76 82
IV.SGO.HHZ. 2020-10-27T01:05:22.00 0.1 undecidable manual P 172 0.197 115 -0.05 99
IX.MNT3.HHZ.02 2020-10-27T01:05:22.45 0.1 positive manual P 292 0.2149 112 0.13 99
IV.CAFE.HHZ. 2020-10-27T01:05:22.99 0.1 undecidable manual P 355 0.2734 106 -0.27 93
IX.LIO3.HHE.02 2020-10-27T01:05:21.14 0.1 undecidable manual P 334 0.1565 123 -0.29 95
IV.SNAL.HHZ. 2020-10-27T01:05:21.61 0.1 positive manual P 345 0.1754 119 -0.1 99
IX.SALI.HNE.01 2020-10-27T01:05:21.78 0.1 undecidable manual P 339 0.1871 117 -0.1 98
IV.MCRV.HHZ. 2020-10-27T01:05:20.38 0.1 negative manual P 289 0.0809 145 -0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCRV.HHE. ML:1.9 0.0007805 0.6 AML other m 2020-10-27T01:05:23.69
IV.MCRV.HHN. ML:2.1 0.0010975 0.12 AML other m 2020-10-27T01:05:23.73
IV.SGO.HHE. ML:1.5 0.000187 0.26 AML other m 2020-10-27T01:05:26.22
IV.SGO.HHN. ML:1.7 0.0002665 1.08 AML other m 2020-10-27T01:05:26.88
IX.MNT3.HHE.02 ML:1.7 0.000244 0.28 AML other m 2020-10-27T01:05:27.12
IX.MNT3.HHN.02 ML:1.8 0.0003565 0.12 AML other m 2020-10-27T01:05:27.63
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