Earthquake with magnitude of ML 2.0 on date 20-09-2021 and time 13:17:45 (UTC) in region 2 km W Caposele (AV)

A magnitude ML 2.0 earthquake occured in region: 2 km W Caposele (AV), on

  • 20-09-2021 13:17:45 (UTC)
  • 20-09-2021 15:17:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.809, 15.204 at 15 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
Caposele AV 2 3483 3483
Calabritto AV 3 2391 5874
Teora AV 6 1537 7411
Senerchia AV 7 842 8253
Lioni AV 8 6201 14454
Laviano SA 9 1438 15892
Valva SA 9 1643 17535
Santomenna SA 10 443 17978
Castelnuovo di Conza SA 10 619 18597
Bagnoli Irpino AV 12 3217 21814
Colliano SA 12 3638 25452
Conza della Campania AV 12 1373 26825
Oliveto Citra SA 13 3802 30627
Nusco AV 13 4203 34830
Morra De Sanctis AV 13 1297 36127
Sant'Angelo dei Lombardi AV 14 4250 40377
Acerno SA 14 2783 43160
Sant'Andrea di Conza AV 15 1539 44699
Montella AV 16 7780 52479
Rocca San Felice AV 16 851 53330
Guardia Lombardi AV 16 1718 55048
Cassano Irpino AV 16 982 56030
Pescopagano PZ 17 1910 57940
Torella dei Lombardi AV 17 2144 60084
Andretta AV 17 1927 62011
Cairano AV 17 326 62337
Campagna SA 18 16703 79040
Contursi Terme SA 18 3394 82434
Palomonte SA 18 3985 86419
Castelfranci AV 19 2041 88460
Castelgrande PZ 20 943 89403

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Battipaglia (50786 inhabitants)
36 Km E of Avellino (54857 inhabitants)
40 Km E of Salerno (135261 inhabitants)
44 Km E of Cava de' Tirreni (53659 inhabitants)
50 Km SE of Benevento (60091 inhabitants)
54 Km W of Potenza (67122 inhabitants)
57 Km E of Scafati (50787 inhabitants)
62 Km E of Castellammare di Stabia (66466 inhabitants)
71 Km E of Torre del Greco (86275 inhabitants)
71 Km E of Portici (55274 inhabitants)
72 Km E of Acerra (59573 inhabitants)
72 Km E of Ercolano (53709 inhabitants)
76 Km E of Afragola (65057 inhabitants)
78 Km E of Casoria (77642 inhabitants)
78 Km SW of Cerignola (58396 inhabitants)
78 Km SW of Foggia (151991 inhabitants)
79 Km E of Caserta (76326 inhabitants)
80 Km E of Napoli (974074 inhabitants)
85 Km E of Giugliano in Campania (122974 inhabitants)
86 Km E of Marano di Napoli (59874 inhabitants)
86 Km E of Aversa (53047 inhabitants)
94 Km E of Pozzuoli (81661 inhabitants)
99 Km S of San Severo (53905 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 2.0 2021-09-20
13:17:45
40.8088 15.2038 15 2021-09-20
13:22:53
Sala Sismica INGV-Roma 95664411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-20 13:17:45 ± 0.08
Latitude 40.8088 ± 0.0036
Longitude 15.2038 ± 0.0059
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95664411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 371
Semi-minor axis of confidence ellipse (meter) 351
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 255
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.34444
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 9
Magnitude information

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 95664411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-20 13:22:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CDRU.HHZ. 2021-09-20T13:17:57.91 0.3 undecidable manual S 167 0.3283 99 0.08 71
IV.CAFE.HHZ. 2021-09-20T13:17:54.36 0.6 undecidable manual S 6 0.2203 107 -0.36 45
IV.PAOL.HHZ. 2021-09-20T13:17:54.30 3.0 undecidable manual P -2.27 0
IV.SNAL.HHZ. 2021-09-20T13:17:52.35 0.6 undecidable manual S 2 0.1169 129 0.37 46
IV.CDRU.HHZ. 2021-09-20T13:17:52.57 1.0 undecidable manual P 167 0.3283 99 -0.08 23
IX.MNT3.EHZ.02 2021-09-20T13:17:52.79 0.6 undecidable manual S 281 0.152 119 -0.06 49
IV.VULT.HHZ. 2021-09-20T13:17:52.86 0.3 negative manual P 65 0.3444 99 -0.06 70
IX.SCL3.EHZ.02 2021-09-20T13:17:52.03 3.0 positive manual P 0.38 0
IX.COL3.HHZ.02 2021-09-20T13:17:52.90 0.6 undecidable manual S 142 0.1547 119 -0.03 49
IX.NSC3.EHZ.02 2021-09-20T13:17:51.17 0.6 undecidable manual S 302 0.0728 145 0.08 49
IX.SNR3.EHZ.02 2021-09-20T13:17:51.36 0.6 undecidable manual S 187 0.0737 145 0.24 48
IV.CAFE.HHZ. 2021-09-20T13:17:50.87 0.1 positive manual P 6 0.2203 107 0.02 97
IV.MCRV.HHZ. 2021-09-20T13:17:50.32 0.6 undecidable manual S 226 0.0378 161 -0.31 48
IV.SNAL.HHZ. 2021-09-20T13:17:49.32 0.6 positive manual P 2 0.1169 129 0.05 49
IX.MNT3.EHZ.02 2021-09-20T13:17:49.82 0.1 undecidable manual P 281 0.152 119 0.05 97
IX.COL3.HHZ.02 2021-09-20T13:17:49.91 1.0 negative manual P 142 0.1547 119 0.09 24
IX.SNR3.EHZ.02 2021-09-20T13:17:48.85 0.1 negative manual P 187 0.0737 145 0.08 99
IV.MCRV.HHZ. 2021-09-20T13:17:48.43 0.1 positive manual P 226 0.0378 161 -0.06 100
IX.NSC3.EHZ.02 2021-09-20T13:17:48.67 0.1 negative manual P 302 0.0728 145 -0.09 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCRV.HHE. ML:2 0.001225 1.32 AML other m 2021-09-20T13:17:50.27
IX.NSC3.EHN.02 ML:2 0.001086 0.56 AML other m 2021-09-20T13:17:51.86
IX.NSC3.EHE.02 ML:1.9 0.000814 0.8 AML other m 2021-09-20T13:17:51.70
IV.MCRV.HHN. ML:2.5 0.003575 1 AML other m 2021-09-20T13:17:51.80
IX.SNR3.HNN.01 ML:2.5 0.00313 0.3 AML other m 2021-09-20T13:17:51.66
IX.SNR3.EHN.02 ML:2.4 0.00292 0.3 AML other m 2021-09-20T13:17:51.66
IV.SNAL.HNN. ML:2 0.0009145 0.9 AML other m 2021-09-20T13:17:52.84
IV.SNAL.HHN. ML:2 0.000938 0.92 AML other m 2021-09-20T13:17:52.84
IX.SNR3.HNE.01 ML:2.2 0.001825 0.3 AML other m 2021-09-20T13:17:53.05
IX.SNR3.EHE.02 ML:2.2 0.001705 0.3 AML other m 2021-09-20T13:17:53.05
IV.SNAL.HNE. ML:1.8 0.000583 0.44 AML other m 2021-09-20T13:17:53.09
IX.MNT3.HNE.01 ML:1.9 0.000605 0.96 AML other m 2021-09-20T13:17:53.04
IX.MNT3.EHE.02 ML:2 0.0006725 0.12 AML other m 2021-09-20T13:17:53.47
IX.MNT3.HNN.01 ML:2.2 0.0011665 0.52 AML other m 2021-09-20T13:17:53.83
IX.MNT3.EHN.02 ML:2.2 0.0012515 1.64 AML other m 2021-09-20T13:17:53.83
IX.COL3.HHE.02 ML:2.1 0.000923 1.58 AML other m 2021-09-20T13:17:54.06
IV.SNAL.HHE. ML:1.9 0.000679 0.58 AML other m 2021-09-20T13:17:54.07
IX.COL3.HHN.02 ML:2 0.000735 1.1 AML other m 2021-09-20T13:17:54.77
IV.CAFE.HNE. ML:2 0.000484 0.28 AML other m 2021-09-20T13:17:56.89
IV.CAFE.HHE. ML:2 0.0004875 0.28 AML other m 2021-09-20T13:17:56.89
IV.CAFE.HNN. ML:2 0.0005565 1.46 AML other m 2021-09-20T13:17:57.93
IV.CAFE.HHN. ML:2 0.0005905 1.5 AML other m 2021-09-20T13:17:57.94
IV.CDRU.HHE. ML:1.2 6.54E-5 0.82 AML other m 2021-09-20T13:17:58.54
IV.CDRU.HHN. ML:1.3 7.525E-5 0.16 AML other m 2021-09-20T13:17:59.36
IV.VULT.HHE. ML:1.6 0.00012665 0.26 AML other m 2021-09-20T13:18:00.18
IX.SCL3.EHN.02 ML:2.3 0.000948 1.14 AML other m 2021-09-20T13:18:00.36
IV.VULT.HHN. ML:1.7 0.0001875 0.28 AML other m 2021-09-20T13:18:03.19
IX.SCL3.EHE.02 ML:2.1 0.000597 0.84 AML other m 2021-09-20T13:18:06.93
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download