Earthquake with magnitude of ML 2.1 on date 13-01-2021 and time 07:58:19 (UTC) in region 4 km N Giffoni Valle Piana (SA)

A magnitude ML 2.1 earthquake occured in region: 4 km N Giffoni Valle Piana (SA), on

  • 13-01-2021 07:58:19 (UTC)
  • 13-01-2021 08:58:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.76, 14.94 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Giffoni Valle Piana SA 5 12001 12001
Giffoni Sei Casali SA 5 5264 17265
San Cipriano Picentino SA 7 6631 23896
Montecorvino Rovella SA 8 12739 36635
Castiglione del Genovesi SA 8 1383 38018
Montecorvino Pugliano SA 9 10701 48719
Calvanico SA 9 1518 50237
San Mango Piemonte SA 10 2649 52886
Acerno SA 11 2783 55669
Solofra AV 11 12495 68164
Fisciano SA 12 13820 81984
Montella AV 12 7780 89764
Serino AV 12 7034 96798
Olevano sul Tusciano SA 13 6878 103676
Volturara Irpina AV 14 3289 106965
Pontecagnano Faiano SA 14 26097 133062
Baronissi SA 14 17003 150065
Santa Lucia di Serino AV 14 1402 151467
Bagnoli Irpino AV 14 3217 154684
Cassano Irpino AV 15 982 155666
San Michele di Serino AV 15 2530 158196
Bellizzi SA 15 13568 171764
Pellezzano SA 15 10965 182729
Mercato San Severino SA 16 22322 205051
Santo Stefano del Sole AV 16 2208 207259
Montoro AV 17 19671 226930
Battipaglia SA 17 50786 277716
Salerno SA 17 135261 412977
Aiello del Sabato AV 18 3958 416935
Campagna SA 18 16703 433638
Cesinali AV 18 2584 436222
Sorbo Serpico AV 18 583 436805
Contrada AV 18 3053 439858
Salza Irpina AV 18 772 440630
Eboli SA 18 40115 480745
Montemarano AV 19 2851 483596
Nusco AV 19 4203 487799
Chiusano di San Domenico AV 20 2277 490076
San Potito Ultra AV 20 1558 491634
Atripalda AV 20 11020 502654
Castelvetere sul Calore AV 20 1615 504269
Parolise AV 20 663 504932
Vietri sul Mare SA 20 7902 512834

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km N of Battipaglia (50786 inhabitants)
17 Km NE of Salerno (135261 inhabitants)
20 Km E of Cava de' Tirreni (53659 inhabitants)
21 Km SE of Avellino (54857 inhabitants)
35 Km E of Scafati (50787 inhabitants)
39 Km E of Castellammare di Stabia (66466 inhabitants)
43 Km S of Benevento (60091 inhabitants)
48 Km E of Torre del Greco (86275 inhabitants)
50 Km E of Portici (55274 inhabitants)
50 Km E of Ercolano (53709 inhabitants)
52 Km E of Acerra (59573 inhabitants)
56 Km E of Afragola (65057 inhabitants)
57 Km E of Casoria (77642 inhabitants)
58 Km E of Napoli (974074 inhabitants)
62 Km SE of Caserta (76326 inhabitants)
65 Km E of Giugliano in Campania (122974 inhabitants)
65 Km E of Marano di Napoli (59874 inhabitants)
66 Km E of Aversa (53047 inhabitants)
72 Km E of Pozzuoli (81661 inhabitants)
75 Km W of Potenza (67122 inhabitants)
94 Km SW of Foggia (151991 inhabitants)
99 Km SW of Cerignola (58396 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours)

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows 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
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 2.1 2021-01-13
07:58:19
40.76 14.94 10 2021-01-13
08:09:52
Sala Sismica INGV-Roma 86217401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-13 07:58:19 ± 0.11
Latitude 40.76 ± 0.00
Longitude 14.94 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86217401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 490
Semi-minor axis of confidence ellipse (meter) 433
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 51
Circular confidence region, given by single value of horizontal uncertainty (meter) 490
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.52071
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 14
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 86217401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-13 08:09:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CR.STON.BHZ. 2021-01-13T07:59:48.96 3.0 undecidable manual Sg 6.84 0
IV.MNTP.HNZ. 2021-01-13T07:59:31.06 3.0 undecidable manual Sn -3.43 0
IV.IVPL.HHZ. 2021-01-13T07:59:29.99 3.0 undecidable manual Sg 2.5 0
IV.IMOL.HNZ. 2021-01-13T07:59:24.46 3.0 negative manual Pn -0.31 0
IV.COR1.EHZ. 2021-01-13T07:59:13.21 3.0 undecidable manual Pn 3.44 0
IV.SGRT.HHZ. 2021-01-13T07:58:41.82 3.0 positive manual P 0.36 0
OT.OT05.EHZ. 2021-01-13T07:58:38.78 3.0 negative manual P -0.83 0
IV.MELA.HHZ. 2021-01-13T07:58:38.86 3.0 negative manual P 0.18 0
IV.CMPR.HHZ. 2021-01-13T07:58:37.60 0.3 undecidable manual S 148 0.5207 50 0.23 67
IV.CDRU.HHZ. 2021-01-13T07:58:33.40 0.3 undecidable manual S 134 0.3876 50 -0.02 72
IV.SGO.HHZ. 2021-01-13T07:58:32.20 0.3 undecidable manual S 125 0.3435 50 0.07 72
IV.SNAL.HHZ. 2021-01-13T07:58:30.02 0.3 undecidable manual S 51 0.2653 50 0.22 71
IV.CMPR.HHZ. 2021-01-13T07:58:29.50 0.3 undecidable manual P 148 0.5207 50 -0.21 67
IX.SALI.HNZ.01 2021-01-13T07:58:29.77 0.3 undecidable manual S 47 0.2518 50 0.37 69
IV.PSB1.HHZ. 2021-01-13T07:58:28.82 0.3 undecidable manual P 349 0.4739 50 -0.09 70
IV.MRLC.HHZ. 2021-01-13T07:58:28.18 0.3 undecidable manual P 90 0.4182 50 0.22 69
IV.CDRU.HHZ. 2021-01-13T07:58:27.17 0.1 undecidable manual P 134 0.3876 50 -0.26 91
IV.MCRV.HHZ. 2021-01-13T07:58:27.07 0.3 undecidable manual S 82 0.1772 117 0.16 73
IV.VTIR.HHZ. 2021-01-13T07:58:27.90 0.1 undecidable manual P 277 0.3903 50 0.42 88
IV.VBKN.HHZ. 2021-01-13T07:58:27.72 0.3 undecidable manual P 281 0.3894 50 0.25 69
IV.MRB1.HHZ. 2021-01-13T07:58:26.65 0.1 undecidable manual P 4 0.3651 50 -0.39 89
IV.SGO.HHZ. 2021-01-13T07:58:26.46 0.1 undecidable manual P 125 0.3435 50 -0.22 93
IX.NSC3.HNZ.02 2021-01-13T07:58:26.52 0.3 undecidable manual S 58 0.1664 119 -0.01 75
IX.SALI.HNZ.01 2021-01-13T07:58:25.05 0.1 undecidable manual P 47 0.2518 50 -0.06 98
IX.COL3.HHZ.02 2021-01-13T07:58:25.87 0.3 undecidable manual P 103 0.3067 50 -0.18 71
IV.SNAL.HHZ. 2021-01-13T07:58:25.25 0.1 undecidable manual P 51 0.2653 50 -0.09 97
IX.LGS3.HNZ.01 2021-01-13T07:58:24.47 0.1 undecidable manual P 10 0.232 50 -0.29 94
IX.NSC3.HNZ.02 2021-01-13T07:58:23.48 0.1 undecidable manual P 58 0.1664 119 0.03 100
IV.MCRV.HHZ. 2021-01-13T07:58:23.76 0.1 undecidable manual P 82 0.1772 117 0.09 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCRV.HHE. ML:2.3 0.00154 0.14 AML other m 2021-01-13T07:58:27.50
IV.SNAL.HHN. ML:2.3 0.0009565 0.34 AML other m 2021-01-13T07:58:30.65
IV.SNAL.HNN. ML:2.2 0.0008655 0.32 AML other m 2021-01-13T07:58:30.65
IV.MCRV.HHN. ML:2.3 0.0014484072 0.096 AML other m 2021-01-13T07:58:27.48
IV.SNAL.HHE. ML:2 0.0005260819 0.2048 AML other m 2021-01-13T07:58:30.67
IV.SNAL.HNE. ML:2.1 0.00062910485 0.256 AML other m 2021-01-13T07:58:30.45
IV.SGO.HHN. ML:2.1 0.000455 0.12 AML other m 2021-01-13T07:58:32.72
IV.SGO.HHE. ML:1.9 0.00028 0.14 AML other m 2021-01-13T07:58:32.78
IV.SGO.HNE. ML:1.6 0.000155369715 0.2112 AML other m 2021-01-13T07:58:32.75
IV.SGO.HNN. ML:2 0.00040936255 0.128 AML other m 2021-01-13T07:58:32.73
IV.CDRU.HHE. ML:2.2 0.0005755 0.1 AML other m 2021-01-13T07:58:34.31
IV.CDRU.HHN. ML:2 0.0003157441 0.2816 AML other m 2021-01-13T07:58:33.71
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol 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 full SEED format Download