Earthquake with magnitude of ML 2.1 on date 18-04-2018 and time 11:25:38 (Italy) in region 1 km S Alvignano (CE)

A magnitude ML 2.1 earthquake occured in region: 1 km S Alvignano (CE), on

  • 18-04-2018 09:25:38 (UTC)
  • 18-04-2018 11:25:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.24, 14.34 at 8 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Alvignano CE 1 4824 4824
Liberi CE 5 1153 5977
Dragoni CE 5 2108 8085
Castel di Sasso CE 6 1171 9256
Ruviano CE 7 1655 10911
Caiazzo CE 7 5595 16506
Piana di Monte Verna CE 8 2390 18896
Pontelatone CE 9 1703 20599
Formicola CE 9 1488 22087
Puglianello BN 10 1349 23436
Alife CE 10 7616 31052
Baia e Latina CE 10 2197 33249
Roccaromana CE 11 856 34105
Amorosi BN 11 2797 36902
Castel Campagnano CE 11 1581 38483
Gioia Sannitica CE 11 3638 42121
Limatola BN 12 4073 46194
Camigliano CE 12 1943 48137
San Potito Sannitico CE 12 1925 50062
Bellona CE 12 6053 56115
Giano Vetusto CE 13 647 56762
Faicchio BN 13 3634 60396
Vitulazio CE 13 7420 67816
Castel Morrone CE 13 3858 71674
Pastorano CE 13 3033 74707
San Salvatore Telesino BN 13 3999 78706
Pietramelara CE 13 4722 83428
Piedimonte Matese CE 14 11297 94725
Dugenta BN 15 2798 97523
Pignataro Maggiore CE 15 6084 103607
Castello del Matese CE 15 1494 105101
Rocchetta e Croce CE 15 460 105561
Sant'Angelo d'Alife CE 16 2270 107831
Riardo CE 16 2321 110152
Melizzano BN 16 1858 112010
Telese Terme BN 16 7486 119496
San Gregorio Matese CE 17 988 120484
Raviscanina CE 17 1319 121803
Casagiove CE 17 13651 135454
San Prisco CE 17 12345 147799
Calvi Risorta CE 18 5707 153506
Castelvenere BN 18 2562 156068
San Lorenzello BN 18 2227 158295
Pietravairano CE 18 2984 161279
Capua CE 18 18820 180099
Caserta CE 18 76326 256425
Frasso Telesino BN 18 2318 258743
Cusano Mutri BN 18 4091 262834
Casapulla CE 18 8628 271462
Valle di Maddaloni CE 19 2742 274204
Solopaca BN 19 3820 278024
Curti CE 19 7132 285156
Santa Maria Capua Vetere CE 19 32802 317958
Cerreto Sannita BN 19 3940 321898
San Tammaro CE 20 5549 327447
Macerata Campania CE 20 10609 338056

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km N of Caserta (76326 inhabitants)
31 Km NE of Aversa (53047 inhabitants)
32 Km N of Acerra (59573 inhabitants)
35 Km N of Afragola (65057 inhabitants)
36 Km NE of Giugliano in Campania (122974 inhabitants)
37 Km N of Casoria (77642 inhabitants)
39 Km W of Benevento (60091 inhabitants)
40 Km NE of Marano di Napoli (59874 inhabitants)
45 Km N of Napoli (974074 inhabitants)
46 Km N of Portici (55274 inhabitants)
47 Km N of Ercolano (53709 inhabitants)
48 Km NE of Pozzuoli (81661 inhabitants)
50 Km N of Torre del Greco (86275 inhabitants)
52 Km NW of Avellino (54857 inhabitants)
57 Km N of Scafati (50787 inhabitants)
61 Km N of Castellammare di Stabia (66466 inhabitants)
67 Km NW of Cava de' Tirreni (53659 inhabitants)
71 Km NW of Salerno (135261 inhabitants)
88 Km NW of Battipaglia (50786 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 past 72 hours (3 days) from the time this page has been generated. 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 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.
Significant earthquakes since 1000 AD until 2006

Significant earthquakes since 1000 AD until 2006 *

This map shows the epicenters of the historical earthquakes catalogue CPT11 (Catalogo Parametrico dei Terremoti Italiani, 2011 version) with estimated magnitude ≥ 5.0 since 1000 AD until 2006. 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
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
Rev 1000 ML 2.1 2018-04-18
09:25:38
41.24 14.34 8 2019-04-24
14:49:27
Bollettino Sismico Italiano INGV 55871651
Rev 100 ML 2.1 2018-04-18
09:25:38
41.23 14.34 8 2018-04-18
09:45:49
Sala Sismica INGV-Roma 55776501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-04-18 09:25:38 ± 0.06
Latitude 41.24 ± 0.00
Longitude 14.34 ± 0.00
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 55871651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 376
Semi-minor axis of confidence ellipse (meter) 268
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 23
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.55308
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 55776501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-04-18 09:45:49

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 31
Type of magnitude ML
Reference to an origin 55871651
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-04-20 13:46:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NDIM.HHZ. 2018-04-18T09:27:34.91 3.0 undecidable manual Sn -5.28 0
IV.EL6.EHZ. 2018-04-18T09:26:49.16 3.0 undecidable manual Sg 1.35 0
IV.HMDC.HHZ. 2018-04-18T09:26:48.18 3.0 positive manual Pn 2.96 0
IV.SNTG.HHZ. 2018-04-18T09:26:47.42 3.0 undecidable manual Sg 0.04 0
IV.CESI.HHZ. 2018-04-18T09:26:46.14 3.0 undecidable manual Sg 3.81 0
IV.PF6.EHZ. 2018-04-18T09:26:46.03 3.0 undecidable manual Sg 3.17 0
IV.FOSV.EHZ. 2018-04-18T09:26:46.61 3.0 undecidable manual Sn -3.12 0
IV.MML1.EHZ. 2018-04-18T09:26:45.12 3.0 undecidable manual Sg 1.07 0
IV.FDMO.HHZ. 2018-04-18T09:26:44.42 3.0 undecidable manual Sg 2.98 0
IV.T1220.EHZ. 2018-04-18T09:26:41.14 3.0 undecidable manual Sn -1.9 0
OB.GAVE.EHZ. 2018-04-18T09:26:38.23 3.0 undecidable manual Sg 2.21 0
CR.STON.BHZ. 2018-04-18T09:26:34.90 3.0 positive manual Pg 6.97 0
IV.PIEI.HHZ. 2018-04-18T09:26:24.09 3.0 negative manual Pn 1.46 0
IV.CAR1.HHZ. 2018-04-18T09:26:19.69 3.0 undecidable manual Pn -0.57 0
IV.RCAV.EHZ. 2018-04-18T09:26:14.95 3.0 undecidable manual S -6.14 0
IV.TDS.HHZ. 2018-04-18T09:26:14.62 3.0 negative manual Pn -2.24 0
IV.MSAG.HHZ. 2018-04-18T09:26:03.36 3.0 positive manual P -1.06 0
IV.GIUL.HHZ. 2018-04-18T09:25:54.13 3.0 undecidable manual P 0
IV.MODR.HHZ. 2018-04-18T09:25:52.35 0.6 undecidable manual S 255 0.3588 50 0.35 45
IV.SACR.HHN. 2018-04-18T09:25:50.79 1.0 undecidable manual S 60 0.3184 50 -0.03 24
IV.PAOL.HHZ. 2018-04-18T09:25:49.23 0.6 undecidable manual S 140 0.268 106 0.21 48
IV.TRIV.HHZ. 2018-04-18T09:25:49.67 0.1 undecidable manual P 17 0.5531 50 0.14 91
IV.RNI2.HNE. 2018-04-18T09:25:48.87 0.3 undecidable manual P 343 0.4865 50 0.46 65
IV.VITU.HHZ. 2018-04-18T09:25:47.69 0.6 undecidable manual S 104 0.2257 108 0.24 48
IV.CERA.HHZ. 2018-04-18T09:25:47.51 0.1 undecidable manual P 326 0.4335 50 0.01 96
IV.MIDA.HHZ. 2018-04-18T09:25:46.84 0.1 positive manual P 351 0.4101 50 -0.25 92
IV.BSSO.HHZ. 2018-04-18T09:25:46.16 0.1 undecidable manual P 32 0.3633 50 -0.14 95
IV.VAGA.HHZ. 2018-04-18T09:25:46.68 0.6 undecidable manual S 336 0.1952 111 0.32 47
IV.MODR.HHZ. 2018-04-18T09:25:45.96 0.1 undecidable manual P 255 0.3588 50 -0.25 93
IV.SGG.HHZ. 2018-04-18T09:25:45.21 0.6 undecidable manual S 11 0.1529 116 0.34 47
IV.SACR.HHN. 2018-04-18T09:25:45.68 0.1 undecidable manual P 60 0.3184 50 0.15 96
IV.PIGN.HNZ. 2018-04-18T09:25:44.03 0.3 undecidable manual S 253 0.125 121 0.1 75
IV.PAOL.HHZ. 2018-04-18T09:25:44.19 0.1 undecidable manual P 140 0.268 106 -0.3 93
IV.VITU.HHZ. 2018-04-18T09:25:43.66 0.1 positive manual P 104 0.2257 108 0.07 99
IV.VAGA.HHZ. 2018-04-18T09:25:42.50 0.1 negative manual P 336 0.1952 111 -0.46 92
IV.PTRJ.HNN. 2018-04-18T09:25:42.82 0.1 undecidable manual P 48 0.1916 111 -0.06 100
IV.PIGN.HNZ. 2018-04-18T09:25:41.66 0.1 negative manual P 253 0.125 121 0.11 100
IV.SGG.HHZ. 2018-04-18T09:25:41.94 0.1 undecidable manual P 11 0.1529 116 -0.16 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PIGN.HHE. ML:2.5 0.003275818 0.2432 AML other m 2018-04-18T09:25:44.31
IV.PIGN.HNE. ML:2.5 0.0032116785 0.2432 AML other m 2018-04-18T09:25:44.31
IV.PIGN.HHN. ML:2.2 0.0019809095 0.2432 AML other m 2018-04-18T09:25:45.40
IV.PIGN.HNN. ML:2.2 0.0019072915 0.2496 AML other m 2018-04-18T09:25:45.41
IV.SGG.HHE. ML:2.4 0.00225 1.56 AML other m 2018-04-18T09:25:46.84
IV.VAGA.HHE. ML:2.2 0.001205 0.52 AML other m 2018-04-18T09:25:48.20
IV.VAGA.HNE. ML:2.2 0.001144 0.52 AML other m 2018-04-18T09:25:48.20
IV.SGG.HHN. ML:2.3 0.001705 1.5 AML other m 2018-04-18T09:25:50.82
IV.SGG.HNN. ML:0 5.0E-9 1.48 AML other m 2018-04-18T09:25:50.82
IV.VITU.HHE. ML:2.4 0.00136 1.08 AML other m 2018-04-18T09:25:51.92
IV.VAGA.HNN. ML:2.5 0.00244 0.9 AML other m 2018-04-18T09:25:52.55
IV.VAGA.HHN. ML:2.6 0.00252 0.9 AML other m 2018-04-18T09:25:52.55
IV.PAOL.HNN. ML:2 0.00056 1.16 AML other m 2018-04-18T09:25:53.91
IV.MODR.HHN. ML:2 0.0003125 1.76 AML other m 2018-04-18T09:25:53.10
IV.MODR.HHE. ML:1.9 0.000265 0.24 AML other m 2018-04-18T09:25:53.87
IV.VITU.HNE. ML:1.9 0.000447 0.4 AML other m 2018-04-18T09:25:54.60
IV.PAOL.HHN. ML:2 0.0005565 1.08 AML other m 2018-04-18T09:25:54.33
IV.VITU.HHN. ML:2.3 0.00134 1.68 AML other m 2018-04-18T09:25:55.06
IV.VITU.HNN. ML:2.3 0.001335 0.76 AML other m 2018-04-18T09:25:55.07
IV.PAOL.HHE. ML:2 0.000542 0.36 AML other m 2018-04-18T09:25:55.26
IV.PAOL.HNE. ML:2 0.0004715 0.34 AML other m 2018-04-18T09:25:55.09
IV.BSSO.HNE. ML:1.9 0.0002745 0.92 AML other m 2018-04-18T09:25:56.13
IV.MIDA.HHN. ML:1.9 0.000215 0.38 AML other m 2018-04-18T09:25:56.51
IV.BSSO.HHN. ML:1.6 0.000156 0.78 AML other m 2018-04-18T09:25:57.10
IV.BSSO.HNN. ML:2 0.0003925 0.8 AML other m 2018-04-18T09:25:57.10
IV.MIDA.HHE. ML:2.1 0.00038 1.24 AML other m 2018-04-18T09:26:02.82
IV.MIDA.HNE. ML:2.1 0.0003785 1.26 AML other m 2018-04-18T09:26:02.83
IV.CERA.HNE. ML:2 0.000283 0.82 AML other m 2018-04-18T09:26:03.04
IV.CERA.HHE. ML:0 0.0002725 1.38 AML other m 2018-04-18T09:26:04.03
IV.CERA.HHN. ML:2 0.000293 0.62 AML other m 2018-04-18T09:26:05.20
IV.CERA.HNN. ML:2 0.000281 0.6 AML other m 2018-04-18T09:26:05.21
IV.BSSO.HHE. ML:1.5 0.0001175 1.26 AML other m 2018-04-18T09:26:09.12
IV.T1220.HNE. ML:3.1 0.000273 1.2 AML other m 2018-04-18T09:26:46.74
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