INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 2.1 on date 10-08-2018 and time 02:20:56 (Italy) in region 5 km S Savignano Irpino (AV)

A magnitude ML 2.1 earthquake occured in region: 5 km S Savignano Irpino (AV), on

  • 10-08-2018 00:20:56 (UTC)
  • 10-08-2018 02:20:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.18, 15.17 at 28 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
Savignano Irpino AV 5 1140 1140
Zungoli AV 6 1099 2239
Villanova del Battista AV 7 1690 3929
Ariano Irpino AV 7 22700 26629
Monteleone di Puglia FG 8 1021 27650
Greci AV 8 691 28341
Panni FG 10 804 29145
Montaguto AV 10 423 29568
Montecalvo Irpino AV 12 3725 33293
Flumeri AV 12 2963 36256
Anzano di Puglia FG 12 1284 37540
San Sossio Baronia AV 13 1643 39183
Melito Irpino AV 13 1920 41103
Accadia FG 14 2376 43479
San Nicola Baronia AV 14 771 44250
Orsara di Puglia FG 14 2767 47017
Scampitella AV 14 1234 48251
Vallesaccarda AV 15 1386 49637
Castel Baronia AV 15 1129 50766
Castelfranco in Miscano BN 15 916 51682
Casalbore AV 15 1800 53482
Grottaminarda AV 15 8137 61619
Ginestra degli Schiavoni BN 15 476 62095
Trevico AV 16 993 63088
Faeto FG 16 627 63715
Bovino FG 16 3309 67024
Celle di San Vito FG 16 166 67190
Bonito AV 17 2448 69638
Buonalbergo BN 17 1730 71368
Carife AV 17 1408 72776
Vallata AV 17 2714 75490
Sant'Agata di Puglia FG 18 1959 77449
Sturno AV 18 3080 80529
Castelluccio Valmaggiore FG 18 1318 81847
Deliceto FG 19 3828 85675
Sant'Arcangelo Trimonte BN 20 573 86248
Frigento AV 20 3780 90028

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Benevento (60091 inhabitants)
43 Km NE of Avellino (54857 inhabitants)
44 Km SW of Foggia (151991 inhabitants)
59 Km SW of San Severo (53905 inhabitants)
62 Km W of Cerignola (58396 inhabitants)
66 Km N of Battipaglia (50786 inhabitants)
66 Km NE of Salerno (135261 inhabitants)
66 Km NE of Cava de' Tirreni (53659 inhabitants)
71 Km E of Caserta (76326 inhabitants)
72 Km E of Acerra (59573 inhabitants)
73 Km NE of Scafati (50787 inhabitants)
78 Km E of Afragola (65057 inhabitants)
79 Km NE of Portici (55274 inhabitants)
79 Km NE of Castellammare di Stabia (66466 inhabitants)
80 Km SW of Manfredonia (57279 inhabitants)
80 Km E of Casoria (77642 inhabitants)
80 Km NW of Potenza (67122 inhabitants)
81 Km NE of Torre del Greco (86275 inhabitants)
81 Km NE of Ercolano (53709 inhabitants)
84 Km E of Aversa (53047 inhabitants)
86 Km E of Napoli (974074 inhabitants)
86 Km E of Giugliano in Campania (122974 inhabitants)
88 Km E of Marano di Napoli (59874 inhabitants)
94 Km W of Barletta (94814 inhabitants)
94 Km W of Andria (100440 inhabitants)
98 Km E of Pozzuoli (81661 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.
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
Rev 100 ML 2.1 2018-08-10
00:20:56
41.18 15.17 28 2018-08-10
00:28:03
Sala Sismica INGV-Roma 59573571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-10 00:20:56 ± 0.14
Latitude 41.18 ± 0.00
Longitude 15.17 ± 0.01
Depth (km) 28 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 59573571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 658
Semi-minor axis of confidence ellipse (meter) 266
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 660
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41099
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 10
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 40
Type of magnitude ML
Reference to an origin 59573571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-10 00:28:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FRES.HHZ. 2018-08-10T00:21:25.24 3.0 undecidable manual S -0.01 0
IV.MSAG.HHZ. 2018-08-10T00:21:25.50 3.0 undecidable manual S 2.19 0
IV.INTR.HHZ. 2018-08-10T00:21:21.68 3.0 positive manual Pg 3.87 0
IV.SGRT.HHZ. 2018-08-10T00:21:21.92 3.0 undecidable manual S -0.05 0
IV.VITU.HHZ. 2018-08-10T00:21:12.23 0.3 undecidable manual S 270 0.4074 116 0.36 67
IV.TRIV.HHZ. 2018-08-10T00:21:10.69 3.0 positive manual P -0.11 0
IV.PALZ.HHZ. 2018-08-10T00:21:10.40 3.0 undecidable manual P 0.41 0
IV.SGG.HHZ. 2018-08-10T00:21:09.19 3.0 undecidable manual P 0.13 0
IV.APRC.HHZ. 2018-08-10T00:21:09.15 3.0 negative manual P -0.5 0
IV.SNAL.HHZ. 2018-08-10T00:21:08.21 0.3 undecidable manual S 174 0.2572 130 0.08 73
IV.MTMR.EHZ. 2018-08-10T00:21:08.77 0.3 undecidable manual S 206 0.2923 126 -0.17 71
IV.CIGN.HHZ. 2018-08-10T00:21:07.10 3.0 undecidable manual P -0.01 0
IV.MOCO.HHZ. 2018-08-10T00:21:06.54 0.3 undecidable manual S 357 0.1889 140 -0.14 73
IV.MRB1.HHZ. 2018-08-10T00:21:06.04 0.6 undecidable manual S 249 0.1646 144 -0.19 49
IV.MELA.HHZ. 2018-08-10T00:21:06.81 3.0 negative manual P -0.64 0
IV.MCRV.HHZ. 2018-08-10T00:21:06.00 3.0 undecidable manual P 0.41 0
IV.CAFE.HHZ. 2018-08-10T00:21:06.14 0.1 undecidable manual S 162 0.161 144 -0.03 100
IV.GATE.HHZ. 2018-08-10T00:21:05.31 0.3 undecidable manual P 329 0.3849 118 0.4 67
IV.SACR.HHZ. 2018-08-10T00:21:05.12 0.1 negative manual P 302 0.411 116 -0.19 93
IV.SGTA.HHZ. 2018-08-10T00:21:05.95 0.3 undecidable manual S 108 0.152 146 -0.08 74
IV.VITU.HHZ. 2018-08-10T00:21:05.38 0.1 undecidable manual P 270 0.4074 116 0.12 94
IV.BIOG.HHZ. 2018-08-10T00:21:04.95 0.3 undecidable manual S 302 0.0351 171 0.21 74
IV.SNAL.HHZ. 2018-08-10T00:21:03.18 0.1 negative manual P 174 0.2572 130 0.09 98
IV.MTMR.EHZ. 2018-08-10T00:21:03.50 0.1 positive manual P 206 0.2923 126 -0.06 97
IV.CAFE.HHZ. 2018-08-10T00:21:02.05 0.1 negative manual P 162 0.161 144 0.09 100
IV.MOCO.HHZ. 2018-08-10T00:21:02.21 0.1 positive manual P 357 0.1889 140 -0.05 100
IV.MRB1.HHZ. 2018-08-10T00:21:01.78 0.1 positive manual P 249 0.1646 144 -0.22 97
IV.SGTA.HHZ. 2018-08-10T00:21:01.97 0.1 negative manual P 108 0.152 146 0.09 100
IV.BIOG.HHZ. 2018-08-10T00:21:00.97 0.1 undecidable manual P 302 0.0351 171 -0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BIOG.HHE. ML:2.5 0.00192 1.06 AML other m 2018-08-10T00:21:05.62
IV.BIOG.HNN. ML:2.7 0.00275 1.64 AML other m 2018-08-10T00:21:06.98
IV.BIOG.HHN. ML:2.8 0.003365 1.62 AML other m 2018-08-10T00:21:06.99
IV.BIOG.HNE. ML:2.7 0.00255 0.4 AML other m 2018-08-10T00:21:06.03
IV.CAFE.HNE. ML:2.3 0.0009465 0.5 AML other m 2018-08-10T00:21:06.26
IV.SGTA.HHE. ML:2.2 0.000656 1.02 AML other m 2018-08-10T00:21:06.88
IV.SGTA.HNE. ML:2.1 0.000596 1 AML other m 2018-08-10T00:21:06.38
IV.SGTA.HHN. ML:2.1 0.0005805 0.58 AML other m 2018-08-10T00:21:06.11
IV.SGTA.HNN. ML:2.1 0.0005605 0.58 AML other m 2018-08-10T00:21:06.12
IV.MOCO.HHE. ML:2.1 0.000541 0.54 AML other m 2018-08-10T00:21:06.91
IV.MOCO.HNE. ML:2.1 0.0005325 0.56 AML other m 2018-08-10T00:21:06.92
IV.CAFE.HHE. ML:2.4 0.001025 0.44 AML other m 2018-08-10T00:21:07.28
IV.SNAL.HHE. ML:2.2 0.000562 0.26 AML other m 2018-08-10T00:21:08.36
IV.SNAL.HNE. ML:2.2 0.000514 0.64 AML other m 2018-08-10T00:21:08.36
IV.SNAL.HNN. ML:2 0.000359 1.22 AML other m 2018-08-10T00:21:08.23
IV.SNAL.HHN. ML:2 0.000378 1.24 AML other m 2018-08-10T00:21:08.22
IV.MTMR.EHE. ML:1.9 0.000242 1.44 AML other m 2018-08-10T00:21:09.09
IV.CAFE.HHN. ML:2 0.000455 0.26 AML other m 2018-08-10T00:21:09.10
IV.CAFE.HNN. ML:2 0.000424 0.24 AML other m 2018-08-10T00:21:09.23
IV.MTMR.EHN. ML:1.9 0.000268 1.58 AML other m 2018-08-10T00:21:09.04
IV.MRB1.HHN. ML:2.2 0.0007905 1.52 AML other m 2018-08-10T00:21:10.88
IV.MRB1.HNN. ML:2.2 0.0008205 1.5 AML other m 2018-08-10T00:21:10.88
IV.MOCO.HHN. ML:1.8 0.0002815 0.3 AML other m 2018-08-10T00:21:10.82
IV.MOCO.HNN. ML:1.8 0.0002905 0.32 AML other m 2018-08-10T00:21:10.82
IV.MCRV.HHE. ML:2 0.000253 0.64 AML other m 2018-08-10T00:21:12.69
IV.MCRV.HHN. ML:2.1 0.000285 0.14 AML other m 2018-08-10T00:21:13.25
IV.SACR.HHE. ML:1.4 6.675E-5 1.26 AML other m 2018-08-10T00:21:13.34
IV.MRB1.HNE. ML:2.2 0.000654 0.52 AML other m 2018-08-10T00:21:14.44
IV.MRB1.HHE. ML:2.2 0.0006495 0.52 AML other m 2018-08-10T00:21:14.44
IV.GATE.HHN. ML:1.3 5.035E-5 0.46 AML other m 2018-08-10T00:21:14.53
IV.MTMR.HNN. ML:2.5 0.001045 0.4 AML other m 2018-08-10T00:21:14.67
IV.MTMR.HNE. ML:2.9 0.0027 0.42 AML other m 2018-08-10T00:21:15.32
IV.VITU.HHN. ML:1.9 0.000192 0.24 AML other m 2018-08-10T00:21:15.33
IV.SACR.HHN. ML:1.5 6.935E-5 0.48 AML other m 2018-08-10T00:21:15.56
IV.VITU.HHE. ML:1.9 0.000193 0.38 AML other m 2018-08-10T00:21:16.22
IV.MELA.HHE. ML:2.2 0.0002645 1.7 AML other m 2018-08-10T00:21:17.08
IV.MELA.HNE. ML:2.2 0.000278 1.68 AML other m 2018-08-10T00:21:17.09
IV.MELA.HNN. ML:2.2 0.000312 0.9 AML other m 2018-08-10T00:21:17.14
IV.MELA.HHN. ML:2.2 0.0002895 0.9 AML other m 2018-08-10T00:21:17.68
IV.CIGN.HHN. ML:1.1 2.63E-5 1.72 AML other m 2018-08-10T00:21:18.93
IV.GATE.HHE. ML:1.3 5.7E-5 0.84 AML other m 2018-08-10T00:21:20.54
IV.APRC.HHN. ML:1.9 0.0001075 0.3 AML other m 2018-08-10T00:21:21.53
IV.APRC.HHE. ML:1.8 0.0001063 1.32 AML other m 2018-08-10T00:21:21.06
IV.SGG.HHN. ML:1.7 7.74E-5 0.5 AML other m 2018-08-10T00:21:22.34
IV.PALZ.HHN. ML:2.1 0.0001815 0.76 AML other m 2018-08-10T00:21:22.59
IV.PALZ.HHE. ML:2.2 0.0002345 0.68 AML other m 2018-08-10T00:21:22.93
IV.SGRT.HHE. ML:2 0.0001265 0.2 AML other m 2018-08-10T00:21:25.15
IV.SGRT.HHN. ML:2 0.00011805 0.5 AML other m 2018-08-10T00:21:25.43
IV.TRIV.HHN. ML:1.6 5.245E-5 0.94 AML other m 2018-08-10T00:21:27.66
IV.CIGN.HHE. ML:1.2 3.125E-5 0.38 AML other m 2018-08-10T00:21:27.98
IV.SGG.HHE. ML:1.7 6.905E-5 1.3 AML other m 2018-08-10T00:21:28.96
IV.TRIV.HHE. ML:1.7 5.77E-5 0.42 AML other m 2018-08-10T00:21:28.90
IV.FRES.HHE. ML:1.9 8.22E-5 1.06 AML other m 2018-08-10T00:21:30.82
IV.FRES.HHN. ML:1.7 5.21E-5 1.56 AML other m 2018-08-10T00:21:33.01
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://cnt.rm.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