Earthquake with magnitude of ML 2.1 on date 09-04-2019 and time 03:43:26 (Italy) in region 3 km N Castro dei Volsci (FR)

A magnitude ML 2.1 earthquake occured in region: 3 km N Castro dei Volsci (FR), on

  • 09-04-2019 01:43:26 (UTC)
  • 09-04-2019 03:43:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.54, 13.4 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
Pofi FR 4 4204 4204
Castro dei Volsci FR 4 4781 8985
Arnara FR 5 2309 11294
Ceccano FR 6 23565 34859
Villa Santo Stefano FR 7 1720 36579
Ripi FR 9 5270 41849
Amaseno FR 9 4368 46217
Giuliano di Roma FR 10 2400 48617
Torrice FR 10 4816 53433
Ceprano FR 10 8897 62330
Vallecorsa FR 11 2643 64973
Strangolagalli FR 11 2491 67464
Falvaterra FR 11 554 68018
Pastena FR 11 1462 69480
Prossedi LT 11 1202 70682
Frosinone FR 12 46323 117005
Boville Ernica FR 13 8737 125742
Patrica FR 14 3171 128913
San Giovanni Incarico FR 14 3336 132249
Monte San Giovanni Campano FR 15 12929 145178
Fontana Liri FR 15 2953 148131
Lenola LT 15 4189 152320
Arce FR 16 5756 158076
Supino FR 16 4873 162949
Roccasecca dei Volsci LT 17 1146 164095
Rocca d'Arce FR 17 959 165054
Pico FR 17 2888 167942
Veroli FR 17 20560 188502
Colfelice FR 18 1932 190434
Maenza LT 18 3074 193508
Sonnino LT 19 7520 201028
Priverno LT 19 14525 215553
Morolo FR 20 3257 218810
Roccagorga LT 20 4591 223401
Campodimele LT 20 622 224023

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Latina (125985 inhabitants)
54 Km E of Velletri (53303 inhabitants)
62 Km E of Aprilia (73446 inhabitants)
65 Km E of Anzio (54211 inhabitants)
68 Km SE of Tivoli (56533 inhabitants)
76 Km SE of Guidonia Montecelio (88673 inhabitants)
76 Km E of Pomezia (62966 inhabitants)
85 Km E of Roma (2864731 inhabitants)
90 Km S of L'Aquila (69753 inhabitants)
93 Km NW of Aversa (53047 inhabitants)
94 Km NW of Caserta (76326 inhabitants)
96 Km NW of Giugliano in Campania (122974 inhabitants)
97 Km NW of Pozzuoli (81661 inhabitants)
97 Km NW of Marano di Napoli (59874 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 2019-04-09
01:43:26
41.54 13.4 10 2019-04-09
01:53:02
Sala Sismica INGV-Roma 67392441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-09 01:43:26 ± 0.1
Latitude 41.54 ± 0.01
Longitude 13.40 ± 0.00
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 67392441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 746
Semi-minor axis of confidence ellipse (meter) 242
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 173
Circular confidence region, given by single value of horizontal uncertainty (meter) 750
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.73924
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 20
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 67392441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-09 01:53:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CESI.HHZ. 2019-04-09T01:43:55.04 3.0 undecidable manual P 1.71 0
IV.RM33.EHZ. 2019-04-09T01:43:47.48 3.0 negative manual P 1.89 0
IV.VIVA.HHZ. 2019-04-09T01:43:45.44 0.6 undecidable manual S 294 0.5117 50 0.8 38
IV.PAOL.HHZ. 2019-04-09T01:43:44.42 3.0 undecidable manual P -2.68 0
IV.CERT.HHZ. 2019-04-09T01:43:44.89 0.6 undecidable manual S 323 0.5126 50 0.23 45
IV.PTQR.HHZ. 2019-04-09T01:43:43.98 0.3 undecidable manual S 0 0.482 50 0.22 68
IV.RCAV.EHZ. 2019-04-09T01:43:43.36 0.6 undecidable manual S 313 0.4551 50 0.4 44
IT.OPI.HGE. 2019-04-09T01:43:42.03 0.3 undecidable manual S 54 0.402 50 0.65 61
IV.FAGN.HHZ. 2019-04-09T01:43:41.27 1.0 undecidable manual P 11 0.7392 50 0.33 21
IV.VVLD.HHZ. 2019-04-09T01:43:40.17 0.3 undecidable manual S 27 0.3714 50 -0.3 68
IV.LATB.EHZ. 2019-04-09T01:43:39.00 0.3 undecidable manual S 262 0.3274 50 -0.16 71
IV.MTCE.HHZ. 2019-04-09T01:43:39.74 0.6 undecidable manual P 315 0.6853 50 -0.28 43
IV.RMP.HHZ. 2019-04-09T01:43:38.75 0.6 undecidable manual P 298 0.5846 50 0.46 42
IV.RNI2.HHZ. 2019-04-09T01:43:38.88 0.3 undecidable manual P 74 0.5891 50 0.51 62
IV.POFI.HHZ. 2019-04-09T01:43:38.85 0.6 undecidable manual S 53 0.2959 50 0.61 42
IV.INTR.HHZ. 2019-04-09T01:43:38.36 0.3 undecidable manual P 39 0.6052 50 -0.29 65
IV.VIVA.HHZ. 2019-04-09T01:43:37.10 0.3 undecidable manual P 294 0.5117 50 0.04 70
IV.MODR.HHZ. 2019-04-09T01:43:36.91 0.3 undecidable manual P 137 0.5342 50 -0.53 62
IV.RCAV.EHZ. 2019-04-09T01:43:36.04 0.3 undecidable manual P 313 0.4551 50 -0.05 71
IV.CERA.HHZ. 2019-04-09T01:43:36.54 0.6 undecidable manual P 83 0.4694 50 0.21 45
IV.GUAR.HHZ. 2019-04-09T01:43:36.60 0.6 undecidable manual S 346 0.2626 50 -0.64 42
IV.PTQR.HHZ. 2019-04-09T01:43:36.25 0.1 undecidable manual P 0 0.482 50 -0.29 89
IV.CERT.HHZ. 2019-04-09T01:43:36.22 0.6 undecidable manual P 323 0.5126 50 -0.84 37
IT.OPI.HGE. 2019-04-09T01:43:35.27 0.3 undecidable manual P 54 0.402 50 0.1 70
IV.VVLD.HHZ. 2019-04-09T01:43:34.35 0.1 undecidable manual P 27 0.3714 50 -0.3 91
IV.LRP.EHE. 2019-04-09T01:43:34.13 0.3 undecidable manual S 53 0.179 116 -0.22 72
IV.POFI.HHZ. 2019-04-09T01:43:33.19 0.3 undecidable manual P 53 0.2959 50 -0.17 71
IV.LATB.EHZ. 2019-04-09T01:43:33.62 0.6 undecidable manual P 262 0.3274 50 -0.27 46
IV.MCI.EHZ. 2019-04-09T01:43:33.61 0.6 undecidable manual P 99 0.3166 50 -0.1 48
IV.GUAR.HHZ. 2019-04-09T01:43:32.73 0.1 positive manual P 346 0.2626 50 -0.05 98
IV.GIUL.HHZ. 2019-04-09T01:43:32.17 0.6 undecidable manual S 280 0.107 129 0.18 49
IV.LRP.EHE. 2019-04-09T01:43:31.10 0.1 undecidable manual P 53 0.179 116 -0.01 100
IV.LIK.EHZ.01 2019-04-09T01:43:30.36 0.1 positive manual P 108 0.1295 124 0.22 97
IV.GIUL.HHZ. 2019-04-09T01:43:29.90 0.1 positive manual P 280 0.107 129 0.15 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GIUL.HHE. ML:2.1 0.0014471895 0.14 AML other m 2019-04-09T01:43:32.43
IV.GIUL.HHN. ML:2.1 0.0013715625 0.2 AML other m 2019-04-09T01:43:32.65
IV.LIK.EHE.01 ML:2.7 0.0053068965 0.3 AML other m 2019-04-09T01:43:37.32
IV.LIK.EHN.01 ML:2.5 0.003479963 0.44 AML other m 2019-04-09T01:43:37.59
IV.GUAR.HHE. ML:2.2 0.0007861759 0.36 AML other m 2019-04-09T01:43:37.31
IV.GUAR.HHN. ML:2.5 0.001740444 0.4 AML other m 2019-04-09T01:43:37.59
IV.POFI.HHE. ML:1.7 0.00020365855 0.28 AML other m 2019-04-09T01:43:39.49
IV.POFI.HHN. ML:1.6 0.0001791079 0.22 AML other m 2019-04-09T01:43:40.23
IV.POFI.HNE. ML:0 1.8597965E-7 0.28 AML other m 2019-04-09T01:43:39.94
IV.MCI.EHE. ML:2.5 0.00126313175 0.16 AML other m 2019-04-09T01:43:41.51
IV.MCI.EHN. ML:2.6 0.001468853 0.2 AML other m 2019-04-09T01:43:41.43
IV.LATB.EHE. ML:1.2 5.3352325E-5 0.26 AML other m 2019-04-09T01:43:40.63
IV.LATB.EHN. ML:1.3 7.9005785E-5 0.4 AML other m 2019-04-09T01:43:41.39
IV.VVLD.HHE. ML:2.3 0.00064364105 0.28 AML other m 2019-04-09T01:43:40.59
IV.VVLD.HHN. ML:2.2 0.00047466285 0.34 AML other m 2019-04-09T01:43:40.58
IV.RCAV.EHE. ML:2.2 0.0004167742 0.22 AML other m 2019-04-09T01:43:44.43
IV.RCAV.EHN. ML:2.4 0.00073024545 0.26 AML other m 2019-04-09T01:43:45.38
IV.CERT.HHE. ML:2.1 0.0002531191 0.4 AML other m 2019-04-09T01:43:46.12
IV.CERT.HHN. ML:1.8 0.0001257924 0.34 AML other m 2019-04-09T01:43:46.81
IV.PTQR.HHE. ML:2 0.00022240255 0.2 AML other m 2019-04-09T01:43:45.28
IV.PTQR.HHN. ML:2.2 0.0003779875 0.28 AML other m 2019-04-09T01:43:44.72
IV.CERA.HNE. ML:2 0.00028143525 0.38 AML other m 2019-04-09T01:43:53.31
IV.CERA.HNN. ML:1.9 0.00018406315 0.44 AML other m 2019-04-09T01:43:46.88
IV.CERA.HHE. ML:2.1 0.0002894899 0.38 AML other m 2019-04-09T01:43:53.31
IV.CERA.HHN. ML:1.9 0.00018648435 0.44 AML other m 2019-04-09T01:43:46.88
IV.VIVA.HHE. ML:2.9 0.0018659715 0.32 AML other m 2019-04-09T01:43:47.01
IV.VIVA.HHN. ML:2.9 0.0017063235 0.28 AML other m 2019-04-09T01:43:46.73
IV.INTR.HNE. ML:2 0.00018556145 0.7704 AML other m 2019-04-09T01:43:55.14
IV.INTR.HNN. ML:2.1 0.000236606 0.6104 AML other m 2019-04-09T01:43:58.55
IV.INTR.HHE. ML:1.8 0.000106830025 0.6 AML other m 2019-04-09T01:43:51.20
IV.INTR.HHN. ML:2.2 0.00026083685 0.28 AML other m 2019-04-09T01:43:50.28
IV.RMP.HHE. ML:2.6 0.00074393835 0.28 AML other m 2019-04-09T01:43:49.68
IV.RMP.HHN. ML:2.4 0.000490782 0.38 AML other m 2019-04-09T01:43:49.67
IV.RNI2.HHE. ML:1.9 0.0001579176 0.66 AML other m 2019-04-09T01:44:01.99
IV.RNI2.HHN. ML:1.8 0.00012832683 0.64 AML other m 2019-04-09T01:43:58.18
IV.RNI2.HNE. ML:2 0.000170997 0.68 AML other m 2019-04-09T01:44:01.99
IV.RNI2.HNN. ML:1.9 0.00013839971 0.62 AML other m 2019-04-09T01:43:58.19
IV.MTCE.HHE. ML:1.8 9.1359375E-5 0.36 AML other m 2019-04-09T01:43:52.58
IV.MTCE.HHN. ML:1.8 8.881333E-5 0.34 AML other m 2019-04-09T01:43:54.08
IV.FAGN.HHE. ML:2.3 0.0002802178 0.54 AML other m 2019-04-09T01:44:07.58
IV.FAGN.HHN. ML:2.2 0.0001974147 0.46 AML other m 2019-04-09T01:44:05.78
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