INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 2.0 on date 20-04-2017 and time 21:29:51 (Italy) in region 8 km NW Finale Emilia (MO)

A magnitude ML 2.0 earthquake occured in region: 8 km NW Finale Emilia (MO), on

  • 20-04-2017 19:29:51 (UTC)
  • 20-04-2017 21:29:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.9, 11.25 at 5 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
Finale Emilia MO 9 15699 15699
San Felice sul Panaro MO 11 10900 26599
Felonica MN 12 1359 27958
Sermide MN 12 6189 34147
Magnacavallo MN 13 1561 35708
Calto RO 13 743 36451
Bondeno FE 13 14655 51106
Poggio Rusco MN 13 6625 57731
Castelmassa RO 14 4252 61983
Castelnovo Bariano RO 14 2762 64745
Mirandola MO 15 23875 88620
Carbonara di Po MN 15 1297 89917
San Giovanni del Dosso MN 15 1248 91165
Villa Poma MN 15 2023 93188
Ficarolo RO 15 2438 95626
Ceneselli RO 15 1719 97345
Medolla MO 15 6308 103653
Camposanto MO 16 3201 106854
Sant'Agostino FE 16 6853 113707
Salara RO 17 1160 114867
Borgofranco sul Po MN 17 784 115651
Schivenoglia MN 17 1203 116854
Bergantino RO 18 2565 119419
Melara RO 18 1803 121222
Pieve di Coriano MN 19 1035 122257
Mirabello FE 19 3266 125523
Gaiba RO 19 1063 126586
San Giacomo delle Segnate MN 19 1639 128225
Cavezzo MO 19 7026 135251
Cento FE 20 35686 170937
Revere MN 20 2521 173458

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km W of Ferrara (133155 inhabitants)
32 Km E of Carpi (70699 inhabitants)
38 Km NE of Modena (184973 inhabitants)
46 Km N of Bologna (386663 inhabitants)
46 Km W of Rovigo (51867 inhabitants)
54 Km E of Reggio nell'Emilia (171345 inhabitants)
63 Km SE of Verona (258765 inhabitants)
71 Km NW of Imola (69797 inhabitants)
74 Km E of Parma (192836 inhabitants)
75 Km SW of Padova (210401 inhabitants)
75 Km SW of Vicenza (112953 inhabitants)
85 Km NW of Faenza (58541 inhabitants)
92 Km NW of Ravenna (159116 inhabitants)
98 Km NW of Forlì (117913 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

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 Date and Time (UTC) Latitude Longitude Magnitude Depth (km) Published time (UTC) Author Location ID
Rev 100 2017-04-20
19:29:51
44.9 11.25 ML 2.0 5 2017-06-07
08:07:31
Sala Sismica INGV-Roma 44147651
Best location and best magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-04-20 19:29:51 ± 0.08
Latitude 44.90 ± 0.00
Longitude 11.25 ± 0.01
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 44147651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 680
Semi-minor axis of confidence ellipse (meter) 450
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 282
Circular confidence region, given by single value of horizontal uncertainty (meter) 680
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.37686
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 20
Magnitude information

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 44147651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-04-20 19:53:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LIK.EHZ.01 2017-04-20T19:31:44.24 3.0 undecidable manual Sg 4.53 0
IV.SAMA.HHZ. 2017-04-20T19:31:33.13 3.0 undecidable manual Sg 6.59 0
IV.T1214.EHZ. 2017-04-20T19:31:16.84 3.0 undecidable manual Sg 6.95 0
IV.T1245.HNZ. 2017-04-20T19:31:11.82 3.0 undecidable manual Sg 4.1 0
IV.T1218.EHZ. 2017-04-20T19:31:11.16 3.0 undecidable manual Sg 0.36 0
IV.PP3.EHZ. 2017-04-20T19:30:36.82 3.0 negative manual Pg 5.15 0
IV.MRB1.HHZ. 2017-04-20T19:30:59.74 3.0 positive manual Pn -4.43 0
IV.LRP.HHZ. 2017-04-20T19:30:45.65 3.0 positive manual Pn -4.87 0
IV.SRES.HHZ. 2017-04-20T19:30:38.00 3.0 undecidable manual Pn -0.6 0
OX.CGRP.HHZ. 2017-04-20T19:30:11.39 0.6 undecidable manual P 21 1.0513 50 -0.41 53
ST.DOSS.HHZ. 2017-04-20T19:30:10.34 0.6 undecidable manual P 357 0.9785 50 -0.22 56
IV.LMD.HHZ. 2017-04-20T19:30:08.51 0.3 undecidable manual P 158 0.8858 50 -0.47 81
IV.ROVR.HHZ. 2017-04-20T19:30:06.63 0.6 undecidable manual P 350 0.7545 50 -0.09 60
IV.MSSA.HHZ. 2017-04-20T19:30:17.05 1.0 undecidable manual P 245 1.367 50 -0.16 26
IV.CRE.HHZ. 2017-04-20T19:30:16.93 1.0 undecidable manual P 158 1.3769 50 -0.45 24
IV.MABI.HHZ. 2017-04-20T19:30:15.95 0.6 positive manual P 336 1.2626 50 0.53 49
ST.GAGG.HHZ. 2017-04-20T19:30:14.20 0.6 undecidable manual P 350 1.1979 50 -0.11 54
IV.ZONE.HHZ. 2017-04-20T19:30:14.10 0.3 undecidable manual P 318 1.1736 50 0.2 81
IV.CTI.HHZ. 2017-04-20T19:30:13.56 0.6 positive manual P 14 1.1781 50 -0.41 51
IV.ZOVE.HNN. 2017-04-20T19:30:03.94 0.6 undecidable manual P 17 0.5747 50 0.28 60
IV.TEOL.HHZ. 2017-04-20T19:30:02.62 0.6 undecidable manual P 33 0.5459 50 -0.55 57
GU.POPM.HHZ. 2017-04-20T19:30:10.11 0.6 positive manual P 203 0.9272 50 0.42 54
IV.MAGA.HHZ. 2017-04-20T19:30:10.65 1.0 undecidable manual P 334 0.9758 50 0.13 29
IV.MTCR.EHZ. 2017-04-20T19:30:09.47 0.6 positive manual P 192 0.8921 50 0.38 55
IV.SALO.HHZ. 2017-04-20T19:30:09.56 0.6 undecidable manual P 325 0.8795 50 0.69 50
IV.SEI.HHZ. 2017-04-20T19:30:08.65 0.3 positive manual P 175 0.8517 50 0.26 86
IV.BRIS.HHZ. 2017-04-20T19:30:07.28 0.6 undecidable manual P 151 0.7698 50 0.28 58
IV.ZCCA.HHZ. 2017-04-20T19:30:03.41 0.3 undecidable manual P 200 0.5855 50 -0.44 87
IV.CAVE.HHZ. 2017-04-20T19:29:55.55 0.6 undecidable manual P 258 0.1808 104 -0.22 66
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHE. ML:1.9 9.385E-5 0.5 AML other m 2017-04-20T19:30:21.67
IV.BRIS.HHN. ML:1.7 6.935E-5 1.72 AML other m 2017-04-20T19:30:22.05
IV.CAVE.HHN. ML:1.9 0.000674 0.14 AML other m 2017-04-20T19:29:58.69
IV.CAVE.HHE. ML:1.8 0.000515 0.66 AML other m 2017-04-20T19:29:58.81
OX.CGRP.HHN. ML:2 7.735E-5 0.72 AML other m 2017-04-20T19:30:30.31
OX.CGRP.HHE. ML:2 7.755E-5 0.48 AML other m 2017-04-20T19:30:34.74
IV.CRE.HHN. ML:1.8 2.965E-5 0.42 AML other m 2017-04-20T19:30:21.27
IV.CRE.HHE. ML:1.6 2.125E-5 0.5 AML other m 2017-04-20T19:30:37.68
IV.CTI.HHN. ML:2.5 0.0002075 0.2 AML other m 2017-04-20T19:30:32.25
IV.CTI.HHE. ML:2.4 0.000176 0.84 AML other m 2017-04-20T19:30:32.36
ST.DOSS.HNN. ML:2.2 0.0001281 1 AML other m 2017-04-20T19:30:28.19
ST.DOSS.HNE. ML:2.2 0.00012915 0.86 AML other m 2017-04-20T19:30:29.09
ST.DOSS.HHN. ML:2.1 0.0001185 0.96 AML other m 2017-04-20T19:30:29.09
ST.DOSS.HHE. ML:2.2 0.0001295 0.9 AML other m 2017-04-20T19:30:27.43
ST.GAGG.HHN. ML:2.2 0.0001095 1.22 AML other m 2017-04-20T19:30:32.22
ST.GAGG.HHE. ML:2.3 0.00012065 1.18 AML other m 2017-04-20T19:30:33.37
IV.LMD.HHE. ML:1.9 7.37E-5 0.6 AML other m 2017-04-20T19:30:24.72
IV.LMD.HHN. ML:1.8 6.955E-5 0.28 AML other m 2017-04-20T19:30:22.85
IV.MABI.HHE. ML:1.7 2.85E-5 0.44 AML other m 2017-04-20T19:30:34.74
IV.MABI.HHN. ML:1.8 3.55E-5 0.56 AML other m 2017-04-20T19:30:34.23
IV.MAGA.HHN. ML:2.7 0.000413 0.44 AML other m 2017-04-20T19:30:27.65
IV.MAGA.HHE. ML:2.8 0.000522 0.34 AML other m 2017-04-20T19:30:27.65
GU.POPM.HHE. ML:1.5 3.075E-5 1.26 AML other m 2017-04-20T19:30:34.34
GU.POPM.HHN. ML:1.7 4.29E-5 0.68 AML other m 2017-04-20T19:30:26.19
IV.RAVA.EHN. ML:2.9 0.007055 0.12 AML other m 2017-04-20T19:29:58.35
IV.RAVA.EHE. ML:2.7 0.00463 0.46 AML other m 2017-04-20T19:29:58.59
IV.ROVR.HHN. ML:2 0.000144 0.52 AML other m 2017-04-20T19:30:20.43
IV.ROVR.HHE. ML:1.8 8.755E-5 0.38 AML other m 2017-04-20T19:30:21.04
IV.SALO.HHN. ML:2.3 0.000211 0.82 AML other m 2017-04-20T19:30:26.67
IV.SALO.HHE. ML:2.1 0.000142 0.48 AML other m 2017-04-20T19:30:26.66
IV.SEI.HHE. ML:1.7 5.345E-5 0.38 AML other m 2017-04-20T19:30:25.42
IV.SEI.HHN. ML:1.8 6.65E-5 0.52 AML other m 2017-04-20T19:30:24.36
IV.TEOL.HHN. ML:1.9 0.000159 0.6 AML other m 2017-04-20T19:30:15.64
IV.TEOL.HHE. ML:2 0.000188 1.04 AML other m 2017-04-20T19:30:16.69
IV.ZCCA.HHN. ML:1.5 6.04E-5 0.42 AML other m 2017-04-20T19:30:27.73
IV.ZCCA.HHE. ML:1.5 5.54E-5 0.36 AML other m 2017-04-20T19:30:22.19
IV.ZONE.HHE. ML:2.3 0.0001305 0.3 AML other m 2017-04-20T19:30:32.23
IV.ZONE.HHN. ML:2.2 0.00010075 0.64 AML other m 2017-04-20T19:30:33.16
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