Earthquake with magnitude of Mw 3.3 on date 27-04-2019 and time 02:44:55 (Italy) in region 2 km SW Piedimonte Etneo (CT)

A magnitude Mw 3.3 earthquake occured in region: 2 km SW Piedimonte Etneo (CT), on

  • 27-04-2019 00:44:55 (UTC)
  • 27-04-2019 02:44:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8, 15.16 at 2 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
Piedimonte Etneo CT 2 3963 3963
Fiumefreddo di Sicilia CT 4 9623 13586
Linguaglossa CT 5 5403 18989
Mascali CT 6 14282 33271
Sant'Alfio CT 6 1582 34853
Calatabiano CT 6 5308 40161
Giarre CT 8 27659 67820
Riposto CT 8 14838 82658
Gaggi ME 9 3184 85842
Milo CT 9 1087 86929
Castiglione di Sicilia CT 10 3215 90144
Motta Camastra ME 11 845 90989
Giardini-Naxos ME 11 9415 100404
Francavilla di Sicilia ME 12 3945 104349
Graniti ME 12 1492 105841
Castelmola ME 12 1088 106929
Taormina ME 12 10960 117889
Santa Venerina CT 13 8592 126481
Zafferana Etnea CT 13 9517 135998
Moio Alcantara ME 15 717 136715
Mongiuffi Melia ME 15 600 137315
Letojanni ME 16 2861 140176
Gallodoro ME 16 367 140543
Malvagna ME 16 733 141276
Roccafiorita ME 17 197 141473
Limina ME 19 836 142309
Forza d'Agrò ME 20 911 143220
Roccella Valdemone ME 20 666 143886

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km N of Acireale (52622 inhabitants)
34 Km N of Catania (314555 inhabitants)
55 Km SW of Reggio di Calabria (183035 inhabitants)
56 Km SW of Messina (238439 inhabitants)
83 Km N of Siracusa (122291 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
Shakemap

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and adjourned progressively as more data become available. See http://shakemap.rm.ingv.it/ for additional information.

The red star indicates the epicenter. The red triangles show the stations of the INGV Italian National Seismic Network and the blue triangles those of the Nationa Accelerometric Network of the Dipartimento della Protezione Civile.

Intensity Shakemap

Intensity Shakemap *

This map shows the distribution of the istrumentally derived intensities. To this purpose, it is used a conversion relation between ground acceleration and velocity, and the Mercalli Modificata (MMI - Modified Mercalli Intensity) scale. In general, the Mercalli intensity scale relies on the effects that the ground shaking produces as reported by an observer.
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap *

This map shows This map shows the distribution of peak ground acceleration expressed as per cent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap *

This map shows the distribution of peak ground velocities expressed in cm/s.
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 3.2 2019-04-27
00:44:55
37.8 15.16 2 2019-08-22
08:25:12
Bollettino Sismico Italiano INGV 71112361
Rev 501 Mw 3.3 2019-04-27
00:44:54
37.81 15.11 3 2019-08-02
13:45:01
TDMT-INGV Revised 69204581
Rev 200 ML 3.3 2019-04-27
00:44:54
37.81 15.11 0 2019-08-02
13:44:49
Gruppo Analisi Dati Sismici, Osservatorio Etneo 68001211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-27 00:44:55 ± 0.11
Latitude 37.80 ± 0.01
Longitude 15.16 ± 0.01
Depth (km) 2 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 71112361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 830
Semi-minor axis of confidence ellipse (meter) 600
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 307
Circular confidence region, given by single value of horizontal uncertainty (meter) 830
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 102
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.47
Epicentral distance of station closest to the epicenter (degree) 0.08813
Epicentral distance of station farthest from the epicenter (degree) 1.1943
Number of stations at which the event was observed 39
Number of stations from which data was used for origin computation 39
Magnitudes information

Mw:3.3

Field Value
Value 3.3
Uncertainty
Num. used stations
Type of magnitude Mw
Reference to an origin 69204581
Agency INGV
Autore TDMT-INGV Revised
Time of creation (UTC) 2019-06-04 15:15:32

ML:3.3

Field Value
Value 3.3
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 68001211
Agency INGV
Autore Gruppo Analisi Dati Sismici, Osservatorio Etneo
Time of creation (UTC) 2019-04-27 01:08:00

ML:3.2

Field Value
Value 3.2
Uncertainty 0.4
Num. used stations 36
Type of magnitude ML
Reference to an origin 71112361
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-02 13:44:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2019-04-27T00:45:20.34 0.3 undecidable manual P 57 1.1943 50 1.56 34
IV.IVPL.HHZ. 2019-04-27T00:45:18.67 0.6 undecidable manual S 346 0.5936 50 0.82 38
IV.HPAC.HHE. 2019-04-27T00:45:17.82 0.1 undecidable manual P 185 1.0954 50 0.73 71
IV.CROCE.HHE. 2019-04-27T00:45:16.51 0.6 undecidable manual P 207 1.0882 50 -0.45 39
IV.GIB.HHE. 2019-04-27T00:45:15.54 0.6 undecidable manual P 282 0.9164 50 1.53 25
IV.JOPP.HHN. 2019-04-27T00:45:14.86 0.3 undecidable manual P 35 0.9857 50 -0.35 62
IV.IACL.HHE. 2019-04-27T00:45:14.84 0.3 undecidable manual P 319 0.9686 50 -0.08 65
IV.IFIL.HHN. 2019-04-27T00:45:13.57 0.6 undecidable manual P 329 0.8921 50 -0.03 45
IV.PLLN.EHN. 2019-04-27T00:45:13.49 0.3 undecidable manual P 284 0.8265 50 1.01 50
IV.CSLB.HHZ. 2019-04-27T00:45:13.78 0.3 undecidable manual P 279 0.8822 50 0.35 63
MN.VAE.HHZ. 2019-04-27T00:45:12.21 0.3 undecidable manual P 243 0.7213 50 1.53 38
IV.RAFF.HHZ. 2019-04-27T00:45:12.96 0.1 undecidable manual P 228 0.858 50 -0.06 90
IV.SOI.EHN. 2019-04-27T00:45:11.23 0.3 undecidable manual P 69 0.7536 50 -0.01 70
IV.MPNC.HHZ. 2019-04-27T00:45:11.05 0.6 undecidable manual S 23 0.3768 92 0.81 40
IV.MNO.SHZ. 2019-04-27T00:45:11.53 0.6 undecidable manual S 290 0.3912 92 0.74 41
MN.CEL.HHZ. 2019-04-27T00:45:10.81 0.3 undecidable manual P 51 0.7365 50 -0.14 68
IV.ILLI.HHZ. 2019-04-27T00:45:09.85 0.3 undecidable manual P 345 0.6664 50 0.1 70
IV.SSY.HHE. 2019-04-27T00:45:09.85 0.3 undecidable manual P 186 0.6457 50 0.45 65
IV.SICLA.EHN. 2019-04-27T00:45:09.10 0.6 undecidable manual P 43 0.6295 50 -0.02 48
IV.IVPL.HHZ. 2019-04-27T00:45:08.17 0.1 undecidable manual P 346 0.5936 50 -0.32 90
IV.GMB.BHE. 2019-04-27T00:45:08.55 0.6 undecidable manual P 55 0.6412 50 -0.76 39
IV.IVGP.HHN. 2019-04-27T00:45:08.47 0.3 undecidable manual P 345 0.6169 50 -0.43 66
IV.AGST.EHE. 2019-04-27T00:45:07.29 0.3 undecidable manual P 175 0.5459 50 -0.39 67
IV.ESML.HHZ. 2019-04-27T00:45:06.87 0.6 undecidable manual S 231 0.2887 93 0.03 51
IV.GALF.HHZ. 2019-04-27T00:45:06.38 0.3 undecidable manual P 259 0.4793 92 0.01 74
IV.HAGA.HHZ. 2019-04-27T00:45:06.60 0.3 undecidable manual P 181 0.5153 50 -0.56 65
IV.MSRU.HHZ. 2019-04-27T00:45:06.91 0.1 undecidable manual P 30 0.5378 50 -0.63 83
IV.MTTG.HHZ. 2019-04-27T00:45:06.60 0.3 undecidable manual P 64 0.4694 92 0.44 68
IV.MSFR.HHZ. 2019-04-27T00:45:06.36 0.1 undecidable manual P 298 0.5072 92 -0.63 84
IV.HLNI.HHE. 2019-04-27T00:45:05.97 0.3 undecidable manual P 207 0.5072 92 -1.01 53
IV.MILZ.HHN. 2019-04-27T00:45:05.80 0.3 undecidable manual P 7 0.4739 92 -0.45 67
IV.MNO.SHZ. 2019-04-27T00:45:04.37 0.3 undecidable manual P 290 0.3912 92 -0.04 75
IV.EMSG.HHZ. 2019-04-27T00:45:03.36 0.3 undecidable manual S 277 0.1691 95 1.12 54
IV.MPNC.HHZ. 2019-04-27T00:45:03.79 0.3 undecidable manual P 23 0.3768 92 -0.31 71
IV.ESML.HHZ. 2019-04-27T00:45:02.49 0.3 undecidable manual P 231 0.2887 93 0.36 71
IV.ESLN.HHZ. 2019-04-27T00:45:02.66 0.6 undecidable manual S 234 0.1826 94 -0.12 51
IV.MUCR.HHZ. 2019-04-27T00:45:02.91 0.3 undecidable manual P 317 0.3327 92 -0.2 73
IV.NOV.HHZ. 2019-04-27T00:45:01.03 0.1 undecidable manual P 355 0.2284 94 0.24 99
IV.AIO.HHZ. 2019-04-27T00:45:00.11 0.1 negative manual P 18 0.1799 95 0.39 96
IV.EPZF.HHZ. 2019-04-27T00:45:00.75 0.1 negative manual P 276 0.2419 93 -0.36 96
IV.EPOZ.HHZ. 2019-04-27T00:45:00.34 0.3 undecidable manual P 171 0.1304 96 1.72 38
IV.ESLN.HHZ. 2019-04-27T00:44:59.24 0.3 undecidable manual P 234 0.1826 94 -0.55 69
IV.ECTS.EHZ. 2019-04-27T00:44:59.48 0.3 undecidable manual S 338 0.0881 99 0.34 74
IV.EMSG.HHZ. 2019-04-27T00:44:59.26 0.1 undecidable manual P 277 0.1691 95 -0.22 100
IV.EMCN.HNZ. 2019-04-27T00:44:57.07 0.1 undecidable manual P 265 0.1025 98 -0.93 80
IV.ECTS.EHZ. 2019-04-27T00:44:57.01 0.1 negative manual P 338 0.0881 99 -0.68 89
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMSG.HHN. ML:0 0.049986025 0.48 AML other m 2019-04-27T00:45:09.34
IV.EMSG.HHE. ML:0 0.077676175 0.82 AML other m 2019-04-27T00:45:11.58
IV.EPOZ.HHE. ML:0 0.077249685 1 AML other m 2019-04-27T00:45:09.78
IV.EPOZ.HHN. ML:0 0.08088718 0.6 AML other m 2019-04-27T00:45:10.53
IV.MPNC.HHN. ML:0 0.007351515 0.6 AML other m 2019-04-27T00:45:14.84
IV.MNO.SHN. ML:0 0.0083190625 0.84 AML other m 2019-04-27T00:45:18.83
IV.MPNC.HHE. ML:0 0.006059884 1.42 AML other m 2019-04-27T00:45:22.28
IV.MNO.SHE. ML:0 0.0073186975 0.76 AML other m 2019-04-27T00:45:25.31
IV.ECTS.EHN. ML:0 0.05406813 1.32 AML other m 2019-04-27T00:45:02.53
IV.ECTS.EHE. ML:0 0.079217635 0.98 AML other m 2019-04-27T00:45:03.38
IV.EMCN.HNN. ML:2.9 0.0140785515 0.31 AML other m 2019-04-27T00:44:59.39
IV.EMCN.HNE. ML:2.9 0.01439695 0.47 AML other m 2019-04-27T00:44:59.53
IV.ESLN.HHN. ML:3.1 0.0104050465 0.52 AML other m 2019-04-27T00:45:09.08
IV.ESLN.HHE. ML:3.4 0.01900437 0.74 AML other m 2019-04-27T00:45:09.83
IV.AIO.HHN. ML:3 0.007845167 1.18 AML other m 2019-04-27T00:45:09.35
IV.AIO.HHE. ML:3 0.009160824 1.14 AML other m 2019-04-27T00:45:08.02
IV.EPZF.HHN. ML:3.6 0.025224785 0.56 AML other m 2019-04-27T00:45:12.78
IV.EPZF.HHE. ML:3.7 0.02865433 1.04 AML other m 2019-04-27T00:45:13.15
IV.NOV.HHN. ML:3.6 0.02358159 0.8 AML other m 2019-04-27T00:45:11.80
IV.NOV.HHE. ML:3.6 0.02877188 0.84 AML other m 2019-04-27T00:45:10.78
IV.ESML.HHE. ML:2.9 0.003793011 0.5 AML other m 2019-04-27T00:45:16.06
IV.ESML.HHN. ML:3 0.004235223 0.66 AML other m 2019-04-27T00:45:17.28
IV.MUCR.HHN. ML:3.1 0.0045900165 0.7 AML other m 2019-04-27T00:45:12.17
IV.MUCR.HHE. ML:3.1 0.0051162495 0.6 AML other m 2019-04-27T00:45:12.34
IV.GALF.HHE. ML:3.5 0.008098782 0.64 AML other m 2019-04-27T00:45:22.16
IV.GALF.HHN. ML:3.5 0.008831557 0.74 AML other m 2019-04-27T00:45:24.81
IV.GALF.HNE. ML:2.6 0.0010940467 0.7 AML other m 2019-04-27T00:45:22.13
IV.GALF.HNN. ML:2.6 0.001129608 0.72 AML other m 2019-04-27T00:45:24.80
IV.MTTG.HHE. ML:2.8 0.001572567 1.24 AML other m 2019-04-27T00:45:22.08
IV.MTTG.HHN. ML:2.6 0.0010164553 0.88 AML other m 2019-04-27T00:45:28.25
IV.MSRU.HHE. ML:2.8 0.001497944 0.92 AML other m 2019-04-27T00:45:26.51
IV.MSRU.HHN. ML:2.9 0.0016222175 0.58 AML other m 2019-04-27T00:45:21.81
IV.IVPL.HHE. ML:3.3 0.0036677115 0.68 AML other m 2019-04-27T00:45:24.35
IV.IVPL.HHN. ML:3.2 0.003140319 1.14 AML other m 2019-04-27T00:45:21.64
IV.ILLI.HHN. ML:3.9 0.01333964 0.88 AML other m 2019-04-27T00:45:37.03
IV.ILLI.HHE. ML:3.9 0.011681315 0.78 AML other m 2019-04-27T00:45:34.41
IV.PLAC.HNE. ML:2.9 0.00052542405 0.8 AML other m 2019-04-27T00:45:52.42
IV.PLAC.HHN. ML:2.9 0.00056017285 0.78 AML other m 2019-04-27T00:45:52.41
IV.PLAC.HNN. ML:2.9 0.0004909479 0.7 AML other m 2019-04-27T00:45:50.30
IV.PLAC.HHE. ML:2.9 0.0005144364 0.7 AML other m 2019-04-27T00:45:50.30
TDMT - Time Domain Moment Tensor

TDMT details

Field Value
Magnitude3.3
Scalar Moment1.19285E+21 dyne-cm
Computed depth3 km
QualityBa
Variance Reduction49.97%
Double Couple78%
CLVD22%
ISO0%
Model usedCIA
Modemanual
Statusreviewed

Moment Tensor Components

Component Value
Mrr-1.716E+20
Mtt2.66E+20
Mpp-9.45E+19
Mrt9.17E+19
Mrp5.886E+20
Mtp1.014E+21

Nodal Planes

Name Strike Dip Rake
PN118786-149
PN29559-5

Focal Mechanism

Focal Mechanism

psmeca (GMT documentation)

15.111 37.81 3 187 86 -149 95 59 -5 1.19285 21 15.611 38.31

TDMT references

More info and references

Station Distribution

Station Distribution

TDMT station details

Sta Dist Azi V R zcor
JOPP 111.5 37.3 23.52% 105
MPNC 43 29.6 38.29% 97
MSRU 61.3 34.6 56% 100
NOV 24.4 5.1 55.27% 96
CEL 85 53.7 -7.98% 103
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