Earthquake with magnitude of Mw 3.3 on date 27-04-2019 and time 00:44:55 (UTC) 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, 15.162 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
Malvagna ME 16 733 140909
Gallodoro ME 16 367 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 seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is 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 updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent 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
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 3.2 2019-04-27
00:44:55
37.8003 15.1623 2 2019-08-22
08:25:12
Bollettino Sismico Italiano INGV 71112361
Reviewed Evaluation Mw
Rev501
Mw 3.3 2019-04-27
00:44:54
37.81 15.111 3 2019-08-02
13:45:01
TDMT-INGV Revised 69204581
Reviewed
Rev200
ML 3.3 2019-04-27
00:44:54
37.81 15.111 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 37.8003 ± 0.0063
Longitude 15.1623 ± 0.0091
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:3.2

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

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
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.IACL.HHE. 2019-04-27T00:45:14.84 0.3 undecidable manual P 319 0.9686 50 -0.08 65
IV.JOPP.HHN. 2019-04-27T00:45:14.86 0.3 undecidable manual P 35 0.9857 50 -0.35 62
IV.CSLB.HHZ. 2019-04-27T00:45:13.78 0.3 undecidable manual P 279 0.8822 50 0.35 63
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
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.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
IV.SOI.EHN. 2019-04-27T00:45:11.23 0.3 undecidable manual P 69 0.7536 50 -0.01 70
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.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.IVPL.HHZ. 2019-04-27T00:45:08.17 0.1 undecidable manual P 346 0.5936 50 -0.32 90
IV.AGST.EHE. 2019-04-27T00:45:07.29 0.3 undecidable manual P 175 0.5459 50 -0.39 67
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.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.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.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.ESLN.HHZ. 2019-04-27T00:44:59.24 0.3 undecidable manual P 234 0.1826 94 -0.55 69
IV.ECTS.EHZ. 2019-04-27T00:44:57.01 0.1 negative manual P 338 0.0881 99 -0.68 89
IV.EMCN.HNZ. 2019-04-27T00:44:57.07 0.1 undecidable manual P 265 0.1025 98 -0.93 80
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

Fault Plane solution

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
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols 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 miniseed + resp format Download