Earthquake with magnitude of ML 2.1 on date 06-04-2021 and time 16:34:10 (Italy) in region 1 km SW Alcara li Fusi (ME)

A magnitude ML 2.1 earthquake occured in region: 1 km SW Alcara li Fusi (ME), on

  • 06-04-2021 14:34:10 (UTC)
  • 06-04-2021 16:34:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.014, 14.69 at 7 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
Alcara li Fusi ME 1 1980 1980
Militello Rosmarino ME 4 1324 3304
Longi ME 6 1473 4777
San Marco d'Alunzio ME 7 1996 6773
Galati Mamertino ME 8 2627 9400
Sant'Agata di Militello ME 8 12624 22024
Frazzanò ME 8 711 22735
San Fratello ME 8 3707 26442
Torrenova ME 9 4386 30828
Mirto ME 10 974 31802
San Salvatore di Fitalia ME 10 1319 33121
Acquedolci ME 10 5744 38865
Capri Leone ME 11 4515 43380
Tortorici ME 12 6435 49815
Castell'Umberto ME 13 3128 52943
Naso ME 15 3813 56756
Sinagra ME 16 2705 59461
Ficarra ME 16 1469 60930
Capo d'Orlando ME 17 13254 74184
Ucria ME 17 1058 75242
San Teodoro ME 18 1403 76645
Cesarò ME 19 2439 79084
Floresta ME 20 485 79569
Maniace CT 20 3765 83334

Municipalities with at least 50000 inhabitants

An earthquake occurred to
61 Km NW of Acireale (52622 inhabitants)
67 Km NW of Catania (314555 inhabitants)
78 Km W of Messina (238439 inhabitants)
80 Km NE of Caltanissetta (63360 inhabitants)
84 Km W of Reggio di Calabria (183035 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
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 2.1 2021-04-06
14:34:10
38.0137 14.6902 7 2021-07-12
16:55:07
Bollettino Sismico Italiano INGV 89358671
Reviewed
Rev100
ML 2.0 2021-04-06
14:34:10
38.0007 14.6987 8 2021-04-06
14:48:18
Sala Sismica INGV-Roma 88837801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-06 14:34:10 ± 0.1
Latitude 38.0137 ± 0.0072
Longitude 14.6902 ± 0.0068
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89358671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 544
Semi-minor axis of confidence ellipse (meter) 540
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 182
Circular confidence region, given by single value of horizontal uncertainty (meter) 620
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.08004
Epicentral distance of station farthest from the epicenter (degree) 0.67989
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 89358671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-29 16:04:55

ML:2

Field Value
Value 2
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 88837801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-06 14:48:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.IVUG.HHZ. 2021-04-06T14:34:27.89 0.6 undecidable manual S 31 0.447 50 0.75 39
IV.PLLN.EHZ. 2021-04-06T14:34:27.33 0.3 undecidable manual S 267 0.4317 50 0.66 62
IV.AIO.HHZ. 2021-04-06T14:34:25.38 0.6 undecidable manual S 96 0.4299 50 -1.24 31
IV.HLNI.HHZ. 2021-04-06T14:34:24.41 0.3 undecidable manual P 168 0.6799 50 0.32 65
IV.IVUG.HHZ. 2021-04-06T14:34:20.35 0.3 undecidable manual P 31 0.447 50 0.25 69
IV.ESAL.HHZ. 2021-04-06T14:34:20.40 0.3 undecidable manual P 126 0.4353 50 0.49 66
IV.PETRA.HHZ. 2021-04-06T14:34:20.46 0.3 undecidable manual P 249 0.4883 50 -0.34 67
IV.CSLB.HHZ. 2021-04-06T14:34:20.40 0.3 undecidable manual P 261 0.5036 50 -0.68 60
IV.IVGP.HHZ. 2021-04-06T14:34:20.06 0.3 undecidable manual P 29 0.438 50 0.11 71
IV.EMPL.HHZ. 2021-04-06T14:34:19.66 0.3 undecidable manual P 146 0.4011 50 0.35 68
IV.PLLN.EHZ. 2021-04-06T14:34:19.20 0.3 undecidable manual P 267 0.4317 50 -0.63 62
IV.AIO.HHZ. 2021-04-06T14:34:19.23 0.3 undecidable manual P 96 0.4299 50 -0.57 64
IV.ESPC.HHZ. 2021-04-06T14:34:19.52 0.3 undecidable manual P 140 0.4173 50 -0.07 72
IV.ESVO.HHZ. 2021-04-06T14:34:18.27 0.3 undecidable manual P 140 0.3148 101 0.65 63
IV.EMCN.HHZ. 2021-04-06T14:34:18.87 0.3 undecidable manual P 129 0.3507 100 0.47 67
IV.EMNR.HHZ. 2021-04-06T14:34:18.70 0.3 undecidable manual P 127 0.3301 101 0.74 61
IV.EPIT.HHZ. 2021-04-06T14:34:18.65 0.3 undecidable manual P 125 0.3525 100 0.19 71
IV.GALF.HHZ. 2021-04-06T14:34:17.39 0.3 undecidable manual P 198 0.3184 101 -0.31 70
IV.NOV.HNZ. 2021-04-06T14:34:17.51 0.3 undecidable manual P 88 0.3516 100 -0.92 56
IV.EMSG.HHZ. 2021-04-06T14:34:16.59 0.3 undecidable manual P 133 0.2815 102 -0.3 70
IV.ESCV.HHE. 2021-04-06T14:34:16.99 0.3 undecidable manual P 160 0.2842 102 0.03 75
IV.MUCR.HHZ. 2021-04-06T14:34:16.42 0.3 undecidable manual S 79 0.1475 113 -0.23 73
IV.EPZF.HHZ. 2021-04-06T14:34:15.85 0.3 undecidable manual P 145 0.2311 105 0.05 75
IV.MCPD.HHZ. 2021-04-06T14:34:15.80 0.3 undecidable manual S 17 0.1106 119 0.43 71
IV.MSFR.HHZ. 2021-04-06T14:34:14.52 0.3 undecidable manual S 285 0.08 127 0.13 76
IV.MCPD.HHZ. 2021-04-06T14:34:13.32 0.3 undecidable manual P 17 0.1106 119 0.01 77
IV.MUCR.HHZ. 2021-04-06T14:34:13.65 0.1 undecidable manual P 79 0.1475 113 -0.4 94
IV.MSFR.HHZ. 2021-04-06T14:34:12.55 0.1 undecidable manual P 285 0.08 127 -0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MSFR.HHE. ML:1.8 0.00114610145 0.224 AML other m 2021-04-06T14:34:14.61
IV.MSFR.HHN. ML:1.8 0.0009812851 0.1984 AML other m 2021-04-06T14:34:14.76
IV.MCPD.HHN. ML:2.3 0.0025858445 0.2432 AML other m 2021-04-06T14:34:16.44
IV.MUCR.HHE. ML:2.4 0.00247368945 0.16 AML other m 2021-04-06T14:34:16.79
IV.MUCR.HHN. ML:2.5 0.0034179005 0.2816 AML other m 2021-04-06T14:34:16.77
IV.AIO.HHN. ML:2 0.000275 1.5 AML other m 2021-04-06T14:34:27.03
IV.AIO.HHE. ML:2 0.00029542705 0.3648 AML other m 2021-04-06T14:34:27.46
IV.GALF.HHN. ML:2.6 0.001663971 0.3584 AML other m 2021-04-06T14:34:28.90
IV.GALF.HNE. ML:1.8 0.00023419895 0.512 AML other m 2021-04-06T14:34:28.91
IV.GALF.HHE. ML:2.6 0.0015195965 0.6208 AML other m 2021-04-06T14:34:30.37
IV.PLLN.EHN. ML:2.4 0.0007184991 0.4032 AML other m 2021-04-06T14:34:30.91
IV.GALF.HNN. ML:1.8 0.00024003195 0.576 AML other m 2021-04-06T14:34:31.23
IV.CSLB.HHE. ML:1.6 0.000102211765 0.416 AML other m 2021-04-06T14:34:31.53
IV.PLLN.EHE. ML:2.4 0.0006925565 0.48 AML other m 2021-04-06T14:34:32.50
IV.CSLB.HHN. ML:1.7 0.000115049495 0.3648 AML other m 2021-04-06T14:34:33.68
TDMT - Time Domain Moment Tensor
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