Earthquake with magnitude of ML 2.0 on date 27-09-2020 and time 08:02:34 (UTC) in region 1 km E Randazzo (CT)

A magnitude ML 2.0 earthquake occured in region: 1 km E Randazzo (CT), on

  • 27-09-2020 08:02:34 (UTC)
  • 27-09-2020 10:02:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.88, 14.96 at 29 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
Randazzo CT 1 10900 10900
Santa Domenica Vittoria ME 5 980 11880
Roccella Valdemone ME 8 666 12546
Moio Alcantara ME 9 717 13263
Maletto CT 9 3920 17183
Malvagna ME 10 733 17916
Maniace CT 13 3765 21681
Floresta ME 13 485 22166
Bronte CT 14 19172 41338
Castiglione di Sicilia CT 15 3215 44553
Francavilla di Sicilia ME 16 3945 48498
Linguaglossa CT 17 5403 53901
Montalbano Elicona ME 17 2287 56188
Motta Camastra ME 19 845 57033
San Piero Patti ME 20 2915 59948

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of Acireale (52622 inhabitants)
43 Km N of Catania (314555 inhabitants)
64 Km SW of Messina (238439 inhabitants)
66 Km W of Reggio di Calabria (183035 inhabitants)
89 Km NE of Caltanissetta (63360 inhabitants)
95 Km NW 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 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. 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 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, 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 from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

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 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 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
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 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
Bulletin
Rev1000
ML 2.0 2020-09-27
08:02:34
37.88 14.95 29 2021-02-26
14:56:01
Bollettino Sismico Italiano INGV 84239751
Reviewed
Rev200
ML 1.6 2020-09-27
08:02:32
37.9 14.91 32 2020-12-28
09:44:35
Sala Operativa INGV_OE (Catania) 83294241
Reviewed
Rev100
ML 2.0 2020-09-27
08:02:33
37.88 14.94 31 2020-09-27
08:23:10
Sala Sismica INGV-Roma 83294011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-27 08:02:34 ± 0.21
Latitude 37.88 ± 0.01
Longitude 14.95 ± 0.01
Depth (km) 29 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84239751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1071
Semi-minor axis of confidence ellipse (meter) 676
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 91
Circular confidence region, given by single value of horizontal uncertainty (meter) 1070
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.72395
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 83294241
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-09-27 08:38:55

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 83294011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-27 08:23:10

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 84239751
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-28 09:44:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SSY.HHZ. 2020-09-27T08:02:58.76 0.3 undecidable manual S 172 0.724 104 0.22 64
IV.HCRL.HHZ. 2020-09-27T08:02:54.51 0.6 undecidable manual S 174 0.5954 108 -0.38 41
IV.HLNI.HHZ. 2020-09-27T08:02:52.56 0.6 undecidable manual S 187 0.5315 110 -0.52 40
IV.SSY.HHZ. 2020-09-27T08:02:47.95 0.3 undecidable manual P 172 0.724 104 -0.23 62
IV.MSFR.HHE. 2020-09-27T08:02:47.28 0.6 undecidable manual S 299 0.3265 123 -0.37 44
IV.HCRL.HHZ. 2020-09-27T08:02:45.85 0.3 undecidable manual P 174 0.5954 108 -0.23 64
IV.NOV.HHE. 2020-09-27T08:02:44.82 0.1 undecidable manual S 43 0.2086 137 -0.13 96
IV.MUCR.HHZ. 2020-09-27T08:02:44.07 0.6 undecidable manual S 339 0.179 142 -0.3 47
IV.HLNI.HHZ. 2020-09-27T08:02:44.59 0.3 undecidable manual P 187 0.5315 110 -0.44 62
IV.EPZF.HHZ. 2020-09-27T08:02:43.55 0.1 undecidable manual S 236 0.0926 158 0.47 90
IV.GALF.HHZ. 2020-09-27T08:02:43.44 0.3 undecidable manual P 242 0.348 121 1.24 47
IV.MPNC.HHN. 2020-09-27T08:02:43.54 0.6 undecidable manual P 49 0.4137 116 0.35 44
IV.ECTS.HHZ. 2020-09-27T08:02:43.57 0.6 undecidable manual S 87 0.1313 150 -0.01 49
IV.EMSG.HHZ. 2020-09-27T08:02:42.62 0.6 undecidable manual S 184 0.0549 167 -0.13 49
IV.MSFR.HHE. 2020-09-27T08:02:41.69 0.6 undecidable manual P 299 0.3265 123 -0.2 46
IV.EPOZ.HHZ. 2020-09-27T08:02:41.33 0.3 undecidable manual P 138 0.2752 128 0.16 70
IV.NOV.HHE. 2020-09-27T08:02:40.35 0.3 undecidable manual P 43 0.2086 137 0.01 73
IV.AIO.HHE. 2020-09-27T08:02:40.85 0.6 undecidable manual P 66 0.2392 133 0.14 47
IV.ECBD.HHE. 2020-09-27T08:02:40.05 0.1 undecidable manual P 133 0.1412 148 0.42 91
IV.ECTS.HHZ. 2020-09-27T08:02:39.51 0.3 undecidable manual P 87 0.1313 150 -0.04 74
IV.EPZF.HHZ. 2020-09-27T08:02:39.20 0.1 negative manual P 236 0.0926 158 -0.06 98
IV.MUCR.HHZ. 2020-09-27T08:02:39.62 0.1 positive manual P 339 0.179 142 -0.38 91
IV.EMSG.HHZ. 2020-09-27T08:02:39.09 0.1 undecidable manual P 184 0.0549 167 0.02 100
IV.EPIT.HHE. 2020-09-27T08:02:39.43 0.6 undecidable manual P 129 0.1034 156 0.1 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMSG.HHE. ML:2.1 0.00072318725 0.5376 AML other m 2020-09-27T08:02:41.01
IV.ECTS.HHE. ML:1.6 0.00018620605 0.3008 AML other m 2020-09-27T08:02:43.77
IV.EPZF.HHE. ML:2.1 0.0006897178 0.32 AML other m 2020-09-27T08:02:43.86
IV.ECTS.HHN. ML:1.8 0.0002801633 0.2816 AML other m 2020-09-27T08:02:43.71
IV.MUCR.HHN. ML:1.7 0.00020227715 0.3008 AML other m 2020-09-27T08:02:44.23
IV.EPZF.HHN. ML:2.2 0.00075938935 0.3584 AML other m 2020-09-27T08:02:44.52
IV.EMSG.HHN. ML:2 0.0005588913 0.4352 AML other m 2020-09-27T08:02:45.31
IV.HCRL.HHE. ML:2 0.0001510707 0.16 AML other m 2020-09-27T08:02:55.05
IV.HCRL.HHN. ML:1.8 9.2781065E-5 0.1152 AML other m 2020-09-27T08:02:55.16
IV.SSY.HHN. ML:2.4 0.0003234345 0.256 AML other m 2020-09-27T08:02:58.94
IV.SSY.HHE. ML:2.3 0.00024007685 0.2176 AML other m 2020-09-27T08:03:01.81
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

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 miniseed + resp format Download