Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 28-02-2020 and time 04:18:31 (Italy) in region 10 km E Ramacca (CT)

A magnitude ML 1.5 earthquake occured in region: 10 km E Ramacca (CT), on

  • 28-02-2020 03:18:31 (UTC)
  • 28-02-2020 04:18:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.4150, 14.8030 at 8 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ramacca CT 10 10894 10894
Palagonia CT 11 16608 27502
Scordia CT 14 17095 44597
Militello in Val di Catania CT 16 7443 52040
Castel di Iudica CT 16 4625 56665
Motta Sant'Anastasia CT 18 12116 68781
Mineo CT 19 5159 73940
Catenanuova EN 20 4866 78806

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km W of Catania (314555 inhabitants)
39 Km SW of Acireale (52622 inhabitants)
55 Km N of Ragusa (73313 inhabitants)
57 Km NE of Vittoria (63339 inhabitants)
59 Km NW of Siracusa (122291 inhabitants)
62 Km N of Modica (54633 inhabitants)
62 Km NE of Gela (75827 inhabitants)
66 Km E of Caltanissetta (63360 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.5 2020-02-28
03:18:31		 37.4152 14.8027 9 2020-07-18
21:08:25		 Bollettino Sismico Italiano INGV 77189961
Reviewed
Rev100 		ML 1.6 2020-02-28
03:18:31		 37.4103 14.7882 9 2020-02-28
03:28:26		 Sala Sismica INGV-Roma 76881661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-28 03:18:31 ± 0.08
Latitude 37.4152 ± 0.0027
Longitude 14.8027 ± 0.0068
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77189961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 530
Semi-minor axis of confidence ellipse (meter) 204
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 86
Circular confidence region, given by single value of horizontal uncertainty (meter) 530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.08633
Epicentral distance of station farthest from the epicenter (degree) 0.73025
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 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 76881661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-28 03:28:26

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 77189961
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-11 11:38:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2020-02-28T03:18:56.52 0.3 undecidable manual S 165 81.0522 50 0.62 58
IV.EPZF.HHE. 2020-02-28T03:18:46.41 0.3 undecidable manual S 6 45.621 50 -0.02 71
IV.RAFF.HHZ. 2020-02-28T03:18:46.33 0.3 undecidable manual S 241 44.3223 50 0.24 68
IV.HPAC.HHZ. 2020-02-28T03:18:45.37 0.3 undecidable manual P 165 81.0522 50 -0.1 66
IV.SSY.HHZ. 2020-02-28T03:18:44.59 0.1 undecidable manual S 140 37.2294 50 0.39 90
IV.AIO.HHZ. 2020-02-28T03:18:44.09 0.3 undecidable manual P 31 72.372 50 -0.03 68
IV.MSFR.HHZ. 2020-02-28T03:18:43.94 0.3 undecidable manual P 345 71.0733 50 0.01 68
IV.MEU.EHN. 2020-02-28T03:18:43.26 0.3 undecidable manual S 176 33.8439 50 -0.02 73
IV.HAGA.HHZ. 2020-02-28T03:18:42.90 0.1 undecidable manual S 115 34.2435 50 -0.5 88
IV.ENIC.HHE. 2020-02-28T03:18:42.42 0.3 undecidable manual S 39 30.747 105 0.13 72
IV.HVZN.HNZ. 2020-02-28T03:18:41.17 0.3 undecidable manual S 196 27.3504 107 0.01 74
IV.EPZF.HHE. 2020-02-28T03:18:40.59 0.1 undecidable manual P 6 45.621 50 0.59 83
IV.ESML.HHZ. 2020-02-28T03:18:40.09 0.1 undecidable manual S 17 23.4543 110 0.2 96
IV.RAFF.HHZ. 2020-02-28T03:18:39.59 0.3 undecidable manual P 241 44.3223 50 -0.22 69
IT.LNT.HGZ. 2020-02-28T03:18:39.86 0.3 undecidable manual S 129 22.5552 111 0.29 70
IV.GALF.HHZ. 2020-02-28T03:18:38.71 0.1 undecidable manual P 328 38.8278 50 -0.25 92
IV.CAGR.HHE. 2020-02-28T03:18:38.52 0.3 undecidable manual P 311 35.1426 50 0.13 71
IV.SSY.HHZ. 2020-02-28T03:18:38.34 0.1 undecidable manual P 140 37.2294 50 -0.37 90
IV.MEU.EHN. 2020-02-28T03:18:38.42 0.3 undecidable manual P 176 33.8439 50 0.24 70
IV.HAGA.HHZ. 2020-02-28T03:18:37.95 0.1 undecidable manual P 115 34.2435 50 -0.3 92
IV.ENIC.HHE. 2020-02-28T03:18:37.61 0.3 undecidable manual P 39 30.747 105 0 74
IV.HVZN.HNZ. 2020-02-28T03:18:36.40 0.3 undecidable manual P 196 27.3504 107 -0.56 65
IV.ESML.HHZ. 2020-02-28T03:18:35.89 0.1 undecidable manual P 17 23.4543 110 -0.34 93
IV.HLNI.HHZ. 2020-02-28T03:18:35.75 0.1 undecidable manual S 140 9.5793 131 0.09 100
IT.LNT.HGZ. 2020-02-28T03:18:35.81 0.3 undecidable manual P 129 22.5552 111 -0.23 71
IV.HLNI.HHZ. 2020-02-28T03:18:33.97 0.1 negative manual P 140 9.5793 131 0.19 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HLNI.HHE. ML:1.1 0.0001813495 0.12 AML other m 2020-02-28T03:18:37.27
IV.HLNI.HHN. ML:1.2 0.00023854064999999998 0.2208 AML other m 2020-02-28T03:18:36.69
IV.ESML.HHN. ML:1.2 0.00009979356 0.1792 AML other m 2020-02-28T03:18:40.62
IV.ESML.HHE. ML:1.1 0.00009097223 0.24 AML other m 2020-02-28T03:18:40.99
IV.HAGA.HHE. ML:1.3 0.00008266898 0.28 AML other m 2020-02-28T03:18:44.23
IV.SSY.HHE. ML:2.0 0.00040535955 0.32 AML other m 2020-02-28T03:18:44.99
IV.SSY.HHN. ML:2.2 0.0006781717499999999 0.88 AML other m 2020-02-28T03:18:45.29
IV.GALF.HHE. ML:1.6 0.0001358897 0.52 AML other m 2020-02-28T03:18:43.72
IV.RAFF.HHE. ML:1.4 0.0000853009 0.2 AML other m 2020-02-28T03:18:48.03
IV.RAFF.HHN. ML:1.5 0.000092493145 1.36 AML other m 2020-02-28T03:18:48.13
IV.HPAC.HHN. ML:2.1 0.00016285687 0.56 AML other m 2020-02-28T03:18:57.25
IV.HPAC.HHE. ML:2.0 0.0001424099 1.2192 AML other m 2020-02-28T03:18:57.81
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download