Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 18-02-2020 and time 19:50:32 (Italy) in region 11 km NE Caltagirone (CT)

A magnitude ML 1.6 earthquake occured in region: 11 km NE Caltagirone (CT), on

  • 18-02-2020 18:50:32 (UTC)
  • 18-02-2020 19:50:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.3260, 14.5770 at 23 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
Caltagirone CT 11 38686 38686
Mirabella Imbaccari CT 12 4912 43598
Mineo CT 12 5159 48757
Ramacca CT 12 10894 59651
Grammichele CT 13 13418 73069
San Michele di Ganzaria CT 14 3245 76314
Palagonia CT 15 16608 92922
Aidone EN 15 4889 97811
Raddusa CT 17 3178 100989
San Cono CT 19 2697 103686
Piazza Armerina EN 20 21886 125572
Castel di Iudica CT 20 4625 130197

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NE of Gela (75827 inhabitants)
42 Km N of Vittoria (63339 inhabitants)
47 Km N of Ragusa (73313 inhabitants)
49 Km E of Caltanissetta (63360 inhabitants)
49 Km W of Catania (314555 inhabitants)
54 Km N of Modica (54633 inhabitants)
61 Km SW of Acireale (52622 inhabitants)
70 Km W of Siracusa (122291 inhabitants)
88 Km E of Agrigento (59770 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 1.6 2020-02-18
18:50:32		 37.3263 14.5772 23 2020-07-18
21:08:41		 Bollettino Sismico Italiano INGV 80296621
Reviewed
Rev100 		ML 1.5 2020-02-18
18:50:32		 37.366 14.5507 11 2020-02-18
19:00:42		 Sala Sismica INGV-Roma 76633821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-18 18:50:32 ± 0.27
Latitude 37.3263 ± 0.0144
Longitude 14.5772 ± 0.0124
Depth (km) 23 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80296621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1360
Semi-minor axis of confidence ellipse (meter) 964
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 2
Circular confidence region, given by single value of horizontal uncertainty (meter) 1360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.18436
Epicentral distance of station farthest from the epicenter (degree) 0.71856
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 76633821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-18 19:00:42

ML:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 80296621
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-18 20:16:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2020-02-18T18:50:57.58 0.6 undecidable manual S 149 79.7646 100 0.77 39
IV.SSY.HHZ. 2020-02-18T18:50:49.12 0.6 undecidable manual S 113 47.7189 108 0.62 44
IV.HAGA.HHZ. 2020-02-18T18:50:49.68 0.6 undecidable manual S 95 51.2154 107 0.29 47
IV.HPAC.HHZ. 2020-02-18T18:50:46.68 0.3 undecidable manual P 149 79.7646 100 0.02 71
IV.HLNI.HHZ. 2020-02-18T18:50:43.18 0.6 undecidable manual S 85 26.1516 125 -0.12 51
IV.HVZN.HHE. 2020-02-18T18:50:42.25 0.6 undecidable manual S 143 20.4684 133 0.12 52
IV.RAFF.HHZ. 2020-02-18T18:50:42.97 0.6 undecidable manual S 239 22.1556 130 0.5 48
IV.HAGA.HHZ. 2020-02-18T18:50:42.00 0.3 undecidable manual P 95 51.2154 107 -0.37 70
IV.GALF.HHZ. 2020-02-18T18:50:41.76 0.3 undecidable manual P 359 42.624 111 0.63 65
IV.SSY.HHZ. 2020-02-18T18:50:41.72 0.1 positive manual P 113 47.7189 108 -0.14 99
IV.HLNI.HHZ. 2020-02-18T18:50:38.49 0.1 positive manual P 85 26.1516 125 -0.37 98
IV.RAFF.HHZ. 2020-02-18T18:50:38.04 0.1 undecidable manual P 239 22.1556 130 -0.34 99
IV.HVZN.HHE. 2020-02-18T18:50:37.89 0.1 undecidable manual P 143 20.4684 133 -0.29 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RAFF.HHE. ML:1.7 0.000226 0.58 AML other m 2020-02-18T18:50:43.42
IV.HLNI.HHE. ML:1.7 0.00023199999999999997 0.1 AML other m 2020-02-18T18:50:43.37
IV.HLNI.HHN. ML:1.6 0.000186 0.24 AML other m 2020-02-18T18:50:43.40
IV.RAFF.HHN. ML:1.4 0.000135 0.16 AML other m 2020-02-18T18:50:43.61
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