Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 04-07-2020 and time 01:47:23 (UTC) in region 8 km NE Regalbuto (EN)

A magnitude ML 1.5 earthquake occured in region: 8 km NE Regalbuto (EN), on

  • 04-07-2020 01:47:23 (UTC)
  • 04-07-2020 03:47:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7150, 14.6870 at 32 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
Regalbuto EN 8 7277 7277
Troina EN 11 9373 16650
Centuripe EN 12 5470 22120
Gagliano Castelferrato EN 13 3593 25713
Adrano CT 14 36122 61835
Cesarò ME 15 2439 64274
San Teodoro ME 15 1403 65677
Bronte CT 15 19172 84849
Agira EN 16 8345 93194
Catenanuova EN 16 4866 98060
Biancavilla CT 18 24007 122067
Cerami EN 19 2006 124073
Maniace CT 20 3765 127838

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km NW of Catania (314555 inhabitants)
44 Km W of Acireale (52622 inhabitants)
60 Km E of Caltanissetta (63360 inhabitants)
82 Km NE of Gela (75827 inhabitants)
86 Km N of Vittoria (63339 inhabitants)
88 Km N of Ragusa (73313 inhabitants)
90 Km NW of Siracusa (122291 inhabitants)
93 Km SW of Messina (238439 inhabitants)
95 Km W of Reggio di Calabria (183035 inhabitants)
95 Km N of Modica (54633 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 2020-07-04
01:47:23		 37.715 14.6872 32 2020-11-19
12:37:03		 Bollettino Sismico Italiano INGV 83556891
Reviewed
Rev200 		ML 1.7 2020-07-04
01:47:23		 37.712 14.704 14 2020-07-04
05:25:24		 Sala Operativa INGV-OE (Catania) 80760971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-04 01:47:23 ± 0.3
Latitude 37.7150 ± 0.0081
Longitude 14.6872 ± 0.0193
Depth (km) 32 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83556891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1247
Semi-minor axis of confidence ellipse (meter) 1107
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 274
Circular confidence region, given by single value of horizontal uncertainty (meter) 1250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 15
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.63582
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 83556891
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-06 14:35:38

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 80760971
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-07-04 05:25:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ROSPO.HHZ. 2020-07-04T01:49:11.65 3.0 undecidable manual Sn -0.62 0
IV.CMPR.HHZ. 2020-07-04T01:48:28.01 3.0 undecidable manual Sn -0.92 0
IV.HLNI.HHZ. 2020-07-04T01:47:39.30 0.6 undecidable manual S 158 43.8228 121 0.28 45
IV.MUCR.HHZ. 2020-07-04T01:47:38.54 0.6 undecidable manual S 24 39.9267 124 0.4 43
IV.MSFR.HHE. 2020-07-04T01:47:37.47 0.6 undecidable manual S 347 36.3414 127 0.09 47
IV.SSY.HHZ. 2020-07-04T01:47:36.32 0.3 undecidable manual P 151 70.5738 109 0.21 66
IV.ESML.HHE. 2020-07-04T01:47:35.30 0.6 undecidable manual S 122 19.9689 145 0.99 36
IV.EPZF.HHZ. 2020-07-04T01:47:33.70 0.6 undecidable manual S 51 19.1697 146 -0.48 45
IV.GALF.HHZ. 2020-07-04T01:47:33.20 0.3 undecidable manual S 267 10.5783 160 0.07 75
IV.HLNI.HHZ. 2020-07-04T01:47:32.27 0.1 undecidable manual P 158 43.8228 121 -0.09 92
IV.MUCR.HHZ. 2020-07-04T01:47:32.12 0.3 undecidable manual P 24 39.9267 124 0.26 68
IV.MSFR.HHE. 2020-07-04T01:47:31.58 0.3 undecidable manual P 347 36.3414 127 0.17 70
IV.EMSG.HHN. 2020-07-04T01:47:29.90 0.3 undecidable manual P 63 25.8519 137 -0.31 69
IV.ESML.HHE. 2020-07-04T01:47:29.33 0.6 undecidable manual P 122 19.9689 145 -0.31 46
IV.EPZF.HHZ. 2020-07-04T01:47:29.10 0.1 undecidable manual P 51 19.1697 146 -0.47 90
IV.SOLUN.HHZ. 2020-07-04T01:47:29.30 3.0 undecidable manual P -0.02 0
IV.ECHR.HHE. 2020-07-04T01:47:29.49 0.3 undecidable manual P 99 20.0688 145 -0.16 72
IV.GALF.HHZ. 2020-07-04T01:47:28.97 0.1 positive manual P 267 10.5783 160 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPZF.HHE. ML:1.8 0.00024873955 1.16 AML other m 2020-07-04T01:47:28.20
IV.EPZF.HHN. ML:2.2 0.0006388863000000001 0.54 AML other m 2020-07-04T01:47:34.06
IV.GALF.HHE. ML:2.2 0.00078562705 0.36 AML other m 2020-07-04T01:47:34.75
IV.GALF.HHN. ML:2.1 0.00056899335 0.22 AML other m 2020-07-04T01:47:34.74
IV.GALF.HNE. ML:1.4 0.00011726671499999999 0.48 AML other m 2020-07-04T01:47:35.12
IV.SSY.HHE. ML:1.8 0.00009008544895 1.86 AML other m 2020-07-04T01:47:35.96
IV.MUCR.HHE. ML:1.3 0.00005258359 0.32 AML other m 2020-07-04T01:47:39.39
IV.HLNI.HHE. ML:1.2 0.00003533455 0.1 AML other m 2020-07-04T01:47:39.76
IV.MUCR.HHN. ML:1.2 0.000043054055 0.36 AML other m 2020-07-04T01:47:41.23
IV.HLNI.HHN. ML:1.1 0.000032169564999999995 0.34 AML other m 2020-07-04T01:47:41.33
IV.GALF.HNN. ML:1.5 0.00014031765000000002 0.58 AML other m 2020-07-04T01:47:44.41
IV.SOLUN.HHN. ML:1.3 0.000015136565000000001 0.46 AML other m 2020-07-04T01:47:44.68
IV.SOLUN.HHE. ML:1.6 0.000032732825 0.92 AML other m 2020-07-04T01:47:57.15
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