Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 04-07-2020 and time 02:31:18 (Italy) in region 10 km NE Regalbuto (EN)

A magnitude ML 1.9 earthquake occured in region: 10 km NE Regalbuto (EN), on

  • 04-07-2020 00:31:18 (UTC)
  • 04-07-2020 02:31:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7280, 14.7100 at 27 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 10 7277 7277
Troina EN 12 9373 16650
Centuripe EN 12 5470 22120
Bronte CT 13 19172 41292
Cesarò ME 13 2439 43731
Adrano CT 13 36122 79853
San Teodoro ME 13 1403 81256
Gagliano Castelferrato EN 15 3593 84849
Biancavilla CT 17 24007 108856
Maniace CT 17 3765 112621
Catenanuova EN 18 4866 117487
Maletto CT 18 3920 121407
Agira EN 18 8345 129752
Santa Maria di Licodia CT 20 7641 137393

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km NW of Catania (314555 inhabitants)
42 Km W of Acireale (52622 inhabitants)
63 Km E of Caltanissetta (63360 inhabitants)
84 Km NE of Gela (75827 inhabitants)
88 Km N of Vittoria (63339 inhabitants)
89 Km N of Ragusa (73313 inhabitants)
90 Km NW of Siracusa (122291 inhabitants)
91 Km SW of Messina (238439 inhabitants)
92 Km W of Reggio di Calabria (183035 inhabitants)
97 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 1.9 2020-07-04
00:31:18		 37.7285 14.7097 27 2020-11-19
12:37:03		 Bollettino Sismico Italiano INGV 83554591
Reviewed
Rev200 		ML 1.9 2020-07-04
00:31:19		 37.714 14.725 13 2020-07-04
05:23:26		 Sala Operativa INGV-OE (Catania) 80760901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-04 00:31:18 ± 0.3
Latitude 37.7285 ± 0.0108
Longitude 14.7097 ± 0.0216
Depth (km) 27 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83554591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1464
Semi-minor axis of confidence ellipse (meter) 1272
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 261
Circular confidence region, given by single value of horizontal uncertainty (meter) 1460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.05221
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations 15
Type of magnitude ML
Reference to an origin 83554591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-06 13:57:27

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 80760901
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-07-04 05:23:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IMI.HHZ. 2020-07-04T00:33:04.55 3.0 undecidable manual Pn -2.64 0
GU.CARD.HHZ. 2020-07-04T00:33:01.07 3.0 undecidable manual Pg 8.21 0
OT.OT11.EHZ. 2020-07-04T00:32:53.43 3.0 undecidable manual Sg 5.47 0
IV.ZCCA.HHZ. 2020-07-04T00:32:52.02 3.0 undecidable manual Pn -2.49 0
IV.PE3.EHZ. 2020-07-04T00:32:52.17 3.0 undecidable manual Pg 11.63 0
IV.LPEL.HHZ. 2020-07-04T00:32:44.75 3.0 undecidable manual Sn -9.99 0
IV.CMPR.HHZ. 2020-07-04T00:32:18.92 3.0 undecidable manual P -0.02 0
IV.CERT.HHZ. 2020-07-04T00:32:07.92 3.0 undecidable manual Pn -8.44 0
IV.HPAC.HHZ. 2020-07-04T00:31:38.32 0.3 undecidable manual P 166 116.7942 99 -0.25 64
IV.SCIAR.HHZ. 2020-07-04T00:31:37.59 3.0 undecidable manual Sg -4.97 0
IV.MUCR.HHZ. 2020-07-04T00:31:32.38 0.6 undecidable manual S 22 37.7289 120 -0.3 49
IV.RAFF.HHZ. 2020-07-04T00:31:31.79 0.3 undecidable manual P 209 63.8916 107 1.18 50
IV.SSY.HHZ. 2020-07-04T00:31:31.30 0.3 undecidable manual P 153 70.9734 105 -0.35 68
IV.ESML.HHZ. 2020-07-04T00:31:29.79 0.6 undecidable manual S 129 19.2696 141 0.91 41
IV.EMSG.HHZ. 2020-07-04T00:31:29.68 0.6 undecidable manual S 64 23.3544 135 0.06 53
IV.EPZF.HHZ. 2020-07-04T00:31:28.23 0.6 undecidable manual S 51 16.6722 145 -0.23 51
IV.GALF.HHZ. 2020-07-04T00:31:27.82 0.6 undecidable manual S 261 12.6762 152 -0.09 53
IV.MSFR.HHZ. 2020-07-04T00:31:27.28 0.3 undecidable manual P 343 35.4423 122 0.7 66
IV.HLNI.HHZ. 2020-07-04T00:31:27.42 0.3 undecidable manual P 161 44.5221 115 -0.39 71
IV.MUCR.HHZ. 2020-07-04T00:31:26.89 0.3 undecidable manual P 22 37.7289 120 0.01 78
IV.ESLN.HHZ. 2020-07-04T00:31:25.64 0.6 undecidable manual P 99 23.5542 134 0.51 48
IV.ECHR.HHE. 2020-07-04T00:31:24.78 0.6 undecidable manual P 105 18.4704 142 0.17 52
IV.EMSG.HHZ. 2020-07-04T00:31:24.98 0.6 undecidable manual P 64 23.3544 135 -0.14 52
IV.EPZF.HHZ. 2020-07-04T00:31:24.08 0.1 undecidable manual P 51 16.6722 145 -0.37 100
IV.ESML.HHZ. 2020-07-04T00:31:24.72 0.6 undecidable manual P 129 19.2696 141 0.03 53
IV.GALF.HHZ. 2020-07-04T00:31:23.75 0.1 undecidable manual P 261 12.6762 152 -0.38 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHN. ML:2.3 0.0011228780000000001 0.42 AML other m 2020-07-04T00:31:28.76
IV.EPZF.HHN. ML:2.4 0.001361809 0.56 AML other m 2020-07-04T00:31:29.02
IV.EPZF.HHE. ML:2.0 0.0005156741000000001 1.46 AML other m 2020-07-04T00:31:29.77
IV.GALF.HHE. ML:2.5 0.0016436415 0.4 AML other m 2020-07-04T00:31:29.36
IV.GALF.HNE. ML:1.5 0.00018008555 1.55 AML other m 2020-07-04T00:31:30.15
IV.GALF.HNN. ML:1.5 0.00014986002 0.71 AML other m 2020-07-04T00:31:31.32
IV.ESML.HHN. ML:2.0 0.00042544405 0.48 AML other m 2020-07-04T00:31:33.37
IV.ESML.HHE. ML:2.1 0.0006051294000000001 0.58 AML other m 2020-07-04T00:31:34.64
IV.HLNI.HHN. ML:1.3 0.000051663520000000006 0.1 AML other m 2020-07-04T00:31:37.99
IV.HLNI.HHE. ML:1.3 0.000055414320000000004 0.12 AML other m 2020-07-04T00:31:40.43
IV.SSY.HHE. ML:2.0 0.00015060935 0.22 AML other m 2020-07-04T00:31:50.19
IV.HPAC.HHE. ML:2.2 0.000115301615 1.04 AML other m 2020-07-04T00:31:54.91
IV.RAFF.HHE. ML:1.4 0.000047226275 1.14 AML other m 2020-07-04T00:31:59.67
IV.RAFF.HHN. ML:1.6 0.00005831455 1.26 AML other m 2020-07-04T00:32:02.82
IV.HPAC.HHN. ML:2.4 0.00020089195 1.18 AML other m 2020-07-04T00:32:17.72
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