Earthquake with magnitude of ML 1.8 on date 24-04-2020 and time 14:30:59 (UTC) in region 1 km S Blufi (PA)

A magnitude ML 1.8 earthquake occured in region: 1 km S Blufi (PA), on

  • 24-04-2020 14:30:59 (UTC)
  • 24-04-2020 16:30:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.75, 14.08 at 38 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
Blufi PA 1 1029 1029
Bompietro PA 2 1401 2430
Castellana Sicula PA 5 3411 5841
Petralia Soprana PA 6 3360 9201
Alimena PA 7 2032 11233
Petralia Sottana PA 7 2821 14054
Resuttano CL 8 2038 16092
Polizzi Generosa PA 10 3407 19499
Gangi PA 13 6811 26310
Geraci Siculo PA 14 1945 28255
Santa Caterina Villarmosa CL 18 5388 33643
Caltavuturo PA 18 4017 37660
Scillato PA 19 613 38273
Villarosa EN 20 4937 43210

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km N of Caltanissetta (63360 inhabitants)
62 Km SE of Bagheria (55387 inhabitants)
65 Km NE of Agrigento (59770 inhabitants)
75 Km SE of Palermo (674435 inhabitants)
77 Km N of Gela (75827 inhabitants)
93 Km W of Catania (314555 inhabitants)
97 Km W of Acireale (52622 inhabitants)
98 Km NW of Vittoria (63339 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 1.8 2020-04-24
14:30:59
37.75 14.08 38 2020-07-18
21:08:39
Bollettino Sismico Italiano INGV 79927441
Reviewed
Rev100
ML 1.9 2020-04-24
14:30:59
37.76 14.06 41 2020-04-24
14:50:06
Sala Sismica INGV-Roma 78536591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-24 14:30:59 ± 0.19
Latitude 37.75 ± 0.01
Longitude 14.08 ± 0.02
Depth (km) 38 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79927441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1550
Semi-minor axis of confidence ellipse (meter) 1325
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 299
Circular confidence region, given by single value of horizontal uncertainty (meter) 1550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.09173
Epicentral distance of station farthest from the epicenter (degree) 0.98566
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 79927441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-05 13:33:58

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 78536591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-24 14:50:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SSY.HHZ. 2020-04-24T14:31:30.96 0.3 undecidable manual S 126 0.9857 54 0.49 60
IV.SOLUN.HHE. 2020-04-24T14:31:20.79 0.3 undecidable manual S 309 0.5513 54 0.72 65
IV.SSY.HHZ. 2020-04-24T14:31:17.04 0.1 undecidable manual P 126 0.9857 54 -0.39 79
IV.SCIAR.HHE. 2020-04-24T14:31:14.78 0.3 undecidable manual S 307 0.3238 133 0.14 73
IV.PLLN.EHZ. 2020-04-24T14:31:13.54 0.3 undecidable manual S 12 0.2509 141 0.36 70
IV.GIB.HHE. 2020-04-24T14:31:13.61 0.6 undecidable manual S 351 0.2464 141 0.52 45
IV.SOLUN.HHE. 2020-04-24T14:31:12.02 0.1 undecidable manual P 309 0.5513 54 0.6 88
IV.CSLB.HHZ. 2020-04-24T14:31:12.39 0.6 undecidable manual S 355 0.1916 148 0.24 48
IV.CLTA.HHE. 2020-04-24T14:31:12.39 0.1 undecidable manual P 189 0.5954 54 0.35 88
IV.PETRA.HHZ. 2020-04-24T14:31:11.14 0.6 undecidable manual S 19 0.0917 164 0.2 48
IV.RESU.HHZ. 2020-04-24T14:31:11.31 0.6 undecidable manual S 189 0.1007 162 0.28 45
IV.MSFR.HHE. 2020-04-24T14:31:10.65 0.1 undecidable manual P 55 0.4964 54 -0.03 96
IV.GALF.HHZ. 2020-04-24T14:31:09.52 0.3 undecidable manual P 95 0.3885 128 0.38 67
IV.GIB.HHE. 2020-04-24T14:31:07.13 0.1 undecidable manual P 351 0.2464 141 -0.26 95
IV.PLLN.EHZ. 2020-04-24T14:31:07.11 0.1 undecidable manual P 12 0.2509 141 -0.33 94
IV.SCIAR.HHE. 2020-04-24T14:31:07.93 0.3 undecidable manual P 307 0.3238 133 -0.36 69
IV.CSLB.HHZ. 2020-04-24T14:31:06.24 0.1 undecidable manual P 355 0.1916 148 -0.61 88
IV.PETRA.HHZ. 2020-04-24T14:31:05.68 0.1 undecidable manual P 19 0.0917 164 -0.47 96
IV.RESU.HHZ. 2020-04-24T14:31:05.83 0.1 undecidable manual P 189 0.1007 162 -0.37 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHE. ML:2 0.0004055 0.38 AML other m 2020-04-24T14:31:12.21
IV.RESU.HHE. ML:2 0.000362 0.52 AML other m 2020-04-24T14:31:12.27
IV.CSLB.HHN. ML:1.5 9.535E-5 0.48 AML other m 2020-04-24T14:31:12.71
IV.PETRA.HHN. ML:1.7 0.0001875 1.04 AML other m 2020-04-24T14:31:12.73
IV.CSLB.HHE. ML:1.3 7.125E-5 0.42 AML other m 2020-04-24T14:31:12.75
IV.RESU.HHN. ML:2 0.000406 1.42 AML other m 2020-04-24T14:31:12.19
IV.PLLN.EHN. ML:2 0.000283 1.28 AML other m 2020-04-24T14:31:15.03
IV.PLLN.EHE. ML:1.8 0.0001865 0.74 AML other m 2020-04-24T14:31:16.40
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download