Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 25-02-2018 and time 15:58:25 (Italy) in region 3 km SW Polizzi Generosa (PA)

A magnitude ML 2.4 earthquake occured in region: 3 km SW Polizzi Generosa (PA), on

  • 25-02-2018 14:58:25 (UTC)
  • 25-02-2018 15:58:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7910, 13.9880 at 9 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Polizzi Generosa PA 3 3407 3407
Castellana Sicula PA 5 3411 6818
Blufi PA 9 1029 7847
Caltavuturo PA 9 4017 11864
Petralia Sottana PA 9 2821 14685
Scillato PA 10 613 15298
Petralia Soprana PA 11 3360 18658
Bompietro PA 11 1401 20059
Sclafani Bagni PA 12 426 20485
Resuttano CL 13 2038 22523
Valledolmo PA 15 3594 26117
Collesano PA 15 4054 30171
Alimena PA 16 2032 32203
Geraci Siculo PA 17 1945 34148
Isnello PA 17 1589 35737
Castelbuono PA 18 8943 44680
Vallelunga Pratameno CL 18 3461 48141
Gangi PA 19 6811 54952
Villalba CL 20 1633 56585
Cerda PA 20 5330 61915
Gratteri PA 20 963 62878
Aliminusa PA 20 1236 64114

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km N of Caltanissetta (63360 inhabitants)
53 Km SE of Bagheria (55387 inhabitants)
64 Km NE of Agrigento (59770 inhabitants)
66 Km SE of Palermo (674435 inhabitants)
84 Km N of Gela (75827 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 2.4 2018-02-25
14:58:25		 37.7908 13.9883 9 2019-04-24
14:49:20		 Bollettino Sismico Italiano INGV 54614401
Reviewed
Rev100 		ML 2.3 2018-02-25
14:58:24		 37.7817 13.9903 8 2018-02-25
15:09:13		 Sala Sismica INGV-Roma 54145601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-25 14:58:25 ± 0.13
Latitude 37.7908 ± 0.0072
Longitude 13.9883 ± 0.0102
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 54614401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 784
Semi-minor axis of confidence ellipse (meter) 640
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 335
Circular confidence region, given by single value of horizontal uncertainty (meter) 780.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 0.83097
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 54145601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-02-25 15:09:13

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 54614401
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-03-15 09:50:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSFR.HHZ. 2018-02-25T14:58:43.75 0.3 undecidable manual S 63 59.2962 50 -0.24 70
IV.MMGO.HHZ. 2018-02-25T14:58:42.11 0.1 undecidable manual P 261 89.9433 50 1.36 56
IV.MBFT.HHZ. 2018-02-25T14:58:41.04 0.3 undecidable manual P 281 92.241 50 -0.08 68
IV.SOLUN.HHZ. 2018-02-25T14:58:41.14 0.3 undecidable manual S 310 52.0035 50 -0.91 57
IV.MPG.SHZ. 2018-02-25T14:58:37.72 0.3 undecidable manual P 307 68.6757 50 0.24 69
IV.MSFR.HHZ. 2018-02-25T14:58:36.08 0.3 undecidable manual P 63 59.2962 50 0.05 73
IV.CORL.HHZ. 2018-02-25T14:58:36.18 0.1 undecidable manual P 281 61.0944 50 -0.13 95
IV.GALF.HHZ. 2018-02-25T14:58:35.16 0.1 undecidable manual P 100 51.5151 50 0.33 93
IV.PLLN.EHZ. 2018-02-25T14:58:35.53 0.1 undecidable manual S 31 26.1516 108 0.81 83
IV.SOLUN.HHZ. 2018-02-25T14:58:34.62 0.1 undecidable manual P 310 52.0035 50 -0.29 94
IV.ALJA.HHZ. 2018-02-25T14:58:33.56 0.3 undecidable manual S 257 21.0678 112 0.48 71
IV.GIB.HHZ. 2018-02-25T14:58:33.74 0.1 undecidable manual S 8 22.3554 111 0.26 99
IV.CMDO.HHZ. 2018-02-25T14:58:33.58 0.1 undecidable manual P 202 39.0276 50 0.66 86
IV.RESU.HHZ. 2018-02-25T14:58:32.04 0.3 undecidable manual S 159 17.0718 117 0.24 75
IV.CSLB.HHZ. 2018-02-25T14:58:32.56 0.3 undecidable manual S 20 17.3715 116 0.67 67
IV.PLLN.EHZ. 2018-02-25T14:58:30.24 0.1 undecidable manual P 31 26.1516 108 -0.44 95
IV.PETRA.HHZ. 2018-02-25T14:58:30.31 0.3 undecidable manual S 67 12.0768 126 0 80
IV.ALJA.HHZ. 2018-02-25T14:58:29.26 0.1 undecidable manual P 257 21.0678 112 -0.47 95
IV.GIB.HHZ. 2018-02-25T14:58:29.74 0.1 undecidable manual P 8 22.3554 111 -0.22 100
IV.CSLB.HHZ. 2018-02-25T14:58:28.51 0.1 positive manual P 20 17.3715 116 -0.54 94
IV.RESU.HHZ. 2018-02-25T14:58:28.27 0.1 undecidable manual P 159 17.0718 117 -0.73 87
IV.PETRA.HHZ. 2018-02-25T14:58:27.76 0.1 positive manual P 67 12.0768 126 -0.37 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHE. ML:2.7 0.006075 1.36 AML other m 2018-02-25T14:58:31.04
IV.CSLB.HHE. ML:2.1 0.001185 0.22 AML other m 2018-02-25T14:58:33.78
IV.PETRA.HHN. ML:2.7 0.006529999999999999 1.36 AML other m 2018-02-25T14:58:34.80
IV.CSLB.HHN. ML:2.2 0.00145 1 AML other m 2018-02-25T14:58:35.71
IV.GIB.HHN. ML:2.7 0.0031100000000000004 1.56 AML other m 2018-02-25T14:58:36.85
IV.ALJA.HHE. ML:2.4 0.00185 0.2 AML other m 2018-02-25T14:58:37.42
IV.ALJA.HHN. ML:2.6 0.0026 0.3 AML other m 2018-02-25T14:58:37.42
IV.GIB.HHE. ML:2.8 0.0042450000000000005 1.52 AML other m 2018-02-25T14:58:37.15
IV.PLLN.EHN. ML:2.6 0.00236 0.4 AML other m 2018-02-25T14:58:39.75
IV.PLLN.EHE. ML:2.5 0.0017850000000000001 0.74 AML other m 2018-02-25T14:58:39.58
IV.GALF.HHE. ML:2.1 0.00033699999999999995 1.5 AML other m 2018-02-25T14:58:51.14
IV.MPG.SHN. ML:0.0 0.000144 0.76 AML other m 2018-02-25T14:58:51.20
IV.GALF.HHN. ML:2.2 0.000442 1.42 AML other m 2018-02-25T14:58:55.97
IV.MBFT.HHN. ML:2.1 0.00014315 0.5 AML other m 2018-02-25T14:59:00.33
IV.MBFT.HHE. ML:2.1 0.0001565 1.12 AML other m 2018-02-25T14:59:02.01
IV.MMGO.HHE. ML:1.9 0.00009025 0.92 AML other m 2018-02-25T14:59:02.98
IV.MMGO.HHN. ML:1.8 0.0000804 0.78 AML other m 2018-02-25T14:59:06.76
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
Waveforms Seismic signals in miniseed + resp format Download