Earthquake with magnitude of ML 1.6 on date 25-02-2021 and time 02:58:23 (UTC) in region 5 km NE Gangi (PA)

A magnitude ML 1.6 earthquake occured in region: 5 km NE Gangi (PA), on

  • 25-02-2021 02:58:23 (UTC)
  • 25-02-2021 03:58:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.82, 14.25 at 6 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Gangi PA 5 6811 6811
Geraci Siculo PA 9 1945 8756
Castel di Lucio ME 9 1294 10050
San Mauro Castelverde PA 11 1701 11751
Sperlinga EN 11 805 12556
Petralia Soprana PA 13 3360 15916
Petralia Sottana PA 14 2821 18737
Bompietro PA 15 1401 20138
Nicosia EN 16 13899 34037
Mistretta ME 16 4791 38828
Pettineo ME 17 1350 40178
Blufi PA 17 1029 41207
Tusa ME 18 2925 44132
Motta d'Affermo ME 18 739 44871
Castellana Sicula PA 18 3411 48282
Alimena PA 19 2032 50314
Castelbuono PA 19 8943 59257
Reitano ME 19 806 60063

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NE of Caltanissetta (63360 inhabitants)
71 Km E of Bagheria (55387 inhabitants)
82 Km NE of Agrigento (59770 inhabitants)
82 Km W of Catania (314555 inhabitants)
84 Km E of Palermo (674435 inhabitants)
84 Km W of Acireale (52622 inhabitants)
84 Km N of Gela (75827 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.6 2021-02-25
02:58:23
37.82 14.25 6 2021-02-25
03:05:05
Sala Sismica INGV-Roma 87468131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-25 02:58:23 ± 0.16
Latitude 37.82 ± 0.01
Longitude 14.25 ± 0.01
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87468131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1049
Semi-minor axis of confidence ellipse (meter) 817
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 25
Circular confidence region, given by single value of horizontal uncertainty (meter) 1050
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.10522
Epicentral distance of station farthest from the epicenter (degree) 0.83097
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 87468131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-25 03:05:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ILOS.HHZ. 2021-02-25T02:58:40.08 0.1 undecidable manual P 41 0.831 50 0.75 72
IV.RAFF.HHZ. 2021-02-25T02:58:35.02 0.1 undecidable manual P 171 0.6079 50 -0.5 83
IV.MUCR.HHZ. 2021-02-25T02:58:34.12 0.1 undecidable manual P 66 0.5405 50 -0.25 89
IV.CPTP.HHZ. 2021-02-25T02:58:33.55 0.1 undecidable manual P 189 0.4218 50 1.22 63
IV.RESU.HHZ. 2021-02-25T02:58:32.61 0.6 undecidable manual S 220 0.232 102 0.45 45
IV.SCIAR.HHZ. 2021-02-25T02:58:31.24 0.6 negative manual P 287 0.4092 50 -0.89 37
IV.MSFR.HHZ. 2021-02-25T02:58:30.53 0.1 undecidable manual P 52 0.3435 98 -0.19 94
IV.CSLB.HHZ. 2021-02-25T02:58:30.47 0.3 undecidable manual S 307 0.1871 105 -0.01 75
IV.PLLN.EHZ. 2021-02-25T02:58:30.90 0.3 undecidable manual S 334 0.1871 105 0.42 69
IV.GALF.HHZ. 2021-02-25T02:58:29.22 0.3 negative manual P 114 0.277 100 -0.04 74
IV.CAGR.HHE. 2021-02-25T02:58:29.84 0.6 undecidable manual P 135 0.2842 100 0.42 45
IV.PETRA.HHZ. 2021-02-25T02:58:28.07 0.3 undecidable manual S 275 0.1052 116 0.58 67
IV.PLLN.EHZ. 2021-02-25T02:58:27.41 1.0 positive manual P 334 0.1871 105 0.09 25
IV.GIB.HHE. 2021-02-25T02:58:27.97 0.3 undecidable manual P 314 0.241 102 -0.5 67
IV.RESU.HHZ. 2021-02-25T02:58:27.59 0.1 undecidable manual P 220 0.232 102 -0.7 83
IV.CSLB.HHZ. 2021-02-25T02:58:26.91 0.6 positive manual P 307 0.1871 105 -0.41 46
IV.PETRA.HHZ. 2021-02-25T02:58:25.48 0.1 positive manual P 275 0.1052 116 -0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHN. ML:1.8 0.0008835 0.26 AML other m 2021-02-25T02:58:28.59
IV.PETRA.HHE. ML:1.7 0.00075 0.22 AML other m 2021-02-25T02:58:28.60
IV.CSLB.HHE. ML:1 7.31E-5 1.28 AML other m 2021-02-25T02:58:32.00
IV.CSLB.HHN. ML:1.2 0.0001145 1.24 AML other m 2021-02-25T02:58:32.99
IV.PLLN.EHN. ML:1.4 0.000204 1.14 AML other m 2021-02-25T02:58:32.75
IV.PLLN.EHE. ML:1.4 0.0001855 0.5 AML other m 2021-02-25T02:58:33.45
IV.GALF.HHE. ML:1.8 0.0002895 0.5 AML other m 2021-02-25T02:58:42.32
IV.SCIAR.HHE. ML:1.4 8.385E-5 1.34 AML other m 2021-02-25T02:58:43.73
IV.SCIAR.HHN. ML:1.5 9.12E-5 1.2 AML other m 2021-02-25T02:58:44.02
IV.MUCR.HHE. ML:1.4 4.815E-5 1.52 AML other m 2021-02-25T02:58:45.89
IV.GALF.HHN. ML:1.8 0.000304 0.52 AML other m 2021-02-25T02:58:45.43
IV.MUCR.HHN. ML:1.3 4.305E-5 0.5 AML other m 2021-02-25T02:58:47.00
IV.CPTP.HHE. ML:0 8.745E-5 0.42 AML other m 2021-02-25T02:58:53.36
IV.CPTP.HHN. ML:0 0.00010445 0.74 AML other m 2021-02-25T02:58:55.51
IV.ILOS.HHE. ML:2.1 0.0001455 1.58 AML other m 2021-02-25T02:59:02.01
IV.ILOS.HNN. ML:2.3 0.0002255 1.34 AML other m 2021-02-25T02:59:02.19
IV.ILOS.HHN. ML:2.2 0.000188 0.52 AML other m 2021-02-25T02:59:02.21
IV.ILOS.HNE. ML:2.1 0.0001325 0.4 AML other m 2021-02-25T02:59:04.74
IV.MSFR.HHE. ML:1 3.661553E-5 0.3008 AML other m 2021-02-25T02:58:38.39
IV.MSFR.HHN. ML:1 3.786925E-5 0.3408 AML other m 2021-02-25T02:58:41.34
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download