Earthquake with magnitude of ML 1.3 on date 25-02-2021 and time 03:26:27 (UTC) in region 2 km NE Gangi (PA)

A magnitude ML 1.3 earthquake occured in region: 2 km NE Gangi (PA), on

  • 25-02-2021 03:26:27 (UTC)
  • 25-02-2021 04:26:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.81, 14.21 at 14 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 2 6811 6811
Geraci Siculo PA 7 1945 8756
Petralia Soprana PA 9 3360 12116
Petralia Sottana PA 11 2821 14937
San Mauro Castelverde PA 12 1701 16638
Castel di Lucio ME 12 1294 17932
Bompietro PA 12 1401 19333
Sperlinga EN 13 805 20138
Blufi PA 14 1029 21167
Castellana Sicula PA 15 3411 24578
Alimena PA 16 2032 26610
Castelbuono PA 18 8943 35553
Nicosia EN 18 13899 49452
Pettineo ME 19 1350 50802
Mistretta ME 19 4791 55593
Polizzi Generosa PA 19 3407 59000
Tusa ME 19 2925 61925

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NE of Caltanissetta (63360 inhabitants)
68 Km E of Bagheria (55387 inhabitants)
79 Km NE of Agrigento (59770 inhabitants)
82 Km E of Palermo (674435 inhabitants)
83 Km N of Gela (75827 inhabitants)
84 Km W of Catania (314555 inhabitants)
87 Km W of Acireale (52622 inhabitants)
100 Km N of Vittoria (63339 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 1.3 2021-02-25
03:26:27
37.81 14.21 14 2021-02-25
03:34:44
Sala Sismica INGV-Roma 87469581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-25 03:26:27 ± 0.17
Latitude 37.81 ± 0.01
Longitude 14.21 ± 0.02
Depth (km) 14 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87469581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1286
Semi-minor axis of confidence ellipse (meter) 909
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 247
Circular confidence region, given by single value of horizontal uncertainty (meter) 1290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.08094
Epicentral distance of station farthest from the epicenter (degree) 0.56927
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 87469581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-25 03:34:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2021-02-25T03:26:38.65 0.3 undecidable manual P 66 0.5693 93 0.2 68
IV.SCIAR.HHZ. 2021-02-25T03:26:35.54 0.3 undecidable manual P 289 0.3885 95 0.17 71
IV.CSLB.HHZ. 2021-02-25T03:26:35.37 0.1 undecidable manual S 315 0.1754 109 0.29 96
IV.GALF.HHZ. 2021-02-25T03:26:33.85 0.1 undecidable manual P 110 0.2968 98 0.04 99
IV.RESU.HHZ. 2021-02-25T03:26:32.42 0.1 undecidable manual P 217 0.2068 104 0.12 99
IV.PETRA.HHZ. 2021-02-25T03:26:32.89 0.1 undecidable manual S 285 0.0809 138 0.16 100
IV.GIB.HHZ. 2021-02-25T03:26:32.67 0.1 undecidable manual P 320 0.2311 102 -0.04 100
IV.PLLN.EHZ. 2021-02-25T03:26:31.96 0.3 undecidable manual P 343 0.1889 107 -0.04 76
IV.CSLB.HHZ. 2021-02-25T03:26:31.38 0.1 undecidable manual P 315 0.1754 109 -0.41 94
IV.PETRA.HHZ. 2021-02-25T03:26:30.07 0.1 undecidable manual P 285 0.0809 138 -0.36 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHN. ML:1.6 0.000455 0.26 AML other m 2021-02-25T03:26:33.22
IV.PETRA.HHE. ML:1.5 0.000336 0.9 AML other m 2021-02-25T03:26:35.79
IV.CSLB.HHE. ML:0.8 4.37E-5 0.72 AML other m 2021-02-25T03:26:36.62
IV.CSLB.HHN. ML:1 6.61E-5 0.76 AML other m 2021-02-25T03:26:36.61
IV.RESU.HHE. ML:1.2 9.495E-5 0.46 AML other m 2021-02-25T03:26:40.16
IV.RESU.HHN. ML:1.4 0.0001665 0.8 AML other m 2021-02-25T03:26:40.35
IV.GALF.HHN. ML:1.6 0.000173 0.9 AML other m 2021-02-25T03:26:43.78
IV.GALF.HHE. ML:1.5 0.0001335 1.58 AML other m 2021-02-25T03:26:45.99
IV.SCIAR.HHN. ML:1.2 4.375E-5 1.64 AML other m 2021-02-25T03:26:45.06
IV.SCIAR.HHE. ML:1.2 4.295E-5 0.52 AML other m 2021-02-25T03:26:48.67
IV.MUCR.HHE. ML:1.2 3.04E-5 0.5 AML other m 2021-02-25T03:26:49.74
IV.MUCR.HHN. ML:1.2 3.08E-5 0.38 AML other m 2021-02-25T03:26:51.41
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