Earthquake with magnitude of ML 1.6 on date 22-02-2020 and time 12:05:57 (Italy) in region 3 km W Geraci Siculo (PA)

A magnitude ML 1.6 earthquake occured in region: 3 km W Geraci Siculo (PA), on

  • 22-02-2020 11:05:57 (UTC)
  • 22-02-2020 12:05:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.85, 14.12 at 22 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
Geraci Siculo PA 3 1945 1945
Petralia Sottana PA 6 2821 4766
Petralia Soprana PA 6 3360 8126
San Mauro Castelverde PA 9 1701 9827
Castelbuono PA 10 8943 18770
Gangi PA 10 6811 25581
Castellana Sicula PA 10 3411 28992
Polizzi Generosa PA 11 3407 32399
Blufi PA 12 1029 33428
Bompietro PA 12 1401 34829
Isnello PA 14 1589 36418
Pollina PA 16 2974 39392
Castel di Lucio ME 17 1294 40686
Collesano PA 18 4054 44740
Alimena PA 18 2032 46772
Gratteri PA 18 963 47735
Tusa ME 18 2925 50660
Scillato PA 19 613 51273
Pettineo ME 20 1350 52623

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km N of Caltanissetta (63360 inhabitants)
59 Km E of Bagheria (55387 inhabitants)
72 Km E of Palermo (674435 inhabitants)
76 Km NE of Agrigento (59770 inhabitants)
88 Km N of Gela (75827 inhabitants)
94 Km W of Catania (314555 inhabitants)
96 Km W of Acireale (52622 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
Rev 100 ML 1.6 2020-02-22
11:05:57
37.85 14.12 22 2020-02-22
11:12:22
Sala Sismica INGV-Roma 76719461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-22 11:05:57 ± 0.71
Latitude 37.85 ± 0.02
Longitude 14.12 ± 0.11
Depth (km) 22 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76719461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 9473
Semi-minor axis of confidence ellipse (meter) 1498
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 85
Circular confidence region, given by single value of horizontal uncertainty (meter) 9470
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.52
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.21134
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 76719461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-22 11:12:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.IACL.HHZ. 2020-02-22T11:06:23.52 3.0 undecidable manual S -0.05 0
IV.RESU.HHZ. 2020-02-22T11:06:07.15 0.6 undecidable manual S 193 0.2113 127 0.15 49
IV.GIB.HHZ. 2020-02-22T11:06:06.06 0.6 undecidable manual S 332 0.1556 137 0.31 48
IV.PLLN.EHZ. 2020-02-22T11:06:05.98 0.1 undecidable manual S 8 0.1412 140 0.51 100
IV.CSLB.HHZ. 2020-02-22T11:06:05.02 0.6 undecidable manual S 331 0.0971 151 0.3 50
IV.PETRA.HHZ. 2020-02-22T11:06:03.38 0.6 undecidable manual S 188 0.0198 174 -0.63 44
IV.RESU.HHZ. 2020-02-22T11:06:03.14 0.1 undecidable manual P 193 0.2113 127 0.29 96
IV.PLLN.EHZ. 2020-02-22T11:06:02.60 0.6 positive manual P 8 0.1412 140 0.63 47
IV.GIB.HHZ. 2020-02-22T11:06:01.72 0.1 undecidable manual P 332 0.1556 137 -0.41 100
IV.PETRA.HHZ. 2020-02-22T11:06:00.69 0.1 positive manual P 188 0.0198 174 -0.43 99
IV.CSLB.HHZ. 2020-02-22T11:06:00.57 0.3 undecidable manual P 331 0.0971 151 -0.97 62
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHN. ML:1.8 0.0004365 0.54 AML other m 2020-02-22T11:06:05.72
IV.CSLB.HHE. ML:1.4 0.0001585 0.24 AML other m 2020-02-22T11:06:05.68
IV.GIB.HHN. ML:1.9 0.0004495 0.44 AML other m 2020-02-22T11:06:06.60
IV.PETRA.HHE. ML:1.9 0.000579 1.32 AML other m 2020-02-22T11:06:07.23
IV.CSLB.HHN. ML:1.3 0.0001335 0.28 AML other m 2020-02-22T11:06:07.19
IV.GIB.HHE. ML:1.6 0.000252 0.5 AML other m 2020-02-22T11:06:07.20
IV.RESU.HHN. ML:1.7 0.000233 0.42 AML other m 2020-02-22T11:06:07.75
IV.RESU.HHE. ML:1.4 0.000129 1.42 AML other m 2020-02-22T11:06:08.00
IV.PLLN.EHE. ML:1.4 0.0001305 1.16 AML other m 2020-02-22T11:06:10.08
IV.PLLN.EHN. ML:1.4 0.000152 0.68 AML other m 2020-02-22T11:06:13.63
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