Earthquake with magnitude of ML 1.2 on date 15-01-2021 and time 08:32:48 (Italy) in region 4 km E Collesano (PA)

A magnitude ML 1.2 earthquake occured in region: 4 km E Collesano (PA), on

  • 15-01-2021 07:32:48 (UTC)
  • 15-01-2021 08:32:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.91, 13.98 at 9 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
Collesano PA 4 4054 4054
Isnello PA 5 1589 5643
Gratteri PA 7 963 6606
Scillato PA 9 613 7219
Castelbuono PA 10 8943 16162
Polizzi Generosa PA 11 3407 19569
Lascari PA 11 3588 23157
Caltavuturo PA 13 4017 27174
Campofelice di Roccella PA 13 7537 34711
Cerda PA 15 5330 40041
Sclafani Bagni PA 15 426 40467
Petralia Sottana PA 15 2821 43288
Castellana Sicula PA 15 3411 46699
Cefal├╣ PA 15 14393 61092
Geraci Siculo PA 16 1945 63037
Petralia Soprana PA 17 3360 66397
Pollina PA 18 2974 69371
Aliminusa PA 18 1236 70607
San Mauro Castelverde PA 18 1701 72308
Sciara PA 19 2822 75130
Blufi PA 19 1029 76159

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km E of Bagheria (55387 inhabitants)
47 Km N of Caltanissetta (63360 inhabitants)
59 Km E of Palermo (674435 inhabitants)
75 Km NE of Agrigento (59770 inhabitants)
97 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 1.2 2021-01-15
07:32:48
37.91 13.98 9 2021-01-15
07:41:04
Sala Sismica INGV-Roma 86260591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-15 07:32:48 ± 0.44
Latitude 37.91 ± 0.01
Longitude 13.98 ± 0.03
Depth (km) 9 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86260591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1855
Semi-minor axis of confidence ellipse (meter) 1622
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 72
Circular confidence region, given by single value of horizontal uncertainty (meter) 1860
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 216
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) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.06655
Epicentral distance of station farthest from the epicenter (degree) 0.268
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 86260591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-15 07:41:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RESU.HHZ. 2021-01-15T07:32:59.54 0.6 undecidable manual S 167 0.268 107 0.38 45
IV.PLLN.EHZ. 2021-01-15T07:32:55.61 0.6 undecidable manual S 57 0.1529 118 0.59 43
IV.RESU.HHZ. 2021-01-15T07:32:54.94 0.6 negative manual P 167 0.268 107 0.35 45
IV.PETRA.HHZ. 2021-01-15T07:32:54.24 0.6 undecidable manual S 125 0.1295 122 0 50
IV.GIB.HHZ. 2021-01-15T07:32:53.42 0.6 undecidable manual S 23 0.089 133 0.42 46
IV.CSLB.HHZ. 2021-01-15T07:32:52.21 0.6 undecidable manual S 64 0.0665 141 -0.21 49
IV.PLLN.EHZ. 2021-01-15T07:32:52.03 1.0 negative manual P 57 0.1529 118 -0.17 24
IV.PETRA.HHZ. 2021-01-15T07:32:51.29 0.3 positive manual P 125 0.1295 122 -0.47 68
IV.CSLB.HHZ. 2021-01-15T07:32:50.42 0.1 positive manual P 64 0.0665 141 -0.28 96
IV.GIB.HHZ. 2021-01-15T07:32:50.99 0.1 positive manual P 23 0.089 133 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHE. ML:1.3 0.000188 0.54 AML other m 2021-01-15T07:32:54.68
IV.PETRA.HHN. ML:1.2 0.000182 0.32 AML other m 2021-01-15T07:32:56.28
IV.CSLB.HHE. ML:0.9 0.00012357665 0.384 AML other m 2021-01-15T07:32:52.43
IV.CSLB.HHN. ML:1.2 0.000237357 0.3968 AML other m 2021-01-15T07:32:52.45
IV.GIB.HHE. ML:1.3 0.0002468187 0.7616 AML other m 2021-01-15T07:32:57.92
IV.GIB.HHN. ML:1.3 0.00026252105 0.5184 AML other m 2021-01-15T07:32:56.32
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