Earthquake with magnitude of ML 1.5 on date 21-10-2020 and time 09:27:42 (Italy) in region Costa Siciliana centro settentrionale (Palermo)

A magnitude ML 1.5 earthquake occured in region: Costa Siciliana centro settentrionale (Palermo), on

  • 21-10-2020 07:27:42 (UTC)
  • 21-10-2020 09:27:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.11, 13.6 at 10 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
Santa Flavia PA 7 11272 11272
Casteldaccia PA 8 11685 22957
Bagheria PA 8 55387 78344
Altavilla Milicia PA 8 8210 86554
Ficarazzi PA 12 12933 99487
Trabia PA 14 10505 109992
Villabate PA 14 20252 130244
Misilmeri PA 15 29258 159502
Termini Imerese PA 16 26263 185765
Belmonte Mezzagno PA 19 11273 197038

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km E of Bagheria (55387 inhabitants)
20 Km E of Palermo (674435 inhabitants)
80 Km NW of Caltanissetta (63360 inhabitants)
89 Km N of Agrigento (59770 inhabitants)
95 Km E of Trapani (68759 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 1.5 2020-10-21
07:27:42
38.11 13.6 10 2020-10-21
08:09:02
Sala Sismica INGV-Roma 83982461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-21 07:27:42 ± 0.04
Latitude 38.11 ± 0.00
Longitude 13.60 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83982461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 359
Semi-minor axis of confidence ellipse (meter) 90
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 198
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.07
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.78601
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 83982461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-21 08:09:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SSY.HHN. 2020-10-21T07:28:12.11 3.0 positive manual P 1.25 0
IV.ECTS.HHZ. 2020-10-21T07:28:07.00 3.0 undecidable manual P 0.01 0
IV.GALF.HHZ. 2020-10-21T07:28:01.66 3.0 positive manual P 0.92 0
IV.MSFR.HHE. 2020-10-21T07:27:57.66 1.0 undecidable manual P 95 0.786 50 0.21 22
IV.CSLB.HHZ. 2020-10-21T07:27:57.03 1.0 undecidable manual S 115 0.4011 50 -0.01 25
IV.SCIAC.HHZ. 2020-10-21T07:27:56.32 1.0 undecidable manual P 214 0.7087 50 0.19 23
IV.GIB.HHZ. 2020-10-21T07:27:55.67 1.0 undecidable manual S 109 0.3579 50 -0.09 25
IV.USI.HHE. 2020-10-21T07:27:55.76 1.0 undecidable manual P 332 0.6826 50 0.09 23
IV.RESU.HHZ. 2020-10-21T07:27:54.19 1.0 undecidable manual P 142 0.5873 50 0.15 23
IV.CORL.HHZ. 2020-10-21T07:27:54.37 1.0 undecidable manual S 227 0.3148 50 -0.1 25
IV.MFNL.HHE. 2020-10-21T07:27:54.75 1.0 undecidable manual P 239 0.6187 50 0.17 23
IV.MBFT.HHE. 2020-10-21T07:27:53.13 1.0 undecidable manual P 252 0.5315 50 0.04 24
IV.PETRA.HHZ. 2020-10-21T07:27:52.33 1.0 undecidable manual P 124 0.4919 50 -0.09 24
IV.SCIAR.HHZ. 2020-10-21T07:27:51.17 1.0 undecidable manual S 144 0.2068 113 0.07 26
IV.PLLN.EHZ. 2020-10-21T07:27:51.66 1.0 undecidable manual P 105 0.4452 50 0.04 25
IV.CSLB.HHZ. 2020-10-21T07:27:50.75 0.6 positive manual P 115 0.4011 50 -0.11 49
IV.MPG.HHZ. 2020-10-21T07:27:50.40 1.0 undecidable manual S 286 0.1934 115 -0.23 25
IV.GIB.HHZ. 2020-10-21T07:27:50.09 0.1 positive manual P 109 0.3579 50 -0.03 100
IV.CORL.HHZ. 2020-10-21T07:27:49.31 0.6 positive manual P 227 0.3148 50 -0.07 50
IV.MPG.HHZ. 2020-10-21T07:27:47.22 0.3 negative manual P 286 0.1934 115 0.05 77
IV.SCIAR.HHZ. 2020-10-21T07:27:47.42 0.3 negative manual P 144 0.2068 113 -0.01 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MPG.HHN. ML:0 0.00013089 0.5056 AML other m 2020-10-21T07:27:51.10
IV.MPG.HHE. ML:0 0.000111212245 0.32 AML other m 2020-10-21T07:27:52.06
IV.SCIAR.HNN. ML:0 0.00027497 0.4352 AML other m 2020-10-21T07:27:54.68
IV.SCIAR.HHE. ML:0 0.00026068505 0.32 AML other m 2020-10-21T07:27:53.56
IV.SCIAR.HNE. ML:0 0.00030373135 0.352 AML other m 2020-10-21T07:27:53.55
IV.SCIAR.HHN. ML:0 0.0001596328 0.48 AML other m 2020-10-21T07:27:51.94
IV.CORL.HHE. ML:1.4 8.8803925E-5 1.0816 AML other m 2020-10-21T07:27:55.20
IV.CORL.HHN. ML:1.3 7.7377055E-5 0.5184 AML other m 2020-10-21T07:27:56.12
IV.GIB.HHE. ML:1.3 7.2972445E-5 0.7424 AML other m 2020-10-21T07:27:56.40
IV.GIB.HHN. ML:1.6 0.00014715975 0.7232 AML other m 2020-10-21T07:27:59.16
IV.CSLB.HHE. ML:1 2.8687895E-5 0.6016 AML other m 2020-10-21T07:27:57.17
IV.CSLB.HHN. ML:1.1 3.9350295E-5 0.8 AML other m 2020-10-21T07:27:58.75
IV.PETRA.HHE. ML:1.6 8.9735045E-5 0.6784 AML other m 2020-10-21T07:28:11.67
IV.PETRA.HHN. ML:1.7 0.00011095727 0.6592 AML other m 2020-10-21T07:28:09.09
IV.RESU.HHE. ML:1.4 5.1490875E-5 0.9984 AML other m 2020-10-21T07:28:19.74
IV.RESU.HHN. ML:1.6 6.584554E-5 0.5632 AML other m 2020-10-21T07:28:08.98
IV.MFNL.HHE. ML:1.9 0.00013943475 0.0576 AML other m 2020-10-21T07:28:15.84
IV.MFNL.HHN. ML:1.7 9.0050845E-5 0.0576 AML other m 2020-10-21T07:28:08.53
IV.SCIAC.HHE. ML:1.4 3.6321585E-5 0.5248 AML other m 2020-10-21T07:28:00.99
IV.SCIAC.HHN. ML:1.5 4.4687915E-5 0.704 AML other m 2020-10-21T07:28:15.48
IV.GALF.HHE. ML:2 0.00010224348 0.5376 AML other m 2020-10-21T07:28:03.52
IV.GALF.HHN. ML:2 0.0001134403 0.8384 AML other m 2020-10-21T07:28:25.98
IV.GALF.HNE. ML:2.1 0.0001302831 0.992 AML other m 2020-10-21T07:28:08.32
IV.GALF.HNN. ML:2.1 0.0001399097 0.6272 AML other m 2020-10-21T07:28:25.94
IV.ECTS.HHN. ML:2 6.4237475E-5 0.5376 AML other m 2020-10-21T07:28:28.05
IV.SSY.HHE. ML:2.4 0.0001100132 0.5248 AML other m 2020-10-21T07:28:48.04
IV.SSY.HHN. ML:2.7 0.00019934195 0.48 AML other m 2020-10-21T07:28:50.85
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