Earthquake with magnitude of ML 1.5 on date 20-06-2009 and time 16:08:55 (UTC) in region 4 km NW Geraci Siculo (PA)

A magnitude ML 1.5 earthquake occured in region: 4 km NW Geraci Siculo (PA), on

  • 20-06-2009 16:08:55 (UTC)
  • 20-06-2009 18:08:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8890, 14.1290 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 4 1945 1945
San Mauro Castelverde PA 6 1701 3646
Castelbuono PA 6 8943 12589
Petralia Sottana PA 10 2821 15410
Petralia Soprana PA 10 3360 18770
Pollina PA 12 2974 21744
Gangi PA 12 6811 28555
Isnello PA 12 1589 30144
Castellana Sicula PA 14 3411 33555
Polizzi Generosa PA 14 3407 36962
Tusa ME 15 2925 39887
Blufi PA 16 1029 40916
Bompietro PA 16 1401 42317
Castel di Lucio ME 16 1294 43611
Gratteri PA 16 963 44574
Pettineo ME 17 1350 45924
Collesano PA 17 4054 49978
Motta d'Affermo ME 18 739 50717
Cefalù PA 19 14393 65110
Scillato PA 20 613 65723

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km N of Caltanissetta (63360 inhabitants)
58 Km E of Bagheria (55387 inhabitants)
72 Km E of Palermo (674435 inhabitants)
80 Km NE of Agrigento (59770 inhabitants)
92 Km N of Gela (75827 inhabitants)
95 Km W of Catania (314555 inhabitants)
96 Km W of Acireale (52622 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 1.8
ML 1.5
2009-06-20
16:08:55
37.889 14.129 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 899259
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-06-20 16:08:55 ± 0.26
Latitude 37.8890 ± 0.0153
Longitude 14.1290 ± 0.0239
Depth (km) 10 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 899259

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2077
Semi-minor axis of confidence ellipse (meter) 1597
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 317
Circular confidence region, given by single value of horizontal uncertainty (meter) 2701.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 187
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.24911
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 899259
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:06:08

Md:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 899259
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:06:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VCEL.EHE. 2009-06-20T16:09:09.19 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHN. 2009-06-20T16:09:09.57 10.0 undecidable manual Pg 0 0 0
IV.RESU.HHZ. 2009-06-20T16:09:05.08 0.3 undecidable manual Sg 193 27.6501 -0.079 67
IV.RESU.HHZ. 2009-06-20T16:09:01.04 0.3 undecidable manual Pg 193 27.6501 0.099 66
IV.GIB.EHZ. 2009-06-20T16:09:01.85 0.3 undecidable manual Sg 321 14.3745 0.522 69
IV.PLLN.SHZ. 2009-06-20T16:09:00.88 0.3 undecidable manual Sg 6 11.5773 0.307 75
IV.CSLB.SHZ. 2009-06-20T16:08:59.75 0.1 undecidable manual Sg 311 8.1807 -0.023 97
IV.PLLN.SHZ. 2009-06-20T16:08:58.22 0.1 undecidable manual Pg 6 11.5773 -0.074 100
IV.GIB.EHZ. 2009-06-20T16:08:58.38 0.3 undecidable manual Pg 321 14.3745 -0.352 72
IV.CSLB.SHZ. 2009-06-20T16:08:57.52 0.3 undecidable manual Pg 311 8.1807 -0.312 72
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download