Earthquake with magnitude of ML 1.8 on date 02-12-2019 and time 11:31:06 (UTC) in region 7 km NE Alimena (PA)

A magnitude ML 1.8 earthquake occured in region: 7 km NE Alimena (PA), on

  • 02-12-2019 11:31:06 (UTC)
  • 02-12-2019 12:31:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.73, 14.18 at 25 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
Alimena PA 7 2032 2032
Bompietro PA 7 1401 3433
Gangi PA 8 6811 10244
Blufi PA 9 1029 11273
Petralia Soprana PA 9 3360 14633
Petralia Sottana PA 11 2821 17454
Castellana Sicula PA 13 3411 20865
Resuttano CL 14 2038 22903
Geraci Siculo PA 15 1945 24848
Villarosa EN 16 4937 29785
Sperlinga EN 16 805 30590
Calascibetta EN 18 4528 35118
Polizzi Generosa PA 18 3407 38525
Santa Caterina Villarmosa CL 20 5388 43913
Nicosia EN 20 13899 57812

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NE of Caltanissetta (63360 inhabitants)
70 Km NE of Agrigento (59770 inhabitants)
70 Km SE of Bagheria (55387 inhabitants)
74 Km N of Gela (75827 inhabitants)
83 Km SE of Palermo (674435 inhabitants)
84 Km W of Catania (314555 inhabitants)
88 Km W of Acireale (52622 inhabitants)
93 Km NW 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
Rev 100 ML 1.8 2019-12-02
11:31:06
37.73 14.18 25 2019-12-02
11:40:35
Sala Sismica INGV-Roma 74247001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-02 11:31:06 ± 0.46
Latitude 37.73 ± 0.02
Longitude 14.18 ± 0.03
Depth (km) 25 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74247001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2119
Semi-minor axis of confidence ellipse (meter) 1340
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 68
Circular confidence region, given by single value of horizontal uncertainty (meter) 2120
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.11331
Epicentral distance of station farthest from the epicenter (degree) 0.44696
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 74247001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-02 11:40:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIB.HHE. 2019-12-02T11:31:19.02 0.6 undecidable manual S 336 0.2842 123 0.46 45
IV.PLLN.EHZ. 2019-12-02T11:31:18.60 0.6 undecidable manual S 354 0.2626 125 0.58 43
IV.CSLB.HHZ. 2019-12-02T11:31:17.25 0.3 undecidable manual S 336 0.2266 130 0.09 74
IV.GALF.HHE. 2019-12-02T11:31:16.00 3.0 undecidable manual P 0.3103 2.17 0
IV.CPTP.HHE. 2019-12-02T11:31:16.63 3.0 undecidable manual P 0.3238 2.6 0
IV.MSFR.HHZ. 2019-12-02T11:31:16.30 0.1 undecidable manual P 47 0.447 110 0.34 90
IV.RESU.HHZ. 2019-12-02T11:31:15.99 0.3 undecidable manual S 228 0.1259 148 0.8 62
IV.PETRA.HHZ. 2019-12-02T11:31:14.32 0.3 undecidable manual S 335 0.1133 150 -0.67 66
IV.PLLN.EHZ. 2019-12-02T11:31:13.05 0.1 undecidable manual P 354 0.2626 125 -0.1 98
IV.GIB.HHE. 2019-12-02T11:31:13.51 0.3 undecidable manual P 336 0.2842 123 0.05 74
IV.CSLB.HHZ. 2019-12-02T11:31:12.34 0.1 undecidable manual P 336 0.2266 130 -0.32 94
IV.RESU.HHZ. 2019-12-02T11:31:11.42 0.1 undecidable manual P 228 0.1259 148 -0.09 100
IV.PETRA.HHZ. 2019-12-02T11:31:10.94 0.1 positive manual P 335 0.1133 150 -0.46 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHE. ML:2.2 0.00089691975 0.544 AML other m 2019-12-02T11:31:14.72
IV.PETRA.HHN. ML:2.4 0.00133347 0.4224 AML other m 2019-12-02T11:31:15.04
IV.RESU.HHE. ML:2.1 0.00071585795 0.416 AML other m 2019-12-02T11:31:16.45
IV.RESU.HHN. ML:2.3 0.0011177555 0.4992 AML other m 2019-12-02T11:31:16.64
IV.CSLB.HHE. ML:1.4 0.00010668186 0.3776 AML other m 2019-12-02T11:31:18.76
IV.CSLB.HHN. ML:1.4 0.000112544585 0.3392 AML other m 2019-12-02T11:31:19.04
IV.PLLN.EHE. ML:1.8 0.00023173065 0.48 AML other m 2019-12-02T11:31:19.78
IV.PLLN.EHN. ML:1.9 0.0002972637 0.32 AML other m 2019-12-02T11:31:19.79
IV.MSFR.HHE. ML:1.4 5.9299925E-5 1.2608 AML other m 2019-12-02T11:31:26.46
IV.MSFR.HHN. ML:1.3 5.018052E-5 1.0176 AML other m 2019-12-02T11:31:32.74
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