ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.2 on date 20-03-2019 and time 11:04:31 (UTC) in region 3 km SW San Fratello (ME)

A magnitude ML 1.2 earthquake occured in region: 3 km SW San Fratello (ME), on

  • 20-03-2019 11:04:31 (UTC)
  • 20-03-2019 12:04:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.99, 14.57 at 8 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
San Fratello ME 3 3707 3707
Acquedolci ME 7 5744 9451
Sant'Agata di Militello ME 10 12624 22075
Militello Rosmarino ME 11 1324 23399
Alcara li Fusi ME 12 1980 25379
Caronia ME 12 3364 28743
San Marco d'Alunzio ME 14 1996 30739
Torrenova ME 14 4386 35125
Longi ME 16 1473 36598
Capri Leone ME 18 4515 41113
Frazzanò ME 18 711 41824
Capizzi ME 18 3176 45000
Galati Mamertino ME 18 2627 47627
Mirto ME 19 974 48601
Mistretta ME 20 4791 53392
Santo Stefano di Camastra ME 20 4694 58086
San Teodoro ME 20 1403 59489

Municipalities with at least 50000 inhabitants

An earthquake occurred to
67 Km NW of Acireale (52622 inhabitants)
71 Km NW of Catania (314555 inhabitants)
71 Km NE of Caltanissetta (63360 inhabitants)
89 Km W of Messina (238439 inhabitants)
93 Km E of Bagheria (55387 inhabitants)
95 Km W of Reggio di Calabria (183035 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 1.2 2019-03-20
11:04:31
37.99 14.57 9 2019-03-20
11:16:07
Sala Sismica INGV-Roma 66713651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-20 11:04:31 ± 0.12
Latitude 37.99 ± 0.00
Longitude 14.57 ± 0.00
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66713651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 369
Semi-minor axis of confidence ellipse (meter) 222
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 107
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 201
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0.04227
Epicentral distance of station farthest from the epicenter (degree) 0.28329
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
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 66713651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-20 11:16:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GALF.HHZ. 2019-03-20T11:04:42.48 1.0 undecidable manual S 181 0.2833 105 -0.05 32
IV.MUCR.HHZ. 2019-03-20T11:04:41.12 0.3 undecidable manual S 78 0.2428 107 0.09 97
IV.GALF.HHZ. 2019-03-20T11:04:37.86 0.3 undecidable manual P 181 0.2833 105 0.11 95
IV.MNO.SHZ. 2019-03-20T11:04:36.53 0.3 undecidable manual S 123 0.116 123 -0.05 100
IV.MUCR.HHZ. 2019-03-20T11:04:36.82 0.3 undecidable manual P 78 0.2428 107 -0.06 97
IV.MNO.SHZ. 2019-03-20T11:04:34.27 0.3 undecidable manual P 123 0.116 123 -0.04 100
IV.MSFR.HHZ. 2019-03-20T11:04:34.70 0.6 undecidable manual S 22 0.0423 151 0.11 67
IV.MSFR.HHZ. 2019-03-20T11:04:33.06 0.3 undecidable manual P 22 0.0423 151 -0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MSFR.HHE. ML:0 0.0001465423 1.0816 AML other m 2019-03-20T11:04:34.83
IV.MSFR.HHN. ML:0 0.000152902205 0.9792 AML other m 2019-03-20T11:04:34.59
IV.MNO.SHE. ML:0 0.00015437235 0.4864 AML other m 2019-03-20T11:04:36.96
IV.MNO.SHN. ML:0 0.0001304852 0.16 AML other m 2019-03-20T11:04:37.46
IV.MUCR.HHE. ML:1 5.4843865E-5 0.5568 AML other m 2019-03-20T11:04:41.62
IV.MUCR.HHN. ML:1.3 0.0001068174 0.224 AML other m 2019-03-20T11:04:41.58
IV.GALF.HNE. ML:1.3 9.382577E-5 2.1632 AML other m 2019-03-20T11:04:43.11
IV.GALF.HNN. ML:1 5.0776965E-5 0.4416 AML other m 2019-03-20T11:04:42.28
IV.GALF.HHE. ML:1.3 8.515941E-5 2.1376 AML other m 2019-03-20T11:04:43.06
IV.GALF.HHN. ML:1.3 0.00010101156 1.4336 AML other m 2019-03-20T11:04:42.13
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