Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.2 on date 12-08-2019 and time 11:30:22 (Italy) in region San Marco d'Alunzio (ME)

A magnitude ML 0.2 earthquake occured in region: San Marco d'Alunzio (ME), on

  • 12-08-2019 09:30:22 (UTC)
  • 12-08-2019 11:30:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.07, 14.7 at 7 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 Marco d'Alunzio ME 0 1996 1996
Torrenova ME 3 4386 6382
Militello Rosmarino ME 3 1324 7706
Capri Leone ME 4 4515 12221
Frazzanò ME 4 711 12932
Mirto ME 5 974 13906
Alcara li Fusi ME 6 1980 15886
Sant'Agata di Militello ME 6 12624 28510
Longi ME 7 1473 29983
San Salvatore di Fitalia ME 7 1319 31302
Galati Mamertino ME 8 2627 33929
Acquedolci ME 10 5744 39673
Naso ME 10 3813 43486
Castell'Umberto ME 10 3128 46614
Capo d'Orlando ME 11 13254 59868
San Fratello ME 11 3707 63575
Tortorici ME 12 6435 70010
Ficarra ME 12 1469 71479
Sinagra ME 14 2705 74184
Brolo ME 15 5783 79967
Ucria ME 16 1058 81025
Sant'Angelo di Brolo ME 17 3090 84115
Piraino ME 18 3962 88077
Raccuja ME 19 1041 89118

Municipalities with at least 50000 inhabitants

An earthquake occurred to
66 Km NW of Acireale (52622 inhabitants)
72 Km NW of Catania (314555 inhabitants)
76 Km W of Messina (238439 inhabitants)
83 Km W of Reggio di Calabria (183035 inhabitants)
85 Km NE of Caltanissetta (63360 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 0.2 2019-08-12
09:30:22		 38.07 14.7 7 2019-08-12
09:42:54		 Sala Sismica INGV-Roma 71411321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-12 09:30:22 ± 0.1
Latitude 38.07 ± 0.00
Longitude 14.70 ± 0.00
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71411321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 63
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 351
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 217
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.05
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.14209
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 3
Magnitude information

ML:0.2

Field Value
Value 0.2
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 71411321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-12 09:42:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.RRL.HHZ. 2019-08-12T09:30:41.67 3.0 undecidable manual Pg 18.85 0
IV.SCIAC.HHZ. 2019-08-12T09:30:37.68 3.0 undecidable manual Sn -4.02 0
AC.VLO.HHZ. 2019-08-12T09:30:37.12 3.0 undecidable manual Sn -2.19 0
MN.BLY.HHZ. 2019-08-12T09:30:33.22 3.0 undecidable manual Sg 2.81 0
GU.SATI.HHZ. 2019-08-12T09:30:33.82 3.0 undecidable manual Pg 12.3 0
IV.MNTV.HNZ. 2019-08-12T09:30:32.24 3.0 undecidable manual Sn -9.99 0
GU.BLANC.HHZ. 2019-08-12T09:30:28.34 3.0 undecidable manual Pn -0.03 0
IV.MNO.SHZ. 2019-08-12T09:30:28.44 0.6 undecidable manual S 181 0.1412 115 0.05 50
IV.MUCR.HHZ. 2019-08-12T09:30:28.43 0.6 undecidable manual S 102 0.1421 115 0 50
IV.MSFR.HHZ. 2019-08-12T09:30:26.70 0.6 undecidable manual S 245 0.0917 125 -0.04 50
IV.MNO.SHZ. 2019-08-12T09:30:25.83 0.1 undecidable manual P 181 0.1412 115 -0.04 100
IV.MUCR.HHZ. 2019-08-12T09:30:25.90 0.3 undecidable manual P 102 0.1421 115 0.01 75
IV.MSFR.HHZ. 2019-08-12T09:30:24.96 0.3 undecidable manual P 245 0.0917 125 0.05 76
IV.SPS2.HHZ. 2019-08-12T09:30:20.92 3.0 undecidable manual Sg 13.16 0
IV.SBPO.HNZ. 2019-08-12T09:30:01.13 3.0 negative manual Pg 8.26 0
IV.HPAC.HHZ. 2019-08-12T09:30:00.38 3.0 negative manual Pn -3.18 0
IV.PIEI.HHZ. 2019-08-12T09:29:57.63 3.0 undecidable manual Sg 3.37 0
IV.ALJA.HHZ. 2019-08-12T09:29:57.43 3.0 undecidable manual Pg 8.33 0
IV.NDIM.HNZ. 2019-08-12T09:29:57.93 3.0 negative manual Pg 6.71 0
IV.ATMI.HHZ. 2019-08-12T09:29:53.43 3.0 undecidable manual Sg 0.07 0
IV.GMB.BHZ. 2019-08-12T09:29:51.80 3.0 undecidable manual Pg 5.97 0
IV.RIBO.EHZ.01 2019-08-12T09:29:39.34 3.0 undecidable manual Pg 6.59 0
IV.ARVD.HHZ. 2019-08-12T09:29:18.79 3.0 undecidable manual Pn -5.33 0
IV.LAV9.HNZ. 2019-08-12T09:29:11.06 3.0 undecidable manual Pg -0.49 0
IX.MNT3.HHZ.02 2019-08-12T09:29:10.58 3.0 undecidable manual Pg 1.73 0
IV.VTIR.HHZ. 2019-08-12T09:29:07.12 3.0 negative manual P 0.09 0
IV.CERA.HHZ. 2019-08-12T09:28:57.92 3.0 positive manual P 0.28 0
IV.RNI2.HHZ. 2019-08-12T09:28:56.29 3.0 positive manual P -0.44 0
IV.MIDA.HHZ. 2019-08-12T09:28:56.74 3.0 negative manual P 0.41 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MSFR.HHN. ML:0 1.4583695E-5 0.1216 AML other m 2019-08-12T09:30:27.18
IV.MSFR.HHE. ML:-0.2 8.80659285E-6 0.096 AML other m 2019-08-12T09:30:26.98
IV.MUCR.HHN. ML:0.4 2.705255E-5 0.3008 AML other m 2019-08-12T09:30:29.14
IV.MUCR.HHE. ML:0.4 2.27779295E-5 0.1408 AML other m 2019-08-12T09:30:29.25
IV.MNO.SHN. ML:0 3.9944965E-5 0.2432 AML other m 2019-08-12T09:30:29.50
IV.MNO.SHE. ML:0 2.232485E-5 0.2368 AML other m 2019-08-12T09:30:28.51
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