Earthquake with magnitude of ML 1.1 on date 20-08-2019 and time 20:18:18 (UTC) in region 7 km SW Floresta (ME)

A magnitude ML 1.1 earthquake occured in region: 7 km SW Floresta (ME), on

  • 20-08-2019 20:18:18 (UTC)
  • 20-08-2019 22:18:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.95, 14.84 at 34 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
Floresta ME 7 485 485
Tortorici ME 9 6435 6920
Maniace CT 10 3765 10685
Santa Domenica Vittoria ME 11 980 11665
Galati Mamertino ME 11 2627 14292
Ucria ME 11 1058 15350
Longi ME 12 1473 16823
Randazzo CT 12 10900 27723
Raccuja ME 13 1041 28764
Maletto CT 13 3920 32684
Alcara li Fusi ME 15 1980 34664
San Salvatore di Fitalia ME 15 1319 35983
Roccella Valdemone ME 15 666 36649
Sinagra ME 15 2705 39354
Castell'Umberto ME 15 3128 42482
San Piero Patti ME 16 2915 45397
Frazzanò ME 16 711 46108
Cesarò ME 16 2439 48547
San Teodoro ME 17 1403 49950
Mirto ME 17 974 50924
Montalbano Elicona ME 17 2287 53211
Bronte CT 18 19172 72383
Ficarra ME 18 1469 73852
Militello Rosmarino ME 18 1324 75176
San Marco d'Alunzio ME 19 1996 77172
Sant'Angelo di Brolo ME 19 3090 80262
Malvagna ME 19 733 80995
Moio Alcantara ME 19 717 81712
Librizzi ME 19 1660 83372
Naso ME 20 3813 87185

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km NW of Acireale (52622 inhabitants)
54 Km NW of Catania (314555 inhabitants)
68 Km W of Messina (238439 inhabitants)
73 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
Rev 100 ML 1.1 2019-08-20
20:18:18
37.95 14.84 34 2019-08-20
20:41:01
Sala Sismica INGV-Roma 71663211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-20 20:18:18 ± 0.23
Latitude 37.95 ± 0.01
Longitude 14.84 ± 0.01
Depth (km) 34 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71663211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1017
Semi-minor axis of confidence ellipse (meter) 750
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 227
Circular confidence region, given by single value of horizontal uncertainty (meter) 1020
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 131
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.09713
Epicentral distance of station farthest from the epicenter (degree) 0.21404
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 71663211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-20 20:41:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MSFR.HHZ. 2019-08-20T20:18:31.14 0.1 undecidable manual S 293 0.214 142 0.01 98
IV.EPZF.HHZ. 2019-08-20T20:18:30.02 0.1 undecidable manual S 175 0.1259 156 0.24 95
IV.MUCR.HHZ. 2019-08-20T20:18:29.43 0.1 undecidable manual S 15 0.0971 161 -0.03 100
IV.MNO.SHZ. 2019-08-20T20:18:29.49 0.1 undecidable manual S 261 0.1169 157 -0.19 97
IV.MSFR.HHZ. 2019-08-20T20:18:26.22 0.1 positive manual P 293 0.214 142 0.23 94
IV.EPZF.HHZ. 2019-08-20T20:18:25.02 0.1 undecidable manual P 175 0.1259 156 -0.19 96
IV.MNO.SHZ. 2019-08-20T20:18:25.08 0.1 positive manual P 261 0.1169 157 -0.07 99
IV.EMSG.HHZ. 2019-08-20T20:18:25.42 0.1 undecidable manual P 146 0.1547 151 -0.01 100
IV.MUCR.HHZ. 2019-08-20T20:18:25.08 0.1 undecidable manual P 15 0.0971 161 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPZF.HHN. ML:1.8 0.0002255 1.06 AML other m 2019-08-20T20:18:30.70
IV.EPZF.HHE. ML:1.8 0.0002565 0.32 AML other m 2019-08-20T20:18:30.34
IV.MNO.SHE. ML:0 0.0001143 0.32 AML other m 2019-08-20T20:18:30.64
IV.MNO.SHN. ML:0 0.000184 0.48 AML other m 2019-08-20T20:18:30.96
IV.MUCR.HHE. ML:0.9 2.7827235E-5 0.6272 AML other m 2019-08-20T20:18:29.43
IV.MUCR.HHN. ML:1.2 6.328986E-5 0.32 AML other m 2019-08-20T20:18:30.32
IV.MSFR.HHE. ML:0.9 2.4677115E-5 0.6912 AML other m 2019-08-20T20:18:31.21
IV.MSFR.HHN. ML:0.8 2.2308585E-5 1.1008 AML other m 2019-08-20T20:18:31.40
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