Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 18-08-2020 and time 13:36:54 (Italy) in region 2 km W Montagnareale (ME)

A magnitude ML 1.8 earthquake occured in region: 2 km W Montagnareale (ME), on

  • 18-08-2020 11:36:54 (UTC)
  • 18-08-2020 13:36:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.1370, 14.9260 at 16 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Montagnareale ME 2 1615 1615
Patti ME 3 13431 15046
Sant'Angelo di Brolo ME 5 3090 18136
Gioiosa Marea ME 5 7074 25210
Librizzi ME 5 1660 26870
Piraino ME 6 3962 30832
Sinagra ME 9 2705 33537
Brolo ME 9 5783 39320
Ficarra ME 9 1469 40789
Raccuja ME 9 1041 41830
San Piero Patti ME 10 2915 44745
Ucria ME 11 1058 45803
Castell'Umberto ME 12 3128 48931
Oliveri ME 12 2181 51112
Naso ME 12 3813 54925
Falcone ME 14 2808 57733
Basicò ME 15 612 58345
Tortorici ME 15 6435 64780
Montalbano Elicona ME 15 2287 67067
San Salvatore di Fitalia ME 15 1319 68386
Mirto ME 16 974 69360
Capo d'Orlando ME 16 13254 82614
Floresta ME 17 485 83099
Frazzanò ME 17 711 83810
Galati Mamertino ME 18 2627 86437
Furnari ME 18 3784 90221
Tripi ME 18 873 91094
Mazzarrà Sant'Andrea ME 19 1531 92625
Capri Leone ME 19 4515 97140
Longi ME 19 1473 98613

Municipalities with at least 50000 inhabitants

An earthquake occurred to
56 Km W of Messina (238439 inhabitants)
62 Km NW of Acireale (52622 inhabitants)
63 Km W of Reggio di Calabria (183035 inhabitants)
72 Km N of Catania (314555 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 		ML 1.8 2020-08-18
11:36:54		 38.1368 14.9262 16 2020-11-19
12:37:02		 Bollettino Sismico Italiano INGV 83126421
Reviewed
Rev100 		ML 1.7 2020-08-18
11:36:54		 38.1377 14.9272 14 2020-08-18
11:42:58		 Sala Sismica INGV-Roma 82112171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-18 11:36:54 ± 0.08
Latitude 38.1368 ± 0.0036
Longitude 14.9262 ± 0.0057
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83126421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 457
Semi-minor axis of confidence ellipse (meter) 178
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.10252
Epicentral distance of station farthest from the epicenter (degree) 0.88943
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 83126421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-22 09:15:06

ML:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations 14
Type of magnitude ML
Reference to an origin 82112171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-18 11:42:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSLB.HHZ. 2020-08-18T11:37:18.26 0.6 undecidable manual S 254 79.0653 94 0.47 40
IV.SOI.EHZ. 2020-08-18T11:37:10.78 0.6 undecidable manual P 94 98.7234 93 -0.07 42
IV.CSLB.HHZ. 2020-08-18T11:37:07.51 0.1 undecidable manual P 254 79.0653 94 -0.31 83
IV.MPNC.HHZ. 2020-08-18T11:37:06.68 0.6 undecidable manual S 88 37.2294 100 -0.03 47
IV.AIO.HHZ. 2020-08-18T11:37:05.06 0.6 undecidable manual S 124 32.5452 103 -0.41 44
IV.ECTS.HHN. 2020-08-18T11:37:05.72 0.3 undecidable manual S 149 33.0447 102 0.12 71
IV.IACL.HHE. 2020-08-18T11:37:05.40 1.0 undecidable manual P 312 66.378 95 -0.48 21
IV.IVUG.HHZ. 2020-08-18T11:37:04.56 0.3 undecidable manual S 10 29.2485 105 -0.06 72
IV.MSFR.HHZ. 2020-08-18T11:37:04.79 0.6 undecidable manual S 249 31.3464 103 -0.38 45
IV.IFIL.HHN. 2020-08-18T11:37:04.46 0.3 undecidable manual P 327 56.3991 96 0.11 68
IV.IVPL.HHZ. 2020-08-18T11:37:04.29 0.3 undecidable manual S 10 26.9508 107 0.24 70
IV.IVGP.HHZ. 2020-08-18T11:37:04.60 0.3 undecidable manual S 6 29.0487 105 0.04 73
IV.NOV.HHZ. 2020-08-18T11:37:02.54 0.6 undecidable manual S 123 21.9669 113 -0.25 47
IV.ECTS.HHN. 2020-08-18T11:37:01.04 0.1 undecidable manual P 149 33.0447 102 0.25 92
IV.EMSG.HHZ. 2020-08-18T11:37:01.62 0.1 undecidable manual P 177 35.1426 101 0.52 86
IV.MPNC.HHZ. 2020-08-18T11:37:01.34 0.1 positive manual P 88 37.2294 100 -0.09 94
IV.EPZF.HHZ. 2020-08-18T11:37:01.51 1.0 negative manual P 190 35.2425 101 0.39 22
IV.MUCR.HHZ. 2020-08-18T11:37:00.50 0.6 undecidable manual S 204 11.3775 136 0.08 49
IV.IVGP.HHZ. 2020-08-18T11:37:00.12 0.1 undecidable manual P 6 29.0487 105 -0.06 96
IV.IVUG.HHZ. 2020-08-18T11:37:00.18 0.1 undecidable manual P 10 29.2485 105 -0.04 97
IV.MSFR.HHZ. 2020-08-18T11:37:00.30 0.1 positive manual P 249 31.3464 103 -0.24 93
IV.IVPL.HHZ. 2020-08-18T11:37:00.10 0.1 positive manual P 10 26.9508 107 0.22 94
IV.AIO.HHZ. 2020-08-18T11:37:00.57 0.1 undecidable manual P 124 32.5452 103 -0.14 94
IV.NOV.HHZ. 2020-08-18T11:36:59.05 0.1 positive manual P 123 21.9669 113 -0.11 96
IV.MUCR.HHZ. 2020-08-18T11:36:57.73 0.1 positive manual P 204 11.3775 136 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AIO.HHE. ML:1.5 0.0001295 0.7 AML other m 2020-08-18T11:37:08.67
IV.MUCR.HHE. ML:1.9 0.000722 0.18 AML other m 2020-08-18T11:37:00.54
IV.NOV.HHE. ML:1.9 0.0015400000000000001 0.22 AML other m 2020-08-18T11:37:03.55
IV.NOV.HHN. ML:2.1 0.001105 0.22 AML other m 2020-08-18T11:37:03.88
IV.AIO.HHN. ML:1.7 0.0001875 0.42 AML other m 2020-08-18T11:37:05.43
IV.IVPL.HHE. ML:1.8 0.0003165 0.18 AML other m 2020-08-18T11:37:06.52
IV.IVPL.HHN. ML:1.8 0.0004485 0.16 AML other m 2020-08-18T11:37:06.62
IV.MPNC.HHN. ML:1.8 0.0002515 0.54 AML other m 2020-08-18T11:37:08.37
IV.MPNC.HHE. ML:1.7 0.0001875 0.42 AML other m 2020-08-18T11:37:08.37
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