Earthquake with magnitude of ML 1.8 on date 20-09-2019 and time 03:41:32 (UTC) in region 2 km N Zafferana Etnea (CT)

A magnitude ML 1.8 earthquake occured in region: 2 km N Zafferana Etnea (CT), on

  • 20-09-2019 03:41:32 (UTC)
  • 20-09-2019 05:41:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.71, 15.11 at 2 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
Zafferana Etnea CT 2 9517 9517
Milo CT 2 1087 10604
Santa Venerina CT 4 8592 19196
Sant'Alfio CT 5 1582 20778
Giarre CT 7 27659 48437
Riposto CT 9 14838 63275
Mascali CT 10 14282 77557
Trecastagni CT 10 10910 88467
Pedara CT 11 14102 102569
Viagrande CT 11 8563 111132
Aci Sant'Antonio CT 12 17984 129116
Acireale CT 12 52622 181738
Aci Catena CT 12 29851 211589
Aci Bonaccorsi CT 12 3524 215113
Nicolosi CT 13 7463 222576
Piedimonte Etneo CT 13 3963 226539
Fiumefreddo di Sicilia CT 13 9623 236162
Valverde CT 15 7840 244002
San Giovanni la Punta CT 15 23060 267062
Tremestieri Etneo CT 15 20589 287651
Linguaglossa CT 15 5403 293054
Mascalucia CT 16 31958 325012
San Gregorio di Catania CT 16 11966 336978
Calatabiano CT 17 5308 342286
San Pietro Clarenza CT 17 7743 350029
Sant'Agata li Battiati CT 17 9479 359508
Gravina di Catania CT 17 25838 385346
Ragalna CT 17 3924 389270
Belpasso CT 17 28108 417378
Aci Castello CT 17 18723 436101
Camporotondo Etneo CT 18 5023 441124
Castiglione di Sicilia CT 19 3215 444339
Gaggi ME 20 3184 447523

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km NW of Acireale (52622 inhabitants)
23 Km N of Catania (314555 inhabitants)
65 Km SW of Reggio di Calabria (183035 inhabitants)
67 Km SW of Messina (238439 inhabitants)
74 Km N of Siracusa (122291 inhabitants)
93 Km NE of Ragusa (73313 inhabitants)
95 Km E of Caltanissetta (63360 inhabitants)
98 Km NE of Vittoria (63339 inhabitants)
99 Km N of Modica (54633 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 2019-09-20
03:41:32
37.71 15.11 2 2019-09-20
04:10:24
Sala Sismica INGV-Roma 72576611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-20 03:41:32 ± 0.17
Latitude 37.71 ± 0.01
Longitude 15.11 ± 0.01
Depth (km) 2 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72576611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1040
Semi-minor axis of confidence ellipse (meter) 690
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 226
Circular confidence region, given by single value of horizontal uncertainty (meter) 1040
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 152
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.22753
Number of stations at which the event was observed 9
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 18
Type of magnitude ML
Reference to an origin 72576611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-20 04:10:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GALF.HHZ. 2019-09-20T03:41:43.07 3.0 positive manual P 0.33 0
IV.EPZF.HHZ. 2019-09-20T03:41:41.90 0.3 undecidable manual S 300 0.2275 93 0.28 70
IV.AIO.HHZ. 2019-09-20T03:41:40.75 3.0 positive manual P 0.86 0
IV.NOV.HHZ. 2019-09-20T03:41:40.67 3.0 positive manual P 0.1 0
IV.EMSG.HHZ. 2019-09-20T03:41:38.90 0.3 undecidable manual S 312 0.1664 95 -0.36 69
IV.EPZF.HHZ. 2019-09-20T03:41:37.17 1.0 negative manual P 300 0.2275 93 -0.74 20
IV.ESLN.HHZ. 2019-09-20T03:41:37.00 0.6 undecidable manual S 261 0.1052 97 0.07 50
IV.EPIT.HHE. 2019-09-20T03:41:37.50 0.6 undecidable manual S 339 0.1088 97 0.43 46
IV.EMCN.HNZ. 2019-09-20T03:41:36.20 0.6 undecidable manual S 325 0.0998 98 -0.52 45
IV.EMSG.HHZ. 2019-09-20T03:41:36.03 1.0 undecidable manual P 312 0.1664 95 -0.52 22
IV.EPIT.HHE. 2019-09-20T03:41:35.69 0.1 undecidable manual P 339 0.1088 97 0.41 92
IV.ESLN.HHZ. 2019-09-20T03:41:35.37 0.1 positive manual P 261 0.1052 97 0.17 97
IV.EMCN.HNZ. 2019-09-20T03:41:34.97 0.1 positive manual P 325 0.0998 98 -0.11 99
IV.EVRN.HNE. 2019-09-20T03:41:33.49 0.1 undecidable manual P 131 0.0306 114 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMCN.HNE. ML:2.6 0.007418611 0.1088 AML other m 2019-09-20T03:41:37.45
IV.EMCN.HNN. ML:2.6 0.006947301 0.16 AML other m 2019-09-20T03:41:37.88
IV.ESLN.HHE. ML:2 0.001489859 0.3408 AML other m 2019-09-20T03:41:40.62
IV.ESLN.HHN. ML:1.7 0.00080108745 0.48 AML other m 2019-09-20T03:41:41.19
IV.EMSG.HHE. ML:2.5 0.0030785415 0.2 AML other m 2019-09-20T03:41:41.24
IV.EMSG.HHN. ML:2.6 0.003762138 0.2992 AML other m 2019-09-20T03:41:42.06
IV.EPZF.HHE. ML:2 0.00064223975 0.3408 AML other m 2019-09-20T03:41:45.40
IV.EPZF.HHN. ML:2.1 0.0008947866 0.4 AML other m 2019-09-20T03:41:45.92
IV.ECTS.EHE. ML:1.4 0.0002163754 0.1984 AML other m 2019-09-20T03:41:41.71
IV.ECTS.EHN. ML:1.5 0.00028614885 0.28 AML other m 2019-09-20T03:41:42.14
IV.NOV.HHE. ML:1.8 0.0002673874 0.32 AML other m 2019-09-20T03:41:51.17
IV.NOV.HHN. ML:1.7 0.0001903354 0.4208 AML other m 2019-09-20T03:41:50.29
IV.AIO.HHE. ML:1.1 6.1446895E-5 0.4992 AML other m 2019-09-20T03:41:47.29
IV.AIO.HHN. ML:1.2 7.718697E-5 0.2 AML other m 2019-09-20T03:41:41.85
IV.GALF.HNE. ML:1.6 0.000103372655 0.7888 AML other m 2019-09-20T03:41:55.93
IV.GALF.HNN. ML:1.6 0.000127020555 0.5392 AML other m 2019-09-20T03:41:49.27
IV.GALF.HHE. ML:1.8 0.00018546935 0.9792 AML other m 2019-09-20T03:42:03.40
IV.GALF.HHN. ML:1.7 0.0001552588 0.4016 AML other m 2019-09-20T03:41:43.97
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