Earthquake with magnitude of ML 1.9 on date 16-07-2021 and time 21:48:56 (Italy) in region Costa Catanese (Catania)

A magnitude ML 1.9 earthquake occured in region: Costa Catanese (Catania), on

  • 16-07-2021 19:48:56 (UTC)
  • 16-07-2021 21:48:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.486, 15.109 at 10 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
Catania CT 3 314555 314555
Aci Castello CT 9 18723 333278
Sant'Agata li Battiati CT 9 9479 342757
San Gregorio di Catania CT 9 11966 354723
Gravina di Catania CT 9 25838 380561
Misterbianco CT 10 49410 429971
San Giovanni la Punta CT 10 23060 453031
Valverde CT 11 7840 460871
Tremestieri Etneo CT 11 20589 481460
Mascalucia CT 11 31958 513418
San Pietro Clarenza CT 12 7743 521161
Motta Sant'Anastasia CT 13 12116 533277
Aci Bonaccorsi CT 13 3524 536801
Camporotondo Etneo CT 13 5023 541824
Aci Catena CT 14 29851 571675
Aci Sant'Antonio CT 14 17984 589659
Viagrande CT 14 8563 598222
Trecastagni CT 15 10910 609132
Acireale CT 15 52622 661754
Pedara CT 15 14102 675856
Nicolosi CT 16 7463 683319
Belpasso CT 17 28108 711427

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km SE of Catania (314555 inhabitants)
15 Km SW of Acireale (52622 inhabitants)
50 Km NW of Siracusa (122291 inhabitants)
71 Km NE of Ragusa (73313 inhabitants)
76 Km NE of Modica (54633 inhabitants)
78 Km NE of Vittoria (63339 inhabitants)
84 Km SW of Reggio di Calabria (183035 inhabitants)
88 Km SW of Messina (238439 inhabitants)
89 Km NE of Gela (75827 inhabitants)
92 Km E of Caltanissetta (63360 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.9 2021-07-16
19:48:56
37.4857 15.1088 10 2021-07-16
20:08:33
Sala Sismica INGV-Roma 92843241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-16 19:48:56 ± 0.16
Latitude 37.4857 ± 0.0063
Longitude 15.1088 ± 0.0125
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 92843241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1102
Semi-minor axis of confidence ellipse (meter) 422
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 254
Circular confidence region, given by single value of horizontal uncertainty (meter) 1100
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.96857
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 92843241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-16 20:08:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CLTA.HHZ. 2021-07-16T19:49:15.76 0.1 undecidable manual P 251 0.9686 50 0.97 63
IV.HAVL.HHZ. 2021-07-16T19:49:14.88 0.1 undecidable manual S 179 0.5261 50 -0.11 92
IV.MSRU.HHZ. 2021-07-16T19:49:13.51 3.0 undecidable manual P 0
IV.GALF.HHZ. 2021-07-16T19:49:11.40 3.0 undecidable manual S -2.96 0
IV.HPAC.HHE. 2021-07-16T19:49:11.41 0.1 undecidable manual P 184 0.7788 50 -0.14 87
IV.RAFF.HHE. 2021-07-16T19:49:09.56 0.1 undecidable manual P 246 0.6484 50 0.24 87
IV.HVIT.HHE. 2021-07-16T19:49:09.61 0.1 undecidable manual P 224 0.679 50 -0.23 87
IV.SSY.HHZ. 2021-07-16T19:49:09.23 0.3 undecidable manual S 185 0.3292 50 0.07 73
IV.EMSG.HHZ. 2021-07-16T19:49:09.93 3.0 undecidable manual S -0.87 0
IV.EFIU.HHZ. 2021-07-16T19:49:08.68 3.0 undecidable manual P 0
IV.EVRN.HHZ. 2021-07-16T19:49:07.75 3.0 undecidable manual S 0
IV.HMDC.HHZ. 2021-07-16T19:49:07.90 0.1 undecidable manual P 206 0.5864 50 -0.36 86
IV.HAVL.HHZ. 2021-07-16T19:49:06.75 0.3 undecidable manual P 179 0.5261 50 -0.47 64
IV.ENIC.HHZ. 2021-07-16T19:49:06.94 3.0 undecidable manual S 0
IV.HLNI.HHZ. 2021-07-16T19:49:06.16 0.3 undecidable manual S 234 0.2329 110 0.02 75
IV.HCRL.HHZ. 2021-07-16T19:49:05.95 0.3 undecidable manual S 197 0.2113 112 0.58 66
IV.ESML.HHZ. 2021-07-16T19:49:05.15 0.1 undecidable manual S 306 0.2248 111 -0.71 83
IV.HVZN.HHZ. 2021-07-16T19:49:05.63 0.3 undecidable manual P 226 0.438 50 -0.09 71
IV.HAGA.HHZ. 2021-07-16T19:49:05.03 0.3 undecidable manual S 170 0.2041 113 -0.07 74
IV.SSY.HHZ. 2021-07-16T19:49:04.10 0.3 undecidable manual P 185 0.3292 50 0.25 70
IV.EPOZ.HHE. 2021-07-16T19:49:04.12 3.0 undecidable manual S 19 0.1961 113 -0.72 0
IV.ENIC.HHZ. 2021-07-16T19:49:03.64 3.0 undecidable manual P 0
IV.EVRN.HHZ. 2021-07-16T19:49:02.34 3.0 undecidable manual P 0
IV.ESML.HHZ. 2021-07-16T19:49:02.50 0.3 undecidable manual P 306 0.2248 111 0.56 66
IV.HLNI.HHZ. 2021-07-16T19:49:01.99 0.1 undecidable manual P 234 0.2329 110 -0.11 98
IV.EPOZ.HHE. 2021-07-16T19:49:01.61 0.1 undecidable manual P 19 0.1961 113 0.25 96
IV.HCRL.HHZ. 2021-07-16T19:49:01.68 0.1 undecidable manual P 197 0.2113 112 0.02 100
IV.HAGA.HHZ. 2021-07-16T19:49:01.22 0.1 undecidable manual P 170 0.2041 113 -0.29 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HAGA.HHN. ML:1.6 0.000254 0.34 AML other m 2021-07-16T19:49:05.25
IV.HAGA.HHE. ML:1.5 0.0002145 0.24 AML other m 2021-07-16T19:49:05.55
IV.HCRL.HHN. ML:2.2 0.000971 1.76 AML other m 2021-07-16T19:49:05.11
IV.HCRL.HHE. ML:2.2 0.000913 0.82 AML other m 2021-07-16T19:49:06.12
IV.HLNI.HHN. ML:2 0.0005645 0.24 AML other m 2021-07-16T19:49:06.70
IV.EVRN.HHN. ML:1.9 0.0005135 0.2 AML other m 2021-07-16T19:49:07.65
IV.EVRN.HNE. ML:2 0.0006305 0.3 AML other m 2021-07-16T19:49:07.66
IV.EVRN.HHE. ML:2 0.000647 0.28 AML other m 2021-07-16T19:49:07.69
IV.ESML.HHE. ML:1.5 0.000187 0.88 AML other m 2021-07-16T19:49:07.82
IV.EVRN.HNN. ML:1.9 0.0004855 0.58 AML other m 2021-07-16T19:49:07.56
IV.HLNI.HHE. ML:1.9 0.0005305 0.3 AML other m 2021-07-16T19:49:08.31
IV.ESML.HHN. ML:1.3 0.0001193 0.14 AML other m 2021-07-16T19:49:09.14
IV.SSY.HHE. ML:2.1 0.000469 0.94 AML other m 2021-07-16T19:49:09.71
IV.SSY.HHN. ML:2.4 0.0009845 0.78 AML other m 2021-07-16T19:49:11.27
IV.ENIC.HHE. ML:1.7 0.0004015 0.22 AML other m 2021-07-16T19:49:12.34
IV.ENIC.HHN. ML:1.8 0.0004835 0.22 AML other m 2021-07-16T19:49:12.44
IV.HAVL.HHE. ML:2.1 0.0002585 0.7 AML other m 2021-07-16T19:49:15.12
IV.HVZN.HHE. ML:2 0.000255 0.38 AML other m 2021-07-16T19:49:15.80
IV.HVZN.HHN. ML:2 0.000241 0.46 AML other m 2021-07-16T19:49:17.70
IV.HAVL.HHN. ML:2.1 0.000247 0.76 AML other m 2021-07-16T19:49:18.92
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