Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 13-07-2021 and time 04:33:27 (Italy) in region 2 km E Gaggi (ME)

A magnitude ML 1.5 earthquake occured in region: 2 km E Gaggi (ME), on

  • 13-07-2021 02:33:27 (UTC)
  • 13-07-2021 04:33:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8550, 15.2420 at 14 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
Gaggi ME 2 3184 3184
Castelmola ME 3 1088 4272
Giardini-Naxos ME 4 9415 13687
Calatabiano CT 4 5308 18995
Taormina ME 4 10960 29955
Graniti ME 4 1492 31447
Mongiuffi Melia ME 6 600 32047
Letojanni ME 6 2861 34908
Gallodoro ME 7 367 35275
Fiumefreddo di Sicilia CT 7 9623 44898
Motta Camastra ME 8 845 45743
Piedimonte Etneo CT 8 3963 49706
Linguaglossa CT 9 5403 55109
Roccafiorita ME 9 197 55306
Limina ME 10 836 56142
Forza d'Agrò ME 11 911 57053
Francavilla di Sicilia ME 11 3945 60998
Castiglione di Sicilia CT 11 3215 64213
Mascali CT 11 14282 78495
Sant'Alessio Siculo ME 12 1554 80049
Antillo ME 14 919 80968
Casalvecchio Siculo ME 14 842 81810
Riposto CT 14 14838 96648
Savoca ME 14 1732 98380
Giarre CT 15 27659 126039
Sant'Alfio CT 15 1582 127621
Santa Teresa di Riva ME 15 9377 136998
Fondachelli-Fantina ME 16 1019 138017
Furci Siculo ME 17 3382 141399
Moio Alcantara ME 18 717 142116
Mandanici ME 18 601 142717
Malvagna ME 18 733 143450
Pagliara ME 18 1170 144620
Milo CT 18 1087 145707
Roccalumera ME 19 4141 149848

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km N of Acireale (52622 inhabitants)
41 Km NE of Catania (314555 inhabitants)
45 Km SW of Reggio di Calabria (183035 inhabitants)
47 Km SW of Messina (238439 inhabitants)
88 Km N of Siracusa (122291 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 1.5 2021-07-13
02:33:27		 37.8548 15.2422 14 2021-12-29
11:12:51		 Bollettino Sismico Italiano INGV 97341081
Reviewed
Rev200 		ML 1.2 2021-07-13
02:33:26		 37.853 15.219 15 2021-11-08
12:09:49		 Sala Operativa INGV_OE (Catania) 92693641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-13 02:33:27 ± 0.11
Latitude 37.8548 ± 0.0045
Longitude 15.2422 ± 0.0103
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97341081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 706
Semi-minor axis of confidence ellipse (meter) 587
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 101
Circular confidence region, given by single value of horizontal uncertainty (meter) 710.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 166
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.07015
Epicentral distance of station farthest from the epicenter (degree) 0.58456
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:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 97341081
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-08 12:09:37

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 92693641
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-07-13 02:46:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MPNC.HHZ. 2021-07-13T02:33:39.14 0.6 undecidable manual S 17 33.744 97 0.37 45
IV.HLNI.HHZ. 2021-07-13T02:33:38.43 0.3 undecidable manual P 210 64.8906 93 -0.26 66
IV.MSRU.HHZ. 2021-07-13T02:33:36.62 0.1 undecidable manual P 27 51.0156 94 0.07 93
IV.MILZ.HHZ. 2021-07-13T02:33:35.82 0.3 undecidable manual P 359 46.2204 94 0.01 71
IV.EPIT.HHZ. 2021-07-13T02:33:35.03 0.6 undecidable manual S 253 16.9719 113 0.64 43
IV.NOV.HHZ. 2021-07-13T02:33:35.50 0.6 undecidable manual S 334 21.2676 105 0.01 50
IV.MPNC.HHZ. 2021-07-13T02:33:33.85 0.1 undecidable manual P 17 33.744 97 -0.05 97
IV.ENIC.HHZ. 2021-07-13T02:33:33.83 0.6 undecidable manual P 218 31.4463 97 0.28 46
IV.AIO.HHZ. 2021-07-13T02:33:33.60 0.6 undecidable manual S 356 12.876 123 0.16 49
IV.EFIU.HHZ. 2021-07-13T02:33:32.75 0.6 undecidable manual S 201 7.7811 142 0.32 48
IV.EPOZ.HHZ. 2021-07-13T02:33:32.46 0.3 undecidable manual P 193 20.868 106 0.51 66
IV.ECTS.HHZ. 2021-07-13T02:33:32.69 0.6 undecidable manual S 286 10.9779 130 -0.35 47
IV.EMFO.HHE. 2021-07-13T02:33:31.58 0.3 undecidable manual P 225 18.7701 109 -0.06 74
IV.ECBD.HHN. 2021-07-13T02:33:31.21 0.1 undecidable manual P 239 15.9729 115 -0.03 100
IV.NOV.HHZ. 2021-07-13T02:33:31.85 0.3 undecidable manual P 334 21.2676 105 -0.16 72
IV.ESAL.HHZ. 2021-07-13T02:33:31.09 0.1 negative manual P 220 14.5743 119 0.04 100
IV.EVRN.HNN. 2021-07-13T02:33:31.71 0.3 undecidable manual P 207 20.6682 106 -0.2 72
IV.EPIT.HHZ. 2021-07-13T02:33:31.44 0.1 undecidable manual P 253 16.9719 113 0.06 99
IV.AIO.HHZ. 2021-07-13T02:33:30.77 0.1 negative manual P 356 12.876 123 -0.06 100
IV.ECTS.HHZ. 2021-07-13T02:33:30.24 0.1 negative manual P 286 10.9779 130 -0.36 94
IV.EFIU.HHZ. 2021-07-13T02:33:29.99 0.1 undecidable manual P 201 7.7811 142 -0.26 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESAL.HHE. ML:1.8 0.0005409999999999999 0.94 AML other m 2021-07-13T02:33:31.98
IV.ESAL.HHN. ML:1.7 0.000446 0.8 AML other m 2021-07-13T02:33:31.78
IV.ECTS.HHN. ML:1.3 0.0001945 1.18 AML other m 2021-07-13T02:33:32.16
IV.EFIU.HHN. ML:1.6 0.000483 1.68 AML other m 2021-07-13T02:33:33.06
IV.ECTS.HHE. ML:1.3 0.00018449999999999999 1.28 AML other m 2021-07-13T02:33:33.81
IV.EFIU.HHE. ML:1.6 0.00046350000000000004 1.48 AML other m 2021-07-13T02:33:33.21
IV.AIO.HHE. ML:1.5 0.00031 1.82 AML other m 2021-07-13T02:33:33.06
IV.AIO.HHN. ML:1.3 0.000192 0.44 AML other m 2021-07-13T02:33:34.38
IV.NOV.HHE. ML:1.8 0.00038950000000000003 0.24 AML other m 2021-07-13T02:33:36.79
IV.NOV.HHN. ML:1.6 0.00024249999999999999 0.9 AML other m 2021-07-13T02:33:37.71
IV.MPNC.HHE. ML:1.3 0.00007355 0.5 AML other m 2021-07-13T02:33:40.42
IV.MPNC.HHN. ML:1.4 0.00009545 0.34 AML other m 2021-07-13T02:33:42.08
IV.MSRU.HHE. ML:1.3 0.0000451 0.7 AML other m 2021-07-13T02:33:43.91
IV.MILZ.HHE. ML:1.7 0.00013800000000000002 1.08 AML other m 2021-07-13T02:33:44.64
IV.MILZ.HHN. ML:1.4 0.00006819999999999999 1.16 AML other m 2021-07-13T02:33:45.92
IV.MSRU.HHN. ML:1.2 0.00003965 0.62 AML other m 2021-07-13T02:33:47.57
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