Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 21-07-2021 and time 01:09:53 (UTC) in region 5 km NW Graniti (ME)

A magnitude ML 1.2 earthquake occured in region: 5 km NW Graniti (ME), on

  • 21-07-2021 01:09:53 (UTC)
  • 21-07-2021 03:09:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9370, 15.2070 at 19 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
Graniti ME 5 1492 1492
Motta Camastra ME 5 845 2337
Roccafiorita ME 6 197 2534
Antillo ME 6 919 3453
Limina ME 6 836 4289
Fondachelli-Fantina ME 6 1019 5308
Mongiuffi Melia ME 7 600 5908
Francavilla di Sicilia ME 7 3945 9853
Gaggi ME 8 3184 13037
Gallodoro ME 9 367 13404
Castiglione di Sicilia CT 9 3215 16619
Castelmola ME 11 1088 17707
Casalvecchio Siculo ME 11 842 18549
Letojanni ME 11 2861 21410
Novara di Sicilia ME 11 1337 22747
Taormina ME 12 10960 33707
Forza d'Agrò ME 12 911 34618
Savoca ME 12 1732 36350
Linguaglossa CT 12 5403 41753
Mandanici ME 12 601 42354
Giardini-Naxos ME 12 9415 51769
Sant'Alessio Siculo ME 12 1554 53323
Calatabiano CT 13 5308 58631
Malvagna ME 14 733 59364
Santa Teresa di Riva ME 14 9377 68741
Moio Alcantara ME 14 717 69458
Piedimonte Etneo CT 14 3963 73421
Pagliara ME 15 1170 74591
Furci Siculo ME 16 3382 77973
Tripi ME 16 873 78846
Fiumefreddo di Sicilia CT 16 9623 88469
Roccalumera ME 17 4141 92610
Roccella Valdemone ME 17 666 93276
Castroreale ME 18 2504 95780
Mazzarrà Sant'Andrea ME 18 1531 97311
Fiumedinisi ME 18 1409 98720
Nizza di Sicilia ME 19 3667 102387
Basicò ME 19 612 102999
Montalbano Elicona ME 20 2287 105286
Rodì Milici ME 20 2056 107342
Mascali CT 20 14282 121624

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km N of Acireale (52622 inhabitants)
42 Km SW of Messina (238439 inhabitants)
43 Km W of Reggio di Calabria (183035 inhabitants)
49 Km N of Catania (314555 inhabitants)
98 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 1.2 2021-07-21
01:09:53		 37.9367 15.2073 19 2021-12-29
11:12:17		 Bollettino Sismico Italiano INGV 93621541
Reviewed
Rev100 		ML 1.2 2021-07-21
01:09:53		 37.9268 15.2103 18 2021-07-21
01:19:35		 Sala Sismica INGV-Roma 93003801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-21 01:09:53 ± 0.25
Latitude 37.9367 ± 0.0099
Longitude 15.2073 ± 0.0137
Depth (km) 19 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 93621541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1189
Semi-minor axis of confidence ellipse (meter) 550
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 303
Circular confidence region, given by single value of horizontal uncertainty (meter) 1190.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.04047
Epicentral distance of station farthest from the epicenter (degree) 0.40380
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 93621541
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-08-03 15:29:08

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 93003801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-21 01:19:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSRU.HHE. 2021-07-21T01:10:09.03 0.3 undecidable manual S 36 44.8218 104 0.48 65
IV.MUCR.HHZ. 2021-07-21T01:10:05.16 0.3 undecidable manual S 292 31.4463 112 0.01 72
IV.MSRU.HHE. 2021-07-21T01:10:02.52 0.6 undecidable manual P 36 44.8218 104 0.17 46
IV.EPIT.HHZ. 2021-07-21T01:10:02.02 0.1 undecidable manual S 224 19.1697 127 -0.26 95
IV.NOV.HHZ. 2021-07-21T01:10:01.02 0.3 undecidable manual S 329 11.877 143 0.11 74
IV.MUCR.HHZ. 2021-07-21T01:10:00.42 0.1 undecidable manual P 292 31.4463 112 0.04 97
IV.MILZ.HHN. 2021-07-21T01:10:00.72 0.1 undecidable manual P 3 37.2294 108 -0.49 86
IV.EPIT.HHZ. 2021-07-21T01:09:59.14 0.1 undecidable manual P 224 19.1697 127 0.41 91
IV.EMNR.HHZ. 2021-07-21T01:09:59.47 0.1 undecidable manual P 230 20.6682 125 0.55 87
IV.AIO.HHZ. 2021-07-21T01:09:59.99 0.3 undecidable manual S 30 4.4955 165 -0.04 76
IV.NOV.HHZ. 2021-07-21T01:09:57.88 0.1 undecidable manual P 329 11.877 143 -0.05 100
IV.AIO.HHZ. 2021-07-21T01:09:57.31 0.1 positive manual P 30 4.4955 165 -0.12 100
IV.EFIU.HHE. 2021-07-21T01:09:57.99 0.3 undecidable manual P 179 16.2726 133 -0.4 69
IV.ECTS.HHE. 2021-07-21T01:09:57.51 0.1 undecidable manual P 231 9.6792 149 -0.23 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AIO.HHE. ML:1.2 0.000132 0.16 AML other m 2021-07-21T01:10:00.16
IV.AIO.HHN. ML:1.0 0.00008085 0.76 AML other m 2021-07-21T01:10:00.27
IV.NOV.HHE. ML:1.6 0.000295 0.34 AML other m 2021-07-21T01:10:01.25
IV.NOV.HHN. ML:1.6 0.0002775 0.52 AML other m 2021-07-21T01:10:01.60
IV.MUCR.HHE. ML:1.0 0.00004495 1.38 AML other m 2021-07-21T01:10:06.11
IV.MUCR.HHN. ML:1.1 0.000052499999999999995 0.26 AML other m 2021-07-21T01:10:06.24
IV.EPIT.HHN. ML:0.9 0.00005123229 0.18 AML other m 2021-07-21T01:10:01.80
IV.EPIT.HHE. ML:1.1 0.000068354125 1.34 AML other m 2021-07-21T01:10:02.72
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