Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 24-01-2021 and time 09:45:37 (Italy) in region 1 km SW Giarre (CT)

A magnitude ML 2.5 earthquake occured in region: 1 km SW Giarre (CT), on

  • 24-01-2021 08:45:37 (UTC)
  • 24-01-2021 09:45:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7270, 15.1820 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
Giarre CT 1 27659 27659
Riposto CT 2 14838 42497
Mascali CT 4 14282 56779
Sant'Alfio CT 4 1582 58361
Santa Venerina CT 6 8592 66953
Milo CT 6 1087 68040
Zafferana Etnea CT 8 9517 77557
Fiumefreddo di Sicilia CT 8 9623 87180
Piedimonte Etneo CT 9 3963 91143
Calatabiano CT 12 5308 96451
Acireale CT 13 52622 149073
Linguaglossa CT 13 5403 154476
Aci Catena CT 14 29851 184327
Aci Sant'Antonio CT 14 17984 202311
Viagrande CT 15 8563 210874
Trecastagni CT 15 10910 221784
Giardini-Naxos ME 15 9415 231199
Gaggi ME 15 3184 234383
Aci Bonaccorsi CT 16 3524 237907
Pedara CT 16 14102 252009
Taormina ME 17 10960 262969
Castelmola ME 17 1088 264057
Valverde CT 17 7840 271897
San Giovanni la Punta CT 18 23060 294957
Castiglione di Sicilia CT 18 3215 298172
Nicolosi CT 18 7463 305635
Motta Camastra ME 19 845 306480
Graniti ME 19 1492 307972
San Gregorio di Catania CT 19 11966 319938
Aci Castello CT 19 18723 338661
Tremestieri Etneo CT 19 20589 359250
Francavilla di Sicilia ME 20 3945 363195

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km N of Acireale (52622 inhabitants)
26 Km NE of Catania (314555 inhabitants)
59 Km SW of Reggio di Calabria (183035 inhabitants)
62 Km SW of Messina (238439 inhabitants)
75 Km N of Siracusa (122291 inhabitants)
98 Km NE of Ragusa (73313 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 2.5 2021-01-24
08:45:37		 37.7267 15.1823 19 2021-07-12
16:55:09		 Bollettino Sismico Italiano INGV 89798431
Reviewed
Rev200 		ML 2.1 2021-01-24
08:45:37		 37.742 15.118 10 2021-05-05
13:27:19		 Sala Operativa INGV_OE (Catania) 86523311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-24 08:45:37 ± 0.15
Latitude 37.7267 ± 0.0054
Longitude 15.1823 ± 0.0114
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89798431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 845
Semi-minor axis of confidence ellipse (meter) 631
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 86
Circular confidence region, given by single value of horizontal uncertainty (meter) 840.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 156
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
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) 0.04766
Epicentral distance of station farthest from the epicenter (degree) 0.76802
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.4
Num. used stations 31
Type of magnitude ML
Reference to an origin 89798431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-05 13:27:03

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 86523311
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-01-24 08:57:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2021-01-24T08:46:03.43 0.6 undecidable manual S 184 85.248 97 0.94 32
IV.SSY.HHZ. 2021-01-24T08:45:57.68 0.6 undecidable manual S 189 63.7917 99 0.85 35
IV.HCRL.HHZ. 2021-01-24T08:45:54.01 0.6 undecidable manual S 195 50.9157 102 0.56 40
IV.HLNI.HHZ. 2021-01-24T08:45:53.05 0.6 undecidable manual S 213 50.0166 102 -0.16 45
IV.HAGA.HHZ. 2021-01-24T08:45:53.32 0.6 undecidable manual S 183 49.0176 103 0.37 43
IV.HAVL.HHZ. 2021-01-24T08:45:51.59 0.1 undecidable manual P 184 85.248 97 -0.19 84
IV.SSY.HHZ. 2021-01-24T08:45:48.44 0.3 undecidable manual P 189 63.7917 99 -0.07 67
IV.ESML.HHZ. 2021-01-24T08:45:47.80 0.6 undecidable manual S 246 29.1486 114 -0.11 47
IV.EMSG.HHN. 2021-01-24T08:45:47.25 0.6 undecidable manual S 297 22.9548 122 0.83 39
IV.HAGA.HHZ. 2021-01-24T08:45:46.05 0.1 undecidable manual P 183 49.0176 103 -0.22 89
IV.AIO.HHZ. 2021-01-24T08:45:46.68 0.6 undecidable manual S 9 27.4503 116 -0.81 38
IV.HCRL.HHZ. 2021-01-24T08:45:46.47 0.1 undecidable manual P 195 50.9157 102 -0.09 91
IV.ECTS.HHZ. 2021-01-24T08:45:45.16 0.6 undecidable manual S 343 18.0708 130 -0.21 47
IV.MUCR.HHZ. 2021-01-24T08:45:45.92 0.3 undecidable manual P 323 44.3223 105 0.36 65
IV.EMNR.HHZ. 2021-01-24T08:45:45.94 0.6 undecidable manual S 306 16.9719 132 0.79 40
IV.HLNI.HHZ. 2021-01-24T08:45:45.94 0.1 undecidable manual P 213 50.0166 102 -0.49 84
IV.ENIC.HHZ. 2021-01-24T08:45:45.43 0.6 undecidable manual S 233 17.6712 131 0.15 48
IV.EPIT.HHN. 2021-01-24T08:45:45.36 0.6 undecidable manual S 310 14.4744 137 0.68 42
IV.ECBD.HHN. 2021-01-24T08:45:44.17 0.6 undecidable manual S 305 10.2786 147 0.18 48
IV.EMPL.HHZ. 2021-01-24T08:45:44.79 0.6 undecidable manual S 254 19.3695 127 -0.85 38
IV.ESPC.HHN. 2021-01-24T08:45:43.81 0.6 undecidable manual S 254 14.0748 138 -0.8 39
IV.EVRN.HHZ. 2021-01-24T08:45:43.56 0.6 undecidable manual S 225 5.7942 161 0.09 49
IV.ESML.HHZ. 2021-01-24T08:45:43.89 0.3 undecidable manual P 246 29.1486 114 0.53 64
IV.ESAL.HHE. 2021-01-24T08:45:43.68 0.6 undecidable manual S 307 5.2947 162 0.26 47
IV.EMFO.HHE. 2021-01-24T08:45:43.18 0.6 undecidable manual S 277 8.1807 154 -0.53 44
IV.EFIU.HHE. 2021-01-24T08:45:43.63 0.6 undecidable manual S 19 7.3815 156 0 50
IV.AIO.HHZ. 2021-01-24T08:45:43.31 0.1 undecidable manual P 9 27.4503 116 0.19 93
IV.EMNR.HHZ. 2021-01-24T08:45:42.00 0.3 undecidable manual P 306 16.9719 132 0.23 70
IV.EMSG.HHN. 2021-01-24T08:45:42.89 0.3 undecidable manual P 297 22.9548 122 0.38 67
IV.ENIC.HHZ. 2021-01-24T08:45:42.10 0.3 undecidable manual P 233 17.6712 131 0.25 70
IV.EPIT.HHN. 2021-01-24T08:45:41.65 0.1 undecidable manual P 310 14.4744 137 0.15 96
IV.EMPL.HHZ. 2021-01-24T08:45:41.48 0.3 undecidable manual P 254 19.3695 127 -0.57 64
IV.ECTS.HHZ. 2021-01-24T08:45:41.79 0.1 positive manual P 343 18.0708 130 -0.11 96
IV.ESPC.HHN. 2021-01-24T08:45:41.00 0.1 undecidable manual P 254 14.0748 138 -0.46 90
IV.EMCN.HHZ. 2021-01-24T08:45:41.53 0.3 undecidable manual P 299 14.874 136 -0.01 74
IV.ESLN.HHZ. 2021-01-24T08:45:41.36 0.3 undecidable manual P 259 18.6702 129 -0.61 63
IV.EPOZ.HHZ. 2021-01-24T08:45:41.03 0.1 undecidable manual P 175 6.0939 160 0.22 95
IV.ECBD.HHN. 2021-01-24T08:45:41.08 0.1 undecidable manual P 305 10.2786 147 -0.02 99
IV.EVRN.HHZ. 2021-01-24T08:45:40.79 0.1 negative manual P 225 5.7942 161 -0.01 100
IV.ESAL.HHE. 2021-01-24T08:45:40.69 0.1 undecidable manual P 307 5.2947 162 -0.08 99
IV.EMFO.HHE. 2021-01-24T08:45:40.74 0.1 undecidable manual P 277 8.1807 154 -0.2 96
IV.EFIU.HHE. 2021-01-24T08:45:40.83 0.1 undecidable manual P 19 7.3815 156 -0.06 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EVRN.HHN. ML:3.1 0.010840621 0.16 AML other m 2021-01-24T08:45:43.78
IV.EVRN.HNN. ML:3.3 0.015 0.2 AML other m 2021-01-24T08:45:43.78
IV.EVRN.HHE. ML:3.3 0.01682571 0.2176 AML other m 2021-01-24T08:45:43.89
IV.EVRN.HNE. ML:3.2 0.013122326000000002 0.1984 AML other m 2021-01-24T08:45:43.90
IV.EPOZ.HHN. ML:2.5 0.0025111075 0.1152 AML other m 2021-01-24T08:45:45.75
IV.ECTS.HHE. ML:2.7 0.002869373 0.5824 AML other m 2021-01-24T08:45:45.80
IV.ECTS.HHN. ML:2.4 0.0016965385 0.5952 AML other m 2021-01-24T08:45:47.02
IV.ENIC.HHE. ML:2.6 0.0027044395000000005 0.3008 AML other m 2021-01-24T08:45:48.35
IV.ENIC.HNE. ML:2.7 0.0033271950000000002 0.1728 AML other m 2021-01-24T08:45:47.33
IV.ENIC.HHN. ML:2.7 0.0030930140000000003 0.1792 AML other m 2021-01-24T08:45:47.81
IV.EPOZ.HHE. ML:2.4 0.0020303635 0.256 AML other m 2021-01-24T08:45:48.29
IV.AIO.HHE. ML:1.9 0.0003560299 0.1792 AML other m 2021-01-24T08:45:49.66
IV.ESML.HHE. ML:2.2 0.0006901492499999999 0.2048 AML other m 2021-01-24T08:45:50.12
IV.AIO.HHN. ML:2.0 0.00045962119999999997 0.32 AML other m 2021-01-24T08:45:50.90
IV.ESML.HHN. ML:2.0 0.00043149145 0.2816 AML other m 2021-01-24T08:45:50.40
IV.ENIC.HNN. ML:2.7 0.003197769 0.2112 AML other m 2021-01-24T08:45:47.73
IV.HAGA.HHN. ML:1.8 0.00015721455 0.32 AML other m 2021-01-24T08:45:55.53
IV.HCRL.HHN. ML:1.9 0.00018119675000000002 0.16 AML other m 2021-01-24T08:46:01.11
IV.MUCR.HHE. ML:2.2 0.00039278919999999996 0.5952 AML other m 2021-01-24T08:45:54.49
IV.HLNI.HHE. ML:1.6 0.000107282745 0.0832 AML other m 2021-01-24T08:45:55.97
IV.HCRL.HHE. ML:2.0 0.00024990095 0.1408 AML other m 2021-01-24T08:45:55.95
IV.HLNI.HHN. ML:1.8 0.00015411013000000002 0.1984 AML other m 2021-01-24T08:45:55.47
IV.HAGA.HHE. ML:1.7 0.000134928665 0.2368 AML other m 2021-01-24T08:45:56.90
IV.MUCR.HHN. ML:2.0 0.00027365744999999995 0.3392 AML other m 2021-01-24T08:45:56.35
IV.SSY.HHE. ML:2.4 0.00049168055 0.16 AML other m 2021-01-24T08:46:00.66
IV.SSY.HHN. ML:2.8 0.00117895 0.1408 AML other m 2021-01-24T08:45:59.39
IV.HAVL.HHN. ML:2.6 0.00057906735 0.32 AML other m 2021-01-24T08:46:04.29
IV.HAVL.HHE. ML:2.6 0.00047336754999999995 0.2624 AML other m 2021-01-24T08:46:06.59
IV.EMCN.HHE. ML:2.7 0.0035731814999999997 0.4416 AML other m 2021-01-24T08:45:54.52
IV.EMCN.HHN. ML:2.7 0.003431758 0.384 AML other m 2021-01-24T08:45:43.06
IV.EMCN.HNN. ML:2.7 0.003528921 0.3968 AML other m 2021-01-24T08:45:43.05
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
Waveforms Seismic signals in miniseed + resp format Download