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.

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
Graniti ME 19 1492 307127
Motta Camastra ME 19 845 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

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
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 Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2021-01-24T08:46:03.43 0.6 undecidable manual S 184 0.7680 97 0.94 32
IV.SSY.HHZ. 2021-01-24T08:45:57.68 0.6 undecidable manual S 189 0.5747 99 0.85 35
IV.HCRL.HHZ. 2021-01-24T08:45:54.01 0.6 undecidable manual S 195 0.4587 102 0.56 40
IV.HLNI.HHZ. 2021-01-24T08:45:53.05 0.6 undecidable manual S 213 0.4506 102 -0.16 45
IV.HAGA.HHZ. 2021-01-24T08:45:53.32 0.6 undecidable manual S 183 0.4416 103 0.37 43
IV.HAVL.HHZ. 2021-01-24T08:45:51.59 0.1 undecidable manual P 184 0.7680 97 -0.19 84
IV.SSY.HHZ. 2021-01-24T08:45:48.44 0.3 undecidable manual P 189 0.5747 99 -0.07 67
IV.ESML.HHZ. 2021-01-24T08:45:47.80 0.6 undecidable manual S 246 0.2626 114 -0.11 47
IV.EMSG.HHN. 2021-01-24T08:45:47.25 0.6 undecidable manual S 297 0.2068 122 0.83 39
IV.HCRL.HHZ. 2021-01-24T08:45:46.47 0.1 undecidable manual P 195 0.4587 102 -0.09 91
IV.HAGA.HHZ. 2021-01-24T08:45:46.05 0.1 undecidable manual P 183 0.4416 103 -0.22 89
IV.AIO.HHZ. 2021-01-24T08:45:46.68 0.6 undecidable manual S 9 0.2473 116 -0.81 38
IV.ENIC.HHZ. 2021-01-24T08:45:45.43 0.6 undecidable manual S 233 0.1592 131 0.15 48
IV.EPIT.HHN. 2021-01-24T08:45:45.36 0.6 undecidable manual S 310 0.1304 137 0.68 42
IV.ECTS.HHZ. 2021-01-24T08:45:45.16 0.6 undecidable manual S 343 0.1628 130 -0.21 47
IV.MUCR.HHZ. 2021-01-24T08:45:45.92 0.3 undecidable manual P 323 0.3993 105 0.36 65
IV.EMNR.HHZ. 2021-01-24T08:45:45.94 0.6 undecidable manual S 306 0.1529 132 0.79 40
IV.HLNI.HHZ. 2021-01-24T08:45:45.94 0.1 undecidable manual P 213 0.4506 102 -0.49 84
IV.EMPL.HHZ. 2021-01-24T08:45:44.79 0.6 undecidable manual S 254 0.1745 127 -0.85 38
IV.ECBD.HHN. 2021-01-24T08:45:44.17 0.6 undecidable manual S 305 0.0926 147 0.18 48
IV.ESPC.HHN. 2021-01-24T08:45:43.81 0.6 undecidable manual S 254 0.1268 138 -0.8 39
IV.EVRN.HHZ. 2021-01-24T08:45:43.56 0.6 undecidable manual S 225 0.0522 161 0.09 49
IV.ESML.HHZ. 2021-01-24T08:45:43.89 0.3 undecidable manual P 246 0.2626 114 0.53 64
IV.ESAL.HHE. 2021-01-24T08:45:43.68 0.6 undecidable manual S 307 0.0477 162 0.26 47
IV.EMFO.HHE. 2021-01-24T08:45:43.18 0.6 undecidable manual S 277 0.0737 154 -0.53 44
IV.EFIU.HHE. 2021-01-24T08:45:43.63 0.6 undecidable manual S 19 0.0665 156 0 50
IV.AIO.HHZ. 2021-01-24T08:45:43.31 0.1 undecidable manual P 9 0.2473 116 0.19 93
IV.EMNR.HHZ. 2021-01-24T08:45:42.00 0.3 undecidable manual P 306 0.1529 132 0.23 70
IV.EMSG.HHN. 2021-01-24T08:45:42.89 0.3 undecidable manual P 297 0.2068 122 0.38 67
IV.ENIC.HHZ. 2021-01-24T08:45:42.10 0.3 undecidable manual P 233 0.1592 131 0.25 70
IV.ECBD.HHN. 2021-01-24T08:45:41.08 0.1 undecidable manual P 305 0.0926 147 -0.02 99
IV.EPIT.HHN. 2021-01-24T08:45:41.65 0.1 undecidable manual P 310 0.1304 137 0.15 96
IV.EMPL.HHZ. 2021-01-24T08:45:41.48 0.3 undecidable manual P 254 0.1745 127 -0.57 64
IV.ECTS.HHZ. 2021-01-24T08:45:41.79 0.1 positive manual P 343 0.1628 130 -0.11 96
IV.ESPC.HHN. 2021-01-24T08:45:41.00 0.1 undecidable manual P 254 0.1268 138 -0.46 90
IV.EMCN.HHZ. 2021-01-24T08:45:41.53 0.3 undecidable manual P 299 0.1340 136 -0.01 74
IV.ESLN.HHZ. 2021-01-24T08:45:41.36 0.3 undecidable manual P 259 0.1682 129 -0.61 63
IV.EPOZ.HHZ. 2021-01-24T08:45:41.03 0.1 undecidable manual P 175 0.0549 160 0.22 95
IV.EVRN.HHZ. 2021-01-24T08:45:40.79 0.1 negative manual P 225 0.0522 161 -0.01 100
IV.ESAL.HHE. 2021-01-24T08:45:40.69 0.1 undecidable manual P 307 0.0477 162 -0.08 99
IV.EMFO.HHE. 2021-01-24T08:45:40.74 0.1 undecidable manual P 277 0.0737 154 -0.2 96
IV.EFIU.HHE. 2021-01-24T08:45:40.83 0.1 undecidable manual P 19 0.0665 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
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
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