Earthquake with magnitude of ML 2.3 on date 14-08-2021 and time 13:37:47 (Italy) in region Costa Siracusana (Siracusa)

A magnitude ML 2.3 earthquake occured in region: Costa Siracusana (Siracusa), on

  • 14-08-2021 11:37:47 (UTC)
  • 14-08-2021 13:37:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.0580, 15.2870 at 26 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
Siracusa SR 1 122291 122291
Floridia SR 12 22762 145053
Priolo Gargallo SR 14 12091 157144
Solarino SR 16 8091 165235
Melilli SR 20 13621 178856

Municipalities with at least 50000 inhabitants

An earthquake occurred to
1 Km W of Siracusa (122291 inhabitants)
52 Km E of Ragusa (73313 inhabitants)
52 Km E of Modica (54633 inhabitants)
53 Km SE of Catania (314555 inhabitants)
63 Km S of Acireale (52622 inhabitants)
68 Km E of Vittoria (63339 inhabitants)
92 Km E of Gela (75827 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 2.3 2021-08-14
11:37:47
37.0583 15.2868 26 2021-12-29
11:12:31
Bollettino Sismico Italiano INGV 95535181
Reviewed
Rev100
ML 2.4 2021-08-14
11:37:46
37.0603 15.3103 29 2021-08-14
11:42:39
Sala Sismica INGV-Roma 94134251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-14 11:37:47 ± 0.15
Latitude 37.0583 ± 0.0045
Longitude 15.2868 ± 0.0079
Depth (km) 26 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95535181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 633
Semi-minor axis of confidence ellipse (meter) 335
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 270
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 213
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.06205
Epicentral distance of station farthest from the epicenter (degree) 0.91371
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 95535181
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-17 07:13:12

ML:2.4

Field Value
Value 2.4
Uncertainty 0.1
Num. used stations 26
Type of magnitude ML
Reference to an origin 94134251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-14 11:42:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ACATE.HNE. 2021-08-14T11:38:09.32 0.6 undecidable manual S 267 69.6747 104 0.29 43
IV.HVIT.HHZ. 2021-08-14T11:38:08.64 0.6 undecidable manual S 264 68.1762 105 0.01 45
IV.AIO.HHE. 2021-08-14T11:38:04.51 0.6 undecidable manual P 357 101.4207 99 -0.19 40
IV.HVZN.HHZ. 2021-08-14T11:38:04.87 0.6 undecidable manual S 285 52.3032 110 0.29 44
IV.HLNI.HHZ. 2021-08-14T11:38:03.21 0.6 undecidable manual S 311 48.8178 111 -0.5 41
IV.HMDC.HHZ. 2021-08-14T11:38:02.77 0.6 undecidable manual S 256 45.9207 113 -0.24 45
IV.HPAC.HHZ. 2021-08-14T11:38:02.53 0.6 undecidable manual S 210 44.7219 114 -0.16 46
IV.ISPIC.EHZ. 2021-08-14T11:38:02.94 0.6 undecidable manual S 228 45.9207 113 -0.05 47
IT.LNT.HGZ. 2021-08-14T11:38:01.16 0.6 undecidable manual S 315 35.8419 120 0.58 43
IV.ACATE.HNE. 2021-08-14T11:38:00.34 0.6 undecidable manual P 267 69.6747 104 0.42 41
IV.HCRL.HHZ. 2021-08-14T11:38:00.28 0.6 undecidable manual S 318 33.5442 122 0.22 46
IV.EPOZ.HHZ. 2021-08-14T11:38:00.50 0.6 undecidable manual P 353 68.5758 105 0.75 37
IV.HVIT.HHZ. 2021-08-14T11:37:59.53 0.6 undecidable manual P 264 68.1762 105 -0.16 44
IV.HAGA.HHZ. 2021-08-14T11:37:58.52 0.6 undecidable manual S 335 27.75 127 -0.25 46
IV.HAVL.HHZ. 2021-08-14T11:37:57.05 0.6 undecidable manual S 233 18.2706 141 0.11 48
IV.HVZN.HHZ. 2021-08-14T11:37:57.41 0.1 undecidable manual P 285 52.3032 110 0.06 92
IV.ISPIC.EHZ. 2021-08-14T11:37:56.36 0.6 undecidable manual P 228 45.9207 113 -0.07 47
IV.HMDC.HHZ. 2021-08-14T11:37:56.38 0.3 undecidable manual P 256 45.9207 113 -0.06 70
IV.HLNI.HHZ. 2021-08-14T11:37:56.63 0.1 negative manual P 311 48.8178 111 -0.22 89
IV.HPAC.HHZ. 2021-08-14T11:37:56.28 0.3 undecidable manual P 210 44.7219 114 0.02 69
IV.HSRS.HHZ. 2021-08-14T11:37:55.33 0.6 undecidable manual S 304 6.8931 163 -0.17 49
IT.LNT.HGZ. 2021-08-14T11:37:54.95 0.6 undecidable manual P 315 35.8419 120 -0.09 47
IV.HCRL.HHZ. 2021-08-14T11:37:54.73 0.6 undecidable manual P 318 33.5442 122 -0.01 48
IV.HAGA.HHZ. 2021-08-14T11:37:53.89 0.1 negative manual P 335 27.75 127 -0.1 95
IV.HAVL.HHZ. 2021-08-14T11:37:52.95 0.1 negative manual P 233 18.2706 141 0.01 97
IV.HSRS.HHZ. 2021-08-14T11:37:52.05 0.1 negative manual P 304 6.8931 163 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HSRS.HHN. ML:2.3 0.00116101725 0.1152 AML other m 2021-08-14T11:37:55.63
IV.HSRS.HHE. ML:2.1 0.0007637079 0.1792 AML other m 2021-08-14T11:37:55.70
IV.HAVL.HHE. ML:2.4 0.0013826819999999999 0.1984 AML other m 2021-08-14T11:37:57.23
IV.HAVL.HHN. ML:2.5 0.00144280575 0.0832 AML other m 2021-08-14T11:37:57.46
IV.HAGA.HHN. ML:2.3 0.0007922042 0.0832 AML other m 2021-08-14T11:37:58.00
IV.HAGA.HHE. ML:2.4 0.0009129544499999999 0.0768 AML other m 2021-08-14T11:37:59.06
IV.SSY.HHN. ML:2.8 0.00276 0.18 AML other m 2021-08-14T11:38:00.14
IV.SSY.HHE. ML:2.4 0.00101926695 0.16 AML other m 2021-08-14T11:38:01.08
IV.ISPIC.HNE. ML:2.2 0.000358584655 0.2368 AML other m 2021-08-14T11:38:03.49
IV.ISPIC.HNN. ML:2.3 0.00047757135000000005 0.224 AML other m 2021-08-14T11:38:03.38
IV.HMDC.HHN. ML:2.3 0.0005837363 0.16 AML other m 2021-08-14T11:38:03.46
IV.HMDC.HNN. ML:2.3 0.00045365334999999994 0.16 AML other m 2021-08-14T11:38:03.46
IV.HPAC.HHN. ML:2.5 0.00078 0.14 AML other m 2021-08-14T11:38:03.50
IV.ISPIC.EHN. ML:2.3 0.0004704304500000001 0.32 AML other m 2021-08-14T11:38:03.43
IV.HLNI.HHN. ML:2.3 0.00047036805000000005 0.1024 AML other m 2021-08-14T11:38:04.30
IV.HPAC.HHE. ML:2.1 0.00031916685 0.1408 AML other m 2021-08-14T11:38:04.64
IV.HLNI.HHE. ML:2.2 0.00040555459999999996 0.1216 AML other m 2021-08-14T11:38:04.00
IV.ISPIC.EHE. ML:2.1 0.0003178815 0.096 AML other m 2021-08-14T11:38:03.50
IV.HMDC.HHE. ML:2.3 0.00048699999999999997 0.28 AML other m 2021-08-14T11:38:05.34
IV.HMDC.HNE. ML:2.2 0.00040899999999999997 0.28 AML other m 2021-08-14T11:38:05.34
IV.HVZN.HNN. ML:2.5 0.00071544175 0.2752 AML other m 2021-08-14T11:38:08.15
IV.HVZN.HHN. ML:2.6 0.0008217147 0.3456 AML other m 2021-08-14T11:38:07.59
IV.HVZN.HHE. ML:2.4 0.0005458183999999999 0.2624 AML other m 2021-08-14T11:38:08.30
IV.HVZN.HNE. ML:2.4 0.00048370705 0.2624 AML other m 2021-08-14T11:38:08.31
IV.HVIT.HHE. ML:2.6 0.0006015 0.16 AML other m 2021-08-14T11:38:09.30
IV.HVIT.HHN. ML:2.4 0.00037981275 0.1792 AML other m 2021-08-14T11:38:09.09
IV.RAFF.HHN. ML:2.1 0.00014888802000000002 0.16 AML other m 2021-08-14T11:38:15.97
IV.RAFF.HHE. ML:2.3 0.0002475 0.4 AML other m 2021-08-14T11:38:15.64
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