Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 26-08-2022 and time 05:42:11 (Italy) in region 8 km N Niscemi (CL)

A magnitude ML 1.5 earthquake occured in region: 8 km N Niscemi (CL), on

  • 26-08-2022 03:42:11 (UTC)
  • 26-08-2022 05:42:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.2150, 14.3900 at 28 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
Niscemi CL 8 27558 27558
San Michele di Ganzaria CT 8 3245 30803
San Cono CT 9 2697 33500
Caltagirone CT 11 38686 72186
Mirabella Imbaccari CT 13 4912 77098
Butera CL 18 4754 81852
Mazzarino CL 19 12145 93997
Piazza Armerina EN 19 21886 115883

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NE of Gela (75827 inhabitants)
32 Km NW of Vittoria (63339 inhabitants)
42 Km SE of Caltanissetta (63360 inhabitants)
44 Km NW of Ragusa (73313 inhabitants)
52 Km NW of Modica (54633 inhabitants)
70 Km W of Catania (314555 inhabitants)
72 Km E of Agrigento (59770 inhabitants)
82 Km SW of Acireale (52622 inhabitants)
82 Km W 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 2022-08-26
03:42:11		 37.2153 14.3897 28 2023-01-31
19:03:58		 Bollettino Sismico Italiano INGV 113525541
Reviewed
Rev100 		ML 1.5 2022-08-26
03:42:10		 37.1873 14.3923 31 2022-08-26
03:50:21		 Sala Sismica INGV-Roma 108946701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-08-26 03:42:11 ± 0.24
Latitude 37.2153 ± 0.0117
Longitude 14.3897 ± 0.0102
Depth (km) 28 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 113525541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1290
Semi-minor axis of confidence ellipse (meter) 526
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 349
Circular confidence region, given by single value of horizontal uncertainty (meter) 1290.0
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 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.02248
Epicentral distance of station farthest from the epicenter (degree) 0.63762
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:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 113525541
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-01-13 23:32:55

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 108946701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-08-26 03:50:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHN. 2022-08-26T03:42:33.80 0.6 undecidable manual S 113 70.7736 106 0.72 38
IV.HAGA.HHZ. 2022-08-26T03:42:32.74 0.6 undecidable manual S 83 67.9764 107 0.35 43
IV.SSY.HHZ. 2022-08-26T03:42:31.11 0.6 undecidable manual S 96 60.7947 109 0.56 41
IV.HLNI.HHZ. 2022-08-26T03:42:26.64 0.6 undecidable manual S 71 45.0216 116 -0.02 48
IV.HAGA.HHZ. 2022-08-26T03:42:23.26 0.3 undecidable manual P 83 67.9764 107 -0.13 68
IV.HAVL.HHN. 2022-08-26T03:42:23.93 0.3 undecidable manual P 113 70.7736 106 0.14 67
IV.HVZN.HHZ. 2022-08-26T03:42:23.03 0.6 undecidable manual S 98 29.0487 129 -0.02 50
IV.HVIT.HHE. 2022-08-26T03:42:22.14 0.6 undecidable manual S 155 27.3504 131 -0.55 44
IV.SSY.HHZ. 2022-08-26T03:42:22.31 0.3 undecidable manual P 96 60.7947 109 -0.02 71
IV.HCRL.HHN. 2022-08-26T03:42:21.71 0.3 undecidable manual P 82 57.2982 110 -0.11 70
IV.RAFF.HHZ. 2022-08-26T03:42:20.03 0.6 undecidable manual S 288 2.4975 174 0.55 47
IV.HLNI.HHZ. 2022-08-26T03:42:19.83 0.1 undecidable manual P 71 45.0216 116 -0.26 92
IV.CLTA.HHN. 2022-08-26T03:42:19.72 0.3 undecidable manual P 261 38.3283 121 0.55 66
IV.HVZN.HHZ. 2022-08-26T03:42:17.82 0.3 undecidable manual P 98 29.0487 129 -0.18 72
IV.HVIT.HHE. 2022-08-26T03:42:17.26 0.3 undecidable manual P 155 27.3504 131 -0.53 67
IV.RAFF.HHZ. 2022-08-26T03:42:15.75 0.1 undecidable manual P 288 2.4975 174 -0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ACATE.HNE. ML:1.5 0.00012177879999999999 1.6192 AML other m 2022-08-26T03:42:15.08
IV.ACATE.EHN. ML:1.4 0.00009386331500000001 0.7808 AML other m 2022-08-26T03:42:15.94
IV.ACATE.EHE. ML:1.4 0.00010349322499999999 0.8016 AML other m 2022-08-26T03:42:16.53
IV.HVZN.HNN. ML:1.6 0.00014472780000000001 1.1104 AML other m 2022-08-26T03:42:16.94
IV.ACATE.HNN. ML:1.7 0.0002023414 0.5696 AML other m 2022-08-26T03:42:17.50
IV.RAFF.HHN. ML:1.0 0.000051844019999999995 0.12 AML other m 2022-08-26T03:42:19.56
IV.RAFF.HHE. ML:1.0 0.00005070656 1.28 AML other m 2022-08-26T03:42:20.86
IV.HLNI.HHN. ML:1.0 0.00002481214 0.1008 AML other m 2022-08-26T03:42:21.88
IV.SSY.HNE. ML:1.5 0.000057354280000000006 0.3808 AML other m 2022-08-26T03:42:24.20
IV.HVZN.HHN. ML:1.5 0.0001199556 0.1984 AML other m 2022-08-26T03:42:25.61
IV.HVZN.HNE. ML:1.4 0.00009134105000000001 0.6096 AML other m 2022-08-26T03:42:31.21
IV.HVZN.HHE. ML:1.5 0.00010799555 0.8208 AML other m 2022-08-26T03:42:31.62
IV.HLNI.HHE. ML:1.2 0.000034496275 0.0208 AML other m 2022-08-26T03:42:34.64
IV.SSY.HHN. ML:2.1 0.00023854375 0.2816 AML other m 2022-08-26T03:42:36.69
IV.SSY.HNN. ML:1.7 0.00009667991 0.2896 AML other m 2022-08-26T03:42:36.70
IV.SSY.HHE. ML:1.9 0.0001444705 0.0592 AML other m 2022-08-26T03:42:37.82
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