Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 08-08-2021 and time 05:06:01 (UTC) in region 5 km N Pozzallo (RG)

A magnitude ML 1.3 earthquake occured in region: 5 km N Pozzallo (RG), on

  • 08-08-2021 05:06:01 (UTC)
  • 08-08-2021 07:06:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 36.7700, 14.8490 at 29 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Pozzallo RG 5 19552 19552
Ispica RG 5 16061 35613
Rosolini SR 11 21427 57040
Modica RG 13 54633 111673
Scicli RG 13 27077 138750

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SE of Modica (54633 inhabitants)
20 Km SE of Ragusa (73313 inhabitants)
34 Km SE of Vittoria (63339 inhabitants)
51 Km SW of Siracusa (122291 inhabitants)
63 Km SE of Gela (75827 inhabitants)
84 Km S of Catania (314555 inhabitants)
98 Km S of Acireale (52622 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
Reviewed
Rev100 		ML 1.3 2021-08-08
05:06:01		 36.7698 14.8492 29 2021-08-08
05:16:20		 Sala Sismica INGV-Roma 93821181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-08 05:06:01 ± 0.2
Latitude 36.7698 ± 0.0072
Longitude 14.8492 ± 0.0067
Depth (km) 29 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93821181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 615
Semi-minor axis of confidence ellipse (meter) 562
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 168
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 234
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.57826
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 93821181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-08 05:16:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTGR.HHZ. 2021-08-08T05:06:36.96 3.0 undecidable manual Pg 0.38 0
IV.ESCV.HHZ. 2021-08-08T05:06:31.63 3.0 undecidable manual Sn -2.94 0
IV.HAGA.HHZ. 2021-08-08T05:06:21.53 0.6 undecidable manual S 25 63.2922 109 -0.1 59
IV.HLNI.HHZ. 2021-08-08T05:06:21.41 0.6 undecidable manual S 2 64.1913 108 -0.47 55
IV.HCRL.HHZ. 2021-08-08T05:06:20.71 0.6 undecidable manual S 16 59.1963 110 0.09 61
IV.HSRS.HHE. 2021-08-08T05:06:18.10 0.6 undecidable manual S 43 48.7179 115 0.06 62
IV.SSY.HHZ. 2021-08-08T05:06:17.96 0.6 undecidable manual S 25 47.4192 115 0.25 60
IV.HVZN.HHZ. 2021-08-08T05:06:17.93 0.6 undecidable manual S 345 46.8198 116 0.35 59
IV.HVIT.HHE. 2021-08-08T05:06:15.51 0.3 undecidable manual S 310 38.1285 122 -0.03 96
IV.HAVL.HHZ. 2021-08-08T05:06:14.05 0.6 undecidable manual S 49 32.0457 127 -0.15 63
IV.HLNI.HHZ. 2021-08-08T05:06:13.04 0.3 positive manual P 2 64.1913 108 -0.23 87
IV.HCRL.HHZ. 2021-08-08T05:06:12.38 0.3 undecidable manual P 16 59.1963 110 -0.16 89
IV.HAGA.HHZ. 2021-08-08T05:06:12.65 0.6 undecidable manual P 25 63.2922 109 -0.48 55
IV.HMDC.HHZ. 2021-08-08T05:06:12.16 0.6 undecidable manual S 344 21.7671 139 -0.01 66
IV.HSRS.HHE. 2021-08-08T05:06:11.73 0.6 undecidable manual P 43 48.7179 115 0.68 53
IV.ISPIC.EHZ. 2021-08-08T05:06:10.13 0.6 undecidable manual S 76 4.995 169 -0.02 67
IV.SSY.HHZ. 2021-08-08T05:06:10.96 0.3 undecidable manual P 25 47.4192 115 0.09 93
IV.HVZN.HHZ. 2021-08-08T05:06:10.94 0.3 undecidable manual P 345 46.8198 116 0.15 92
IV.HVIT.HHE. 2021-08-08T05:06:09.52 0.3 undecidable manual P 310 38.1285 122 -0.09 95
IV.HAVL.HHZ. 2021-08-08T05:06:08.87 0.3 undecidable manual P 49 32.0457 127 0.03 96
IV.HMDC.HHZ. 2021-08-08T05:06:07.73 0.6 undecidable manual P 344 21.7671 139 0.06 65
IV.ISPIC.EHZ. 2021-08-08T05:06:06.54 0.3 undecidable manual P 76 4.995 169 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HMDC.HHE. ML:1.1 0.000053 0.64 AML other m 2021-08-08T05:06:12.53
IV.HMDC.HHN. ML:1.2 0.00006429999999999999 0.76 AML other m 2021-08-08T05:06:14.45
IV.HAVL.HHE. ML:1.4 0.00007525 0.8 AML other m 2021-08-08T05:06:15.96
IV.HAVL.HHN. ML:1.4 0.0000853 1.5 AML other m 2021-08-08T05:06:16.02
IV.HVZN.HHN. ML:1.5 0.0000819 0.92 AML other m 2021-08-08T05:06:18.80
IV.HVZN.HHE. ML:1.5 0.00007145 0.58 AML other m 2021-08-08T05:06:19.44
IV.SSY.HHE. ML:1.4 0.000054870320000000004 0.64 AML other m 2021-08-08T05:06:20.92
IV.HLNI.HHN. ML:1.1 0.000019757165 0.8576 AML other m 2021-08-08T05:06:22.74
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