Earthquake with magnitude of ML 1.6 on date 27-09-2021 and time 06:08:00 (Italy) in region 6 km E Mazzarrone (CT)

A magnitude ML 1.6 earthquake occured in region: 6 km E Mazzarrone (CT), on

  • 27-09-2021 04:08:00 (UTC)
  • 27-09-2021 06:08:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.1040, 14.6200 at 22 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
Mazzarrone CT 6 4078 4078
Licodia Eubea CT 10 3081 7159
Chiaramonte Gulfi RG 11 8238 15397
Grammichele CT 13 13418 28815
Monterosso Almo RG 13 3032 31847
Vizzini CT 13 6241 38088
Acate RG 14 10954 49042
Giarratana RG 17 3048 52090
Comiso RG 18 30156 82246
Caltagirone CT 18 38686 120932
Vittoria RG 19 63339 184271
Mineo CT 19 5159 189430

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NE of Vittoria (63339 inhabitants)
22 Km NW of Ragusa (73313 inhabitants)
30 Km NW of Modica (54633 inhabitants)
33 Km E of Gela (75827 inhabitants)
60 Km W of Siracusa (122291 inhabitants)
61 Km SW of Catania (314555 inhabitants)
66 Km SE of Caltanissetta (63360 inhabitants)
74 Km SW of Acireale (52622 inhabitants)
95 Km E of Agrigento (59770 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 1.6 2021-09-27
04:08:00
37.1042 14.6202 22 2022-03-30
13:04:10
Bollettino Sismico Italiano INGV 96426161
Reviewed
Rev100
ML 1.6 2021-09-27
04:08:00
37.1028 14.6068 23 2021-09-27
04:14:54
Sala Sismica INGV-Roma 95925781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-27 04:08:00 ± 0.15
Latitude 37.1042 ± 0.0054
Longitude 14.6202 ± 0.0056
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96426161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 646
Semi-minor axis of confidence ellipse (meter) 236
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 171
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.10612
Epicentral distance of station farthest from the epicenter (degree) 0.52700
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 96426161
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-12 08:12:05

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 95925781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-27 04:14:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HSRS.HHZ. 2021-09-27T04:08:17.38 0.3 undecidable manual S 91 53.3022 104 -0.04 72
IV.HAVL.HHZ. 2021-09-27T04:08:16.11 0.6 undecidable manual S 110 47.2194 107 0.24 46
IV.HAGA.HHZ. 2021-09-27T04:08:16.89 0.6 undecidable manual S 67 51.3153 105 -0.03 48
IV.ISPIC.EHZ. 2021-09-27T04:08:15.15 0.6 undecidable manual S 145 43.8228 108 0.15 47
IV.SSY.HHZ. 2021-09-27T04:08:14.83 0.3 undecidable manual S 81 40.5261 110 0.66 62
IV.HCRL.HHZ. 2021-09-27T04:08:14.57 0.3 undecidable manual S 61 41.5251 109 0.16 71
IV.HLNI.HHZ. 2021-09-27T04:08:12.55 0.6 undecidable manual S 39 35.0427 114 -0.26 47
IV.CLTA.HHN. 2021-09-27T04:08:11.68 0.1 positive manual P 276 58.497 103 0.67 80
IV.HMDC.HHZ. 2021-09-27T04:08:10.14 0.3 undecidable manual S 138 21.6672 128 0.42 70
IV.RAFF.HHZ. 2021-09-27T04:08:10.71 0.6 undecidable manual S 300 26.2515 122 -0.03 50
IV.HSRS.HHZ. 2021-09-27T04:08:10.01 0.1 undecidable manual P 91 53.3022 104 -0.21 92
IV.HAVL.HHZ. 2021-09-27T04:08:09.35 0.6 undecidable manual P 110 47.2194 107 0.02 48
IV.HAGA.HHZ. 2021-09-27T04:08:09.71 0.6 undecidable manual P 67 51.3153 105 -0.22 46
IV.ACATE.EHZ. 2021-09-27T04:08:08.56 0.6 undecidable manual S 230 13.7751 143 0.3 49
IV.ISPIC.EHZ. 2021-09-27T04:08:08.65 0.1 negative manual P 145 43.8228 108 -0.17 94
IV.HVIT.HHZ. 2021-09-27T04:08:08.03 0.3 undecidable manual S 215 15.1737 140 -0.45 70
IV.SSY.HHZ. 2021-09-27T04:08:08.36 0.1 positive manual P 81 40.5261 110 0.01 98
IV.HVZN.HHZ. 2021-09-27T04:08:08.09 0.3 undecidable manual S 46 11.7771 147 0.14 76
IV.HCRL.HHZ. 2021-09-27T04:08:08.39 0.1 undecidable manual P 61 41.5251 109 -0.09 96
IV.HLNI.HHZ. 2021-09-27T04:08:07.19 0.1 positive manual P 39 35.0427 114 -0.37 92
IV.RAFF.HHZ. 2021-09-27T04:08:06.58 0.1 negative manual P 300 26.2515 122 0.21 97
IV.HMDC.HHZ. 2021-09-27T04:08:05.62 0.1 negative manual P 138 21.6672 128 -0.16 98
IV.HVZN.HHZ. 2021-09-27T04:08:04.61 0.1 negative manual P 46 11.7771 147 -0.14 100
IV.ACATE.EHZ. 2021-09-27T04:08:04.77 0.1 positive manual P 230 13.7751 143 -0.16 99
IV.HVIT.HHZ. 2021-09-27T04:08:04.80 0.3 undecidable manual P 215 15.1737 140 -0.26 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HVIT.HHN. ML:1.7 0.000311 0.4 AML other m 2021-09-27T04:08:08.49
IV.ACATE.EHE. ML:1.7 0.00029549999999999997 0.44 AML other m 2021-09-27T04:08:08.73
IV.ACATE.EHN. ML:1.6 0.00025550000000000003 0.24 AML other m 2021-09-27T04:08:08.72
IV.HVIT.HHE. ML:1.5 0.00020850000000000003 0.52 AML other m 2021-09-27T04:08:08.96
IV.HMDC.HHN. ML:1.6 0.0001905 0.68 AML other m 2021-09-27T04:08:10.11
IV.HMDC.HHE. ML:1.4 0.000132 1.16 AML other m 2021-09-27T04:08:10.03
IV.RAFF.HHN. ML:1.8 0.00027850000000000005 0.34 AML other m 2021-09-27T04:08:12.52
IV.RAFF.HHE. ML:1.5 0.0001295 0.16 AML other m 2021-09-27T04:08:12.54
IV.HLNI.HHE. ML:1.6 0.000131 0.14 AML other m 2021-09-27T04:08:12.71
IV.HLNI.HHN. ML:1.6 0.0001545 0.28 AML other m 2021-09-27T04:08:12.73
IV.SSY.HHN. ML:2.2 0.0004785 1.76 AML other m 2021-09-27T04:08:15.08
IV.ISPIC.EHE. ML:1.4 0.00006769999999999999 0.22 AML other m 2021-09-27T04:08:15.49
IV.ISPIC.EHN. ML:1.4 0.00006725000000000001 0.82 AML other m 2021-09-27T04:08:15.50
IV.SSY.HHE. ML:1.9 0.0002245 0.82 AML other m 2021-09-27T04:08:15.51
IV.HSRS.HHN. ML:1.6 0.0000797 0.14 AML other m 2021-09-27T04:08:17.73
IV.HCRL.HHN. ML:1.5 0.00008384999999999999 0.22 AML other m 2021-09-27T04:08:17.93
IV.HSRS.HHE. ML:1.4 0.00006035 0.42 AML other m 2021-09-27T04:08:17.72
IV.HAVL.HHE. ML:1.7 0.00013350000000000002 0.26 AML other m 2021-09-27T04:08:17.99
IV.HCRL.HHE. ML:1.4 0.0000653 1.34 AML other m 2021-09-27T04:08:18.07
IV.HAVL.HHN. ML:1.8 0.000164 0.12 AML other m 2021-09-27T04:08:18.56
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