Earthquake with magnitude of ML 1.2 on date 31-07-2021 and time 17:29:21 (Italy) in region 10 km NW Mineo (CT)

A magnitude ML 1.2 earthquake occured in region: 10 km NW Mineo (CT), on

  • 31-07-2021 15:29:21 (UTC)
  • 31-07-2021 17:29:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.312, 14.59 at 27 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Mineo CT 10 5159 5159
Caltagirone CT 11 38686 43845
Grammichele CT 11 13418 57263
Ramacca CT 12 10894 68157
Mirabella Imbaccari CT 13 4912 73069
Palagonia CT 14 16608 89677
San Michele di Ganzaria CT 15 3245 92922
Aidone EN 17 4889 97811
Militello in Val di Catania CT 19 7443 105254
Raddusa CT 19 3178 108432
San Cono CT 20 2697 111129
Licodia Eubea CT 20 3081 114210

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NE of Gela (75827 inhabitants)
41 Km N of Vittoria (63339 inhabitants)
45 Km N of Ragusa (73313 inhabitants)
49 Km W of Catania (314555 inhabitants)
51 Km E of Caltanissetta (63360 inhabitants)
53 Km N of Modica (54633 inhabitants)
61 Km SW of Acireale (52622 inhabitants)
68 Km W of Siracusa (122291 inhabitants)
89 Km E of Agrigento (59770 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.2 2021-07-31
15:29:21
37.3117 14.5898 27 2021-07-31
15:42:22
Sala Sismica INGV-Roma 93444151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-31 15:29:21 ± 0.37
Latitude 37.3117 ± 0.0153
Longitude 14.5898 ± 0.0124
Depth (km) 27 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93444151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1466
Semi-minor axis of confidence ellipse (meter) 963
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 186
Circular confidence region, given by single value of horizontal uncertainty (meter) 1470
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 197
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.55128
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 11
Type of magnitude ML
Reference to an origin 93444151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-31 15:42:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.IST3.HHZ. 2021-07-31T15:30:12.38 3.0 undecidable manual Sg 0.2 0
IV.GIZZ.HHZ. 2021-07-31T15:29:57.18 3.0 negative manual Pn -0.33 0
IV.HAVL.HHZ. 2021-07-31T15:29:41.28 0.3 undecidable manual S 130 0.5513 108 0.22 67
IV.HAGA.HHZ. 2021-07-31T15:29:38.48 0.6 undecidable manual S 93 0.4506 112 0.24 46
IV.SSY.HHZ. 2021-07-31T15:29:37.85 0.3 undecidable manual S 112 0.4146 114 0.58 64
IV.HMDC.HHZ. 2021-07-31T15:29:35.89 0.6 undecidable manual S 156 0.3849 116 -0.58 43
IV.HAVL.HHZ. 2021-07-31T15:29:33.25 0.3 undecidable manual P 130 0.5513 108 0.41 65
IV.RAFF.HHZ. 2021-07-31T15:29:32.74 0.3 undecidable manual S 244 0.2014 136 0.72 61
IV.HLNI.HHZ. 2021-07-31T15:29:32.44 0.3 undecidable manual S 81 0.2275 132 -0.12 72
IV.HAGA.HHZ. 2021-07-31T15:29:31.09 0.3 undecidable manual P 93 0.4506 112 -0.13 70
IV.HVZN.HHZ. 2021-07-31T15:29:30.93 0.3 undecidable manual S 143 0.1664 141 -0.4 70
IV.SSY.HHZ. 2021-07-31T15:29:30.67 0.3 undecidable manual P 112 0.4146 114 0.01 72
IV.HMDC.HHZ. 2021-07-31T15:29:29.84 0.3 undecidable manual P 156 0.3849 116 -0.35 68
IV.HVZN.HHZ. 2021-07-31T15:29:27.05 0.3 undecidable manual P 143 0.1664 141 -0.17 73
IV.RAFF.HHZ. 2021-07-31T15:29:27.61 0.1 undecidable manual P 244 0.2014 136 -0.01 100
IV.HLNI.HHZ. 2021-07-31T15:29:27.66 0.1 undecidable manual P 81 0.2275 132 -0.28 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HLNI.HHE. ML:0.9 3.24E-5 1.84 AML other m 2021-07-31T15:29:33.92
IV.HLNI.HHN. ML:0.9 3.17E-5 1.86 AML other m 2021-07-31T15:29:33.04
IV.RAFF.HHN. ML:1.2 5.885E-5 0.24 AML other m 2021-07-31T15:29:33.16
IV.RAFF.HHE. ML:1 4.5882665E-5 0.2304 AML other m 2021-07-31T15:29:32.99
IV.HAVL.HHE. ML:1.7 9.607353E-5 0.1408 AML other m 2021-07-31T15:29:42.53
IV.HAVL.HHN. ML:1.8 0.00010541706 0.1408 AML other m 2021-07-31T15:29:42.53
IV.IST3.HNE. ML:4 0.00412 0.52 AML other m 2021-07-31T15:30:26.35
IV.IST3.HHE. ML:4.1 0.0046 0.54 AML other m 2021-07-31T15:30:26.35
IV.IST3.HNN. ML:4.2 0.00598 0.38 AML other m 2021-07-31T15:30:28.45
IV.IST3.HHN. ML:4.2 0.00659 0.44 AML other m 2021-07-31T15:30:28.45
IV.HMDC.HHE. ML:1 3.2392365E-5 0.1408 AML other m 2021-07-31T15:29:36.83
IV.HMDC.HHN. ML:1.1 3.6566105E-5 0.1152 AML other m 2021-07-31T15:29:36.35
IV.SSY.HHE. ML:1.8 0.0001380477 0.7808 AML other m 2021-07-31T15:29:37.91
IV.SSY.HHN. ML:1.9 0.00018463695 0.3456 AML other m 2021-07-31T15:29:39.33
IV.HAGA.HHN. ML:1 2.4411295E-5 0.4992 AML other m 2021-07-31T15:29:39.24
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