Earthquake with magnitude of ML 1.5 on date 30-10-2021 and time 06:33:50 (Italy) in region 4 km E Librizzi (ME)

A magnitude ML 1.5 earthquake occured in region: 4 km E Librizzi (ME), on

  • 30-10-2021 04:33:50 (UTC)
  • 30-10-2021 06:33:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.111, 15.005 at 7 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
Librizzi ME 4 1660 1660
Patti ME 5 13431 15091
Oliveri ME 5 2181 17272
Montagnareale ME 6 1615 18887
Falcone ME 7 2808 21695
Basicò ME 7 612 22307
San Piero Patti ME 7 2915 25222
Montalbano Elicona ME 10 2287 27509
Raccuja ME 10 1041 28550
Furnari ME 11 3784 32334
Sant'Angelo di Brolo ME 11 3090 35424
Tripi ME 11 873 36297
Mazzarrà Sant'Andrea ME 12 1531 37828
Gioiosa Marea ME 12 7074 44902
Ucria ME 13 1058 45960
Piraino ME 14 3962 49922
Sinagra ME 14 2705 52627
Terme Vigliatore ME 14 7395 60022
Rodì Milici ME 15 2056 62078
Novara di Sicilia ME 15 1337 63415
Ficarra ME 16 1469 64884
Floresta ME 16 485 65369
Brolo ME 16 5783 71152
Castell'Umberto ME 18 3128 74280
Tortorici ME 18 6435 80715
Castroreale ME 18 2504 83219
Naso ME 19 3813 87032
Barcellona Pozzo di Gotto ME 19 41583 128615
Roccella Valdemone ME 20 666 129281

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km W of Messina (238439 inhabitants)
56 Km W of Reggio di Calabria (183035 inhabitants)
57 Km N of Acireale (52622 inhabitants)
68 Km N of Catania (314555 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 1.5 2021-10-30
04:33:50
38.1108 15.005 7 2021-10-30
04:39:13
Sala Sismica INGV-Roma 97077821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-30 04:33:50 ± 0.26
Latitude 38.1108 ± 0.0261
Longitude 15.0050 ± 0.0069
Depth (km) 7 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97077821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2591
Semi-minor axis of confidence ellipse (meter) 1303
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 184
Circular confidence region, given by single value of horizontal uncertainty (meter) 2590
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 185
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.12321
Epicentral distance of station farthest from the epicenter (degree) 0.33455
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 5
Type of magnitude ML
Reference to an origin 97077821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-30 04:39:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MSFR.HHZ. 2021-10-30T04:34:04.52 0.3 undecidable manual S 257 0.3345 101 0.42 66
IV.AIO.HHZ. 2021-10-30T04:34:00.58 0.3 undecidable manual S 128 0.2275 106 0.48 67
IV.MSFR.HHZ. 2021-10-30T04:33:58.35 0.1 undecidable manual P 257 0.3345 101 -0.21 92
IV.MPNC.HHE. 2021-10-30T04:33:57.58 0.3 undecidable manual P 82 0.2761 103 0.29 69
IV.NOV.HHZ. 2021-10-30T04:33:56.59 0.1 undecidable manual S 129 0.1331 116 -0.09 98
IV.AIO.HHZ. 2021-10-30T04:33:56.01 0.1 positive manual P 128 0.2275 106 -0.24 94
IV.MUCR.HHZ. 2021-10-30T04:33:56.37 0.1 undecidable manual S 237 0.1232 117 0.01 100
IV.NOV.HHZ. 2021-10-30T04:33:54.08 0.1 undecidable manual P 129 0.1331 116 -0.2 96
IV.MUCR.HHZ. 2021-10-30T04:33:53.94 0.3 negative manual P 237 0.1232 117 -0.15 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MUCR.HHE. ML:1.3 0.000224 0.36 AML other m 2021-10-30T04:33:56.45
IV.NOV.HHN. ML:1.8 0.0006755 0.16 AML other m 2021-10-30T04:33:56.71
IV.MUCR.HHN. ML:1.4 0.0002635 0.3 AML other m 2021-10-30T04:33:57.16
IV.NOV.HHE. ML:1.8 0.0007245 0.26 AML other m 2021-10-30T04:33:57.29
IV.AIO.HHN. ML:1.2 9.8826275E-5 0.2016 AML other m 2021-10-30T04:34:00.00
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