Earthquake with magnitude of ML 1.4 on date 23-09-2021 and time 13:33:08 (Italy) in region 2 km SE Alcara li Fusi (ME)

A magnitude ML 1.4 earthquake occured in region: 2 km SE Alcara li Fusi (ME), on

  • 23-09-2021 11:33:08 (UTC)
  • 23-09-2021 13:33:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.012, 14.714 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
Alcara li Fusi ME 2 1980 1980
Longi ME 4 1473 3453
Militello Rosmarino ME 5 1324 4777
Galati Mamertino ME 6 2627 7404
San Marco d'Alunzio ME 7 1996 9400
Frazzanò ME 7 711 10111
San Salvatore di Fitalia ME 9 1319 11430
Mirto ME 9 974 12404
Torrenova ME 10 4386 16790
Sant'Agata di Militello ME 10 12624 29414
Tortorici ME 10 6435 35849
San Fratello ME 10 3707 39556
Capri Leone ME 11 4515 44071
Castell'Umberto ME 12 3128 47199
Acquedolci ME 12 5744 52943
Naso ME 14 3813 56756
Sinagra ME 14 2705 59461
Ficarra ME 15 1469 60930
Ucria ME 15 1058 61988
Capo d'Orlando ME 17 13254 75242
Floresta ME 17 485 75727
Raccuja ME 18 1041 76768
San Teodoro ME 18 1403 78171
Maniace CT 19 3765 81936
Cesarò ME 19 2439 84375
Sant'Angelo di Brolo ME 19 3090 87465
Brolo ME 19 5783 93248

Municipalities with at least 50000 inhabitants

An earthquake occurred to
60 Km NW of Acireale (52622 inhabitants)
65 Km NW of Catania (314555 inhabitants)
77 Km W of Messina (238439 inhabitants)
81 Km NE of Caltanissetta (63360 inhabitants)
82 Km W of Reggio di Calabria (183035 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 1.4 2021-09-23
11:33:08
38.0117 14.7138 27 2021-09-23
11:43:48
Sala Sismica INGV-Roma 95782951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-23 11:33:08 ± 0.25
Latitude 38.0117 ± 0.0099
Longitude 14.7138 ± 0.0114
Depth (km) 27 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95782951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1096
Semi-minor axis of confidence ellipse (meter) 584
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 190
Circular confidence region, given by single value of horizontal uncertainty (meter) 1100
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.09893
Epicentral distance of station farthest from the epicenter (degree) 0.41099
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 95782951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-23 11:43:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.AIO.HHZ. 2021-09-23T11:33:23.89 0.3 undecidable manual S 95 0.411 115 0.03 72
IV.EPZF.HHZ. 2021-09-23T11:33:19.54 0.3 undecidable manual S 149 0.2185 133 0.44 69
IV.AIO.HHZ. 2021-09-23T11:33:17.08 0.1 undecidable manual P 95 0.411 115 -0.2 92
IV.MSFR.HHZ. 2021-09-23T11:33:16.85 0.3 undecidable manual S 283 0.0989 156 -0.15 75
IV.MUCR.HHZ. 2021-09-23T11:33:16.98 0.3 undecidable manual S 76 0.1295 149 -0.45 69
IV.NOV.HHZ. 2021-09-23T11:33:16.08 0.1 undecidable manual P 87 0.3336 120 -0.02 97
IV.EMSG.HHZ. 2021-09-23T11:33:15.54 0.3 undecidable manual P 136 0.2662 127 0.39 69
IV.GALF.HNZ. 2021-09-23T11:33:15.53 0.3 undecidable manual P 201 0.322 121 -0.41 68
IV.EPZF.HHZ. 2021-09-23T11:33:14.36 0.3 undecidable manual P 149 0.2185 133 -0.17 73
IV.MCPD.HHZ. 2021-09-23T11:33:13.79 0.1 undecidable manual P 7 0.1088 153 0.4 94
IV.MSFR.HHZ. 2021-09-23T11:33:13.44 0.1 undecidable manual P 283 0.0989 156 0.13 100
IV.MUCR.HHZ. 2021-09-23T11:33:13.48 0.1 undecidable manual P 76 0.1295 149 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MUCR.HHE. ML:1.3 9.99E-5 1.24 AML other m 2021-09-23T11:33:17.09
IV.MUCR.HHN. ML:1.3 0.000102 0.5 AML other m 2021-09-23T11:33:18.66
IV.EPZF.HHE. ML:1.6 0.000165 1.12 AML other m 2021-09-23T11:33:20.94
IV.EPZF.HHN. ML:1.8 0.00023 0.34 AML other m 2021-09-23T11:33:22.74
IV.MSFR.HHE. ML:1.2 7.7364185E-5 0.3392 AML other m 2021-09-23T11:33:18.24
IV.MSFR.HHN. ML:1.2 8.5806315E-5 0.2432 AML other m 2021-09-23T11:33:18.45
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