Earthquake with magnitude of ML 1.0 on date 27-09-2021 and time 12:39:17 (Italy) in region 5 km S Alcara li Fusi (ME)

A magnitude ML 1.0 earthquake occured in region: 5 km S Alcara li Fusi (ME), on

  • 27-09-2021 10:39:17 (UTC)
  • 27-09-2021 12:39:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.98, 14.719 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 5 1980 1980
Longi ME 6 1473 3453
Galati Mamertino ME 8 2627 6080
Militello Rosmarino ME 8 1324 7404
San Marco d'Alunzio ME 11 1996 9400
Frazzanò ME 11 711 10111
Tortorici ME 11 6435 16546
San Fratello ME 11 3707 20253
San Salvatore di Fitalia ME 11 1319 21572
Mirto ME 12 974 22546
Sant'Agata di Militello ME 13 12624 35170
Torrenova ME 13 4386 39556
Castell'Umberto ME 14 3128 42684
Acquedolci ME 14 5744 48428
Capri Leone ME 14 4515 52943
San Teodoro ME 15 1403 54346
Cesarò ME 15 2439 56785
Maniace CT 15 3765 60550
Ucria ME 16 1058 61608
Sinagra ME 16 2705 64313
Floresta ME 17 485 64798
Naso ME 17 3813 68611
Ficarra ME 18 1469 70080
Raccuja ME 19 1041 71121

Municipalities with at least 50000 inhabitants

An earthquake occurred to
57 Km NW of Acireale (52622 inhabitants)
62 Km NW of Catania (314555 inhabitants)
77 Km W of Messina (238439 inhabitants)
79 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 the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.0 2021-09-27
10:39:17
37.9798 14.7193 27 2021-09-27
10:48:33
Sala Sismica INGV-Roma 95941921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-27 10:39:17 ± 0.39
Latitude 37.9798 ± 0.0144
Longitude 14.7193 ± 0.0183
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 95941921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1671
Semi-minor axis of confidence ellipse (meter) 1102
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 1670
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.29498
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 95941921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-27 10:48:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PLLN.EHZ. 2021-09-27T10:39:33.42 3.0 undecidable manual S -0.18 0
IV.MCPD.HHZ. 2021-09-27T10:39:27.17 0.3 undecidable manual S 4 0.1403 147 0.49 69
IV.MSFR.HHZ. 2021-09-27T10:39:26.32 0.3 undecidable manual S 298 0.1142 152 0.03 75
IV.MUCR.HHZ. 2021-09-27T10:39:26.30 0.3 undecidable manual S 63 0.1376 148 -0.33 71
IV.GALF.HHZ. 2021-09-27T10:39:24.48 0.3 undecidable manual P 204 0.295 125 -0.1 72
IV.EMSG.HHZ. 2021-09-27T10:39:24.16 0.3 undecidable manual P 131 0.241 131 0.31 69
IV.EPZF.HHZ. 2021-09-27T10:39:23.34 0.3 undecidable manual P 145 0.1898 138 0.12 73
IV.MSFR.HHZ. 2021-09-27T10:39:22.41 0.1 undecidable manual P 298 0.1142 152 -0.08 99
IV.MUCR.HHZ. 2021-09-27T10:39:22.46 0.1 undecidable manual P 63 0.1376 148 -0.22 97
IV.MCPD.HHZ. 2021-09-27T10:39:22.70 0.1 undecidable manual P 4 0.1403 147 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MSFR.HHE. ML:0.8 3.455E-5 0.28 AML other m 2021-09-27T10:39:27.27
IV.MCPD.HHE. ML:0.9 3.59E-5 0.28 AML other m 2021-09-27T10:39:27.39
IV.MSFR.HHN. ML:1 4.945E-5 0.28 AML other m 2021-09-27T10:39:27.47
IV.MUCR.HHN. ML:1.4 0.00013465 0.34 AML other m 2021-09-27T10:39:27.62
IV.MUCR.HHE. ML:1.1 6.245E-5 1.64 AML other m 2021-09-27T10:39:28.93
IV.MCPD.HHN. ML:1 4.915E-5 0.5 AML other m 2021-09-27T10:39:28.72
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