Earthquake with magnitude of ML 1.2 on date 17-09-2021 and time 20:44:56 (Italy) in region Costa Siciliana nord orientale (Messina)

A magnitude ML 1.2 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 17-09-2021 18:44:56 (UTC)
  • 17-09-2021 20:44:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.219, 15.216 at 10 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
Milazzo ME 2 31646 31646
Merì ME 6 2338 33984
San Filippo del Mela ME 7 7115 41099
Barcellona Pozzo di Gotto ME 8 41583 82682
Pace del Mela ME 9 6239 88921
Terme Vigliatore ME 10 7395 96316
Santa Lucia del Mela ME 11 4650 100966
Condrò ME 11 493 101459
Gualtieri Sicaminò ME 11 1807 103266
Torregrotta ME 12 7431 110697
Rodì Milici ME 13 2056 112753
Venetico ME 13 3911 116664
Castroreale ME 13 2504 119168
San Pier Niceto ME 14 2837 122005
Valdina ME 14 1355 123360
Spadafora ME 14 5021 128381
Roccavaldina ME 15 1133 129514
Furnari ME 15 3784 133298
Mazzarrà Sant'Andrea ME 16 1531 134829
Monforte San Giorgio ME 16 2777 137606
Falcone ME 16 2808 140414
Oliveri ME 17 2181 142595
Rometta ME 18 6650 149245
Villafranca Tirrena ME 19 8584 157829
Saponara ME 19 3988 161817

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km W of Messina (238439 inhabitants)
39 Km W of Reggio di Calabria (183035 inhabitants)
68 Km N of Acireale (52622 inhabitants)
80 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 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 1.2 2021-09-17
18:44:56
38.2193 15.216 10 2021-09-17
18:54:55
Sala Sismica INGV-Roma 95553171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-17 18:44:56 ± 0.78
Latitude 38.2193 ± 0.0297
Longitude 15.2160 ± 0.0515
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95553171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 5070
Semi-minor axis of confidence ellipse (meter) 2320
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 5070
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 287
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.5243
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.5
Num. used stations 6
Type of magnitude ML
Reference to an origin 95553171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-17 18:54:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MSFR.HHE. 2021-09-17T18:45:07.03 0.1 undecidable manual P 250 0.5243 50 0.13 100
IV.EMSG.HHZ. 2021-09-17T18:45:06.27 0.6 negative manual P 208 0.4497 50 0.65 44
IV.AIO.HHZ. 2021-09-17T18:45:06.13 0.3 undecidable manual S 177 0.2482 50 -0.29 77
IV.NOV.HHZ. 2021-09-17T18:45:05.32 0.6 undecidable manual S 198 0.2014 114 0.46 50
IV.MPNC.HHZ. 2021-09-17T18:45:04.20 3.0 undecidable manual P 0
IV.AIO.HHZ. 2021-09-17T18:45:02.62 0.3 negative manual P 177 0.2482 50 0.44 74
IV.MUCR.HHZ. 2021-09-17T18:45:02.84 0.6 negative manual P 237 0.322 50 -0.58 47
IV.NOV.HHZ. 2021-09-17T18:45:00.80 0.1 positive manual P 198 0.2014 114 -0.47 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NOV.HHE. ML:2.2 0.0010475 1.66 AML other m 2021-09-17T18:45:07.92
IV.NOV.HHN. ML:2.1 0.0008995 1.72 AML other m 2021-09-17T18:45:07.97
IV.MUCR.HHE. ML:1 4.1E-5 0.66 AML other m 2021-09-17T18:45:10.20
IV.MUCR.HHN. ML:1.2 6.98E-5 0.3 AML other m 2021-09-17T18:45:10.22
IV.AIO.HHE. ML:0.9 4.155E-5 0.62 AML other m 2021-09-17T18:45:10.91
IV.AIO.HHN. ML:1 5.195E-5 0.62 AML other m 2021-09-17T18:45:11.39
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