Earthquake with magnitude of ML 1.1 on date 20-09-2021 and time 01:02:37 (Italy) in region Costa Siciliana nord orientale (Messina)

A magnitude ML 1.1 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 19-09-2021 23:02:37 (UTC)
  • 20-09-2021 01:02:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.171, 15.1 at 14 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
Falcone ME 6 2808 2808
Oliveri ME 6 2181 4989
Terme Vigliatore ME 7 7395 12384
Furnari ME 8 3784 16168
Rodì Milici ME 9 2056 18224
Mazzarrà Sant'Andrea ME 10 1531 19755
Barcellona Pozzo di Gotto ME 11 41583 61338
Patti ME 12 13431 74769
Basicò ME 13 612 75381
Castroreale ME 13 2504 77885
Merì ME 13 2338 80223
Tripi ME 13 873 81096
Milazzo ME 14 31646 112742
Montagnareale ME 14 1615 114357
Librizzi ME 15 1660 116017
San Filippo del Mela ME 15 7115 123132
Santa Lucia del Mela ME 16 4650 127782
Novara di Sicilia ME 17 1337 129119
San Piero Patti ME 18 2915 132034
Montalbano Elicona ME 18 2287 134321
Gioiosa Marea ME 18 7074 141395
Pace del Mela ME 18 6239 147634
Gualtieri Sicaminò ME 19 1807 149441
Condrò ME 20 493 149934

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km W of Messina (238439 inhabitants)
48 Km W of Reggio di Calabria (183035 inhabitants)
62 Km N of Acireale (52622 inhabitants)
74 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 1.1 2021-09-19
23:02:37
38.1712 15.0998 14 2021-09-19
23:09:27
Sala Sismica INGV-Roma 95643791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-19 23:02:37 ± 0.05
Latitude 38.1712 ± 0.0018
Longitude 15.0998 ± 0.0023
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95643791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 227
Semi-minor axis of confidence ellipse (meter) 94
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 339
Circular confidence region, given by single value of horizontal uncertainty (meter) 230
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.14389
Epicentral distance of station farthest from the epicenter (degree) 0.33365
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 95643791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-19 23:09:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MSRU.HHZ. 2021-09-19T23:02:49.36 0.6 undecidable manual S 74 0.3336 97 -0.14 48
IV.IVPL.HHZ. 2021-09-19T23:02:46.34 0.3 undecidable manual S 335 0.2257 103 0 74
IV.AIO.HHE. 2021-09-19T23:02:46.46 0.3 undecidable manual S 152 0.2257 103 0.12 73
IV.MUCR.HHZ. 2021-09-19T23:02:45.95 0.3 undecidable manual S 234 0.2194 104 -0.2 71
IV.MPNC.HHZ. 2021-09-19T23:02:45.47 0.3 undecidable manual S 97 0.2005 106 -0.15 73
IV.MILZ.HHZ. 2021-09-19T23:02:44.09 0.1 undecidable manual S 46 0.1439 117 0.04 100
IV.NOV.HHZ. 2021-09-19T23:02:44.10 0.1 undecidable manual S 169 0.1466 117 -0.02 100
IV.MSRU.HHZ. 2021-09-19T23:02:44.17 0.3 undecidable manual P 74 0.3336 97 -0.09 72
IV.MPNC.HHZ. 2021-09-19T23:02:42.11 0.1 undecidable manual P 97 0.2005 106 0.09 98
IV.AIO.HHE. 2021-09-19T23:02:42.50 0.3 undecidable manual P 152 0.2257 103 0.06 74
IV.MUCR.HHZ. 2021-09-19T23:02:42.38 0.3 undecidable manual P 234 0.2194 104 0.05 74
IV.IVPL.HHZ. 2021-09-19T23:02:42.55 0.3 undecidable manual P 335 0.2257 103 0.11 73
IV.MILZ.HHZ. 2021-09-19T23:02:41.16 0.6 negative manual P 46 0.1439 117 0.04 50
IV.NOV.HHZ. 2021-09-19T23:02:41.13 0.3 undecidable manual P 169 0.1466 117 -0.02 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MSRU.HHN. ML:1 4.13E-5 0.76 AML other m 2021-09-19T23:02:53.48
IV.MSRU.HHE. ML:1.2 5.465E-5 0.42 AML other m 2021-09-19T23:02:57.70
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