Earthquake with magnitude of ML 1.1 on date 17-10-2021 and time 12:31:40 (Italy) in region 3 km E Santo Stefano in Aspromonte (RC)

A magnitude ML 1.1 earthquake occured in region: 3 km E Santo Stefano in Aspromonte (RC), on

  • 17-10-2021 10:31:40 (UTC)
  • 17-10-2021 12:31:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.162, 15.827 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
Santo Stefano in Aspromonte RC 3 1263 1263
Sant'Alessio in Aspromonte RC 6 343 1606
Laganadi RC 8 413 2019
Calanna RC 9 934 2953
San Roberto RC 10 1750 4703
Cardeto RC 10 1641 6344
Sant'Eufemia d'Aspromonte RC 12 4120 10464
Delianuova RC 12 3352 13816
Sinopoli RC 12 2089 15905
Fiumara RC 13 1018 16923
Scido RC 13 931 17854
Bagnara Calabra RC 14 10255 28109
Scilla RC 14 4964 33073
Roccaforte del Greco RC 14 476 33549
San Procopio RC 15 534 34083
Bagaladi RC 15 1039 35122
Cosoleto RC 16 859 35981
Campo Calabro RC 16 4536 40517
Santa Cristina d'Aspromonte RC 16 929 41446
MelicuccĂ  RC 16 930 42376
San Lorenzo RC 17 2640 45016
Reggio di Calabria RC 17 183035 228051
Condofuri RC 18 5113 233164
Villa San Giovanni RC 18 13784 246948
Seminara RC 20 2811 249759

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km E of Reggio di Calabria (183035 inhabitants)
24 Km E of Messina (238439 inhabitants)
84 Km NE of Acireale (52622 inhabitants)
98 Km NE of Catania (314555 inhabitants)
100 Km SW of Lamezia Terme (70714 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 2021-10-17
10:31:40
38.1623 15.8272 10 2021-10-17
10:40:04
Sala Sismica INGV-Roma 96678451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-17 10:31:40 ± 0.15
Latitude 38.1623 ± 0.0180
Longitude 15.8272 ± 0.0103
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96678451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2086
Semi-minor axis of confidence ellipse (meter) 505
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 158
Circular confidence region, given by single value of horizontal uncertainty (meter) 2090
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.69787
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 96678451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-17 10:40:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
OT.OT17.EHZ. 2021-10-17T10:33:24.76 3.0 undecidable manual Sg 7.35 0
IV.IMOL.HNZ. 2021-10-17T10:33:22.90 3.0 positive manual Pn 1.51 0
IV.OFFI.HHZ. 2021-10-17T10:33:08.52 3.0 undecidable manual Pg 12.88 0
IV.APEC.HHZ. 2021-10-17T10:33:07.79 3.0 undecidable manual Pn -0.74 0
IV.ASSB.HHZ. 2021-10-17T10:33:00.65 3.0 undecidable manual Pn -0.49 0
IX.RSF3.HHZ.02 2021-10-17T10:32:56.32 3.0 undecidable manual Sn -4.11 0
IV.RNI2.HHZ. 2021-10-17T10:32:46.12 3.0 positive manual Pg 7.98 0
IX.SCL3.EHZ.02 2021-10-17T10:32:21.72 3.0 positive manual Pn 0.34 0
IV.GRIS.EHZ. 2021-10-17T10:32:12.55 3.0 undecidable manual P 4.41 0
IV.HVIT.HHZ. 2021-10-17T10:32:07.76 3.0 undecidable manual P -0.21 0
IV.JOPP.HHZ. 2021-10-17T10:31:56.52 0.6 undecidable manual S 6 0.447 50 -0.19 47
IV.IVPL.HHZ. 2021-10-17T10:31:54.55 0.6 undecidable manual P 288 0.6979 50 0.3 44
IV.FERC.HHZ.00 2021-10-17T10:31:54.70 0.6 undecidable manual S 39 0.3741 50 0.13 49
IV.MPNC.HHZ. 2021-10-17T10:31:54.32 0.3 undecidable manual S 268 0.3732 50 -0.21 72
IV.PLAC.HHE. 2021-10-17T10:31:52.29 0.3 undecidable manual P 59 0.5585 50 0.42 66
IV.JOPP.HHZ. 2021-10-17T10:31:49.68 0.3 undecidable manual P 6 0.447 50 -0.27 70
IV.MPNC.HHZ. 2021-10-17T10:31:48.68 0.3 undecidable manual P 268 0.3732 50 -0.01 75
IV.MTTG.HHZ. 2021-10-17T10:31:48.51 0.3 undecidable manual S 212 0.188 115 -0.17 75
IV.FERC.HHZ.00 2021-10-17T10:31:48.61 0.3 undecidable manual P 39 0.3741 50 -0.1 74
IV.SOI.EHZ. 2021-10-17T10:31:48.69 0.3 undecidable manual S 116 0.1996 114 -0.4 71
IV.SOI.EHZ. 2021-10-17T10:31:45.72 0.1 undecidable manual P 116 0.1996 114 0.17 100
IV.MTTG.HHZ. 2021-10-17T10:31:45.59 0.1 undecidable manual P 212 0.188 115 0.28 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTTG.HHE. ML:0.8 4.9505775E-5 0.32 AML other m 2021-10-17T10:31:51.14
IV.SOI.EHE. ML:0.9 5.465E-5 0.5 AML other m 2021-10-17T10:31:49.34
IV.SOI.EHN. ML:0.9 5.533168E-5 0.32 AML other m 2021-10-17T10:31:49.96
IV.MTTG.HHN. ML:1 6.5578485E-5 0.16 AML other m 2021-10-17T10:31:50.34
IV.MPNC.HHN. ML:1.6 0.000124 0.38 AML other m 2021-10-17T10:31:54.98
IV.MPNC.HHE. ML:1.6 0.00013321479 0.416 AML other m 2021-10-17T10:31:56.24
IV.JOPP.HNE. ML:1.3 5.433993E-5 0.8896 AML other m 2021-10-17T10:31:55.50
IV.JOPP.HNN. ML:1 2.372877E-5 0.0192 AML other m 2021-10-17T10:31:58.17
IV.JOPP.HHE. ML:0.9 1.80985605E-5 0.3008 AML other m 2021-10-17T10:31:59.81
IV.JOPP.HHN. ML:1.1 2.88444E-5 0.2176 AML other m 2021-10-17T10:31:58.98
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