Earthquake with magnitude of ML 1.9 on date 21-10-2020 and time 21:44:26 (UTC) in region Tirreno Meridionale (MARE)

A magnitude ML 1.9 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 21-10-2020 21:44:26 (UTC)
  • 21-10-2020 23:44:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.99, 15.62 at 180 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
61 Km W of Lamezia Terme (70714 inhabitants)
65 Km SW of Cosenza (67546 inhabitants)
85 Km W of Catanzaro (90612 inhabitants)
89 Km N of Messina (238439 inhabitants)
98 Km N of Reggio di Calabria (183035 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 1.9 2020-10-21
21:44:26
38.99 15.62 180 2020-10-21
22:00:55
Sala Sismica INGV-Roma 84004611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-21 21:44:26 ± 0.38
Latitude 38.99 ± 0.02
Longitude 15.62 ± 0.05
Depth (km) 180 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84004611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4664
Semi-minor axis of confidence ellipse (meter) 1216
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 93
Circular confidence region, given by single value of horizontal uncertainty (meter) 4660
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 211
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 17
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
Epicentral distance of station farthest from the epicenter (degree) 1.05131
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 84004611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-21 22:00:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
RF.GEPF.HHZ. 2020-10-21T21:46:26.13 3.0 positive manual Pn 23.48 0
IV.TERO.HHZ. 2020-10-21T21:46:21.59 3.0 undecidable manual Sn 4.11 0
IV.RM33.HNZ. 2020-10-21T21:46:20.24 3.0 undecidable manual Sn 0.76 0
IV.HPAC.HHZ. 2020-10-21T21:45:54.27 3.0 undecidable manual Sg 0.37 0
IV.RMP.HHZ. 2020-10-21T21:45:38.04 3.0 positive manual Pg 17.879999 0
IV.MTGR.HHZ. 2020-10-21T21:45:16.27 3.0 positive manual Pg 2.34 0
IV.SERS.HHE. 2020-10-21T21:45:13.08 0.6 undecidable manual S 87 0.8337 151 0.16 61
IV.PLAC.HHZ. 2020-10-21T21:45:13.88 0.6 undecidable manual S 130 0.8391 151 0.9 49
IV.GRIS.EHE. 2020-10-21T21:45:12.44 0.6 undecidable manual S 14 0.7707 153 0.22 61
MN.CEL.HHE. 2020-10-21T21:45:11.68 0.6 undecidable manual S 163 0.7617 153 -0.44 58
IV.CET2.HHZ. 2020-10-21T21:45:10.25 0.6 undecidable manual S 26 0.598 159 -0.28 63
IV.JOPP.HHZ. 2020-10-21T21:45:09.38 0.6 undecidable manual S 151 0.438 164 0.08 68
IV.CAR1.HHZ. 2020-10-21T21:45:09.64 0.6 undecidable manual S 60 0.5306 161 -0.33 63
IV.PIPA.HHZ. 2020-10-21T21:44:53.82 0.3 undecidable manual P 62 1.0513 145 -0.96 68
IV.SERS.HHE. 2020-10-21T21:44:53.11 0.3 undecidable manual P 87 0.8337 151 -0.08 93
IV.CELI.HHE. 2020-10-21T21:44:53.65 0.3 undecidable manual P 59 0.804 152 0.65 80
IV.PLAC.HHZ. 2020-10-21T21:44:53.20 0.3 undecidable manual P 130 0.8391 151 -0.03 94
MN.TIP.HNZ. 2020-10-21T21:44:53.55 0.3 undecidable manual P 78 0.9056 149 -0.14 91
IV.GRIS.EHE. 2020-10-21T21:44:52.99 0.3 undecidable manual P 14 0.7707 153 0.2 91
MN.CEL.HHE. 2020-10-21T21:44:52.69 0.3 undecidable manual P 163 0.7617 153 -0.05 95
IV.CET2.HHZ. 2020-10-21T21:44:51.94 0.3 undecidable manual P 26 0.598 159 0.13 96
IV.JOPP.HHZ. 2020-10-21T21:44:51.23 0.3 undecidable manual P 151 0.438 164 0.12 100
IV.CAR1.HHZ. 2020-10-21T21:44:51.32 0.3 undecidable manual P 60 0.5306 161 -0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.JOPP.HHE. ML:1.9 2.714104E-5 0.128 AML other m 2020-10-21T21:45:11.01
IV.JOPP.HHN. ML:1.8 2.04874E-5 0.1024 AML other m 2020-10-21T21:45:10.61
IV.CAR1.HHE. ML:1.8 1.91248E-5 0.4224 AML other m 2020-10-21T21:45:10.44
IV.CET2.HHN. ML:2.2 4.979751E-5 0.2176 AML other m 2020-10-21T21:45:11.08
IV.PLAC.HHE. ML:1.8 2.173737E-5 0.2176 AML other m 2020-10-21T21:45:14.11
IV.PLAC.HHN. ML:1.7 1.3984955E-5 0.2432 AML other m 2020-10-21T21:45:13.93
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download