Earthquake with magnitude of ML 1.7 on date 21-10-2019 and time 13:20:58 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 1.7 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 21-10-2019 11:20:58 (UTC)
  • 21-10-2019 13:20:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.55, 15.48 at 137 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
40 Km N of Messina (238439 inhabitants)
51 Km N of Reggio di Calabria (183035 inhabitants)
87 Km SW of Lamezia Terme (70714 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
Rev 100 ML 1.7 2019-10-21
11:20:58
38.55 15.48 137 2019-10-21
11:29:48
Sala Sismica INGV-Roma 73374281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-21 11:20:58 ± 0.32
Latitude 38.55 ± 0.07
Longitude 15.48 ± 0.04
Depth (km) 137 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73374281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 8358
Semi-minor axis of confidence ellipse (meter) 2263
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 165
Circular confidence region, given by single value of horizontal uncertainty (meter) 8360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 284
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.65381
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 73374281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-21 11:29:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.IMOL.HNZ. 2019-10-21T11:22:55.89 3.0 undecidable manual Pg 18.530001 0
IV.RIBO.EHZ.01 2019-10-21T11:22:34.25 3.0 positive manual Pg 9.67 0
IV.ARVD.HHZ. 2019-10-21T11:22:29.18 3.0 negative manual Pg 7.37 0
IV.FDMO.HHZ. 2019-10-21T11:22:26.13 3.0 negative manual Pg 10.71 0
CR.STON.BHZ. 2019-10-21T11:22:25.82 3.0 positive manual Pg 12.53 0
IV.NARO.HHZ. 2019-10-21T11:22:20.56 3.0 undecidable manual Pn -4.03 0
IV.MAON.HHZ. 2019-10-21T11:22:16.46 3.0 undecidable manual Pn -2.07 0
IX.STN3.HHZ.02 2019-10-21T11:22:12.58 3.0 undecidable manual Sg 8.75 0
IV.VIVA.HHZ. 2019-10-21T11:22:06.00 3.0 negative manual Pg 4.8 0
IV.VBKN.HHZ. 2019-10-21T11:22:04.13 3.0 undecidable manual Sn -9.25 0
IX.STN3.HHZ.02 2019-10-21T11:21:37.22 3.0 positive manual Pn -0.14 0
IV.NOV.HHZ. 2019-10-21T11:21:34.09 0.1 undecidable manual S 208 0.59 152 0.25 92
IV.SOI.EHZ. 2019-10-21T11:21:34.65 0.6 undecidable manual S 137 0.6538 150 0.06 47
IV.AIO.HHZ. 2019-10-21T11:21:33.52 0.6 undecidable manual S 199 0.6124 152 -0.58 42
IV.IFIL.HHZ. 2019-10-21T11:21:32.49 3.0 undecidable manual Sg 0.08 0
MN.CEL.HHZ. 2019-10-21T11:21:32.30 0.1 undecidable manual S 132 0.4326 159 0 100
IV.CMDO.HHZ. 2019-10-21T11:21:30.88 3.0 negative manual Pg 0.68 0
MN.TIP.HHZ. 2019-10-21T11:21:26.18 3.0 negative manual P -0.75 0
IV.PLAC.HHZ. 2019-10-21T11:21:21.33 3.0 negative manual P 0.07 0
IV.SOI.EHZ. 2019-10-21T11:21:19.31 0.1 undecidable manual P 137 0.6538 150 0.11 94
IV.AIO.HHZ. 2019-10-21T11:21:18.83 0.6 undecidable manual P 199 0.6124 152 -0.09 47
IV.MTTG.HHZ. 2019-10-21T11:21:18.67 0.1 undecidable manual P 163 0.5729 153 0 97
IV.NOV.HHZ. 2019-10-21T11:21:18.85 0.1 undecidable manual P 208 0.59 152 0.08 96
MN.CEL.HHZ. 2019-10-21T11:21:18.01 0.6 undecidable manual P 132 0.4326 159 0.13 49
IV.SICLA.EHZ. 2019-10-21T11:21:17.20 0.3 undecidable manual P 148 0.3453 163 -0.29 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CEL.HNE. ML:1.9 4.026781E-5 1.8176 AML other m 2019-10-21T11:21:34.16
MN.CEL.HNN. ML:2.1 6.2620551E-5 0.896 AML other m 2019-10-21T11:21:34.01
MN.CEL.HHE. ML:1.6 1.8834805E-5 0.8192 AML other m 2019-10-21T11:21:32.85
MN.CEL.HHN. ML:1.7 2.8291565E-5 0.3648 AML other m 2019-10-21T11:21:34.19
IV.SOI.EHE. ML:1.5 1.6935194E-5 2.0864 AML other m 2019-10-21T11:21:34.95
IV.SOI.EHN. ML:1.6 1.8730385E-5 0.8768 AML other m 2019-10-21T11:21:36.23
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