Sala Sismica

Earthquake with magnitude of ML 1.9 on date 20-09-2018 and time 02:56:42 (Italy) in region Tirreno Meridionale (MARE)

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

  • 20-09-2018 00:56:42 (UTC)
  • 20-09-2018 02:56:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.51, 15.39 at 131 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
38 Km NW of Messina (238439 inhabitants)
49 Km NW of Reggio di Calabria (183035 inhabitants)
96 Km SW of Lamezia Terme (70714 inhabitants)
Recent and historical Seismicity
Seismic hazard
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 ( 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 1.9 2018-09-20
38.51 15.39 131 2018-09-20
Sala Sismica INGV-Roma 61126341
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2018-09-20 00:56:42 ± 0.27
Latitude 38.51 ± 0.02
Longitude 15.39 ± 0.03
Depth (km) 131 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 61126341


Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2702
Semi-minor axis of confidence ellipse (meter) 844
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 121
Circular confidence region, given by single value of horizontal uncertainty (meter) 2700
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 223
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.259
Epicentral distance of station farthest from the epicenter (degree) 1.13944
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information


Field Value
Value 1.9
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 61126341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-20 01:02:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SERS.HHZ. 2018-09-20T00:57:25.58 0.6 undecidable manual S 62 1.1394 133 0.17 41
IV.CET2.HHZ. 2018-09-20T00:57:25.24 0.3 undecidable manual S 23 1.1107 133 0.33 60
IV.CAR1.HHZ. 2018-09-20T00:57:22.19 0.6 undecidable manual S 40 0.9803 137 -0.53 40
MN.CEL.HHZ. 2018-09-20T00:57:15.73 0.6 undecidable manual S 122 0.4632 157 -0.15 48
IV.MNO.SHZ. 2018-09-20T00:57:15.82 0.1 undecidable manual P 0.795 1.167 0
IV.JOPP.HHZ. 2018-09-20T00:57:15.31 0.6 undecidable manual S 75 0.3975 160 0.01 50
IV.MSRU.HHZ. 2018-09-20T00:57:14.40 0.6 undecidable manual S 160 0.259 167 0.06 51
IV.CET2.HHZ. 2018-09-20T00:57:07.15 0.1 undecidable manual P 23 1.1107 133 0.09 84
IV.SERS.HHZ. 2018-09-20T00:57:07.31 0.6 undecidable manual P 62 1.1394 133 -0.04 42
IV.SPS2.HHZ. 2018-09-20T00:57:06.61 0.6 negative manual P 43 1.0747 134 -0.09 43
IV.CAR1.HHZ. 2018-09-20T00:57:05.53 0.6 positive manual P 40 0.9803 137 -0.26 42
MN.CEL.HHZ. 2018-09-20T00:57:02.31 0.6 positive manual P 122 0.4632 157 0.46 45
IV.MTTG.HHZ. 2018-09-20T00:57:02.67 0.6 undecidable manual P 154 0.5576 153 0.26 46
IV.JOPP.HHZ. 2018-09-20T00:57:01.38 0.1 undecidable manual P 75 0.3975 160 -0.13 98
IV.MSRU.HHZ. 2018-09-20T00:57:00.82 0.1 undecidable manual P 160 0.259 167 -0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CEL.HNN. ML:2.2 9.435E-5 1.58 AML other m 2018-09-20T00:57:09.80
IV.MSRU.HHE. ML:2 6.08E-5 0.4 AML other m 2018-09-20T00:57:14.86
IV.MSRU.HHN. ML:1.8 4.16E-5 0.38 AML other m 2018-09-20T00:57:14.78
MN.CEL.HHN. ML:1.7 3.215E-5 1.76 AML other m 2018-09-20T00:57:15.91
IV.JOPP.HHE. ML:1.8 3.625E-5 0.6 AML other m 2018-09-20T00:57:15.66
IV.JOPP.HHN. ML:1.9 5.065E-5 0.16 AML other m 2018-09-20T00:57:16.19
MN.CEL.HHE. ML:1.7 3.105E-5 1.3 AML other m 2018-09-20T00:57:17.34
MN.CEL.HNE. ML:2.1 7.45E-5 0.72 AML other m 2018-09-20T00:57:22.78
IV.MNO.SHN. ML:0 6.4E-5 0.88 AML other m 2018-09-20T00:57:23.44
IV.CET2.HHE. ML:1.8 2.57E-5 1.06 AML other m 2018-09-20T00:57:26.34
IV.CET2.HHN. ML:2.2 5.69E-5 0.48 AML other m 2018-09-20T00:57:26.75
IV.MNO.SHE. ML:0 4.905E-5 0.56 AML other m 2018-09-20T00:57:41.56
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download