Earthquake with magnitude of ML 1.8 on date 20-03-2021 and time 08:21:16 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 1.8 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 20-03-2021 07:21:16 (UTC)
  • 20-03-2021 08:21:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.028, 15.414 at 241 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
79 Km W of Cosenza (67546 inhabitants)
79 Km W of Lamezia Terme (70714 inhabitants)
93 Km N of Messina (238439 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 1.8 2021-03-20
07:21:16
39.028 15.4138 241 2021-07-12
16:55:07
Bollettino Sismico Italiano INGV 89364001
Reviewed
Rev100
ML 1.8 2021-03-20
07:21:16
39.0235 15.3948 241 2021-03-20
08:02:10
Sala Sismica INGV-Roma 88304711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-20 07:21:16 ± 0.26
Latitude 39.0280 ± 0.0234
Longitude 15.4138 ± 0.0359
Depth (km) 241 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89364001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3584
Semi-minor axis of confidence ellipse (meter) 1352
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 126
Circular confidence region, given by single value of horizontal uncertainty (meter) 3580
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.55848
Epicentral distance of station farthest from the epicenter (degree) 1.17721
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 89364001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-17 10:05:05

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 88304711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-20 08:02:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.TIP.HHE. 2021-03-20T07:22:17.18 0.6 undecidable manual S 81 1.054 153 0.42 45
IV.CELI.HHE. 2021-03-20T07:22:15.76 0.6 undecidable manual S 66 0.9272 156 0.31 47
IV.SERS.HHE. 2021-03-20T07:22:15.90 0.6 undecidable manual S 89 0.9893 154 -0.18 47
IV.SPS2.HHE. 2021-03-20T07:22:14.10 0.6 undecidable manual S 70 0.7635 160 0.13 51
MN.CEL.HHZ. 2021-03-20T07:22:14.30 0.6 undecidable manual S 154 0.8535 158 -0.46 46
IV.MSRU.HHE. 2021-03-20T07:22:14.20 0.6 undecidable manual S 174 0.7671 160 0.19 50
IV.CET2.HHE. 2021-03-20T07:22:13.20 0.6 undecidable manual S 40 0.652 163 0.09 52
IV.JOPP.HHZ. 2021-03-20T07:22:12.20 0.6 undecidable manual S 139 0.5585 165 -0.29 51
IV.NOV.HHE. 2021-03-20T07:21:51.24 0.6 undecidable manual P 192 1.0225 154 0.31 46
IV.MTTG.HHE. 2021-03-20T07:21:51.36 0.3 undecidable manual P 168 1.0486 153 0.27 69
IV.PIPA.HHE. 2021-03-20T07:21:51.70 0.3 undecidable manual P 67 1.1772 150 -0.23 67
IV.AIO.HHE. 2021-03-20T07:21:51.99 0.3 undecidable manual P 188 1.0657 153 0.79 58
IV.SOI.EHE. 2021-03-20T07:21:51.20 0.6 undecidable manual P 152 1.0774 152 -0.08 48
IV.MUCR.HHE. 2021-03-20T07:21:51.78 0.6 undecidable manual P 203 1.0711 153 0.55 43
IV.SERS.HHE. 2021-03-20T07:21:50.63 0.1 undecidable manual P 89 0.9893 154 -0.1 97
IV.FERC.HNE. 2021-03-20T07:21:50.10 0.6 undecidable manual P 136 0.8004 159 0.4 47
MN.TIP.HHE. 2021-03-20T07:21:50.87 0.1 undecidable manual P 81 1.054 153 -0.25 92
IV.TDS.HHE. 2021-03-20T07:21:50.56 0.6 undecidable manual P 48 0.9533 155 0.04 49
IV.SPS2.HHE. 2021-03-20T07:21:50.03 0.6 undecidable manual P 70 0.7635 160 0.51 46
IV.CELI.HHE. 2021-03-20T07:21:50.84 0.1 undecidable manual P 66 0.9272 156 0.47 90
IV.SELL.HHE. 2021-03-20T07:21:50.45 0.3 undecidable manual P 92 0.9443 155 -0.01 74
IV.GRI.EHE. 2021-03-20T07:21:49.90 0.6 undecidable manual P 104 0.8085 159 0.16 50
IV.IFIL.HHE. 2021-03-20T07:21:49.30 0.3 undecidable manual P 235 0.8013 159 -0.4 71
IV.IVPL.HHE. 2021-03-20T07:21:49.81 0.6 undecidable manual P 208 0.7338 161 0.43 48
IV.SICLA.EHE. 2021-03-20T07:21:49.44 0.6 undecidable manual P 163 0.8058 159 -0.28 48
IV.GRIS.EHE. 2021-03-20T07:21:49.36 0.6 undecidable manual P 25 0.7887 159 -0.28 49
MN.CEL.HHZ. 2021-03-20T07:21:49.49 0.3 undecidable manual P 154 0.8535 158 -0.48 69
IV.MSRU.HHE. 2021-03-20T07:21:49.24 0.3 undecidable manual P 174 0.7671 160 -0.29 73
IV.JOPP.HHZ. 2021-03-20T07:21:48.28 0.1 negative manual P 139 0.5585 165 -0.38 100
IV.CET2.HHE. 2021-03-20T07:21:48.66 0.3 undecidable manual P 40 0.652 163 -0.36 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.JOPP.HHE. ML:1.7 8.409207E-6 0.1824 AML other m 2021-03-20T07:22:12.37
IV.JOPP.HHN. ML:1.9 1.59545715E-5 0.2816 AML other m 2021-03-20T07:22:12.65
MN.CEL.HHN. ML:1.9 1.312712E-5 0.2784 AML other m 2021-03-20T07:22:17.04
MN.CEL.HHE. ML:1.8 1.19527007E-5 0.2784 AML other m 2021-03-20T07:22:18.96
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