Earthquake with magnitude of ML 1.7 on date 20-03-2021 and time 16:32:33 (Italy) in region Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria)

A magnitude ML 1.7 earthquake occured in region: Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria), on

  • 20-03-2021 15:32:33 (UTC)
  • 20-03-2021 16:32:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.901, 15.933 at 5 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
35 Km W of Lamezia Terme (70714 inhabitants)
52 Km SW of Cosenza (67546 inhabitants)
57 Km W of Catanzaro (90612 inhabitants)
85 Km NE of Messina (238439 inhabitants)
91 Km N of Reggio di Calabria (183035 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 1.7 2021-03-20
15:32:33
38.9007 15.9327 5 2021-07-12
16:55:04
Bollettino Sismico Italiano INGV 88743901
Reviewed
Rev100
ML 1.6 2021-03-20
15:32:34
38.8887 15.95 5 2021-03-20
15:45:33
Sala Sismica INGV-Roma 88316921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-20 15:32:33 ± 0.11
Latitude 38.9007 ± 0.0045
Longitude 15.9327 ± 0.0058
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88743901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 564
Semi-minor axis of confidence ellipse (meter) 280
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 131
Circular confidence region, given by single value of horizontal uncertainty (meter) 560
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 154
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.22843
Epicentral distance of station farthest from the epicenter (degree) 0.91551
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 88316921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-20 15:45:33

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 88743901
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-17 10:40:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.TIP.HHZ. 2021-03-20T15:32:57.96 0.6 undecidable manual S 66 0.6988 50 -0.43 42
IV.SERS.HHZ. 2021-03-20T15:32:56.01 0.6 undecidable manual S 77 0.6025 50 0.46 43
IV.PLAC.HHZ. 2021-03-20T15:32:55.16 0.6 undecidable manual S 139 0.5989 50 -0.28 44
IV.SELL.HHZ. 2021-03-20T15:32:53.94 0.6 undecidable manual S 81 0.5468 50 0.05 47
IV.MTTG.HHE. 2021-03-20T15:32:51.84 0.3 undecidable manual P 192 0.9155 50 0.08 65
IV.PIPA.HHZ. 2021-03-20T15:32:51.38 0.6 undecidable manual P 49 0.8993 50 -0.11 43
IV.SOI.EHZ. 2021-03-20T15:32:50.46 0.3 undecidable manual P 173 0.8328 50 0.12 66
MN.TIP.HHZ. 2021-03-20T15:32:48.18 0.3 undecidable manual P 66 0.6988 50 0.12 67
IV.GRI.EHZ. 2021-03-20T15:32:48.94 0.6 undecidable manual S 102 0.3876 97 -0.03 49
IV.MSRU.HHZ. 2021-03-20T15:32:48.70 0.6 negative manual P 208 0.7177 50 0.32 43
IV.CELI.HHZ. 2021-03-20T15:32:47.47 0.6 undecidable manual P 41 0.6718 50 -0.12 45
IV.SICLA.EHE. 2021-03-20T15:32:47.82 0.6 undecidable manual P 195 0.6664 50 0.32 43
MN.CEL.HHZ. 2021-03-20T15:32:46.97 0.6 undecidable manual P 183 0.6412 50 -0.1 46
IV.CET2.HHZ. 2021-03-20T15:32:46.64 0.3 undecidable manual P 2 0.6277 50 -0.2 67
IV.PLAC.HHZ. 2021-03-20T15:32:46.29 0.3 undecidable manual P 139 0.5989 50 -0.07 70
IV.SERS.HHZ. 2021-03-20T15:32:46.37 0.3 undecidable manual P 77 0.6025 50 -0.04 70
IV.SELL.HHZ. 2021-03-20T15:32:45.38 0.3 undecidable manual P 81 0.5468 50 -0.08 70
IV.SPS2.HHZ. 2021-03-20T15:32:44.48 0.3 undecidable manual P 39 0.5009 50 -0.2 69
IV.JOPP.HHZ. 2021-03-20T15:32:44.96 0.6 undecidable manual S 187 0.2959 99 -0.52 45
IV.FERC.HNE. 2021-03-20T15:32:44.60 0.6 undecidable manual P 161 0.473 50 0.41 44
IV.GIZZ.HHZ. 2021-03-20T15:32:42.92 0.3 undecidable manual S 70 0.2284 102 0.02 76
IV.GRI.EHZ. 2021-03-20T15:32:42.55 0.1 negative manual P 102 0.3876 97 -0.06 97
IV.JOPP.HHZ. 2021-03-20T15:32:40.61 0.1 undecidable manual P 187 0.2959 99 0 100
IV.GIZZ.HHZ. 2021-03-20T15:32:39.47 0.3 undecidable manual P 70 0.2284 102 0.35 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.JOPP.HHN. ML:1.6 0.0001905 1.26 AML other m 2021-03-20T15:32:46.25
IV.JOPP.HHE. ML:1.5 0.000145 0.86 AML other m 2021-03-20T15:32:49.91
IV.GRI.EHN. ML:1.7 0.0001534718 0.4608 AML other m 2021-03-20T15:32:49.86
IV.GRI.EHE. ML:1.6 0.00013209935 0.2944 AML other m 2021-03-20T15:32:50.97
IV.SPS2.HHE. ML:1.4 6.095E-5 0.66 AML other m 2021-03-20T15:32:52.54
IV.SPS2.HHN. ML:1.4 6.64E-5 0.88 AML other m 2021-03-20T15:32:54.02
IV.PLAC.HNN. ML:1.9 0.0001425598 0.6272 AML other m 2021-03-20T15:32:58.39
IV.CET2.HHE. ML:2.3 0.0003255 0.7 AML other m 2021-03-20T15:32:58.50
IV.SELL.HHN. ML:1.1 2.25E-5 0.42 AML other m 2021-03-20T15:32:58.08
IV.CET2.HHN. ML:2.4 0.000385 0.3 AML other m 2021-03-20T15:32:58.20
IV.PLAC.HHE. ML:1.8 0.000118945625 0.64 AML other m 2021-03-20T15:32:58.39
IV.MSRU.HHE. ML:1.9 0.00011698585 1.2928 AML other m 2021-03-20T15:32:59.78
IV.MSRU.HHN. ML:1.9 0.00011106045 0.3936 AML other m 2021-03-20T15:32:59.34
IV.SELL.HHE. ML:1.2 3.335E-5 0.96 AML other m 2021-03-20T15:32:59.09
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