Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 30-03-2021 and time 22:54:34 (Italy) in region Tirreno Meridionale (MARE)

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

  • 30-03-2021 20:54:34 (UTC)
  • 30-03-2021 22:54:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.7540, 15.6100 at 161 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.

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Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
62 Km N of Messina (238439 inhabitants)
66 Km W of Lamezia Terme (70714 inhabitants)
72 Km N of Reggio di Calabria (183035 inhabitants)
82 Km SW of Cosenza (67546 inhabitants)
87 Km W of Catanzaro (90612 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 1.9 2021-03-30
20:54:34		 38.754 15.6102 161 2021-07-12
16:55:16		 Bollettino Sismico Italiano INGV 91792371
Reviewed
Rev100 		ML 2.0 2021-03-30
20:54:33		 38.7855 15.5292 162 2021-03-30
21:21:29		 Sala Sismica INGV-Roma 88625781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-30 20:54:34 ± 0.33
Latitude 38.7540 ± 0.0225
Longitude 15.6102 ± 0.0323
Depth (km) 161 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91792371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3385
Semi-minor axis of confidence ellipse (meter) 1023
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 128
Circular confidence region, given by single value of horizontal uncertainty (meter) 3380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.07469
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 91792371
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-28 09:08:17

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 88625781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-30 21:21:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTRJ.HNZ. 2021-03-30T20:56:10.89 3.0 undecidable manual Sg -0.33 0
IV.CESX.HHZ. 2021-03-30T20:55:56.81 3.0 undecidable manual Pg 10.69 0
IV.RM33.HNZ. 2021-03-30T20:55:52.41 3.0 undecidable manual Pg 10.61 0
IV.CRTC.HHZ. 2021-03-30T20:55:50.72 3.0 positive manual Pn -6.9 0
IV.PTRJ.HNZ. 2021-03-30T20:55:29.65 3.0 undecidable manual Pg 6.21 0
IV.VAGA.HHZ. 2021-03-30T20:55:22.49 3.0 undecidable manual Pn -2.72 0
IV.CELI.HHZ. 2021-03-30T20:55:19.96 0.6 undecidable manual S 47 105.7164 145 1.07 33
IV.SELL.HHZ. 2021-03-30T20:55:18.22 0.6 undecidable manual S 74 91.5417 148 1.02 35
IV.SERS.HHZ. 2021-03-30T20:55:18.16 0.6 undecidable manual S 71 98.2239 147 0.18 46
IV.CET2.HHZ. 2021-03-30T20:55:16.70 0.6 undecidable manual S 19 90.9423 149 -0.43 44
IV.SPS2.HHE. 2021-03-30T20:55:16.65 0.6 undecidable manual S 46 86.5467 150 -0.01 49
IV.PLAC.HHZ. 2021-03-30T20:55:15.63 0.6 undecidable manual S 115 79.365 152 -0.27 47
IV.MILZ.HHE. 2021-03-30T20:55:14.43 0.6 undecidable manual S 212 62.7927 157 0.05 50
IV.FERC.HNE. 2021-03-30T20:55:14.30 1.0 undecidable manual S 127 55.9995 160 0.47 23
IV.MSRU.HHZ. 2021-03-30T20:55:13.40 0.6 undecidable manual S 189 55.1004 160 -0.37 48
IV.JOPP.HHZ. 2021-03-30T20:55:12.00 0.6 undecidable manual S 124 28.9488 169 -0.25 51
IV.NOCI.HHZ. 2021-03-30T20:55:11.59 3.0 negative manual Pn -1.45 0
IV.MSFR.HHZ. 2021-03-30T20:55:01.68 0.3 undecidable manual P 228 119.2917 141 0.62 59
IV.CELI.HHZ. 2021-03-30T20:55:00.52 0.3 undecidable manual P 47 105.7164 145 0.49 63
IV.AIO.HHE. 2021-03-30T20:55:00.07 0.3 undecidable manual P 201 92.8404 148 0.93 54
IV.NOV.HHZ. 2021-03-30T20:54:59.37 0.3 undecidable manual P 207 90.4428 149 0.38 67
IV.SELL.HHZ. 2021-03-30T20:54:59.05 0.3 undecidable manual P 74 91.5417 148 -0.01 72
IV.SERS.HHZ. 2021-03-30T20:54:59.28 0.3 undecidable manual P 71 98.2239 147 -0.23 68
IV.CET2.HHZ. 2021-03-30T20:54:58.81 0.1 undecidable manual P 19 90.9423 149 -0.21 92
IV.SPS2.HHE. 2021-03-30T20:54:58.63 0.3 undecidable manual P 46 86.5467 150 -0.11 71
IV.GRI.EHN. 2021-03-30T20:54:57.75 0.3 undecidable manual P 84 70.4739 155 -0.06 74
IV.IVPL.HNE. 2021-03-30T20:54:57.87 0.3 undecidable manual P 233 68.8755 155 0.14 73
IV.PLAC.HHZ. 2021-03-30T20:54:57.89 0.1 undecidable manual P 115 79.365 152 -0.42 90
IV.FERC.HNE. 2021-03-30T20:54:57.29 0.6 undecidable manual P 127 55.9995 160 0.18 50
IV.MILZ.HHE. 2021-03-30T20:54:56.88 0.3 undecidable manual P 212 62.7927 157 -0.54 67
IV.MSRU.HHZ. 2021-03-30T20:54:56.53 0.3 undecidable manual P 189 55.1004 160 -0.54 68
IV.JOPP.HHZ. 2021-03-30T20:54:55.83 0.1 negative manual P 124 28.9488 169 -0.37 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.JOPP.HHN. ML:2.0 0.000044200000000000004 1.06 AML other m 2021-03-30T20:55:12.45
IV.MSRU.HHE. ML:1.6 0.0000158058815 0.4736 AML other m 2021-03-30T20:55:13.91
IV.MSRU.HHN. ML:1.9 0.00003513596 1.5136 AML other m 2021-03-30T20:55:14.76
IV.JOPP.HHE. ML:1.9 0.000033100000000000005 1.2 AML other m 2021-03-30T20:55:14.16
IV.PLAC.HHE. ML:2.1 0.000046649999999999996 0.34 AML other m 2021-03-30T20:55:16.73
IV.PLAC.HHN. ML:1.9 0.00003195 0.92 AML other m 2021-03-30T20:55:16.62
IV.CET2.HHE. ML:2.2 0.00006185 1 AML other m 2021-03-30T20:55:17.76
IV.CET2.HHN. ML:2.4 0.0000839 0.16 AML other m 2021-03-30T20:55:17.81
IV.SERS.HHN. ML:1.6 0.00001415 0.76 AML other m 2021-03-30T20:55:19.50
IV.SERS.HHE. ML:1.6 0.000016250000000000002 1.58 AML other m 2021-03-30T20:55:19.90
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
Waveforms Seismic signals in miniseed + resp format Download