Earthquake with magnitude of ML 1.9 on date 20-08-2021 and time 03:39:40 (Italy) in region Tirreno Meridionale (MARE)

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

  • 20-08-2021 01:39:40 (UTC)
  • 20-08-2021 03:39:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.918, 15.299 at 18 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
84 Km N of Messina (238439 inhabitants)
89 Km W of Lamezia Terme (70714 inhabitants)
93 Km W of Cosenza (67546 inhabitants)
95 Km NW 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 1.9 2021-08-20
01:39:40
38.9182 15.2992 18 2021-12-29
11:12:33
Bollettino Sismico Italiano INGV 96053751
Reviewed
Rev100
ML 1.9 2021-08-20
01:39:41
38.9068 15.3213 15 2021-08-20
01:52:38
Sala Sismica INGV-Roma 94394131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-20 01:39:40 ± 0.1
Latitude 38.9182 ± 0.0063
Longitude 15.2992 ± 0.0081
Depth (km) 18 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96053751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 726
Semi-minor axis of confidence ellipse (meter) 257
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 310
Circular confidence region, given by single value of horizontal uncertainty (meter) 730
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 50
Number of defining phases 45
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.33729
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 33
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 96053751
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-04 17:08:44

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 94394131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-20 01:52:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATFO.HHZ. 2021-08-20T01:41:12.34 3.0 positive manual Pg 16.200001 0
IV.CROCE.HHZ. 2021-08-20T01:40:46.36 3.0 undecidable manual Sg -1.37 0
IV.GAVE.EHZ. 2021-08-20T01:40:45.11 3.0 undecidable manual Pn -1.31 0
IV.RCAV.EHZ. 2021-08-20T01:40:38.73 3.0 undecidable manual Pn 2.55 0
IV.TDS.HHZ. 2021-08-20T01:40:17.25 0.6 undecidable manual S 47 1.0936 93 1.68 21
IV.CMDO.HHZ. 2021-08-20T01:40:16.61 3.0 negative manual Pg 1.99 0
IV.MTTG.HHE. 2021-08-20T01:40:11.38 0.6 undecidable manual S 161 0.9668 94 -0.45 39
IV.GRIS.HNE. 2021-08-20T01:40:10.25 0.6 undecidable manual S 27 0.9272 94 -0.4 39
IV.MCPD.HHE. 2021-08-20T01:40:10.13 0.6 undecidable manual S 209 0.9128 94 -0.12 42
IV.CET2.HHZ. 2021-08-20T01:40:06.82 0.6 undecidable manual S 40 0.7941 95 0.1 43
IV.SIRI.HNE. 2021-08-20T01:40:04.39 0.3 undecidable manual P 19 1.3373 93 -0.6 50
IV.GIZZ.HHZ. 2021-08-20T01:40:04.11 0.6 undecidable manual S 85 0.7087 96 -0.11 44
IV.PIPA.HHZ. 2021-08-20T01:40:04.98 0.3 undecidable manual P 64 1.304 93 0.56 52
IV.IFIL.HHN. 2021-08-20T01:40:03.65 0.6 undecidable manual S 238 0.6655 96 0.7 37
IV.MSRU.HHZ. 2021-08-20T01:40:02.70 0.6 undecidable manual S 166 0.6736 96 -0.49 41
IV.MGR.HHZ. 2021-08-20T01:40:01.83 0.3 undecidable manual P 9 1.2348 93 -1.4 35
IV.TDS.HHZ. 2021-08-20T01:40:01.94 0.3 undecidable manual P 47 1.0936 93 1.12 43
IV.IVUG.HHZ. 2021-08-20T01:40:01.61 0.6 undecidable manual S 205 0.5765 97 1.3 29
MN.TIP.HHN. 2021-08-20T01:40:01.63 0.3 undecidable manual P 77 1.1619 93 -0.37 56
IV.SERS.HHZ. 2021-08-20T01:40:00.40 0.3 undecidable manual P 83 1.0855 94 -0.3 58
MN.CUC.HHE. 2021-08-20T01:40:00.87 0.3 undecidable manual P 20 1.1466 93 -0.86 47
IV.CELI.HHZ. 2021-08-20T01:40:00.11 0.3 undecidable manual P 62 1.0549 94 -0.06 61
IV.ECTS.HHZ. 2021-08-20T01:39:59.29 0.3 undecidable manual P 188 1.045 94 -0.7 52
IV.MSFR.HHZ. 2021-08-20T01:39:59.82 0.3 undecidable manual P 212 1.0423 94 -0.14 61
IV.SELL.HHZ. 2021-08-20T01:39:59.63 0.3 undecidable manual P 86 1.0351 94 -0.19 60
IV.JOPP.HHZ. 2021-08-20T01:39:59.76 0.3 undecidable manual S 124 0.5531 98 0.13 67
IV.PLAC.HHE. 2021-08-20T01:39:59.10 0.3 undecidable manual P 117 1.0045 94 -0.21 60
IV.MUCR.HHE. 2021-08-20T01:39:58.04 0.3 undecidable manual P 201 0.9353 94 -0.09 63
IV.GRIS.HNE. 2021-08-20T01:39:58.05 0.3 undecidable manual P 27 0.9272 94 0.07 64
IV.MTTG.HHE. 2021-08-20T01:39:58.80 0.6 undecidable manual P 161 0.9668 94 0.14 41
IV.AIO.HHE. 2021-08-20T01:39:57.88 0.3 undecidable manual P 183 0.9479 94 -0.46 58
IV.GRI.EHN. 2021-08-20T01:39:57.16 0.3 undecidable manual P 96 0.8777 94 0.02 65
IV.SPS2.HHZ. 2021-08-20T01:39:57.42 0.3 undecidable manual P 65 0.8885 94 0.1 64
IV.MCPD.HHE. 2021-08-20T01:39:57.75 0.3 undecidable manual P 209 0.9128 94 0 64
IV.FERC.HNN. 2021-08-20T01:39:56.96 0.3 undecidable manual P 125 0.7968 95 1.2 44
IV.CET2.HHZ. 2021-08-20T01:39:56.30 0.3 undecidable manual P 40 0.7941 95 0.59 58
IV.NOV.HHZ. 2021-08-20T01:39:56.90 0.3 undecidable manual P 188 0.8984 94 -0.6 56
IV.IACL.HHE. 2021-08-20T01:39:56.60 0.3 undecidable manual P 243 0.831 95 0.26 62
IV.MPNC.HHZ. 2021-08-20T01:39:55.02 0.3 undecidable manual P 177 0.7725 95 -0.33 62
IV.CAR1.HHZ. 2021-08-20T01:39:55.55 0.3 undecidable manual P 64 0.7833 95 0.02 66
IV.GIZZ.HHZ. 2021-08-20T01:39:54.35 0.3 undecidable manual P 85 0.7087 96 0.08 66
IV.IVPL.HHZ. 2021-08-20T01:39:53.04 0.3 undecidable manual P 205 0.5963 97 0.69 57
IV.IFIL.HHN. 2021-08-20T01:39:53.64 0.3 undecidable manual P 238 0.6655 96 0.1 66
IV.MSRU.HHZ. 2021-08-20T01:39:53.69 0.3 undecidable manual P 166 0.6736 96 0.02 67
IV.IVUG.HHZ. 2021-08-20T01:39:52.72 0.3 undecidable manual P 205 0.5765 97 0.71 57
IV.JOPP.HHZ. 2021-08-20T01:39:51.90 0.1 undecidable manual P 124 0.5531 98 0.28 87
IV.ISTR.HHZ. 2021-08-20T01:39:47.84 0.3 undecidable manual S 212 0.1556 127 -0.61 67
IV.IST3.HNZ. 2021-08-20T01:39:47.62 0.6 undecidable manual S 204 0.1304 133 -0.25 49
IV.ISTR.HHZ. 2021-08-20T01:39:45.14 0.3 undecidable manual P 212 0.1556 127 -0.02 75
IV.IST3.HNZ. 2021-08-20T01:39:44.82 0.1 negative manual P 204 0.1304 133 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.IST3.HHE. ML:2.6 0.00312 0.14 AML other m 2021-08-20T01:39:47.89
IV.IST3.HNE. ML:2.6 0.002565 0.14 AML other m 2021-08-20T01:39:47.97
IV.IST3.HNN. ML:2.6 0.002685 0.14 AML other m 2021-08-20T01:39:49.84
IV.IST3.HHN. ML:2.7 0.003605 0.16 AML other m 2021-08-20T01:39:49.84
IV.JOPP.HNE. ML:1.8 0.00012585 1.04 AML other m 2021-08-20T01:40:00.06
IV.JOPP.HHN. ML:1.8 0.0001165 0.94 AML other m 2021-08-20T01:40:00.65
IV.JOPP.HNN. ML:1.8 0.00011305 0.96 AML other m 2021-08-20T01:40:00.18
IV.JOPP.HHE. ML:1.4 5.0E-5 0.16 AML other m 2021-08-20T01:40:02.03
IV.MSRU.HHN. ML:2.1 0.0001725 0.16 AML other m 2021-08-20T01:40:04.81
IV.MSRU.HHE. ML:2 0.0001585 0.16 AML other m 2021-08-20T01:40:04.88
IV.CET2.HHE. ML:1.9 8.65E-5 1.2 AML other m 2021-08-20T01:40:07.14
IV.CAR1.HHN. ML:1.9 8.9E-5 1.34 AML other m 2021-08-20T01:40:08.04
IV.MPNC.HHE. ML:2 0.000134 0.46 AML other m 2021-08-20T01:40:09.32
IV.CET2.HHN. ML:2.1 0.0001485 0.9 AML other m 2021-08-20T01:40:09.80
IV.CAR1.HHE. ML:1.7 6.165E-5 0.36 AML other m 2021-08-20T01:40:10.09
IV.MPNC.HHN. ML:2 0.00011485 0.32 AML other m 2021-08-20T01:40:11.55
IV.SPS2.HHN. ML:1.6 3.535E-5 0.26 AML other m 2021-08-20T01:40:13.47
IV.SPS2.HHE. ML:1.4 2.525E-5 1.06 AML other m 2021-08-20T01:40:13.98
IV.SERS.HHE. ML:1.4 1.76E-5 0.68 AML other m 2021-08-20T01:40:18.71
IV.SERS.HHN. ML:1.3 1.735E-5 1.4 AML other m 2021-08-20T01:40:20.91
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