Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 22-02-2021 and time 23:12:41 (Italy) in region Tirreno Meridionale (MARE)

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

  • 22-02-2021 22:12:41 (UTC)
  • 22-02-2021 23:12:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.4680, 15.4730 at 130 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
31 Km N of Messina (238439 inhabitants)
43 Km NW of Reggio di Calabria (183035 inhabitants)
93 Km SW of Lamezia Terme (70714 inhabitants)
99 Km N of Acireale (52622 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 2021-02-22
22:12:41		 38.468 15.4728 130 2021-07-12
16:55:11		 Bollettino Sismico Italiano INGV 90130591
Reviewed
Rev100 		ML 1.9 2021-02-22
22:12:42		 38.4757 15.4942 127 2021-02-22
22:23:23		 Sala Sismica INGV-Roma 87390171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-22 22:12:41 ± 0.2
Latitude 38.4680 ± 0.0126
Longitude 15.4728 ± 0.0172
Depth (km) 130 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90130591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1671
Semi-minor axis of confidence ellipse (meter) 768
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 134
Circular confidence region, given by single value of horizontal uncertainty (meter) 1670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.20594
Epicentral distance of station farthest from the epicenter (degree) 1.67004
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:1.9

Field Value
Value 1.9
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 87390171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-22 22:23:23

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 90130591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-15 16:03:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.TIP.HHZ. 2021-02-22T22:13:26.54 0.3 undecidable manual S 54 136.2636 130 0.45 64
IV.CELI.HHZ. 2021-02-22T22:13:26.49 0.6 undecidable manual S 40 136.863 130 0.3 44
IV.SERS.HHZ. 2021-02-22T22:13:24.32 0.3 undecidable manual S 59 122.5884 133 0.44 66
IV.CET2.HHE. 2021-02-22T22:13:23.57 0.6 undecidable manual S 19 124.7862 133 -0.66 40
IV.SPS2.HHZ. 2021-02-22T22:13:23.53 0.6 undecidable manual S 39 117.993 134 0.36 45
IV.SELL.HHZ. 2021-02-22T22:13:23.25 0.6 undecidable manual S 60 115.0959 135 0.52 44
IV.GIZZ.HHE. 2021-02-22T22:13:18.15 0.3 undecidable manual S 48 85.248 144 -0.39 71
IV.PLAC.HHZ. 2021-02-22T22:13:18.27 0.3 undecidable manual S 91 83.8494 144 -0.09 76
IV.MTTG.HHZ. 2021-02-22T22:13:15.17 0.6 undecidable manual S 159 55.2003 155 -0.07 54
IV.FERC.HNE. 2021-02-22T22:13:15.99 0.3 undecidable manual S 92 56.8986 154 0.59 71
MN.CEL.HHZ. 2021-02-22T22:13:14.18 0.3 undecidable manual S 122 43.2234 160 -0.08 83
IV.JOPP.HHZ. 2021-02-22T22:13:13.74 0.3 undecidable manual S 67 39.0276 162 -0.22 81
IV.MILZ.HHN. 2021-02-22T22:13:13.75 0.3 undecidable manual S 224 30.2475 166 0.31 80
IV.SICLA.EHE. 2021-02-22T22:13:13.07 0.6 undecidable manual S 138 31.5462 165 -0.43 52
IV.MSRU.HHZ. 2021-02-22T22:13:12.61 0.6 undecidable manual S 172 22.8549 169 -0.48 53
IV.BULG.HHE. 2021-02-22T22:13:12.26 0.6 undecidable manual P 357 178.7877 122 0.54 35
IV.MGR.HHE. 2021-02-22T22:13:12.50 0.6 undecidable manual P 2 185.37 121 0.09 37
IV.GRIS.EHE. 2021-02-22T22:13:08.00 0.3 undecidable manual P 13 144.9438 128 -0.25 65
MN.TIP.HHZ. 2021-02-22T22:13:07.20 0.1 negative manual P 54 136.2636 130 -0.22 89
IV.CELI.HHZ. 2021-02-22T22:13:07.56 0.3 undecidable manual P 40 136.863 130 0.08 68
IV.SERS.HHZ. 2021-02-22T22:13:06.04 0.3 undecidable manual P 59 122.5884 133 -0.11 70
IV.CET2.HHE. 2021-02-22T22:13:06.15 0.3 undecidable manual P 19 124.7862 133 -0.2 69
IV.SPS2.HHZ. 2021-02-22T22:13:05.22 0.6 undecidable manual P 39 117.993 134 -0.51 43
IV.SELL.HHZ. 2021-02-22T22:13:05.57 0.1 negative manual P 60 115.0959 135 0.09 95
IV.GRI.EHE. 2021-02-22T22:13:03.67 0.6 undecidable manual P 64 90.9423 142 0.18 49
IV.PLAC.HHZ. 2021-02-22T22:13:02.78 0.1 negative manual P 91 83.8494 144 -0.18 100
IV.GIZZ.HHE. 2021-02-22T22:13:02.69 0.6 undecidable manual P 48 85.248 144 -0.37 48
IV.MTTG.HHZ. 2021-02-22T22:13:01.37 0.3 undecidable manual P 159 55.2003 155 0.21 78
IV.NOV.HHZ. 2021-02-22T22:13:01.95 0.6 undecidable manual P 211 56.8986 154 0.7 44
IV.FERC.HNE. 2021-02-22T22:13:01.38 0.6 undecidable manual P 92 56.8986 154 0.14 53
IV.MILZ.HHN. 2021-02-22T22:13:00.53 0.6 undecidable manual P 224 30.2475 166 0.42 52
IV.MPNC.HHE. 2021-02-22T22:13:00.53 0.6 undecidable manual P 196 37.1295 163 0.19 54
IV.JOPP.HHZ. 2021-02-22T22:13:00.19 0.3 undecidable manual P 67 39.0276 162 -0.23 81
IV.IVPL.HHE. 2021-02-22T22:13:00.98 0.3 undecidable manual P 257 44.0226 160 0.36 77
MN.CEL.HHZ. 2021-02-22T22:13:00.32 0.3 undecidable manual P 122 43.2234 160 -0.27 80
IV.SICLA.EHE. 2021-02-22T22:12:59.72 0.3 undecidable manual P 138 31.5462 165 -0.43 79
IV.MSRU.HHZ. 2021-02-22T22:12:59.64 0.6 undecidable manual P 172 22.8549 169 -0.27 55
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CEL.HHN. ML:1.9 0.00005165 1.28 AML other m 2021-02-22T22:13:15.65
IV.JOPP.HHE. ML:2.0 0.000059352925 0.64 AML other m 2021-02-22T22:13:15.33
IV.JOPP.HHN. ML:2.0 0.00006482432000000001 1.8592 AML other m 2021-02-22T22:13:15.94
MN.CEL.HHE. ML:1.9 0.0000453 1.58 AML other m 2021-02-22T22:13:15.91
IV.PLAC.HHE. ML:1.9 0.0000332857 0.6976 AML other m 2021-02-22T22:13:18.80
IV.PLAC.HHN. ML:1.8 0.000031692555 0.4352 AML other m 2021-02-22T22:13:18.73
IV.SPS2.HHE. ML:1.1 0.0000052190003 0.2432 AML other m 2021-02-22T22:13:26.52
IV.SPS2.HHN. ML:1.1 0.000006015118500000001 0.192 AML other m 2021-02-22T22:13:24.92
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