Earthquake with magnitude of ML 1.9 on date 22-02-2021 and time 23:12:42 (Italy) in region Tirreno Meridionale (MARE)

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

  • 22-02-2021 22:12:42 (UTC)
  • 22-02-2021 23:12:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.48, 15.49 at 127 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
32 Km N of Messina (238439 inhabitants)
43 Km N of Reggio di Calabria (183035 inhabitants)
91 Km SW of Lamezia Terme (70714 inhabitants)
100 Km N of Acireale (52622 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.9 2021-02-22
22:12:42
38.48 15.49 127 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 22:12:42 ± 0.23
Latitude 38.48 ± 0.01
Longitude 15.49 ± 0.02
Depth (km) 127 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87390171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1726
Semi-minor axis of confidence ellipse (meter) 1357
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 139
Circular confidence region, given by single value of horizontal uncertainty (meter) 1730
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.21224
Epicentral distance of station farthest from the epicenter (degree) 1.66195
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitude 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
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2021-02-22T22:13:18.27 0.3 undecidable manual S 92 0.7392 145 0.28 72
MN.CEL.HHZ. 2021-02-22T22:13:14.18 0.3 undecidable manual S 124 0.3804 160 0.21 79
IV.JOPP.HHZ. 2021-02-22T22:13:13.74 0.3 undecidable manual S 67 0.3327 162 0.13 81
IV.BULG.HHE. 2021-02-22T22:13:12.26 0.6 undecidable manual P 357 1.6044 121 0.51 34
IV.MSRU.HHZ. 2021-02-22T22:13:12.32 0.6 undecidable manual S 177 0.2122 169 -0.57 50
IV.MGR.HHE. 2021-02-22T22:13:12.50 0.6 undecidable manual P 2 1.6619 120 0.08 37
IV.GRIS.EHE. 2021-02-22T22:13:08.00 0.3 undecidable manual P 12 1.2941 128 -0.22 65
MN.TIP.HHZ. 2021-02-22T22:13:07.20 0.6 negative manual P 54 1.2096 130 -0.1 45
IV.CELI.HHZ. 2021-02-22T22:13:07.56 0.3 undecidable manual P 40 1.2168 130 0.19 66
IV.CET2.HHE. 2021-02-22T22:13:06.15 0.3 undecidable manual P 19 1.1116 132 -0.13 69
IV.SERS.HHZ. 2021-02-22T22:13:06.12 0.6 positive manual P 59 1.0864 133 0.09 46
IV.SPS2.HHZ. 2021-02-22T22:13:05.13 0.3 undecidable manual P 39 1.0468 134 -0.5 64
IV.SELL.HHZ. 2021-02-22T22:13:05.57 0.6 negative manual P 60 1.0189 135 0.21 46
IV.GRI.EHE. 2021-02-22T22:13:03.67 0.6 undecidable manual P 64 0.8013 142 0.31 47
IV.PLAC.HHZ. 2021-02-22T22:13:02.78 0.1 negative manual P 92 0.7392 145 -0.07 100
IV.GIZZ.HHE. 2021-02-22T22:13:02.69 0.6 undecidable manual P 48 0.7509 144 -0.26 48
IV.MTTG.HHZ. 2021-02-22T22:13:01.37 0.6 positive manual P 161 0.4991 155 0.2 51
IV.FERC.HNE. 2021-02-22T22:13:01.38 0.6 undecidable manual P 92 0.4964 155 0.23 51
MN.CEL.HHZ. 2021-02-22T22:13:00.35 0.6 negative manual P 124 0.3804 160 -0.18 53
IV.IVPL.HHE. 2021-02-22T22:13:00.98 0.3 undecidable manual P 256 0.4146 158 0.28 77
IV.JOPP.HHZ. 2021-02-22T22:13:00.19 0.3 undecidable manual P 67 0.3327 162 -0.14 81
IV.MPNC.HHE. 2021-02-22T22:13:00.53 0.6 undecidable manual P 199 0.3471 162 0.15 54
IV.SICLA.EHE. 2021-02-22T22:12:59.71 0.6 undecidable manual P 142 0.2788 165 -0.41 51
IV.MSRU.HHZ. 2021-02-22T22:12:59.82 0.3 undecidable manual P 177 0.2122 169 -0.09 83
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CEL.HHN. ML:1.9 5.165E-5 1.28 AML other m 2021-02-22T22:13:15.65
MN.CEL.HHE. ML:1.9 4.53E-5 1.58 AML other m 2021-02-22T22:13:15.91
IV.JOPP.HHE. ML:2 5.9352925E-5 0.64 AML other m 2021-02-22T22:13:15.33
IV.JOPP.HHN. ML:2 6.482432E-5 0.1408 AML other m 2021-02-22T22:13:14.94
IV.PLAC.HHE. ML:1.8 3.32857E-5 4.6976 AML other m 2021-02-22T22:13:20.80
IV.PLAC.HHN. ML:1.8 3.1692555E-5 0.4352 AML other m 2021-02-22T22:13:18.73
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download