Earthquake with magnitude of ML 1.9 on date 12-09-2021 and time 04:38:46 (Italy) in region Tirreno Meridionale (MARE)

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

  • 12-09-2021 02:38:46 (UTC)
  • 12-09-2021 04:38:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.809, 15.483 at 101 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
69 Km N of Messina (238439 inhabitants)
75 Km W of Lamezia Terme (70714 inhabitants)
79 Km N of Reggio di Calabria (183035 inhabitants)
86 Km SW of Cosenza (67546 inhabitants)
97 Km W of Catanzaro (90612 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 2021-09-12
02:38:46
38.8092 15.4828 101 2021-09-12
03:27:16
Sala Sismica INGV-Roma 95327621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-12 02:38:46 ± 0.69
Latitude 38.8092 ± 0.0288
Longitude 15.4828 ± 0.0531
Depth (km) 101 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95327621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3996
Semi-minor axis of confidence ellipse (meter) 2473
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 104
Circular confidence region, given by single value of horizontal uncertainty (meter) 4000
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.25455
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 95327621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-12 03:27:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SGG.HHZ. 2021-09-12T02:40:05.87 3.0 undecidable manual Sn -9.99 0
IV.MCRV.HHZ. 2021-09-12T02:39:49.99 3.0 undecidable manual Sn -9.99 0
IV.LPDG.HHZ. 2021-09-12T02:39:48.18 3.0 undecidable manual Pg 13.46 0
IV.CAR1.HHZ. 2021-09-12T02:39:36.88 3.0 undecidable manual Sg 0.42 0
IV.IST3.HHZ. 2021-09-12T02:39:32.77 3.0 undecidable manual Sg -0.86 0
IV.MCRV.HHZ. 2021-09-12T02:39:29.70 3.0 undecidable manual Pg 2.52 0
IV.CDRU.HHZ. 2021-09-12T02:39:24.73 3.0 undecidable manual Pg 1.2 0
IV.PLAC.HHZ. 2021-09-12T02:39:19.43 1.0 undecidable manual S 115 0.8283 133 -0.24 26
IV.GRIS.EHZ. 2021-09-12T02:39:16.04 3.0 negative manual Pg 1.5 0
IV.MSRU.HHZ. 2021-09-12T02:39:14.60 0.6 undecidable manual S 178 0.545 146 -0.67 49
IV.JOPP.HHZ. 2021-09-12T02:39:12.70 1.0 undecidable manual S 123 0.3732 155 -0.55 27
IV.ISTR.HHE. 2021-09-12T02:39:12.89 1.0 undecidable manual S 264 0.2275 165 0.83 24
IV.LADO.EHE. 2021-09-12T02:39:09.98 1.0 undecidable manual P 67 1.2546 121 -0.47 22
IV.PIPA.HHZ. 2021-09-12T02:39:09.75 3.0 positive manual Pn -2.77 0
IV.CELI.HHZ. 2021-09-12T02:39:08.36 3.0 positive manual Pn -2.9 0
IV.SERS.HHZ. 2021-09-12T02:39:07.75 3.0 undecidable manual P -0.71 0
IV.SELL.HHZ. 2021-09-12T02:39:07.56 3.0 negative manual P -0.39 0
IV.PLAC.HHZ. 2021-09-12T02:39:06.34 0.3 undecidable manual P 115 0.8283 133 0.61 71
IV.SOI.EHZ. 2021-09-12T02:39:06.04 0.3 negative manual P 149 0.8607 132 -0.02 81
IV.MTTG.HHZ. 2021-09-12T02:39:05.54 1.0 negative manual P 168 0.8229 134 -0.14 27
IV.AIO.HHE. 2021-09-12T02:39:05.19 0.6 undecidable manual P 193 0.8598 132 -0.86 42
IV.CET2.HHE. 2021-09-12T02:39:05.06 0.1 undecidable manual P 27 0.8067 134 -0.45 100
IV.MSRU.HHZ. 2021-09-12T02:39:03.43 0.3 undecidable manual P 178 0.545 146 0.24 83
IV.GIZZ.HHZ. 2021-09-12T02:39:03.93 3.0 negative manual P -3.63 0
IV.IVPL.HHZ. 2021-09-12T02:39:03.54 3.0 undecidable manual Pn -3.67 0
IV.JOPP.HHZ. 2021-09-12T02:39:03.62 0.6 undecidable manual P 123 0.3732 155 1.6 32
IV.ISTR.HHE. 2021-09-12T02:39:01.59 0.6 undecidable manual P 264 0.2275 165 0.26 59
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.JOPP.HHE. ML:1.7 4.04E-5 1.4 AML other m 2021-09-12T02:39:04.85
IV.PLAC.HNE. ML:2.1 7.72E-5 0.7 AML other m 2021-09-12T02:39:23.39
IV.JOPP.HHN. ML:1.8 5.135E-5 0.62 AML other m 2021-09-12T02:39:36.67
IV.PLAC.HNN. ML:2.1 6.755E-5 0.52 AML other m 2021-09-12T02:39:38.43
IV.GRI.EHE. ML:2.2 9.765E-5 1.66 AML other m 2021-09-12T02:39:38.04
IV.GRI.EHN. ML:2.1 8.05E-5 0.38 AML other m 2021-09-12T02:39:39.78
IV.CAR1.HHN. ML:2.1 7.985E-5 0.42 AML other m 2021-09-12T02:39:39.65
IV.SELL.HHE. ML:1.7 3.21E-5 0.52 AML other m 2021-09-12T02:39:40.09
IV.SELL.HHN. ML:1.9 3.97E-5 1.24 AML other m 2021-09-12T02:39:40.10
IV.CAR1.HHE. ML:1.9 5.74E-5 1.44 AML other m 2021-09-12T02:39:42.93
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