Earthquake with magnitude of ML 1.7 on date 05-07-2021 and time 22:57:16 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 1.7 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 05-07-2021 20:57:16 (UTC)
  • 05-07-2021 22:57:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.643, 15.528 at 72 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
50 Km N of Messina (238439 inhabitants)
60 Km N of Reggio di Calabria (183035 inhabitants)
78 Km SW of Lamezia Terme (70714 inhabitants)
96 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 1.7 2021-07-05
20:57:16
38.6433 15.5275 72 2021-07-05
21:22:32
Sala Sismica INGV-Roma 92274151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-05 20:57:16 ± 0.14
Latitude 38.6433 ± 0.0099
Longitude 15.5275 ± 0.0104
Depth (km) 72 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 92274151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1011
Semi-minor axis of confidence ellipse (meter) 629
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 151
Circular confidence region, given by single value of horizontal uncertainty (meter) 1010
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 161
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.80849
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 92274151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-05 21:22:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.AIO.HHE. 2021-07-05T20:57:43.27 1.0 undecidable manual S 199 0.7105 125 0.34 23
IV.MPNC.HHZ. 2021-07-05T20:57:39.66 0.6 undecidable manual S 195 0.5153 135 0.32 47
MN.CEL.HHZ. 2021-07-05T20:57:39.03 0.6 undecidable manual S 143 0.4784 138 0.3 47
IV.IVUG.HHE. 2021-07-05T20:57:38.84 0.3 undecidable manual S 240 0.4901 137 -0.08 74
IV.MSRU.HHZ. 2021-07-05T20:57:37.03 0.3 undecidable manual S 182 0.3795 145 -0.21 75
IV.JOPP.HHZ. 2021-07-05T20:57:36.02 0.3 undecidable manual S 97 0.2824 153 0 79
IV.CET2.HHZ. 2021-07-05T20:57:34.56 3.0 undecidable manual P -0.06 0
IV.CAR1.HHE. 2021-07-05T20:57:32.66 0.3 undecidable manual P 41 0.8085 120 -0.12 70
IV.MUCR.HHE. 2021-07-05T20:57:32.35 0.3 undecidable manual P 221 0.7887 121 -0.19 69
IV.NOV.HHE. 2021-07-05T20:57:31.43 0.1 undecidable manual P 207 0.6871 126 0.06 97
IV.AIO.HHE. 2021-07-05T20:57:31.73 0.3 undecidable manual P 199 0.7105 125 0.1 71
MN.CEL.HHZ. 2021-07-05T20:57:29.08 0.1 undecidable manual P 143 0.4784 138 -0.13 100
IV.IVUG.HHE. 2021-07-05T20:57:29.44 0.1 undecidable manual P 240 0.4901 137 0.12 100
IV.MPNC.HHZ. 2021-07-05T20:57:29.29 0.6 positive manual P 195 0.5153 135 -0.27 48
IV.IVPL.HHE. 2021-07-05T20:57:29.63 0.3 undecidable manual P 238 0.5045 136 0.18 74
IV.JOPP.HHZ. 2021-07-05T20:57:28.02 0.6 positive manual P 97 0.2824 153 0.38 49
IV.MSRU.HHZ. 2021-07-05T20:57:28.15 0.1 negative manual P 182 0.3795 145 -0.2 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.JOPP.HHE. ML:1.1 2.1300685E-5 0.2432 AML other m 2021-07-05T20:57:37.66
IV.JOPP.HHN. ML:1.5 5.0460935E-5 0.1792 AML other m 2021-07-05T20:57:38.18
IV.JOPP.HNN. ML:1.5 4.850397E-5 0.128 AML other m 2021-07-05T20:57:38.94
IV.MSRU.HHE. ML:1.8 8.840575E-5 0.1408 AML other m 2021-07-05T20:57:39.46
IV.MSRU.HHN. ML:1.7 6.910472E-5 0.1408 AML other m 2021-07-05T20:57:39.53
IV.MPNC.HHE. ML:1.9 8.8322385E-5 0.4608 AML other m 2021-07-05T20:57:42.46
IV.MPNC.HHN. ML:1.8 6.457409E-5 0.256 AML other m 2021-07-05T20:57:41.36
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