Earthquake with magnitude of ML 1.5 on date 03-07-2021 and time 22:22:03 (Italy) in region 5 km SE Troina (EN)

A magnitude ML 1.5 earthquake occured in region: 5 km SE Troina (EN), on

  • 03-07-2021 20:22:03 (UTC)
  • 03-07-2021 22:22:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.747, 14.638 at 23 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Troina EN 5 9373 9373
Gagliano Castelferrato EN 10 3593 12966
Regalbuto EN 10 7277 20243
San Teodoro ME 13 1403 21646
CesarĂ² ME 13 2439 24085
Cerami EN 14 2006 26091
Agira EN 14 8345 34436
Centuripe EN 17 5470 39906
Bronte CT 18 19172 59078
Capizzi ME 18 3176 62254
Nissoria EN 19 3000 65254
Adrano CT 20 36122 101376
Maniace CT 20 3765 105141

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km NW of Catania (314555 inhabitants)
49 Km W of Acireale (52622 inhabitants)
58 Km NE of Caltanissetta (63360 inhabitants)
83 Km NE of Gela (75827 inhabitants)
89 Km N of Vittoria (63339 inhabitants)
92 Km N of Ragusa (73313 inhabitants)
95 Km SW of Messina (238439 inhabitants)
96 Km NW of Siracusa (122291 inhabitants)
97 Km W of Reggio di Calabria (183035 inhabitants)
99 Km N of Modica (54633 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 1.5 2021-07-03
20:22:03
37.7468 14.6378 23 2021-07-03
20:32:52
Sala Sismica INGV-Roma 92205411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-03 20:22:03 ± 0.21
Latitude 37.7468 ± 0.0072
Longitude 14.6378 ± 0.0148
Depth (km) 23 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 92205411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1335
Semi-minor axis of confidence ellipse (meter) 178
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 251
Circular confidence region, given by single value of horizontal uncertainty (meter) 1330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.68259
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 92205411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-03 20:32:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.CLTB.HHZ. 2021-07-03T20:22:40.51 3.0 undecidable manual S 0.27 0
IV.HAVL.HHZ. 2021-07-03T20:22:33.23 3.0 undecidable manual S 0.08 0
IV.HCRL.HHZ. 2021-07-03T20:22:23.27 0.6 undecidable manual S 146 0.5594 103 0.2 47
IV.HAVL.HHZ. 2021-07-03T20:22:20.03 3.0 negative manual P -0.08 0
IV.HLNI.HHZ. 2021-07-03T20:22:20.13 0.6 undecidable manual S 155 0.4389 107 0.49 45
IV.MCPD.HHZ. 2021-07-03T20:22:18.18 0.3 undecidable manual S 11 0.3804 111 0.2 73
IV.HMDC.HHZ. 2021-07-03T20:22:18.35 3.0 negative manual P -0.68 0
IV.MUCR.HHZ. 2021-07-03T20:22:16.62 0.6 undecidable manual S 32 0.3498 113 -0.53 46
IV.SSY.HHZ. 2021-07-03T20:22:16.66 0.6 positive manual P 149 0.6826 100 -0.29 45
IV.RAFF.HHZ. 2021-07-03T20:22:15.24 0.6 positive manual P 203 0.5675 103 0.22 47
IV.MSFR.HHZ. 2021-07-03T20:22:15.87 0.6 undecidable manual S 353 0.2896 118 0.34 48
IV.HCRL.HHZ. 2021-07-03T20:22:14.64 0.3 undecidable manual P 146 0.5594 103 -0.24 70
IV.EPZF.HHZ. 2021-07-03T20:22:13.64 0.6 undecidable manual S 66 0.1898 131 0.56 46
IV.HLNI.HHZ. 2021-07-03T20:22:12.53 0.6 negative manual P 155 0.4389 107 -0.37 46
IV.ESCV.HHZ. 2021-07-03T20:22:11.68 0.6 undecidable manual S 90 0.1403 141 -0.39 50
IV.MUCR.HHZ. 2021-07-03T20:22:11.36 0.1 undecidable manual P 32 0.3498 113 -0.1 100
IV.MCPD.HHZ. 2021-07-03T20:22:11.90 0.3 undecidable manual P 11 0.3804 111 -0.04 75
IV.GALF.HHZ. 2021-07-03T20:22:10.73 0.6 undecidable manual S 237 0.0674 159 -0.26 52
IV.MSFR.HHZ. 2021-07-03T20:22:10.25 0.6 positive manual P 353 0.2896 118 -0.27 49
IV.EPZF.HHZ. 2021-07-03T20:22:09.87 0.3 undecidable manual P 66 0.1898 131 0.75 64
IV.CAGR.HHE. 2021-07-03T20:22:09.52 0.1 undecidable manual P 221 0.1655 136 0.7 88
IV.ESCV.HHZ. 2021-07-03T20:22:08.28 0.3 negative manual P 90 0.1403 141 -0.25 76
IV.GALF.HHZ. 2021-07-03T20:22:07.22 0.1 negative manual P 237 0.0674 159 -0.68 91
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHN. ML:0 0.0003395 0.34 AML other m 2021-07-03T20:22:13.02
IV.GALF.HHE. ML:0 0.0002875 1.46 AML other m 2021-07-03T20:22:13.94
IV.ESCV.HHE. ML:1.5 0.0001875 0.44 AML other m 2021-07-03T20:22:15.49
IV.MUCR.HHN. ML:1.3 5.89E-5 0.32 AML other m 2021-07-03T20:22:17.98
IV.MUCR.HHE. ML:1.2 4.53E-5 0.26 AML other m 2021-07-03T20:22:18.17
IV.MCPD.HHE. ML:1.4 7.3E-5 0.34 AML other m 2021-07-03T20:22:19.29
IV.ESCV.HHN. ML:1.6 0.00023376115 1.3184 AML other m 2021-07-03T20:22:16.98
IV.MCPD.HHN. ML:1.2 4.575E-5 0.62 AML other m 2021-07-03T20:22:20.70
IV.HLNI.HHN. ML:1.3 4.405E-5 1.12 AML other m 2021-07-03T20:22:21.99
IV.HLNI.HHE. ML:1.3 4.485E-5 0.7 AML other m 2021-07-03T20:22:21.94
IV.RAFF.HHN. ML:1.4 4.83E-5 0.84 AML other m 2021-07-03T20:22:27.52
IV.RAFF.HHE. ML:1.4 4.46E-5 1.04 AML other m 2021-07-03T20:22:28.86
IV.SSY.HHE. ML:2 0.000154 0.74 AML other m 2021-07-03T20:22:28.87
IV.SSY.HHN. ML:2.4 0.0003225 0.76 AML other m 2021-07-03T20:22:29.14
IV.HMDC.HHE. ML:1.6 4.495E-5 0.68 AML other m 2021-07-03T20:22:33.51
MN.CLTB.HHE. ML:2.3 0.0001315 0.88 AML other m 2021-07-03T20:22:48.96
MN.CLTB.HHN. ML:2.4 0.00014775 0.82 AML other m 2021-07-03T20:22:49.62
IV.HMDC.HHN. ML:1.7 6.2079465E-5 1.0112 AML other m 2021-07-03T20:22:34.10
IV.HCRL.HHE. ML:1.2 2.9046685E-5 0.4992 AML other m 2021-07-03T20:22:27.96
IV.HCRL.HHN. ML:1.3 3.565284E-5 0.1152 AML other m 2021-07-03T20:22:25.73
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