Earthquake with magnitude of ML 1.4 on date 25-04-2020 and time 00:55:32 (UTC) in region 4 km SE Troina (EN)

A magnitude ML 1.4 earthquake occured in region: 4 km SE Troina (EN), on

  • 25-04-2020 00:55:32 (UTC)
  • 25-04-2020 02:55:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.76, 14.64 at 20 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 4 9373 9373
Gagliano Castelferrato EN 10 3593 12966
San Teodoro ME 12 1403 14369
Regalbuto EN 12 7277 21646
CesarĂ² ME 12 2439 24085
Cerami EN 13 2006 26091
Agira EN 15 8345 34436
Capizzi ME 17 3176 37612
Bronte CT 18 19172 56784
Centuripe EN 18 5470 62254
Maniace CT 19 3765 66019
Nissoria EN 20 3000 69019

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km NW of Catania (314555 inhabitants)
49 Km W of Acireale (52622 inhabitants)
59 Km NE of Caltanissetta (63360 inhabitants)
84 Km NE of Gela (75827 inhabitants)
90 Km N of Vittoria (63339 inhabitants)
93 Km N of Ragusa (73313 inhabitants)
94 Km SW of Messina (238439 inhabitants)
97 Km W of Reggio di Calabria (183035 inhabitants)
97 Km NW of Siracusa (122291 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
Rev 100 ML 1.4 2020-04-25
00:55:32
37.76 14.64 20 2020-04-25
01:01:47
Sala Sismica INGV-Roma 78553291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-25 00:55:32 ± 0.34
Latitude 37.76 ± 0.01
Longitude 14.64 ± 0.01
Depth (km) 20 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78553291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1180
Semi-minor axis of confidence ellipse (meter) 168
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 1180
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 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.07285
Epicentral distance of station farthest from the epicenter (degree) 0.69248
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 78553291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-25 01:01:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SSY.HHZ. 2020-04-25T00:55:55.73 0.3 undecidable manual S 150 0.6925 98 0.48 64
IV.HLNI.HHZ. 2020-04-25T00:55:48.01 0.6 undecidable manual S 155 0.4497 103 -0.15 49
IV.SSY.HHZ. 2020-04-25T00:55:45.09 0.1 undecidable manual P 150 0.6925 98 -0.39 88
IV.MUCR.HHZ. 2020-04-25T00:55:45.47 0.6 undecidable manual S 33 0.3408 108 0.41 47
IV.MSFR.HHZ. 2020-04-25T00:55:42.89 0.6 undecidable manual S 353 0.2779 113 -0.43 47
IV.HLNI.HHZ. 2020-04-25T00:55:40.90 0.6 undecidable manual P 155 0.4497 103 -0.48 45
IV.CAGR.HHE. 2020-04-25T00:55:40.48 0.3 undecidable manual S 219 0.1736 128 -0.16 76
IV.MUCR.HHZ. 2020-04-25T00:55:39.70 0.1 positive manual P 33 0.3408 108 0.11 100
IV.GALF.HHZ. 2020-04-25T00:55:38.87 0.6 undecidable manual S 230 0.0728 154 0.13 53
IV.MSFR.HHZ. 2020-04-25T00:55:38.68 0.3 negative manual P 353 0.2779 113 0.09 76
IV.CAGR.HHE. 2020-04-25T00:55:37.80 0.1 undecidable manual P 219 0.1736 128 0.76 86
IV.GALF.HHZ. 2020-04-25T00:55:35.51 0.1 negative manual P 230 0.0728 154 -0.44 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:1.5 0.0002485 0.58 AML other m 2020-04-25T00:55:41.50
IV.HLNI.HHN. ML:1.4 6.405E-5 0.5 AML other m 2020-04-25T00:55:42.54
IV.GALF.HHN. ML:1.6 0.000293 1.46 AML other m 2020-04-25T00:55:42.86
IV.MUCR.HHN. ML:1.3 6.005E-5 0.32 AML other m 2020-04-25T00:55:46.43
IV.MUCR.HHE. ML:1.2 5.09E-5 1.04 AML other m 2020-04-25T00:55:47.72
IV.HLNI.HHE. ML:1.4 5.63E-5 0.52 AML other m 2020-04-25T00:55:49.12
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