INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.2 on date 25-04-2018 and time 19:24:36 (Italy) in region Confine Italia Svizzera (SVIZZERA)

A magnitude ML 1.2 earthquake occured in region: Confine Italia Svizzera (SVIZZERA), on

  • 25-04-2018 17:24:36 (UTC)
  • 25-04-2018 19:24:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.62, 10.47 at 13 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
Tubre BZ 3 977 977
Stelvio BZ 7 1161 2138
Glorenza BZ 8 896 3034
Prato allo Stelvio BZ 9 3474 6508
Malles Venosta BZ 9 5162 11670
Sluderno BZ 10 1804 13474
Lasa BZ 17 3993 17467
Valfurva SO 19 2638 20105
Bormio SO 19 4121 24226
Valdidentro SO 20 4125 28351

Municipalities with at least 50000 inhabitants

An earthquake occurred to
69 Km W of Bolzano (106441 inhabitants)
79 Km NW of Trento (117317 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 1.2 2018-04-25
17:24:36
46.63 10.47 13 2018-04-25
17:46:41
Sala Sismica INGV-Roma 56096971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-04-25 17:24:36 ± 0.09
Latitude 46.63 ± 0.01
Longitude 10.47 ± 0.01
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 56096971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 644
Semi-minor axis of confidence ellipse (meter) 197
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 179
Circular confidence region, given by single value of horizontal uncertainty (meter) 640
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.71136
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 56096971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-04-25 17:46:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CH.DAVOX.HHZ. 2018-04-25T17:24:51.89 0.6 undecidable manual S 291 0.4344 93 -0.38 43
CH.BERNI.HHZ. 2018-04-25T17:24:50.24 0.3 undecidable manual S 236 0.3732 94 -0.24 67
SI.ROSI.HHZ. 2018-04-25T17:24:50.38 0.6 undecidable manual P 64 0.7114 92 -0.16 42
ST.CARE.EHZ. 2018-04-25T17:24:46.52 0.6 undecidable manual S 142 0.2518 98 -0.38 44
CH.DAVOX.HHZ. 2018-04-25T17:24:45.90 0.1 undecidable manual P 291 0.4344 93 0.1 92
CH.BERNI.HHZ. 2018-04-25T17:24:44.89 0.1 undecidable manual P 236 0.3732 94 0.13 92
IV.BRMO.HHZ. 2018-04-25T17:24:44.16 0.6 undecidable manual S 205 0.1637 108 -0.17 48
IV.BORM.HNZ. 2018-04-25T17:24:44.32 0.6 undecidable manual S 203 0.1682 107 -0.15 48
CH.FUORN.HHZ. 2018-04-25T17:24:43.66 0.6 undecidable manual S 268 0.1421 113 -0.09 49
ST.CARE.EHZ. 2018-04-25T17:24:42.82 0.1 undecidable manual P 142 0.2518 98 0.13 95
IV.BRMO.HHZ. 2018-04-25T17:24:41.28 0.3 undecidable manual P 205 0.1637 108 0.07 73
IV.BORM.HNZ. 2018-04-25T17:24:41.66 0.1 undecidable manual P 203 0.1682 107 0.37 91
SI.MOSI.HHZ. 2018-04-25T17:24:41.59 0.6 undecidable manual S 99 0.0549 149 -0.16 48
CH.FUORN.HHZ. 2018-04-25T17:24:40.92 0.1 positive manual P 268 0.1421 113 0.05 98
SI.MOSI.HHZ. 2018-04-25T17:24:39.73 0.1 positive manual P 99 0.0549 149 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
SI.MOSI.HHN. ML:1 0.000133 1.02 AML other m 2018-04-25T17:24:42.19
SI.MOSI.HHE. ML:1 0.0001089 0.7 AML other m 2018-04-25T17:24:42.60
CH.FUORN.HHE. ML:1.2 0.000128 0.24 AML other m 2018-04-25T17:24:43.81
CH.FUORN.HHN. ML:1.3 0.000162 0.26 AML other m 2018-04-25T17:24:43.94
IV.BRMO.HHE. ML:1.3 0.000149 0.18 AML other m 2018-04-25T17:24:44.37
IV.BRMO.HHN. ML:1.1 9.11E-5 0.2 AML other m 2018-04-25T17:24:44.39
CH.DAVOX.HHN. ML:1.2 4.43E-5 0.6 AML other m 2018-04-25T17:24:52.43
CH.DAVOX.HHE. ML:1.2 4.085E-5 0.2 AML other m 2018-04-25T17:24:52.48
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