Earthquake with magnitude of ML 1.2 on date 25-03-2023 and time 18:56:49 (UTC) in region Confine Italia Svizzera (SVIZZERA)

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

  • 25-03-2023 18:56:49 (UTC)
  • 25-03-2023 19:56:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.5160, 8.0240 at 11 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
99 Km NW of Varese (80799 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.2 2023-03-25
18:56:49
46.516 8.0235 11 2023-03-25
19:06:36
Sala Sismica INGV-Roma 115729051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-25 18:56:49 ± 0.18
Latitude 46.5160 ± 0.0099
Longitude 8.0235 ± 0.0170
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115729051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1674
Semi-minor axis of confidence ellipse (meter) 202
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 309
Circular confidence region, given by single value of horizontal uncertainty (meter) 1670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 173
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) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.44426
Epicentral distance of station farthest from the epicenter (degree) 1.02163
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 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 115729051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-25 19:06:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.TRAV.HHE. 2023-03-25T18:57:21.89 0.6 undecidable manual S 191 113.3976 90 -0.22 44
GU.REMY.HHE. 2023-03-25T18:57:18.90 0.6 undecidable manual S 222 100.5216 90 0.23 45
GU.SATI.HHZ. 2023-03-25T18:57:10.59 0.6 undecidable manual S 190 72.0723 90 -0.49 45
CH.DIX.HHZ. 2023-03-25T18:57:09.01 0.6 undecidable manual S 225 67.5768 90 -0.87 39
GU.TRAV.HHE. 2023-03-25T18:57:09.08 0.6 undecidable manual P 191 113.3976 90 0.79 38
IV.MRGE.HHZ. 2023-03-25T18:57:08.38 0.6 undecidable manual P 222 111 90 0.46 42
GU.REMY.HHE. 2023-03-25T18:57:06.54 1.0 undecidable manual P 222 100.5216 90 0.25 23
CH.MMK.HHE. 2023-03-25T18:57:05.04 0.6 undecidable manual S 185 51.8037 90 -0.65 44
CH.FUSIO.HHZ. 2023-03-25T18:57:05.09 0.6 undecidable manual S 98 49.3173 90 0.08 51
CH.BNALP.HHZ. 2023-03-25T18:57:04.45 0.6 undecidable manual S 38 49.8168 90 -0.69 40
GU.SATI.HHZ. 2023-03-25T18:57:02.32 0.6 undecidable manual P 190 72.0723 90 0.41 46
CH.DIX.HHZ. 2023-03-25T18:57:01.25 0.1 positive manual P 225 67.5768 90 0.03 100
CH.MMK.HHE. 2023-03-25T18:56:59.06 0.3 undecidable manual P 185 51.8037 90 0.26 74
CH.BNALP.HHZ. 2023-03-25T18:56:58.54 0.3 undecidable manual P 38 49.8168 90 0.06 76
CH.FUSIO.HHZ. 2023-03-25T18:56:58.91 0.3 undecidable manual P 98 49.3173 90 0.5 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.FUSIO.HHN. ML:1.0 0.000026940195 0.1536 AML other m 2023-03-25T18:57:05.71
GU.SATI.HHE. ML:1.3 0.0000328878375 0.0896 AML other m 2023-03-25T18:57:11.43
GU.SATI.HHN. ML:1.0 0.000013000045 0.1408 AML other m 2023-03-25T18:57:11.43
CH.FUSIO.HHE. ML:0.8 0.000016465325999999997 0.0896 AML other m 2023-03-25T18:57:05.77
CH.BNALP.HHE. ML:0.9 0.00001791718 0.1408 AML other m 2023-03-25T18:57:05.08
CH.BNALP.HHN. ML:1.0 0.000026175246 0.1024 AML other m 2023-03-25T18:57:04.59
CH.DIX.HHE. ML:1.4 0.000039431696 0.96 AML other m 2023-03-25T18:57:09.86
CH.DIX.HHN. ML:1.4 0.000045285174999999996 0.9088 AML other m 2023-03-25T18:57:09.40
GU.SATI.HNE. ML:1.3 0.0000359207945 0.1024 AML other m 2023-03-25T18:57:11.42
GU.SATI.HNN. ML:1.3 0.000034220255000000005 0.9216 AML other m 2023-03-25T18:57:11.32
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