Earthquake with magnitude of ML 1.2 on date 04-01-2024 and time 23:54:51 (Italy) in region Confine Italia Svizzera (SVIZZERA)

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

  • 04-01-2024 22:54:51 (UTC)
  • 04-01-2024 23:54:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.9830, 7.8910 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Macugnaga VB 6 557 557
Ceppo Morelli VB 14 321 878
Carcoforo VC 15 78 956
Alagna Valsesia VC 15 408 1364
Rima San Giuseppe VC 17 59 1423
Vanzone con San Carlo VB 17 407 1830
Riva Valdobbia VC 17 258 2088
Gressoney-La-Trinité AO 18 303 2391
Rimasco VC 19 106 2497
Antrona Schieranco VB 20 428 2925
Bannio Anzino VB 20 475 3400

Municipalities with at least 50000 inhabitants

An earthquake occurred to
75 Km W of Varese (80799 inhabitants)
79 Km W of Gallarate (53343 inhabitants)
82 Km NW of Novara (104380 inhabitants)
85 Km W of Busto Arsizio (83106 inhabitants)
91 Km W of Legnano (60262 inhabitants)
94 Km W of Como (84495 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 2024-01-04
22:54:51
45.9833 7.8913 11 2024-01-04
22:59:12
Sala Sismica INGV-Roma 124489481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-04 22:54:51 ± 0.2
Latitude 45.9833 ± 0.0090
Longitude 7.8913 ± 0.0311
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124489481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2425
Semi-minor axis of confidence ellipse (meter) 838
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 102
Circular confidence region, given by single value of horizontal uncertainty (meter) 2420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.08364
Epicentral distance of station farthest from the epicenter (degree) 0.74374
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:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 124489481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-04 22:59:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MRGE.HHZ. 2024-01-04T22:55:11.88 0.6 undecidable manual S 250 68.376 50 -0.35 43
GU.LSD.HHZ. 2024-01-04T22:55:06.04 1.0 positive manual P 226 82.5507 50 0.41 21
GU.CIRO.HHZ. 2024-01-04T22:55:06.40 0.6 undecidable manual S 211 49.1175 50 -0.7 40
CH.DIX.HHZ. 2024-01-04T22:55:04.16 0.3 undecidable manual S 286 38.7279 50 -0.16 71
IV.MRGE.HHZ. 2024-01-04T22:55:03.85 0.6 undecidable manual P 250 68.376 50 0.42 42
GU.CIRO.HHZ. 2024-01-04T22:55:00.56 0.3 undecidable manual P 211 49.1175 50 0.09 71
CH.DIX.HHZ. 2024-01-04T22:54:59.35 0.6 negative manual P 286 38.7279 50 0.49 44
GU.SATI.HHZ. 2024-01-04T22:54:56.89 0.1 undecidable manual S 188 12.0768 131 -0.12 100
CH.MMK.HHE. 2024-01-04T22:54:55.84 0.3 undecidable manual S 37 9.2796 139 -0.48 70
CH.MMK.HHE. 2024-01-04T22:54:54.44 0.1 undecidable manual P 37 9.2796 139 0.19 99
GU.SATI.HHZ. 2024-01-04T22:54:54.94 0.1 undecidable manual P 188 12.0768 131 0.29 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.SATI.HHE. ML:1.4 0.00029299999999999997 0.08 AML other m 2024-01-04T22:54:56.96
GU.SATI.HHN. ML:1.1 0.000149 0.08 AML other m 2024-01-04T22:54:56.94
CH.DIX.HHE. ML:1.3 0.0000667 0.42 AML other m 2024-01-04T22:54:59.91
GU.CIRO.HHN. ML:0.8 0.000017 0.42 AML other m 2024-01-04T22:55:06.59
CH.DIX.HHN. ML:1.3 0.00006475 0.4 AML other m 2024-01-04T22:55:11.01
GU.CIRO.HHE. ML:0.8 0.00001508 0.42 AML other m 2024-01-04T22:55:12.55
GU.LSD.HHE. ML:1.2 0.000018949999999999996 1.58 AML other m 2024-01-04T22:55:17.96
GU.LSD.HHN. ML:1.3 0.0000229 0.42 AML other m 2024-01-04T22:55:18.20
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download