Earthquake with magnitude of ML 1.6 on date 24-12-2018 and time 09:41:20 (Italy) in region Confine Italia Svizzera (SVIZZERA)

A magnitude ML 1.6 earthquake occured in region: Confine Italia Svizzera (SVIZZERA), on

  • 24-12-2018 08:41:20 (UTC)
  • 24-12-2018 09:41:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.986, 7.88 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 7 557 557
Ceppo Morelli VB 15 321 878
Alagna Valsesia VC 15 408 1286
Carcoforo VC 16 78 1364
Rima San Giuseppe VC 17 59 1423
Riva Valdobbia VC 18 258 1681
Vanzone con San Carlo VB 18 407 2088
Gressoney-La-Trinité AO 18 303 2391

Municipalities with at least 50000 inhabitants

An earthquake occurred to
75 Km W of Varese (80799 inhabitants)
80 Km W of Gallarate (53343 inhabitants)
83 Km NW of Novara (104380 inhabitants)
86 Km W of Busto Arsizio (83106 inhabitants)
92 Km W of Legnano (60262 inhabitants)
95 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
Bulletin
Rev1000
ML 1.6 2018-12-24
08:41:20
45.9858 7.8795 11 2019-06-04
09:16:18
Bollettino Sismico Italiano INGV 68792371
Reviewed
Rev100
ML 1.6 2018-12-24
08:41:20
45.9857 7.8798 11 2018-12-24
08:48:21
Sala Sismica INGV-Roma 64146321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-24 08:41:20 ± 0.18
Latitude 45.9858 ± 0.0099
Longitude 7.8795 ± 0.0272
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 68792371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2064
Semi-minor axis of confidence ellipse (meter) 1123
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 86
Circular confidence region, given by single value of horizontal uncertainty (meter) 2060
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
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) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.08723
Epicentral distance of station farthest from the epicenter (degree) 1.25635
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 68792371
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-22 15:48:31

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 64146321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-24 08:48:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.BNI.HHZ. 2018-12-24T08:41:44.97 0.1 undecidable manual P 222 1.2564 50 1.1 56
IV.MRGE.HHZ. 2018-12-24T08:41:41.12 0.6 undecidable manual S 250 0.6088 50 -0.36 43
GU.REMY.HHZ. 2018-12-24T08:41:38.79 0.3 undecidable manual S 254 0.5243 50 -0.18 69
GU.TRAV.HHZ. 2018-12-24T08:41:36.77 0.6 undecidable manual S 191 0.482 50 -0.94 36
GU.CIRO.HHZ. 2018-12-24T08:41:35.95 0.6 undecidable manual S 210 0.4407 50 -0.55 43
CH.DIX.HHZ. 2018-12-24T08:41:32.99 0.3 undecidable manual S 286 0.3399 50 -0.53 66
IV.MRGE.HHZ. 2018-12-24T08:41:32.96 0.3 undecidable manual P 250 0.6088 50 0.17 68
GU.REMY.HHZ. 2018-12-24T08:41:31.68 0.1 undecidable manual P 254 0.5243 50 0.34 88
GU.TRAV.HHZ. 2018-12-24T08:41:30.71 0.1 positive manual P 191 0.482 50 0.09 94
GU.CIRO.HHZ. 2018-12-24T08:41:29.98 0.1 undecidable manual P 210 0.4407 50 0.06 95
CH.DIX.HHZ. 2018-12-24T08:41:28.42 0.1 undecidable manual P 286 0.3399 50 0.22 94
GU.SATI.HHZ. 2018-12-24T08:41:26.22 0.6 undecidable manual S 184 0.1106 131 -0.39 47
CH.MMK.HHZ. 2018-12-24T08:41:25.38 0.3 undecidable manual S 42 0.0872 138 -0.59 67
CH.MMK.HHZ. 2018-12-24T08:41:24.00 0.1 undecidable manual P 42 0.0872 138 0.16 100
GU.SATI.HHZ. 2018-12-24T08:41:24.45 0.1 undecidable manual P 184 0.1106 131 0.24 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.DIX.HHE. ML:2 0.0003405 0.64 AML other m 2018-12-24T08:41:33.20
CH.DIX.HHN. ML:2.1 0.0004465 0.72 AML other m 2018-12-24T08:41:33.58
GU.CIRO.HHE. ML:1.4 6.645E-5 0.82 AML other m 2018-12-24T08:41:36.35
GU.CIRO.HHN. ML:1.4 6.27E-5 0.96 AML other m 2018-12-24T08:41:36.31
GU.TRAV.HHE. ML:1.8 0.0001465 1.52 AML other m 2018-12-24T08:41:37.23
GU.TRAV.HHN. ML:1.8 0.0001715 0.88 AML other m 2018-12-24T08:41:38.54
GU.REMY.HHN. ML:1.7 0.00010515 0.52 AML other m 2018-12-24T08:41:39.72
GU.REMY.HHE. ML:1.5 6.905E-5 0.52 AML other m 2018-12-24T08:41:41.77
IV.MRGE.HHN. ML:1.5 5.07E-5 0.08 AML other m 2018-12-24T08:41:42.19
IV.MRGE.HHE. ML:1.4 4.11E-5 0.56 AML other m 2018-12-24T08:41:43.41
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