Earthquake with magnitude of ML 2.3 on date 15-12-2018 and time 01:21:08 (Italy) in region Confine Italia Svizzera (SVIZZERA)

A magnitude ML 2.3 earthquake occured in region: Confine Italia Svizzera (SVIZZERA), on

  • 15-12-2018 00:21:08 (UTC)
  • 15-12-2018 01:21:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.99, 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 14 321 878
Alagna Valsesia VC 15 408 1286
Carcoforo VC 15 78 1364
Rima San Giuseppe VC 17 59 1423
Vanzone con San Carlo VB 18 407 1830
Riva Valdobbia VC 18 258 2088
Gressoney-La-Trinité AO 18 303 2391
Antrona Schieranco VB 20 428 2819
Rimasco VC 20 106 2925

Municipalities with at least 50000 inhabitants

An earthquake occurred to
75 Km W of Varese (80799 inhabitants)
79 Km W of Gallarate (53343 inhabitants)
83 Km NW of Novara (104380 inhabitants)
86 Km W of Busto Arsizio (83106 inhabitants)
91 Km W of Legnano (60262 inhabitants)
95 Km W of Como (84495 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985 *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
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 1000 ML 2.3 2018-12-15
00:21:08
45.99 7.89 11 2019-06-04
09:16:03
Bollettino Sismico Italiano INGV 63962951
Rev 100 ML 2.4 2018-12-15
00:21:08
45.97 7.88 13 2018-12-15
00:29:40
Sala Sismica INGV-Roma 63915561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-15 00:21:08 ± 0.1
Latitude 45.99 ± 0.01
Longitude 7.89 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 63962951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 772
Semi-minor axis of confidence ellipse (meter) 370
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 138
Circular confidence region, given by single value of horizontal uncertainty (meter) 770
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 27
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
Epicentral distance of station farthest from the epicenter (degree) 1.31211
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 63962951
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-12-17 08:30:16

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 63915561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-15 00:29:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.PZZ.HHZ. 2018-12-15T00:21:52.76 3.0 undecidable manual S 0
GU.RRL.HHZ. 2018-12-15T00:21:50.10 0.3 undecidable manual S 216 1.3121 50 0.38 55
MN.BNI.HHZ. 2018-12-15T00:21:47.95 0.3 undecidable manual S 223 1.2591 50 -0.21 58
MN.TUE.HHZ. 2018-12-15T00:21:43.79 0.6 undecidable manual S 64 1.1215 50 -0.28 40
GU.RONC.EHZ. 2018-12-15T00:21:43.00 3.0 undecidable manual P 0
GU.STV.HHZ. 2018-12-15T00:21:43.43 3.0 undecidable manual P 0
GU.RSP.HHZ. 2018-12-15T00:21:39.18 0.3 undecidable manual S 208 0.9434 50 0.4 60
GU.PZZ.HHZ. 2018-12-15T00:21:38.74 3.0 undecidable manual P 0
GU.ROTM.HHZ. 2018-12-15T00:21:33.37 3.0 positive manual P 2.17 0
IV.MDI.HHZ. 2018-12-15T00:21:32.29 0.1 undecidable manual P 99 1.2923 50 0.43 74
GU.RRL.HHZ. 2018-12-15T00:21:32.88 0.1 undecidable manual P 216 1.3121 50 0.67 67
MN.BNI.HHZ. 2018-12-15T00:21:32.13 0.1 undecidable manual P 223 1.2591 50 0.82 64
IV.MRGE.HHZ. 2018-12-15T00:21:28.55 0.3 undecidable manual S 250 0.6124 50 -0.45 64
MN.TUE.HHZ. 2018-12-15T00:21:28.89 0.3 undecidable manual P 64 1.1215 50 -0.06 62
IV.VARE.HHZ. 2018-12-15T00:21:28.98 0.3 undecidable manual S 101 0.6259 50 -0.42 64
GU.MONC.HHZ. 2018-12-15T00:21:27.98 3.0 undecidable manual P 0
GU.RSP.HHZ. 2018-12-15T00:21:26.09 0.3 undecidable manual P 208 0.9434 50 0.2 63
GU.REMY.HHZ. 2018-12-15T00:21:26.40 0.3 undecidable manual S 254 0.5279 50 -0.08 70
CH.BNALP.HHZ. 2018-12-15T00:21:26.64 0.1 undecidable manual P 23 0.9587 50 0.47 79
GU.TRAV.HHZ. 2018-12-15T00:21:24.37 0.3 undecidable manual S 192 0.4829 50 -0.78 58
GU.CIRO.HHZ. 2018-12-15T00:21:23.52 0.3 undecidable manual S 210 0.4434 50 -0.45 66
CH.FUSIO.HHZ. 2018-12-15T00:21:21.93 0.1 undecidable manual P 49 0.7132 50 -0.03 91
CH.DIX.HHZ. 2018-12-15T00:21:20.42 0.3 undecidable manual S 286 0.3444 50 -0.62 64
IV.MRGE.HHZ. 2018-12-15T00:21:20.25 0.1 undecidable manual P 250 0.6124 50 0 94
IV.VARE.HHZ. 2018-12-15T00:21:20.42 0.1 undecidable manual P 101 0.6259 50 -0.06 92
GU.TRAV.HHZ. 2018-12-15T00:21:18.03 0.1 undecidable manual P 192 0.4829 50 0.01 96
GU.REMY.HHZ. 2018-12-15T00:21:18.87 0.1 undecidable manual P 254 0.5279 50 0.08 94
GU.CIRO.HHZ. 2018-12-15T00:21:17.31 0.1 undecidable manual P 210 0.4434 50 -0.03 96
IT.VRB.HGZ. 2018-12-15T00:21:17.78 3.0 negative manual P 0.28 0
CH.DIX.HHZ. 2018-12-15T00:21:15.72 0.1 undecidable manual P 286 0.3444 50 0.07 98
GU.SATI.HHZ. 2018-12-15T00:21:13.58 0.3 undecidable manual S 186 0.1115 131 -0.36 72
CH.MMK.HHZ. 2018-12-15T00:21:12.76 0.1 undecidable manual S 40 0.0845 139 -0.44 95
CH.MMK.HHZ. 2018-12-15T00:21:11.32 0.1 undecidable manual P 40 0.0845 139 0.19 100
GU.SATI.HHZ. 2018-12-15T00:21:11.78 0.1 undecidable manual P 186 0.1115 131 0.23 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.SATI.HHE. ML:3 0.00952 0.08 AML other m 2018-12-15T00:21:13.62
GU.SATI.HHN. ML:2.7 0.00544 0.14 AML other m 2018-12-15T00:21:13.70
CH.DIX.HHE. ML:2.8 0.0025 0.64 AML other m 2018-12-15T00:21:20.54
CH.DIX.HHN. ML:3 0.003205 0.7 AML other m 2018-12-15T00:21:20.92
GU.CIRO.HHE. ML:2.3 0.000495 1.16 AML other m 2018-12-15T00:21:24.67
GU.CIRO.HHN. ML:2.2 0.0004695 0.76 AML other m 2018-12-15T00:21:24.26
GU.TRAV.HHE. ML:2.7 0.00133 0.44 AML other m 2018-12-15T00:21:24.56
GU.TRAV.HHN. ML:2.8 0.0015 0.9 AML other m 2018-12-15T00:21:25.87
GU.REMY.HHN. ML:2.6 0.000801 1.48 AML other m 2018-12-15T00:21:27.79
GU.REMY.HHE. ML:2.4 0.0005175 1.48 AML other m 2018-12-15T00:21:28.10
IV.MRGE.HHN. ML:2.4 0.000389 0.3 AML other m 2018-12-15T00:21:29.53
IV.MRGE.HHE. ML:2.2 0.000285 0.78 AML other m 2018-12-15T00:21:30.74
CH.FUSIO.HHN. ML:2.1 0.0001725 0.1 AML other m 2018-12-15T00:21:35.75
CH.FUSIO.HHE. ML:2.1 0.000164 0.72 AML other m 2018-12-15T00:21:38.27
GU.RSP.HHE. ML:2.4 0.000208 0.16 AML other m 2018-12-15T00:21:40.58
GU.RSP.HNE. ML:2.3 0.0001955 0.16 AML other m 2018-12-15T00:21:40.50
GU.RSP.HHN. ML:2.4 0.0002435 0.22 AML other m 2018-12-15T00:21:40.59
GU.RSP.HNN. ML:2.4 0.0002325 0.22 AML other m 2018-12-15T00:21:40.59
CH.BNALP.HHN. ML:1.9 7.505E-5 0.62 AML other m 2018-12-15T00:21:46.42
IV.MONC.HHE. ML:2.5 0.000314 0.36 AML other m 2018-12-15T00:21:47.25
MN.TUE.HNE. ML:2 6.585E-5 1.42 AML other m 2018-12-15T00:21:48.19
MN.TUE.HHE. ML:2 6.565E-5 0.46 AML other m 2018-12-15T00:21:48.19
IV.MONC.HHN. ML:2.5 0.0003045 0.24 AML other m 2018-12-15T00:21:48.23
CH.BNALP.HHE. ML:1.9 6.495E-5 0.36 AML other m 2018-12-15T00:21:48.59
MN.TUE.HHN. ML:2.1 9.49E-5 0.46 AML other m 2018-12-15T00:21:49.23
MN.TUE.HNN. ML:2 7.605E-5 0.46 AML other m 2018-12-15T00:21:49.23
GU.RRL.HHE. ML:2.2 7.9E-5 1.24 AML other m 2018-12-15T00:21:59.98
GU.RRL.HHN. ML:2.3 0.0001165 0.74 AML other m 2018-12-15T00:22:00.05
GU.PZZ.HHE. ML:2.3 8.54E-5 0.52 AML other m 2018-12-15T00:22:06.63
GU.PZZ.HHN. ML:2.3 8.55E-5 0.8 AML other m 2018-12-15T00:22:07.35
ST.RONC.EHE. ML:2.7 0.00014 0.48 AML other m 2018-12-15T00:22:11.20
ST.RONC.EHN. ML:2.8 0.000158 0.56 AML other m 2018-12-15T00:22:11.92
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in full SEED format Download