Earthquake with magnitude of ML 0.9 on date 19-08-2018 and time 05:34:26 (Italy) in region 6 km W Macugnaga (VB)

A magnitude ML 0.9 earthquake occured in region: 6 km W Macugnaga (VB), on

  • 19-08-2018 03:34:26 (UTC)
  • 19-08-2018 05:34:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.96, 7.9 at 10 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 6 557 557
Alagna Valsesia VC 12 408 965
Carcoforo VC 13 78 1043
Ceppo Morelli VB 13 321 1364
Rima San Giuseppe VC 14 59 1423
Riva Valdobbia VC 15 258 1681
Gressoney-La-Trinité AO 16 303 1984
Vanzone con San Carlo VB 17 407 2391
Rimasco VC 17 106 2497
Mollia VC 19 95 2592
Bannio Anzino VB 20 475 3067

Municipalities with at least 50000 inhabitants

An earthquake occurred to
74 Km W of Varese (80799 inhabitants)
77 Km W of Gallarate (53343 inhabitants)
80 Km NW of Novara (104380 inhabitants)
84 Km W of Busto Arsizio (83106 inhabitants)
89 Km W of Legnano (60262 inhabitants)
94 Km W of Como (84495 inhabitants)
100 Km N of Torino (890529 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
Rev 1000 ML 0.9 2018-08-19
03:34:26
45.96 7.9 10 2019-04-24
14:51:17
Bollettino Sismico Italiano INGV 67190451
Rev 100 ML 0.9 2018-08-19
03:34:26
45.96 7.9 10 2018-08-19
03:40:08
Sala Sismica INGV-Roma 59933931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-19 03:34:26 ± 0.22
Latitude 45.96 ± 0.01
Longitude 7.90 ± 0.03
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 67190451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2569
Semi-minor axis of confidence ellipse (meter) 875
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 107
Circular confidence region, given by single value of horizontal uncertainty (meter) 2570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 166
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.61154
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 59933931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-19 03:40:08

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 67190451
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-04-02 13:08:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MCIV.HHZ. 2018-08-19T03:36:14.19 3.0 undecidable manual Sn 0.95 0
IV.MC2.EHZ. 2018-08-19T03:35:39.44 3.0 undecidable manual Pn 5.82 0
IV.NDIM.HHZ. 2018-08-19T03:35:28.72 3.0 undecidable manual Sg 0.57 0
GU.REMY.HHZ. 2018-08-19T03:34:44.17 0.6 undecidable manual S 257 0.5288 50 -0.54 42
CH.DIX.HHZ. 2018-08-19T03:34:39.37 0.6 undecidable manual S 290 0.3597 50 -0.35 46
IV.MRGE.HHZ. 2018-08-19T03:34:38.98 0.3 undecidable manual P 252 0.6115 50 0.6 61
GU.REMY.HHZ. 2018-08-19T03:34:37.12 0.3 undecidable manual P 257 0.5288 50 0.16 69
IV.MILN.HHZ. 2018-08-19T03:34:36.19 3.0 positive manual P -3.71 0
GU.TRAV.HHZ. 2018-08-19T03:34:35.31 0.3 undecidable manual P 193 0.4569 50 -0.43 66
CH.DIX.HHZ. 2018-08-19T03:34:34.31 0.3 undecidable manual P 290 0.3597 50 0.23 70
CH.MMK.HHZ. 2018-08-19T03:34:31.36 0.1 undecidable manual S 27 0.1034 131 -0.31 97
GU.SATI.HHZ. 2018-08-19T03:34:30.98 0.1 undecidable manual S 193 0.0854 137 -0.18 100
GU.SATI.HHZ. 2018-08-19T03:34:29.41 0.1 undecidable manual P 193 0.0854 137 0.27 98
CH.MMK.HHZ. 2018-08-19T03:34:29.70 0.1 undecidable manual P 27 0.1034 131 0.27 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.SATI.HHE. ML:1.3 0.000256 0.06 AML other m 2018-08-19T03:34:31.01
GU.SATI.HHN. ML:0.8 9.08E-5 0.08 AML other m 2018-08-19T03:34:31.02
CH.MMK.HHN. ML:0.8 7.93E-5 0.14 AML other m 2018-08-19T03:34:31.43
CH.MMK.HHE. ML:0.8 7.345E-5 0.52 AML other m 2018-08-19T03:34:31.40
GU.TRAV.HHE. ML:0.8 1.603E-5 0.22 AML other m 2018-08-19T03:34:41.12
GU.TRAV.HHN. ML:0.9 2.045E-5 0.74 AML other m 2018-08-19T03:34:44.55
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