Earthquake with magnitude of ML 1.2 on date 19-01-2021 and time 22:01:37 (Italy) in region 4 km W Issime (AO)

A magnitude ML 1.2 earthquake occured in region: 4 km W Issime (AO), on

  • 19-01-2021 21:01:37 (UTC)
  • 19-01-2021 22:01:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.7, 7.81 at 10 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
Issime AO 4 423 423
Challand-Saint-Anselme AO 6 751 1174
Gaby AO 6 468 1642
Fontainemore AO 7 440 2082
Lillianes AO 8 462 2544
Challand-Saint-Victor AO 8 564 3108
Arnad AO 9 1273 4381
Emarèse AO 9 226 4607
Perloz AO 9 477 5084
Brusson AO 9 897 5981
Gressoney-Saint-Jean AO 9 807 6788
Verrès AO 10 2696 9484
Montjovet AO 10 1801 11285
Issogne AO 11 1400 12685
Pont-Saint-Martin AO 11 3840 16525
Donnas AO 11 2563 19088
Hône AO 11 1166 20254
Bard AO 11 119 20373
Piedicavallo BI 12 193 20566
Champdepraz AO 12 712 21278
Carema TO 12 774 22052
Rosazza BI 13 108 22160
Pontboset AO 14 185 22345
Saint-Vincent AO 14 4660 27005
Quincinetto TO 15 1031 28036
Gressoney-La-Trinité AO 15 303 28339
Campiglia Cervo BI 15 505 28844
Ayas AO 16 1401 30245
Châtillon AO 16 4772 35017
Settimo Vittone TO 16 1560 36577
Champorcher AO 17 388 36965
Tavagnasco TO 17 791 37756
Pontey AO 17 817 38573
Rassa VC 18 71 38644
Nomaglio TO 18 287 38931
Sordevolo BI 19 1373 40304
Quassolo TO 19 354 40658
Andrate TO 19 505 41163
Riva Valdobbia VC 19 258 41421
Pollone BI 20 2109 43530
La Magdeleine AO 20 109 43639

Municipalities with at least 50000 inhabitants

An earthquake occurred to
69 Km W of Novara (104380 inhabitants)
70 Km N of Torino (890529 inhabitants)
77 Km W of Gallarate (53343 inhabitants)
78 Km N of Moncalieri (57294 inhabitants)
80 Km W of Varese (80799 inhabitants)
82 Km W of Busto Arsizio (83106 inhabitants)
87 Km W of Legnano (60262 inhabitants)
92 Km W of Vigevano (63310 inhabitants)
94 Km NW of Asti (76202 inhabitants)
98 Km W of Rho (50434 inhabitants)
Recent and historical Seismicity
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
Reviewed
Rev100
ML 1.2 2021-01-19
21:01:37
45.7 7.81 10 2021-01-19
21:12:07
Sala Sismica INGV-Roma 86384101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-19 21:01:37 ± 0.11
Latitude 45.70 ± 0.01
Longitude 7.81 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86384101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 802
Semi-minor axis of confidence ellipse (meter) 307
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 128
Circular confidence region, given by single value of horizontal uncertainty (meter) 800
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 25
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.88853
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 86384101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-19 21:12:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2021-01-19T21:03:34.48 3.0 undecidable manual Sn -9.99 0
IV.FIR.HHZ. 2021-01-19T21:03:20.26 3.0 undecidable manual Sg 6 0
IV.MBAL.EHZ. 2021-01-19T21:02:52.55 3.0 undecidable manual Sg 2.92 0
IV.APEC.HHZ. 2021-01-19T21:02:46.82 3.0 undecidable manual Pg 2.77 0
IV.BRSN.EHZ. 2021-01-19T21:02:34.38 3.0 positive manual Pn -1.66 0
IV.PCN.EHZ. 2021-01-19T21:02:06.38 3.0 undecidable manual Pn -4.41 0
GU.LSD.HHZ. 2021-01-19T21:01:56.32 0.3 undecidable manual S 244 0.527 50 0.06 69
IV.MRGE.HHZ. 2021-01-19T21:01:55.83 0.3 undecidable manual S 278 0.5261 50 -0.41 64
CH.MUGIO.HHE. 2021-01-19T21:01:55.04 0.3 undecidable manual P 75 0.8885 50 0.33 61
CH.DIX.HHZ. 2021-01-19T21:01:54.18 0.3 undecidable manual S 324 0.4748 50 -0.52 63
GU.REMY.HHZ. 2021-01-19T21:01:54.82 0.3 undecidable manual S 288 0.4757 50 0.07 70
IV.VARE.HHE. 2021-01-19T21:01:51.36 0.3 undecidable manual P 75 0.6925 50 0.01 68
IV.MONC.HHE. 2021-01-19T21:01:50.72 1.0 undecidable manual P 172 0.6268 50 0.49 21
CH.MMK.HHE. 2021-01-19T21:01:50.98 0.3 undecidable manual S 17 0.3714 50 -0.66 61
IV.MRGE.HHZ. 2021-01-19T21:01:49.15 0.3 negative manual P 278 0.5261 50 0.64 60
GU.REMY.HHZ. 2021-01-19T21:01:48.10 0.3 undecidable manual P 288 0.4757 50 0.45 65
GU.LSD.HHZ. 2021-01-19T21:01:48.66 0.3 undecidable manual P 244 0.527 50 0.14 68
CH.DIX.HHZ. 2021-01-19T21:01:47.67 0.3 undecidable manual P 324 0.4748 50 0.05 70
GU.CIRO.HHZ. 2021-01-19T21:01:46.15 0.1 undecidable manual S 241 0.1916 115 0.03 100
GU.SATI.HHZ. 2021-01-19T21:01:45.86 0.1 undecidable manual S 13 0.1844 116 -0.01 100
CH.MMK.HHE. 2021-01-19T21:01:45.89 0.3 undecidable manual P 17 0.3714 50 0.04 72
GU.TRAV.HHZ. 2021-01-19T21:01:45.13 0.3 undecidable manual S 193 0.188 116 -0.84 59
GU.CIRO.HHZ. 2021-01-19T21:01:42.81 0.3 undecidable manual P 241 0.1916 115 0.14 73
GU.TRAV.HHZ. 2021-01-19T21:01:42.54 0.1 undecidable manual P 193 0.188 116 -0.04 99
GU.SATI.HHZ. 2021-01-19T21:01:42.68 0.1 undecidable manual P 13 0.1844 116 0.16 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.TRAV.HHE. ML:1.3 0.000149 0.26 AML other m 2021-01-19T21:01:45.92
GU.TRAV.HHN. ML:1.4 0.0001655 0.88 AML other m 2021-01-19T21:01:46.59
GU.SATI.HHE. ML:1.1 9.74E-5 0.68 AML other m 2021-01-19T21:01:46.67
GU.CIRO.HHE. ML:1.1 7.775E-5 0.08 AML other m 2021-01-19T21:01:46.46
GU.CIRO.HHN. ML:0.9 5.47E-5 0.42 AML other m 2021-01-19T21:01:46.24
GU.SATI.HHN. ML:1 7.385E-5 0.06 AML other m 2021-01-19T21:01:46.45
CH.DIX.HHN. ML:0 7.826115E-5 1.728 AML other m 2021-01-19T21:01:54.56
GU.REMY.HHN. ML:1.4 5.775E-5 1.06 AML other m 2021-01-19T21:01:56.63
GU.REMY.HHE. ML:1.4 5.57E-5 0.48 AML other m 2021-01-19T21:01:56.72
CH.DIX.HHE. ML:0 5.64874705E-5 1.2672 AML other m 2021-01-19T21:01:54.16
GU.LSD.HHE. ML:1 2.18367E-5 0.064 AML other m 2021-01-19T21:01:59.26
GU.LSD.HHN. ML:1.1 2.2750385E-5 0.1408 AML other m 2021-01-19T21:01:58.25
IV.MRGE.HHE. ML:1.1 2.286926E-5 0.0768 AML other m 2021-01-19T21:01:56.92
IV.MRGE.HHN. ML:1.2 3.4282785E-5 0.064 AML other m 2021-01-19T21:01:56.88
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