Earthquake with magnitude of ML 1.0 on date 27-01-2022 and time 05:53:43 (Italy) in region 5 km E Challand Saint Anselme (AO)

A magnitude ML 1.0 earthquake occured in region: 5 km E Challand Saint Anselme (AO), on

  • 27-01-2022 04:53:43 (UTC)
  • 27-01-2022 05:53:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.7190, 7.7990 at 12 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
Challand-Saint-Anselme AO 5 751 751
Issime AO 6 423 1174
Gaby AO 7 468 1642
Brusson AO 7 897 2539
Gressoney-Saint-Jean AO 7 807 3346
Emarèse AO 8 226 3572
Challand-Saint-Victor AO 8 564 4136
Fontainemore AO 9 440 4576
Montjovet AO 10 1801 6377
Verrès AO 10 2696 9073
Arnad AO 10 1273 10346
Lillianes AO 10 462 10808
Issogne AO 11 1400 12208
Champdepraz AO 12 712 12920
Perloz AO 12 477 13397
Saint-Vincent AO 12 4660 18057
Gressoney-La-Trinité AO 12 303 18360
Piedicavallo BI 13 193 18553
Hône AO 13 1166 19719
Bard AO 13 119 19838
Donnas AO 13 2563 22401
Pont-Saint-Martin AO 13 3840 26241
Ayas AO 14 1401 27642
Rosazza BI 15 108 27750
Châtillon AO 15 4772 32522
Carema TO 15 774 33296
Pontboset AO 15 185 33481
Pontey AO 16 817 34298
Campiglia Cervo BI 17 505 34803
Champorcher AO 17 388 35191
La Magdeleine AO 17 109 35300
Quincinetto TO 18 1031 36331
Riva Valdobbia VC 18 258 36589
Rassa VC 18 71 36660
Alagna Valsesia VC 19 408 37068
Antey-Saint-André AO 19 602 37670
Settimo Vittone TO 19 1560 39230
Saint-Denis AO 19 378 39608
Chamois AO 19 97 39705
Chambave AO 20 931 40636
Tavagnasco TO 20 791 41427
Torgnon AO 20 558 41985

Municipalities with at least 50000 inhabitants

An earthquake occurred to
71 Km W of Novara (104380 inhabitants)
72 Km N of Torino (890529 inhabitants)
78 Km W of Gallarate (53343 inhabitants)
80 Km N of Moncalieri (57294 inhabitants)
80 Km W of Varese (80799 inhabitants)
83 Km W of Busto Arsizio (83106 inhabitants)
88 Km W of Legnano (60262 inhabitants)
94 Km W of Vigevano (63310 inhabitants)
96 Km NW of Asti (76202 inhabitants)
99 Km W of Rho (50434 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.0 2022-01-27
04:53:43
45.7187 7.7993 12 2022-01-27
05:02:45
Sala Sismica INGV-Roma 100218511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-27 04:53:43 ± 0.17
Latitude 45.7187 ± 0.0063
Longitude 7.7993 ± 0.0193
Depth (km) 12 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 100218511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1280
Semi-minor axis of confidence ellipse (meter) 813
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 92
Circular confidence region, given by single value of horizontal uncertainty (meter) 1280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171
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) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.16368
Epicentral distance of station farthest from the epicenter (degree) 0.53240
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 100218511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-27 05:02:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.LSD.HHZ. 2022-01-27T04:54:00.73 0.3 undecidable manual S 241 0.5324 91 -0.52 64
GU.REMY.HHE. 2022-01-27T04:53:59.17 0.6 undecidable manual S 285 0.4641 91 -0.04 48
CH.DIX.HHE. 2022-01-27T04:53:58.16 0.6 undecidable manual S 323 0.4524 91 -0.71 40
CH.MMK.HHE. 2022-01-27T04:53:55.20 0.6 undecidable manual S 19 0.3507 92 -0.67 41
IV.MRGE.HHZ. 2022-01-27T04:53:54.00 0.6 undecidable manual P 276 0.5171 91 0.72 39
GU.LSD.HHZ. 2022-01-27T04:53:53.92 0.1 undecidable manual P 241 0.5324 91 0.38 88
GU.REMY.HHE. 2022-01-27T04:53:52.87 0.1 undecidable manual P 285 0.4641 91 0.51 86
CH.DIX.HHE. 2022-01-27T04:53:52.42 0.1 undecidable manual P 323 0.4524 91 0.25 92
GU.CIRO.HHZ. 2022-01-27T04:53:51.15 0.6 undecidable manual S 234 0.1996 95 -0.23 48
GU.TRAV.HHZ. 2022-01-27T04:53:51.01 0.6 undecidable manual S 190 0.2095 94 -0.68 42
CH.MMK.HHE. 2022-01-27T04:53:50.44 0.1 undecidable manual P 19 0.3507 92 0 98
GU.SATI.HHZ. 2022-01-27T04:53:50.12 0.6 undecidable manual S 17 0.1637 98 -0.22 48
GU.TRAV.HHZ. 2022-01-27T04:53:48.08 0.1 positive manual P 190 0.2095 94 0.06 100
GU.SATI.HHZ. 2022-01-27T04:53:47.27 1.0 undecidable manual P 17 0.1637 98 0.03 25
GU.CIRO.HHZ. 2022-01-27T04:53:47.93 0.6 undecidable manual P 234 0.1996 95 0.09 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.SATI.HHE. ML:0.8 0.0000443 0.54 AML other m 2022-01-27T04:53:50.27
GU.TRAV.HHE. ML:1.2 0.0000986 0.32 AML other m 2022-01-27T04:53:51.10
GU.SATI.HHN. ML:0.8 0.000042499999999999996 0.46 AML other m 2022-01-27T04:53:51.12
GU.TRAV.HHN. ML:1.2 0.00009995 0.16 AML other m 2022-01-27T04:53:51.11
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols 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