Earthquake with magnitude of ML 2.0 on date 04-11-2020 and time 08:37:11 (Italy) in region 3 km NW Roaschia (CN)

A magnitude ML 2.0 earthquake occured in region: 3 km NW Roaschia (CN), on

  • 04-11-2020 07:37:11 (UTC)
  • 04-11-2020 08:37:11 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.29, 7.43 at 11 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
Roaschia CN 3 107 107
Valdieri CN 3 935 1042
Roccavione CN 5 2761 3803
Moiola CN 5 234 4037
Entracque CN 6 774 4811
Gaiola CN 6 582 5393
Roccasparvera CN 6 741 6134
Robilante CN 6 2306 8440
Borgo San Dalmazzo CN 7 12468 20908
Valloriate CN 7 109 21017
Rittana CN 8 109 21126
Vignolo CN 9 2600 23726
Vernante CN 9 1178 24904
Boves CN 11 9835 34739
Cervasca CN 11 5013 39752
Demonte CN 11 2003 41755
Bernezzo CN 11 4104 45859
Valgrana CN 14 786 46645
Caraglio CN 15 6836 53481
Limone Piemonte CN 15 1485 54966
Cuneo CN 15 56081 111047
Peveragno CN 16 5543 116590
Monterosso Grana CN 16 505 117095
Aisone CN 17 248 117343
Montemale di Cuneo CN 18 241 117584
Pradleves CN 19 250 117834
Beinette CN 19 3423 121257

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km SW of Cuneo (56081 inhabitants)
59 Km NW of Sanremo (54807 inhabitants)
82 Km S of Moncalieri (57294 inhabitants)
84 Km W of Savona (61345 inhabitants)
90 Km S of Torino (890529 inhabitants)
92 Km SW of Asti (76202 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 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. 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 in the 90 days preceding the time of the current earthquake occurrence, 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

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
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 2.0 2020-11-04
07:37:11
44.29 7.43 11 2020-11-04
07:56:07
Sala Sismica INGV-Roma 84441011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-04 07:37:11 ± 0.13
Latitude 44.29 ± 0.01
Longitude 7.43 ± 0.02
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84441011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1491
Semi-minor axis of confidence ellipse (meter) 764
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 227
Circular confidence region, given by single value of horizontal uncertainty (meter) 1490
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 2.07653
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 16
Magnitude information

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 84441011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-04 07:56:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VBKN.HHZ. 2020-11-04T07:38:49.35 3.0 negative manual Pn 7.16 0
OT.OT11.EHZ. 2020-11-04T07:38:49.04 3.0 negative manual Pn 3.89 0
IV.VIVA.HHZ. 2020-11-04T07:38:36.96 3.0 positive manual Pg 16.139999 0
IV.ARRO.EHZ. 2020-11-04T07:38:33.51 3.0 undecidable manual Pg 18.5 0
IV.FDMO.HHZ. 2020-11-04T07:38:28.73 3.0 negative manual Pg 13.1 0
IV.MNTT.EHZ. 2020-11-04T07:38:24.89 3.0 negative manual Pn 4.51 0
GU.RIBO.EHZ.01 2020-11-04T07:38:08.35 3.0 undecidable manual P 0
RD.PGF.BHZ. 2020-11-04T07:37:45.41 0.1 undecidable manual P 146 2.0765 54 -1.05 36
MN.BNI.HHZ. 2020-11-04T07:37:29.04 0.3 undecidable manual P 325 0.9344 90 0.45 59
GU.BHB.HHZ. 2020-11-04T07:37:29.74 0.6 undecidable manual S 348 0.5612 90 -0.54 41
IV.MONC.HHZ. 2020-11-04T07:37:28.97 0.3 undecidable manual P 24 0.8607 90 1.64 33
GU.PCP.HHZ. 2020-11-04T07:37:27.58 0.3 undecidable manual P 72 0.8328 90 0.73 53
GU.RORO.HHZ. 2020-11-04T07:37:27.79 0.3 undecidable manual S 111 0.4856 90 -0.24 69
GU.RSP.HHZ. 2020-11-04T07:37:26.73 0.1 undecidable manual P 352 0.8687 90 -0.74 71
GU.RRL.HHZ. 2020-11-04T07:37:26.25 0.1 undecidable manual P 324 0.7815 90 0.28 85
IV.QLNO.HHZ. 2020-11-04T07:37:24.01 0.1 undecidable manual P 86 0.6538 90 0.23 87
FR.SAOF.HHZ.00 2020-11-04T07:37:22.84 0.3 undecidable manual S 164 0.313 91 -0.07 73
GU.CANO.HHZ. 2020-11-04T07:37:22.67 0.1 undecidable manual P 98 0.581 90 0.13 90
GU.PZZ.HHZ. 2020-11-04T07:37:22.61 0.3 undecidable manual S 314 0.3157 91 -0.39 67
IV.IMI.HHZ. 2020-11-04T07:37:21.53 0.1 undecidable manual P 139 0.5 90 0.37 87
GU.BHB.HHZ. 2020-11-04T07:37:21.90 0.1 undecidable manual P 348 0.5612 90 -0.31 87
GU.GBOS.HHZ. 2020-11-04T07:37:21.12 0.3 undecidable manual S 99 0.2941 91 -1.24 50
GU.RORO.HHZ. 2020-11-04T07:37:20.92 0.1 undecidable manual P 111 0.4856 90 0.01 94
FR.SAOF.HHZ.00 2020-11-04T07:37:18.36 0.1 undecidable manual P 164 0.313 91 0.41 90
GU.GBOS.HHZ. 2020-11-04T07:37:17.35 0.1 undecidable manual P 99 0.2941 91 -0.29 94
GU.PZZ.HHZ. 2020-11-04T07:37:17.98 0.1 undecidable manual P 314 0.3157 91 -0.02 97
GU.STV.HHZ. 2020-11-04T07:37:16.06 0.3 undecidable manual S 242 0.0872 123 -0.27 72
GU.ENR.HHZ. 2020-11-04T07:37:15.28 0.3 undecidable manual S 189 0.0612 139 -0.46 71
GU.STV.HHZ. 2020-11-04T07:37:14.47 0.1 undecidable manual P 242 0.0872 123 0.31 96
GU.ENR.HHZ. 2020-11-04T07:37:13.93 0.1 undecidable manual P 189 0.0612 139 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.ENR.HHE. ML:3.2 0.02225 0.06 AML other m 2020-11-04T07:37:15.33
GU.ENR.HHN. ML:3.1 0.01645 0.06 AML other m 2020-11-04T07:37:15.37
GU.STV.HHE. ML:1.9 0.000959 0.26 AML other m 2020-11-04T07:37:16.08
GU.STV.HHN. ML:1.9 0.000966 0.1 AML other m 2020-11-04T07:37:16.09
GU.GBOS.HHE. ML:2 0.0003835 0.14 AML other m 2020-11-04T07:37:21.20
GU.GBOS.HHN. ML:1.9 0.000381 0.2 AML other m 2020-11-04T07:37:21.66
GU.PZZ.HHE. ML:2.2 0.000672 0.36 AML other m 2020-11-04T07:37:22.99
GU.PZZ.HHN. ML:2.2 0.000747 0.8 AML other m 2020-11-04T07:37:23.46
FR.SAOF.HHN.00 ML:1.6 0.0001755 0.58 AML other m 2020-11-04T07:37:23.66
FR.SAOF.HHE.00 ML:1.8 0.000248 0.4 AML other m 2020-11-04T07:37:23.37
GU.RORO.HHN. ML:2.3 0.0004465 0.22 AML other m 2020-11-04T07:37:28.26
GU.RORO.HHE. ML:2.2 0.000377 0.86 AML other m 2020-11-04T07:37:29.57
IV.IMI.HHN. ML:1.9 0.000189 0.54 AML other m 2020-11-04T07:37:29.68
GU.CANO.HHN. ML:2.2 0.000283 0.28 AML other m 2020-11-04T07:37:30.38
IV.IMI.HHE. ML:1.7 0.000109 0.5 AML other m 2020-11-04T07:37:30.54
GU.CANO.HHE. ML:2.1 0.000226 0.34 AML other m 2020-11-04T07:37:32.20
IV.QLNO.HHN. ML:1.9 0.000118 0.18 AML other m 2020-11-04T07:37:32.35
IV.QLNO.HHE. ML:1.9 0.000115 0.22 AML other m 2020-11-04T07:37:33.44
GU.PCP.HHE. ML:1.6 4.52E-5 1.48 AML other m 2020-11-04T07:37:39.00
GU.RSP.HHN. ML:1.6 4.2E-5 1.36 AML other m 2020-11-04T07:37:39.19
GU.PCP.HHN. ML:1.7 5.435E-5 1.78 AML other m 2020-11-04T07:37:40.10
GU.RSP.HHE. ML:1.6 4.305E-5 0.46 AML other m 2020-11-04T07:37:42.60
IV.MONC.HHE. ML:2.1 0.0001405 0.58 AML other m 2020-11-04T07:37:43.83
IV.MONC.HHN. ML:2 0.00012 0.54 AML other m 2020-11-04T07:37:51.53
RD.PGF.BHE. ML:2 2.28E-5 0.44 AML other m 2020-11-04T07:37:57.30
RD.ORIF.BHE. ML:1.8 3.295E-5 0.72 AML other m 2020-11-04T07:37:58.06
RD.ORIF.BHN. ML:1.6 2.725E-5 0.44 AML other m 2020-11-04T07:38:03.24
RD.PGF.BHN. ML:2.1 3.02E-5 1.44 AML other m 2020-11-04T07:38:44.74
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