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

A magnitude ML 2.0 earthquake occured in region: 3 km SW Roccavione (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) 44.3, 7.448 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
Roccavione CN 3 2761 2761
Roaschia CN 3 107 2868
Borgo San Dalmazzo CN 5 12468 15336
Valdieri CN 5 935 16271
Roccasparvera CN 5 741 17012
Moiola CN 5 234 17246
Gaiola CN 5 582 17828
Robilante CN 5 2306 20134
Rittana CN 7 109 20243
Vignolo CN 7 2600 22843
Valloriate CN 7 109 22952
Entracque CN 8 774 23726
Boves CN 9 9835 33561
Vernante CN 9 1178 34739
Cervasca CN 10 5013 39752
Bernezzo CN 10 4104 43856
Demonte CN 12 2003 45859
Caraglio CN 13 6836 52695
Cuneo CN 13 56081 108776
Valgrana CN 13 786 109562
Peveragno CN 14 5543 115105
Limone Piemonte CN 15 1485 116590
Monterosso Grana CN 16 505 117095
Montemale di Cuneo CN 17 241 117336
Beinette CN 18 3423 120759
Aisone CN 18 248 121007
Pradleves CN 19 250 121257
Chiusa di Pesio CN 19 3676 124933
Dronero CN 20 7035 131968

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SW of Cuneo (56081 inhabitants)
60 Km NW of Sanremo (54807 inhabitants)
80 Km S of Moncalieri (57294 inhabitants)
82 Km W of Savona (61345 inhabitants)
88 Km S of Torino (890529 inhabitants)
90 Km SW of Asti (76202 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
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire *

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.0 2020-11-04
07:37:11
44.3002 7.4478 11 2021-02-26
14:56:05
Bollettino Sismico Italiano INGV 84664181
Reviewed
Rev100
ML 2.0 2020-11-04
07:37:11
44.287 7.4337 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 44.3002 ± 0.0081
Longitude 7.4478 ± 0.0126
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 84664181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1161
Semi-minor axis of confidence ellipse (meter) 638
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) 1160
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.07374
Epicentral distance of station farthest from the epicenter (degree) 2.08193
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 84664181
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-25 03:49:28

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
RD.PGF.BHZ. 2020-11-04T07:37:45.40 0.3 undecidable manual P 147 2.0819 38 -1.11 26
GU.RRL.HHZ. 2020-11-04T07:37:36.83 0.6 undecidable manual S 323 0.777 50 0.19 43
IV.QLNO.HHZ. 2020-11-04T07:37:32.06 0.6 undecidable manual S 88 0.643 50 -0.6 40
GU.CANO.HHZ. 2020-11-04T07:37:29.67 0.6 undecidable manual S 99 0.5729 50 -0.91 36
GU.BURY.HNN. 2020-11-04T07:37:29.27 0.6 undecidable manual S 171 0.5234 50 0.15 46
IV.MONC.HHZ. 2020-11-04T07:37:28.89 0.3 undecidable manual P 24 0.8445 50 1.9 28
IV.IMI.HHZ. 2020-11-04T07:37:28.58 0.6 undecidable manual S 140 0.5036 50 0.04 47
GU.BHB.HHZ. 2020-11-04T07:37:28.93 0.6 undecidable manual S 346 0.5513 50 -1.01 34
MN.BNI.HHZ. 2020-11-04T07:37:28.96 0.3 undecidable manual P 324 0.929 50 0.53 58
GU.RORO.HHZ. 2020-11-04T07:37:27.46 0.6 undecidable manual S 113 0.4811 50 -0.42 44
GU.PCP.HHZ. 2020-11-04T07:37:27.18 0.3 undecidable manual P 73 0.8193 50 0.62 57
GU.RRL.HHZ. 2020-11-04T07:37:26.08 0.1 undecidable manual P 323 0.777 50 0.25 85
GU.RSP.HHZ. 2020-11-04T07:37:26.62 0.1 undecidable manual P 351 0.8571 50 -0.58 77
IV.QLNO.HHZ. 2020-11-04T07:37:23.83 0.3 undecidable manual P 88 0.643 50 0.3 65
GU.BURY.HNN. 2020-11-04T07:37:22.10 0.1 undecidable manual P 171 0.5234 50 0.61 82
GU.PZZ.HHZ. 2020-11-04T07:37:22.59 0.1 undecidable manual S 311 0.3139 50 -0.34 92
GU.CANO.HHZ. 2020-11-04T07:37:22.67 0.1 undecidable manual P 99 0.5729 50 0.34 88
FR.SAOF.HHZ.00 2020-11-04T07:37:22.61 0.6 undecidable manual S 166 0.3229 50 -0.58 43
GU.GBOS.HHZ. 2020-11-04T07:37:21.09 0.6 undecidable manual S 102 0.2869 50 -1.02 36
GU.BHB.HHZ. 2020-11-04T07:37:21.80 0.1 undecidable manual P 346 0.5513 50 -0.16 91
IV.IMI.HHZ. 2020-11-04T07:37:21.53 0.1 negative manual P 140 0.5036 50 0.37 88
GU.RORO.HHZ. 2020-11-04T07:37:20.92 0.1 undecidable manual P 113 0.4811 50 0.15 93
FR.SAOF.HHZ.00 2020-11-04T07:37:18.32 0.1 negative manual P 166 0.3229 50 0.26 94
GU.GBOS.HHZ. 2020-11-04T07:37:17.35 0.1 undecidable manual P 102 0.2869 50 -0.09 98
GU.PZZ.HHZ. 2020-11-04T07:37:17.98 0.1 undecidable manual P 311 0.3139 50 0.07 98
GU.STV.HHZ. 2020-11-04T07:37:16.06 0.1 undecidable manual S 238 0.1025 133 -0.41 95
GU.ENR.HHZ. 2020-11-04T07:37:15.29 0.1 undecidable manual S 197 0.0737 142 -0.43 95
GU.STV.HHZ. 2020-11-04T07:37:14.46 0.1 positive manual P 238 0.1025 133 0.28 97
GU.ENR.HHZ. 2020-11-04T07:37:13.92 0.1 negative manual P 197 0.0737 142 0.17 100
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:1.9 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:2.1 0.00050587315 0.16 AML other m 2020-11-04T07:37:23.06
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:1.8 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:0 3.295E-5 0.72 AML other m 2020-11-04T07:37:58.06
RD.ORIF.BHN. ML:0 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
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
Waveforms Seismic signals in miniseed + resp format Download