Earthquake with magnitude of ML 1.5 on date 13-10-2021 and time 22:28:19 (Italy) in region 5 km SW Monterosso Grana (CN)

A magnitude ML 1.5 earthquake occured in region: 5 km SW Monterosso Grana (CN), on

  • 13-10-2021 20:28:19 (UTC)
  • 13-10-2021 22:28:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.368, 7.303 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
Monterosso Grana CN 5 505 505
Demonte CN 6 2003 2508
Pradleves CN 6 250 2758
Valloriate CN 7 109 2867
Valgrana CN 8 786 3653
Rittana CN 8 109 3762
Castelmagno CN 9 66 3828
Moiola CN 9 234 4062
Aisone CN 9 248 4310
Gaiola CN 9 582 4892
Montemale di Cuneo CN 10 241 5133
Bernezzo CN 11 4104 9237
Roccasparvera CN 11 741 9978
Caraglio CN 12 6836 16814
Vinadio CN 12 644 17458
Dronero CN 12 7035 24493
Cartignano CN 12 190 24683
Valdieri CN 12 935 25618
Roccabruna CN 13 1585 27203
Cervasca CN 13 5013 32216
Vignolo CN 13 2600 34816
San Damiano Macra CN 14 430 35246
Villar San Costanzo CN 14 1547 36793
Borgo San Dalmazzo CN 15 12468 49261
Roccavione CN 15 2761 52022
Entracque CN 16 774 52796
Celle di Macra CN 16 100 52896
Roaschia CN 16 107 53003
Macra CN 18 59 53062
Sambuco CN 18 92 53154
Robilante CN 19 2306 55460
Marmora CN 19 68 55528
Valmala CN 20 52 55580

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km W of Cuneo (56081 inhabitants)
72 Km NW of Sanremo (54807 inhabitants)
77 Km SW of Moncalieri (57294 inhabitants)
84 Km SW of Torino (890529 inhabitants)
93 Km SW of Asti (76202 inhabitants)
94 Km W of Savona (61345 inhabitants)
Recent and historical seismicity
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
Reviewed
Rev100
ML 1.5 2021-10-13
20:28:19
44.3678 7.3032 10 2021-10-13
20:46:51
Sala Sismica INGV-Roma 96514741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-13 20:28:19 ± 0.13
Latitude 44.3678 ± 0.0117
Longitude 7.3032 ± 0.0226
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 96514741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2119
Semi-minor axis of confidence ellipse (meter) 385
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 2120
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 144
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.12411
Epicentral distance of station farthest from the epicenter (degree) 0.90292
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 96514741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-13 20:46:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.ROTM.HHZ. 2021-10-13T20:28:37.31 0.6 positive manual P 57 0.8885 50 1.32 28
IV.MONC.HHZ. 2021-10-13T20:28:36.12 0.6 positive manual P 32 0.8337 50 1.06 33
GU.PCP.HHZ. 2021-10-13T20:28:36.80 0.1 undecidable manual P 78 0.9029 50 0.55 80
IV.QLNO.HHZ. 2021-10-13T20:28:33.86 0.6 undecidable manual P 93 0.7464 50 0.29 44
GU.CANO.HHZ. 2021-10-13T20:28:32.55 0.1 undecidable manual P 103 0.6871 50 -0.01 95
GU.GBOS.HHZ. 2021-10-13T20:28:32.85 0.3 undecidable manual S 108 0.4038 50 -1.05 54
GU.RRL.HHZ. 2021-10-13T20:28:32.21 0.1 undecidable manual P 327 0.6628 50 0.08 94
GU.RSP.HHZ. 2021-10-13T20:28:32.87 0.6 undecidable manual P 358 0.7806 50 -1.28 30
GU.IMI.HHZ. 2021-10-13T20:28:31.70 1.0 positive manual P 137 0.6232 50 0.25 23
GU.BURY.HHZ. 2021-10-13T20:28:31.52 0.1 undecidable manual P 163 0.6124 50 0.24 92
GU.RORO.HHZ. 2021-10-13T20:28:31.17 0.3 negative manual P 115 0.6034 50 0.05 72
GU.MGRO.HHZ. 2021-10-13T20:28:29.21 0.1 negative manual P 132 0.4865 50 0.09 98
FR.SAOF.HHZ.00 2021-10-13T20:28:28.07 0.3 positive manual P 155 0.4218 50 0.06 75
GU.PZZ.HHZ. 2021-10-13T20:28:27.29 0.3 undecidable manual S 316 0.1925 115 -0.17 76
GU.GBOS.HHZ. 2021-10-13T20:28:27.62 0.3 negative manual P 108 0.4038 50 -0.1 74
GU.BHB.HHZ. 2021-10-13T20:28:27.89 0.1 undecidable manual P 357 0.4685 50 -0.92 76
GU.STV.HHZ. 2021-10-13T20:28:25.12 0.3 undecidable manual S 172 0.1241 126 -0.06 79
GU.ENR.HHZ. 2021-10-13T20:28:25.99 0.3 undecidable manual S 149 0.161 119 -0.39 73
GU.PZZ.HHZ. 2021-10-13T20:28:24.25 0.1 positive manual P 316 0.1925 115 0.25 100
GU.ENR.HHZ. 2021-10-13T20:28:23.48 0.6 undecidable manual P 149 0.161 119 0.11 52
GU.STV.HHZ. 2021-10-13T20:28:22.92 1.0 undecidable manual P 172 0.1241 126 0.25 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.STV.HHE. ML:1.6 0.000372 0.1 AML other m 2021-10-13T20:28:25.27
GU.STV.HHN. ML:1.4 0.000275 0.36 AML other m 2021-10-13T20:28:25.26
GU.ENR.HHE. ML:1.6 0.000293 0.12 AML other m 2021-10-13T20:28:26.10
GU.ENR.HHN. ML:1.5 0.0002685 0.98 AML other m 2021-10-13T20:28:26.25
GU.PZZ.HHN. ML:1.8 0.000434 0.32 AML other m 2021-10-13T20:28:27.72
GU.PZZ.HHE. ML:1.6 0.0002905 0.54 AML other m 2021-10-13T20:28:27.76
GU.GBOS.HHN. ML:1.6 0.000137 0.38 AML other m 2021-10-13T20:28:33.40
GU.GBOS.HHE. ML:1.6 0.00010575 0.4 AML other m 2021-10-13T20:28:33.61
FR.SAOF.HHE.00 ML:1.3 5.425E-5 0.56 AML other m 2021-10-13T20:28:34.75
GU.BHB.HHN. ML:1.2 3.265E-5 0.8 AML other m 2021-10-13T20:28:35.99
GU.BHB.HHE. ML:1.2 3.375E-5 0.96 AML other m 2021-10-13T20:28:35.74
FR.SAOF.HHN.00 ML:1.1 3.37E-5 0.82 AML other m 2021-10-13T20:28:36.09
GU.MGRO.HHE. ML:1.2 3.825E-5 0.52 AML other m 2021-10-13T20:28:36.24
GU.MGRO.HHN. ML:1.4 5.87E-5 0.42 AML other m 2021-10-13T20:28:37.22
GU.CANO.HHN. ML:1.7 8.095E-5 0.24 AML other m 2021-10-13T20:28:42.40
GU.CANO.HHE. ML:1.9 0.0001239 0.92 AML other m 2021-10-13T20:28:43.28
GU.PCP.HHE. ML:1.4 2.595E-5 1.36 AML other m 2021-10-13T20:28:49.04
GU.PCP.HHN. ML:1.6 3.535E-5 0.82 AML other m 2021-10-13T20:28:50.82
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download