Earthquake with magnitude of ML 1.1 on date 25-01-2020 and time 23:22:14 (Italy) in region 2 km SE Valmala (CN)

A magnitude ML 1.1 earthquake occured in region: 2 km SE Valmala (CN), on

  • 25-01-2020 22:22:14 (UTC)
  • 25-01-2020 23:22:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.54, 7.36 at 2 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
Valmala CN 2 52 52
Brossasco CN 4 1084 1136
Venasca CN 4 1437 2573
Melle CN 4 292 2865
Villar San Costanzo CN 6 1547 4412
Rossana CN 6 908 5320
Isasca CN 6 76 5396
Roccabruna CN 7 1585 6981
Dronero CN 8 7035 14016
Frassino CN 8 265 14281
Brondello CN 8 290 14571
Cartignano CN 9 190 14761
Piasco CN 9 2774 17535
Busca CN 9 10181 27716
San Damiano Macra CN 10 430 28146
Martiniana Po CN 10 734 28880
Pagno CN 10 585 29465
Costigliole Saluzzo CN 11 3375 32840
Gambasca CN 11 371 33211
Montemale di Cuneo CN 11 241 33452
Castellar CN 12 295 33747
Verzuolo CN 12 6459 40206
Sanfront CN 13 2395 42601
Rifreddo CN 13 1078 43679
Manta CN 13 3787 47466
Revello CN 14 4262 51728
Caraglio CN 14 6836 58564
Valgrana CN 14 786 59350
Monterosso Grana CN 14 505 59855
Pradleves CN 14 250 60105
Villafalletto CN 14 2925 63030
Sampeyre CN 14 1022 64052
Macra CN 15 59 64111
Celle di Macra CN 15 100 64211
Tarantasca CN 15 2122 66333
Saluzzo CN 16 16960 83293
Envie CN 16 2074 85367
Bernezzo CN 17 4104 89471
Vottignasco CN 18 537 90008
Paesana CN 18 2784 92792
Castelmagno CN 18 66 92858
Lagnasco CN 19 1453 94311
Centallo CN 19 6954 101265
Stroppo CN 19 103 101368
Cervasca CN 19 5013 106381

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NW of Cuneo (56081 inhabitants)
58 Km SW of Moncalieri (57294 inhabitants)
65 Km SW of Torino (890529 inhabitants)
78 Km SW of Asti (76202 inhabitants)
86 Km NW of Sanremo (54807 inhabitants)
93 Km W of Savona (61345 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
Rev 100 ML 1.1 2020-01-25
22:22:14
44.54 7.36 2 2020-01-25
22:29:11
Sala Sismica INGV-Roma 75854471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-25 22:22:14 ± 0.2
Latitude 44.54 ± 0.01
Longitude 7.36 ± 0.03
Depth (km) 2 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75854471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1637
Semi-minor axis of confidence ellipse (meter) 1252
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 260
Circular confidence region, given by single value of horizontal uncertainty (meter) 1640
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.17627
Epicentral distance of station farthest from the epicenter (degree) 0.6583
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0
Num. used stations 2
Type of magnitude ML
Reference to an origin 75854471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-25 22:29:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.RORO.HHE. 2020-01-25T22:22:28.24 0.6 undecidable manual P 130 0.6583 50 -0.55 47
GU.BHB.HHZ. 2020-01-25T22:22:26.15 0.3 undecidable manual S 347 0.3076 93 -0.65 63
GU.ENR.HHZ. 2020-01-25T22:22:26.53 0.3 undecidable manual S 172 0.3112 93 -0.42 68
GU.STV.HHZ. 2020-01-25T22:22:25.59 0.3 undecidable manual S 185 0.2905 93 -0.56 67
GU.GBOS.HHE. 2020-01-25T22:22:25.42 0.6 undecidable manual P 130 0.4506 92 0.45 44
GU.BHB.HHZ. 2020-01-25T22:22:22.02 0.1 undecidable manual P 347 0.3076 93 0.23 100
GU.ENR.HHZ. 2020-01-25T22:22:22.18 0.1 undecidable manual P 172 0.3112 93 0.31 99
GU.STV.HHZ. 2020-01-25T22:22:21.74 0.1 undecidable manual P 185 0.2905 93 0.33 98
GU.PZZ.HHZ. 2020-01-25T22:22:21.33 0.3 undecidable manual S 261 0.1763 96 -0.44 74
GU.PZZ.HHZ. 2020-01-25T22:22:19.17 0.1 undecidable manual P 261 0.1763 96 0.29 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:1.2 0.000127 0.34 AML other m 2020-01-25T22:22:21.76
GU.PZZ.HHE. ML:1.1 0.0001129 1.8 AML other m 2020-01-25T22:22:22.96
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