Earthquake with magnitude of ML 2.1 on date 12-05-2019 and time 23:31:50 (Italy) in region 1 km E Castelmagno (CN)

A magnitude ML 2.1 earthquake occured in region: 1 km E Castelmagno (CN), on

  • 12-05-2019 21:31:50 (UTC)
  • 12-05-2019 23:31:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.41, 7.23 at 13 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
Castelmagno CN 1 66 66
Pradleves CN 5 250 316
Monterosso Grana CN 8 505 821
Celle di Macra CN 9 100 921
Cartignano CN 9 190 1111
San Damiano Macra CN 9 430 1541
Macra CN 11 59 1600
Aisone CN 11 248 1848
Marmora CN 12 68 1916
Roccabruna CN 12 1585 3501
Demonte CN 12 2003 5504
Montemale di Cuneo CN 12 241 5745
Vinadio CN 12 644 6389
Valgrana CN 12 786 7175
Dronero CN 13 7035 14210
Canosio CN 13 80 14290
Stroppo CN 13 103 14393
Valloriate CN 14 109 14502
Sambuco CN 14 92 14594
Villar San Costanzo CN 15 1547 16141
Rittana CN 15 109 16250
Prazzo CN 16 170 16420
Caraglio CN 16 6836 23256
Moiola CN 16 234 23490
Gaiola CN 17 582 24072
Bernezzo CN 17 4104 28176
Pietraporzio CN 17 77 28253
Valmala CN 18 52 28305
Elva CN 18 97 28402
Frassino CN 18 265 28667
Melle CN 19 292 28959
Roccasparvera CN 19 741 29700
Sampeyre CN 19 1022 30722
Cervasca CN 19 5013 35735
Valdieri CN 20 935 36670

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km W of Cuneo (56081 inhabitants)
75 Km SW of Moncalieri (57294 inhabitants)
79 Km NW of Sanremo (54807 inhabitants)
82 Km SW of Torino (890529 inhabitants)
95 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 past 72 hours (3 days) from the time this page has been generated. 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 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
Rev 100 ML 2.1 2019-05-12
21:31:50
44.41 7.23 13 2019-05-12
21:38:20
Sala Sismica INGV-Roma 68488201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-05-12 21:31:50 ± 0.13
Latitude 44.41 ± 0.01
Longitude 7.23 ± 0.01
Depth (km) 13 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 68488201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1369
Semi-minor axis of confidence ellipse (meter) 141
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) 1370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.12501
Epicentral distance of station farthest from the epicenter (degree) 1.08368
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 68488201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-05-12 21:38:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
RD.ORIF.BHE. 2019-05-12T21:32:24.77 0.6 undecidable manual S 298 1.0837 91 -0.35 38
GU.PCP.HHE. 2019-05-12T21:32:20.99 0.6 undecidable manual S 82 0.9488 91 -0.14 40
RD.ORIF.BHE. 2019-05-12T21:32:11.30 0.1 undecidable manual P 298 1.0837 91 0.78 70
GU.RRL.HHZ. 2019-05-12T21:32:10.06 0.6 undecidable manual S 329 0.5971 92 -0.65 38
GU.ROTM.HHE. 2019-05-12T21:32:08.51 0.1 undecidable manual P 61 0.9128 91 0.92 71
IT.ACQ.HGE. 2019-05-12T21:32:08.24 1.0 undecidable manual P 72 0.9209 91 0.51 20
GU.PCP.HHE. 2019-05-12T21:32:08.44 0.3 undecidable manual P 82 0.9488 91 0.23 64
GU.GBOS.HHZ. 2019-05-12T21:32:06.29 0.6 undecidable manual S 111 0.4694 93 -0.64 37
FR.SAOF.HHE. 2019-05-12T21:32:06.47 0.6 undecidable manual S 151 0.4838 92 -0.9 33
IV.MONC.HHE. 2019-05-12T21:32:06.59 1.0 undecidable manual P 37 0.8283 91 0.44 21
GU.BURY.HHE. 2019-05-12T21:32:03.77 0.6 undecidable manual P 159 0.6709 92 0.32 44
GU.RSP.HHZ. 2019-05-12T21:32:03.75 1.0 positive manual P 2 0.7374 91 -0.85 17
GU.RRL.HHZ. 2019-05-12T21:32:02.14 0.1 undecidable manual P 329 0.5971 92 -0.05 90
FR.SAOF.HHE. 2019-05-12T21:32:00.33 0.1 undecidable manual P 151 0.4838 92 0.07 92
GU.ENR.HHZ. 2019-05-12T21:31:59.38 0.6 undecidable manual S 143 0.2293 98 -0.47 42
GU.GBOS.HHZ. 2019-05-12T21:31:59.96 0.1 positive manual P 111 0.4694 93 -0.05 90
GU.BHB.HHZ. 2019-05-12T21:31:58.54 0.1 undecidable manual P 3 0.4254 93 -0.72 75
GU.STV.HHZ. 2019-05-12T21:31:58.08 0.6 undecidable manual S 157 0.179 103 -0.3 45
GU.PZZ.HHZ. 2019-05-12T21:31:56.51 0.6 undecidable manual S 321 0.125 117 -0.35 47
GU.STV.HHZ. 2019-05-12T21:31:55.23 0.1 undecidable manual P 157 0.179 103 0.16 100
GU.ENR.HHZ. 2019-05-12T21:31:55.99 0.1 undecidable manual P 143 0.2293 98 0.07 97
GU.PZZ.HHZ. 2019-05-12T21:31:54.38 0.1 negative manual P 321 0.125 117 0.19 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:2.4 0.002195 1.28 AML other m 2019-05-12T21:31:57.01
GU.PZZ.HHE. ML:2.6 0.003235 1.6 AML other m 2019-05-12T21:31:57.84
GU.STV.HHN. ML:1.7 0.0003695 0.06 AML other m 2019-05-12T21:31:58.18
GU.STV.HHE. ML:1.8 0.0004495 0.26 AML other m 2019-05-12T21:31:58.14
GU.ENR.HHN. ML:2.5 0.00182 0.06 AML other m 2019-05-12T21:31:59.57
GU.ENR.HHE. ML:2.4 0.00132 0.04 AML other m 2019-05-12T21:31:59.87
GU.BHB.HHE. ML:1.4 7.225E-5 0.94 AML other m 2019-05-12T21:32:06.13
GU.BHB.HHN. ML:1.4 6.885E-5 0.24 AML other m 2019-05-12T21:32:06.76
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