Earthquake with magnitude of ML 2.0 on date 05-10-2021 and time 02:43:20 (Italy) in region 5 km SE Corte Brugnatella (PC)

A magnitude ML 2.0 earthquake occured in region: 5 km SE Corte Brugnatella (PC), on

  • 05-10-2021 00:43:20 (UTC)
  • 05-10-2021 02:43:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.678, 9.423 at 8 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
Corte Brugnatella PC 5 586 586
Cerignale PC 6 127 713
Ferriere PC 7 1294 2007
Coli PC 7 879 2886
Ottone PC 9 516 3402
Bobbio PC 10 3577 6979
Zerba PC 11 77 7056
Farini PC 12 1290 8346
Gorreto GE 13 97 8443
Brallo di Pregola PV 13 599 9042
Santo Stefano d'Aveto GE 15 1126 10168
Rovegno GE 16 554 10722
Rezzoaglio GE 17 995 11717
Fontanigorda GE 17 277 11994
Menconico PV 17 360 12354
Santa Margherita di Staffora PV 18 473 12827
Bettola PC 18 2828 15655
Romagnese PV 19 687 16342
Fascia GE 19 81 16423

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km SW of Piacenza (102191 inhabitants)
49 Km NE of Genova (586655 inhabitants)
60 Km SE of Pavia (72576 inhabitants)
69 Km E of Alessandria (93943 inhabitants)
69 Km SW of Cremona (71901 inhabitants)
71 Km NW of La Spezia (93959 inhabitants)
73 Km W of Parma (192836 inhabitants)
84 Km SE of Vigevano (63310 inhabitants)
85 Km E of Savona (61345 inhabitants)
86 Km NW of Carrara (63133 inhabitants)
90 Km S of Milano (1345851 inhabitants)
91 Km NW of Massa (69479 inhabitants)
96 Km W of Reggio nell'Emilia (171345 inhabitants)
96 Km S of Sesto San Giovanni (81608 inhabitants)
99 Km E of Asti (76202 inhabitants)
99 Km SE of Rho (50434 inhabitants)
99 Km S of Cinisello Balsamo (75078 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 3 days preceding this event

Earthquakes of the 3 days preceding this event

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 90 days preceding this event

Earthquakes of the 90 days preceding this event

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 from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

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 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 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
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 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 2021-10-05
00:43:20
44.678 9.4232 8 2021-10-05
00:54:04
Sala Sismica INGV-Roma 96224721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-05 00:43:20 ± 0.16
Latitude 44.6780 ± 0.0108
Longitude 9.4232 ± 0.0152
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96224721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1316
Semi-minor axis of confidence ellipse (meter) 951
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 325
Circular confidence region, given by single value of horizontal uncertainty (meter) 1320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 17
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
Epicentral distance of station farthest from the epicenter (degree) 1.31661
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 13
Magnitude information

ML:2

Field Value
Value 2
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 96224721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-05 00:54:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.MGRO.HHE. 2021-10-05T00:43:44.40 0.3 undecidable manual P 242 1.3166 50 -0.13 57
GU.GBOS.HHE. 2021-10-05T00:43:42.87 0.3 undecidable manual P 249 1.2105 50 0.16 58
GU.RORO.HHE. 2021-10-05T00:43:41.30 0.3 undecidable manual P 240 1.1215 50 0.11 60
GU.CANO.HHE. 2021-10-05T00:43:38.83 0.3 undecidable manual P 241 0.9677 50 0.27 60
IV.QLNO.HHE. 2021-10-05T00:43:37.44 0.1 undecidable manual P 246 0.8454 50 0.98 65
IV.MSSA.HHZ. 2021-10-05T00:43:34.61 0.3 undecidable manual S 169 0.3678 50 0.35 67
GU.RNCA.HHZ. 2021-10-05T00:43:34.16 0.3 undecidable manual S 239 0.3948 50 -0.89 55
GU.PCP.HHE. 2021-10-05T00:43:32.51 0.3 undecidable manual P 258 0.6394 50 -0.43 63
IV.GENL.EHZ. 2021-10-05T00:43:30.10 3.0 undecidable manual P 0
GU.GRAM.HHZ. 2021-10-05T00:43:30.55 0.1 undecidable manual P 112 0.4937 50 0.1 92
IV.SARZ.HNZ. 2021-10-05T00:43:29.85 0.1 undecidable manual P 298 0.4083 50 0.87 74
GU.RNCA.HHZ. 2021-10-05T00:43:28.27 0.1 undecidable manual P 239 0.3948 50 -0.48 87
IT.GNV.HGZ. 2021-10-05T00:43:28.92 0.1 undecidable manual P 235 0.4281 50 -0.4 88
IV.MSSA.HHZ. 2021-10-05T00:43:27.94 0.3 undecidable manual P 169 0.3678 50 -0.35 67
GU.GORR.HHZ. 2021-10-05T00:43:25.57 0.3 undecidable manual S 233 0.1169 120 0.22 73
IV.BOB.HHZ. 2021-10-05T00:43:24.39 0.1 undecidable manual S 11 0.0917 127 -0.16 99
GU.GORR.HHZ. 2021-10-05T00:43:23.22 0.1 undecidable manual P 233 0.1169 120 0.07 100
IV.BOB.HHZ. 2021-10-05T00:43:22.54 0.1 undecidable manual P 11 0.0917 127 -0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BOB.HHE. ML:2.4 0.00375 0.2 AML other m 2021-10-05T00:43:24.50
IV.BOB.HHN. ML:2.2 0.00223 0.44 AML other m 2021-10-05T00:43:24.43
GU.GORR.HHN. ML:1.9 0.0009275 0.16 AML other m 2021-10-05T00:43:25.73
GU.GORR.HHE. ML:2.1 0.00136 0.22 AML other m 2021-10-05T00:43:25.55
GU.GRAM.HHE. ML:1.8 0.000131 0.22 AML other m 2021-10-05T00:43:39.83
GU.GRAM.HHN. ML:1.8 0.0001535 0.62 AML other m 2021-10-05T00:43:40.62
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

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 miniseed + resp format Download