Earthquake with magnitude of ML 2.0 on date 05-10-2021 and time 02:43:20 (Italy) in region 4 km SE Corte Brugnatella (PC)

A magnitude ML 2.0 earthquake occured in region: 4 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) 44.6870, 9.4100 at 8 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
Corte Brugnatella PC 4 586 586
Cerignale PC 5 127 713
Coli PC 6 879 1592
Ferriere PC 8 1294 2886
Bobbio PC 9 3577 6463
Ottone PC 9 516 6979
Zerba PC 10 77 7056
Brallo di Pregola PV 12 599 7655
Gorreto GE 13 97 7752
Farini PC 13 1290 9042
Santo Stefano d'Aveto GE 16 1126 10168
Rovegno GE 16 554 10722
Menconico PV 16 360 11082
Santa Margherita di Staffora PV 16 473 11555
Fontanigorda GE 18 277 11832
Rezzoaglio GE 18 995 12827
Romagnese PV 18 687 13514
Bettola PC 19 2828 16342
Fascia GE 19 81 16423
Carrega Ligure AL 20 84 16507

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km SW of Piacenza (102191 inhabitants)
49 Km NE of Genova (586655 inhabitants)
59 Km SE of Pavia (72576 inhabitants)
68 Km E of Alessandria (93943 inhabitants)
69 Km SW of Cremona (71901 inhabitants)
73 Km NW of La Spezia (93959 inhabitants)
74 Km W of Parma (192836 inhabitants)
83 Km SE of Vigevano (63310 inhabitants)
85 Km E of Savona (61345 inhabitants)
87 Km NW of Carrara (63133 inhabitants)
89 Km S of Milano (1345851 inhabitants)
93 Km NW of Massa (69479 inhabitants)
95 Km S of Sesto San Giovanni (81608 inhabitants)
97 Km W of Reggio nell'Emilia (171345 inhabitants)
98 Km E of Asti (76202 inhabitants)
98 Km SE of Rho (50434 inhabitants)
98 Km S of Cinisello Balsamo (75078 inhabitants)
101 Km S of Monza (122671 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

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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.0 2021-10-05
00:43:20
44.6868 9.4103 9 2022-03-30
13:04:32
Bollettino Sismico Italiano INGV 100226851
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 ± 0.08
Latitude 44.6868 ± 0.0054
Longitude 9.4103 ± 0.0063
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100226851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 649
Semi-minor axis of confidence ellipse (meter) 331
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) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.08544
Epicentral distance of station farthest from the epicenter (degree) 1.31301
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 100226851
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-27 10:49:49

ML:2.0

Field Value
Value 2.0
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 241 1.3130 50 0.1 57
GU.GBOS.HHE. 2021-10-05T00:43:42.87 0.3 undecidable manual P 249 1.2051 50 0.42 55
GU.RORO.HHE. 2021-10-05T00:43:41.30 0.3 undecidable manual P 240 1.1179 50 0.34 57
GU.CANO.HHE. 2021-10-05T00:43:38.83 0.3 undecidable manual P 241 0.9641 50 0.5 57
GU.GRAM.HHZ. 2021-10-05T00:43:38.10 0.3 undecidable manual S 113 0.5054 50 0 70
IV.QLNO.HHE. 2021-10-05T00:43:36.49 0.6 undecidable manual P 245 0.8409 50 0.28 41
IT.GNV.HGZ. 2021-10-05T00:43:35.40 0.3 undecidable manual S 233 0.4254 50 -0.32 67
IV.PCN.EHZ. 2021-10-05T00:43:35.60 0.6 undecidable manual S 32 0.4137 50 0.24 45
GU.GENL.EHN. 2021-10-05T00:43:35.21 0.3 undecidable manual S 228 0.4209 50 -0.39 66
GU.RNCA.HHZ. 2021-10-05T00:43:34.40 0.3 undecidable manual S 237 0.3912 50 -0.32 67
IV.MSSA.HHZ. 2021-10-05T00:43:34.60 0.3 undecidable manual S 168 0.3786 50 0.28 68
GU.PCP.HHE. 2021-10-05T00:43:32.51 0.6 undecidable manual P 257 0.6322 50 -0.14 44
GU.GRAM.HHZ. 2021-10-05T00:43:30.55 0.3 undecidable manual P 113 0.5054 50 0.07 69
GU.GENL.EHN. 2021-10-05T00:43:29.35 0.6 undecidable manual P 228 0.4209 50 0.31 45
GU.RNCA.HHZ. 2021-10-05T00:43:28.27 0.1 undecidable manual P 237 0.3912 50 -0.26 91
IV.SARZ.HNZ. 2021-10-05T00:43:28.95 0.3 undecidable manual P 297 0.3957 50 0.35 67
IV.PCN.EHZ. 2021-10-05T00:43:28.43 0.6 undecidable manual P 32 0.4137 50 -0.47 43
IT.GNV.HGZ. 2021-10-05T00:43:28.92 0.6 undecidable manual P 233 0.4254 50 -0.19 46
IV.MSSA.HHZ. 2021-10-05T00:43:27.94 0.3 undecidable manual P 168 0.3786 50 -0.36 67
GU.GORR.HHZ. 2021-10-05T00:43:25.50 0.3 undecidable manual S 226 0.1160 123 0.08 75
IV.BOB.HHZ. 2021-10-05T00:43:24.30 0.3 undecidable manual S 18 0.0854 132 -0.18 73
GU.GORR.HHZ. 2021-10-05T00:43:23.22 0.1 positive manual P 226 0.1160 123 0.06 100
IV.BOB.HHZ. 2021-10-05T00:43:22.54 0.1 positive manual P 18 0.0854 132 -0.08 100
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:2.1 0.001970735 0.24 AML other m 2021-10-05T00:43:24.43
GU.GORR.HHN. ML:1.9 0.0009274999999999999 0.16 AML other m 2021-10-05T00:43:25.73
GU.GORR.HHE. ML:2.1 0.0013599999999999999 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 0.00015214065000000002 0.44 AML other m 2021-10-05T00:43:40.61
IV.BOB.HNE. ML:2.4 0.003603627 0.18 AML other m 2021-10-05T00:43:24.50
IV.BOB.HNN. ML:2.1 0.0017587850000000001 0.26 AML other m 2021-10-05T00:43:24.43
GU.RNCA.HHE. ML:1.7 0.0001567372 1.1 AML other m 2021-10-05T00:43:35.52
GU.RNCA.HHN. ML:1.6 0.0001279036 0.36 AML other m 2021-10-05T00:43:34.16
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