Earthquake with magnitude of ML 3.0 on date 31-07-2009 and time 23:39:29 (UTC) in region 3 km W Cerignale (PC)

A magnitude ML 3.0 earthquake occured in region: 3 km W Cerignale (PC), on

  • 31-07-2009 23:39:29 (UTC)
  • 01-08-2009 01:39:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.6920, 9.3170 at 1 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
Cerignale PC 3 127 127
Zerba PC 4 77 204
Corte Brugnatella PC 6 586 790
Brallo di Pregola PV 6 599 1389
Ottone PC 8 516 1905
Coli PC 10 879 2784
Gorreto GE 10 97 2881
Bobbio PC 10 3577 6458
Santa Margherita di Staffora PV 11 473 6931
Menconico PV 12 360 7291
Rovegno GE 13 554 7845
Carrega Ligure AL 14 84 7929
Fabbrica Curone AL 15 656 8585
Ferriere PC 15 1294 9879
Fascia GE 15 81 9960
Fontanigorda GE 16 277 10237
Romagnese PV 16 687 10924
Rondanina GE 16 62 10986
Varzi PV 17 3279 14265
Cabella Ligure AL 18 528 14793
Propata GE 18 142 14935
Montacuto AL 19 278 15213
Montebruno GE 19 240 15453
Rezzoaglio GE 19 995 16448
Santo Stefano d'Aveto GE 19 1126 17574
Albera Ligure AL 20 325 17899

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km NE of Genova (586655 inhabitants)
50 Km SW of Piacenza (102191 inhabitants)
56 Km S of Pavia (72576 inhabitants)
61 Km E of Alessandria (93943 inhabitants)
74 Km SW of Cremona (71901 inhabitants)
77 Km NW of La Spezia (93959 inhabitants)
78 Km SE of Vigevano (63310 inhabitants)
79 Km NE of Savona (61345 inhabitants)
81 Km W of Parma (192836 inhabitants)
87 Km S of Milano (1345851 inhabitants)
91 Km E of Asti (76202 inhabitants)
92 Km NW of Carrara (63133 inhabitants)
94 Km S of Sesto San Giovanni (81608 inhabitants)
96 Km S of Rho (50434 inhabitants)
97 Km S of Cinisello Balsamo (75078 inhabitants)
98 Km NW of Massa (69479 inhabitants)
99 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

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
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
Bulletin
Rev1000
ML 3.0 2009-07-31
23:39:29
44.692 9.317 1 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 939659
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-07-31 23:39:29 ± 0.1
Latitude 44.6920 ± 0.0072
Longitude 9.3170 ± 0.0089
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 939659

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 737
Semi-minor axis of confidence ellipse (meter) 737
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 2
Circular confidence region, given by single value of horizontal uncertainty (meter) 1063.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 101
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.92994
Number of stations at which the event was observed 85
Number of stations from which data was used for origin computation 39
Magnitude information

ML:3.0

Field Value
Value 3.0
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 939659
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:55:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ESLN.HHN. 2009-07-31T23:41:10.51 10.0 undecidable manual Pn 0 0 0
IV.TERO.HHN. 2009-07-31T23:40:41.50 10.0 undecidable manual Pn 0 0 0
IV.FAGN.HHE. 2009-07-31T23:40:37.97 10.0 undecidable manual Pn 0 0 0
IV.PTCC.SHZ. 2009-07-31T23:40:35.00 10.0 undecidable manual Sn 0 0 0
IV.CAMP.HHN. 2009-07-31T23:40:34.68 10.0 undecidable manual Pn 0 0 0
IV.LNSS.HHN. 2009-07-31T23:40:33.20 10.0 undecidable manual Sn 0 0 0
IV.NRCA.SHZ. 2009-07-31T23:40:33.00 10.0 undecidable manual Sn 0 0 0
IV.SAN2.EHE. 2009-07-31T23:40:32.06 10.0 undecidable manual Pn 0 0 0
CH.PLONS.HHN. 2009-07-31T23:40:31.09 10.0 undecidable manual Sn 0 0 0
IV.LNSS.HHN. 2009-07-31T23:40:28.65 10.0 undecidable manual Pn 0 0 0
IV.MNS.HHZ. 2009-07-31T23:40:28.25 10.0 undecidable manual Pn 0 0 0
NI.ACOM.HHE. 2009-07-31T23:40:26.22 10.0 undecidable manual Pn 0 0 0
IV.NRCA.SHZ. 2009-07-31T23:40:26.85 10.0 undecidable manual Pn 0 0 0
IV.FDMO.HHE. 2009-07-31T23:40:26.48 10.0 undecidable manual Pn 0 0 0
CH.GIMEL.HHZ. 2009-07-31T23:40:25.44 10.0 undecidable manual Pn 0 0 0
IV.ARVD.HHE. 2009-07-31T23:40:25.15 10.0 undecidable manual Sn 0 0 0
IV.CESI.HHZ. 2009-07-31T23:40:25.42 10.0 undecidable manual Pn 0 0 0
IV.ASSB.HHE. 2009-07-31T23:40:24.42 10.0 undecidable manual Pn 0 0 0
IV.MURB.HHZ. 2009-07-31T23:40:23.18 10.0 undecidable manual Sn 0 0 0
IV.FVI.HHE. 2009-07-31T23:40:23.80 10.0 undecidable manual Pn 0 0 0
IV.SNTG.SHZ. 2009-07-31T23:40:23.48 10.0 undecidable manual Pn 0 0 0
IV.PTCC.SHZ. 2009-07-31T23:40:22.09 10.0 undecidable manual Pn 0 0 0
NI.SABO.HHE. 2009-07-31T23:40:22.25 10.0 undecidable manual Pn 0 0 0
IV.FSSB.SHZ. 2009-07-31T23:40:21.44 10.0 undecidable manual Sn 0 0 0
IV.ARVD.HHE. 2009-07-31T23:40:21.94 10.0 undecidable manual Pn 0 0 0
OE.WTTA.HHZ. 2009-07-31T23:40:19.64 10.0 undecidable manual Pn 0 0 0
IV.FSSB.SHZ. 2009-07-31T23:40:18.11 10.0 undecidable manual Pn 0 0 0
IV.MGAB.HHN. 2009-07-31T23:40:18.17 10.0 undecidable manual Pn 0 0 0
IV.PIEI.HHE. 2009-07-31T23:40:18.56 10.0 undecidable manual Sn 0 0 0
IV.MURB.HHZ. 2009-07-31T23:40:18.62 10.0 undecidable manual Pn 0 0 0
IV.PIEI.HHE. 2009-07-31T23:40:17.01 10.0 undecidable manual Pn 0 0 0
IV.BADI.EHZ. 2009-07-31T23:40:17.60 10.0 undecidable manual Pn 0 0 0
IV.MAGA.HHZ. 2009-07-31T23:40:16.14 0.6 undecidable manual Sg 40 157.9197 -0.247 36
IV.CAFI.HHE. 2009-07-31T23:40:16.11 10.0 undecidable manual Pn 0 0 0
IV.PARC.HHZ. 2009-07-31T23:40:15.19 10.0 undecidable manual Pn 0 0 0
GU.TRAV.HHZ. 2009-07-31T23:40:14.90 0.6 undecidable manual Sg 307 152.9358 -0.161 37
IV.RSM.SHZ. 2009-07-31T23:40:14.14 10.0 undecidable manual Pn 0 0 0
IV.CMPO.HHN. 2009-07-31T23:40:14.60 10.0 undecidable manual Sn 0 0 0
CH.PLONS.HHN. 2009-07-31T23:40:11.23 10.0 undecidable manual Pn 0 0 0
CH.BNALP.HHZ. 2009-07-31T23:40:10.89 10.0 undecidable manual Pn 0 0 0
IV.GRFL.SHZ. 2009-07-31T23:40:09.02 10.0 undecidable manual Pn 0 0 0
IV.CRE.HHZ. 2009-07-31T23:40:09.39 10.0 undecidable manual Pn 0 0 0
IV.MDI.HHZ. 2009-07-31T23:40:08.23 1.0 undecidable manual Sg 14 123.5874 1.014 15
IV.ASQU.HHZ. 2009-07-31T23:40:08.76 10.0 undecidable manual Pn 0 0 0
IV.SFI.EHE. 2009-07-31T23:40:08.72 10.0 undecidable manual Pn 0 0 0
CH.DAVOX.HHZ. 2009-07-31T23:40:07.76 10.0 undecidable manual Pn 0 0 0
CH.FUORN.HHZ. 2009-07-31T23:40:07.36 10.0 undecidable manual Pn 0 0 0
CH.DIX.HHE. 2009-07-31T23:40:06.90 10.0 undecidable manual Pn 0 0 0
IV.CMPO.HHN. 2009-07-31T23:40:06.07 10.0 undecidable manual Pn 0 0 0
MN.BNI.HHZ. 2009-07-31T23:40:06.28 10.0 undecidable manual Pn 0 0 0
IV.VMG.SHZ. 2009-07-31T23:40:05.15 10.0 undecidable manual Pg 0 0 0
IV.CSNT.HHZ. 2009-07-31T23:40:05.51 10.0 undecidable manual Pg 0 0 0
IV.CTI.EHZ. 2009-07-31T23:40:05.96 10.0 undecidable manual Pn 0 0 0
IV.MRGE.HHE. 2009-07-31T23:40:05.36 10.0 undecidable manual Pg 0 0 0
NI.CGRP.HHZ. 2009-07-31T23:40:05.63 10.0 undecidable manual Pn 0 0 0
CH.FUSIO.HHN. 2009-07-31T23:40:04.13 10.0 undecidable manual Pg 0 0 0
IV.BRMO.HHN. 2009-07-31T23:40:03.95 0.3 undecidable manual Pg 22 214.2189 -0.458 38
IV.SEI.SHZ. 2009-07-31T23:40:02.81 10.0 undecidable manual Pg 0 0 0
MN.TUE.HHN. 2009-07-31T23:40:02.23 0.1 undecidable manual Pg 1 197.5578 -0.104 60
CH.BERNI.HHZ. 2009-07-31T23:40:02.01 0.3 undecidable manual Pg 16 198.6567 -0.47 42
IV.MTRZ.HHZ. 2009-07-31T23:40:01.76 0.6 undecidable manual Pg 103 171.9945 2.991 2
CH.MMK.HHZ. 2009-07-31T23:40:01.28 10.0 undecidable manual Pg 0 0 0
GU.LSD.HHE. 2009-07-31T23:40:00.55 0.3 undecidable manual Pg 297 190.9644 -0.972 35
GU.PZZ.HHZ. 2009-07-31T23:39:59.28 0.3 undecidable manual Pg 264 174.9915 0.046 52
IV.DOI.HHZ. 2009-07-31T23:39:58.55 0.3 undecidable manual Pg 263 164.8128 0.884 42
IV.MABI.HHZ. 2009-07-31T23:39:58.86 0.3 undecidable manual Pg 31 177.6888 -0.782 41
GU.BHB.HHZ. 2009-07-31T23:39:57.54 0.3 undecidable manual Pg 276 162.5151 0.234 53
IV.CRMI.HHZ. 2009-07-31T23:39:57.72 0.6 undecidable manual Pg 127 165.1125 0.009 36
GU.RSP.HHZ. 2009-07-31T23:39:57.93 0.3 undecidable manual Pg 288 168.9087 -0.36 50
GU.STV.HHE. 2009-07-31T23:39:57.67 0.3 undecidable manual Pg 253 165.2124 -0.046 54
IV.ROVR.HHZ. 2009-07-31T23:39:57.89 0.1 undecidable manual Pg 52 173.3931 -1.092 49
IV.FNVD.HHZ. 2009-07-31T23:39:56.92 0.6 undecidable manual Pg 111 154.4343 0.862 30
IV.MAGA.HHZ. 2009-07-31T23:39:56.06 0.1 undecidable manual Pg 40 157.9197 -0.539 67
IV.RAVA.EHZ. 2009-07-31T23:39:56.65 0.6 undecidable manual Pg 87 142.2465 2.473 9
GU.TRAV.HHZ. 2009-07-31T23:39:55.09 0.3 undecidable manual Pg 307 152.9358 -0.74 47
IV.ZCCA.HHZ. 2009-07-31T23:39:55.29 0.3 undecidable manual Pg 105 136.5633 1.976 24
IV.SALO.HHE. 2009-07-31T23:39:54.61 0.1 undecidable manual Pg 42 139.5603 0.837 63
IV.PII.SHZ. 2009-07-31T23:39:54.34 0.3 undecidable manual Pg 138 144.2445 -0.145 58
IV.SBPO.HHN. 2009-07-31T23:39:54.29 0.3 undecidable manual Pg 72 132.1677 1.659 31
CH.MUGIO.HHN. 2009-07-31T23:39:53.48 0.3 undecidable manual Pg 351 138.1617 -0.071 59
IV.PZZT.HHN. 2009-07-31T23:39:53.44 0.3 undecidable manual Pg 116 137.2626 0.017 60
IV.MONC.HHZ. 2009-07-31T23:39:52.64 0.1 undecidable manual Pg 292 117.1938 2.324 23
IV.NOVE.EHZ. 2009-07-31T23:39:51.68 0.6 undecidable manual Pg 83 110.9001 2.332 12
GU.MAIM.HHZ. 2009-07-31T23:39:51.08 0.3 undecidable manual Pg 132 127.0728 -0.76 50
GU.PCP.HHE. 2009-07-31T23:39:51.28 0.6 undecidable manual Sg 255 63.1923 0.19 45
GU.RORO.HHZ. 2009-07-31T23:39:50.58 0.3 undecidable manual Pg 237 118.1928 0.11 61
IV.MDI.HHZ. 2009-07-31T23:39:50.88 0.3 undecidable manual Pg 14 123.5874 -0.421 57
IV.BDI.HHE. 2009-07-31T23:39:50.84 0.3 undecidable manual Pg 124 123.1878 -0.403 57
IV.GSCL.SHZ. 2009-07-31T23:39:49.26 0.3 undecidable manual Pg 110 107.4147 0.439 58
MN.VLC.HHE. 2009-07-31T23:39:48.29 0.3 undecidable manual Pg 125 103.3188 0.111 63
IV.ERBM.EHZ. 2009-07-31T23:39:46.12 0.6 undecidable manual Pg 109 91.7415 -0.281 42
IV.PRMA.HHZ. 2009-07-31T23:39:45.19 0.3 undecidable manual Pg 84 78.9654 0.764 55
IV.QLNO.HHZ. 2009-07-31T23:39:45.93 0.3 undecidable manual Pg 242 86.9463 0.268 63
GU.FIVI.HLN. 2009-07-31T23:39:44.09 0.6 undecidable manual Pg 128 81.4518 -0.722 37
IV.MSSA.HHE. 2009-07-31T23:39:44.28 0.6 undecidable manual Sg 159 44.622 -0.765 39
GU.SC2M.HHZ. 2009-07-31T23:39:42.18 0.6 undecidable manual Sg 152 36.2415 0.029 49
GU.PCP.HHE. 2009-07-31T23:39:41.95 0.1 undecidable manual Pg 255 63.1923 -0.043 92
IV.MSSA.HHE. 2009-07-31T23:39:38.18 0.1 undecidable manual Pg 159 44.622 -0.326 90
GU.SC2M.HHZ. 2009-07-31T23:39:36.86 0.1 undecidable manual Pg 152 36.2415 0.025 97
IV.BOB.HHZ. 2009-07-31T23:39:34.08 0.3 undecidable manual Sg 51 13.3755 -0.137 74
IV.BOB.HHZ. 2009-07-31T23:39:32.34 0.1 undecidable manual Pg 51 13.3755 0.091 100
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, /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