Earthquake with magnitude of ML 3.1 on date 28-07-2009 and time 17:48:09 (Italy) in region 1 km NW Cerignale (PC)

A magnitude ML 3.1 earthquake occured in region: 1 km NW Cerignale (PC), on

  • 28-07-2009 15:48:09 (UTC)
  • 28-07-2009 17:48:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.6850, 9.3450 at 2 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 1 127 127
Corte Brugnatella PC 4 586 713
Zerba PC 5 77 790
Ottone PC 7 516 1306
Brallo di Pregola PV 8 599 1905
Coli PC 9 879 2784
Gorreto GE 10 97 2881
Bobbio PC 10 3577 6458
Santa Margherita di Staffora PV 13 473 6931
Ferriere PC 13 1294 8225
Rovegno GE 13 554 8779
Menconico PV 14 360 9139
Carrega Ligure AL 15 84 9223
Fontanigorda GE 16 277 9500
Fascia GE 16 81 9581
Rondanina GE 17 62 9643
Fabbrica Curone AL 17 656 10299
Romagnese PV 17 687 10986
Santo Stefano d'Aveto GE 17 1126 12112
Rezzoaglio GE 18 995 13107
Farini PC 18 1290 14397
Propata GE 18 142 14539
Montebruno GE 19 240 14779
Varzi PV 19 3279 18058
Cabella Ligure AL 20 528 18586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NE of Genova (586655 inhabitants)
49 Km SW of Piacenza (102191 inhabitants)
58 Km S of Pavia (72576 inhabitants)
63 Km E of Alessandria (93943 inhabitants)
73 Km SW of Cremona (71901 inhabitants)
75 Km NW of La Spezia (93959 inhabitants)
79 Km W of Parma (192836 inhabitants)
80 Km SE of Vigevano (63310 inhabitants)
80 Km NE of Savona (61345 inhabitants)
88 Km S of Milano (1345851 inhabitants)
90 Km NW of Carrara (63133 inhabitants)
93 Km E of Asti (76202 inhabitants)
95 Km S of Sesto San Giovanni (81608 inhabitants)
96 Km NW of Massa (69479 inhabitants)
97 Km S of Rho (50434 inhabitants)
98 Km S of Cinisello Balsamo (75078 inhabitants)
100 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 3.1 2009-07-28
15:48:09
44.685 9.345 2 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 937319
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-07-28 15:48:09 ± 0.19
Latitude 44.6850 ± 0.0054
Longitude 9.3450 ± 0.0089
Depth (km) 2 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 937319

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 614
Semi-minor axis of confidence ellipse (meter) 381
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 354
Circular confidence region, given by single value of horizontal uncertainty (meter) 922.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 94
Number of defining phases 64
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.79
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 2.95337
Number of stations at which the event was observed 76
Number of stations from which data was used for origin computation 49
Magnitude information

ML:3.1

Field Value
Value 3.1
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 937319
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:52:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FSSB.SHZ. 2009-07-28T15:49:07.25 10.0 undecidable manual Sn 0 0 0
IV.SNTG.SHZ. 2009-07-28T15:49:06.25 10.0 undecidable manual Pn 0 0 0
IV.FDMO.HHE. 2009-07-28T15:49:06.42 10.0 undecidable manual Pn 0 0 0
NI.ACOM.HHE. 2009-07-28T15:49:06.30 10.0 undecidable manual Pn 0 0 0
IV.NRCA.SHZ. 2009-07-28T15:49:06.51 10.0 undecidable manual Pn 0 0 0
IV.FVI.HHE. 2009-07-28T15:49:05.38 10.0 undecidable manual Sn 0 0 0
IV.ARVD.HHE. 2009-07-28T15:49:05.07 10.0 undecidable manual Pn 0 0 0
IV.FSSB.SHZ. 2009-07-28T15:49:02.60 10.0 undecidable manual Pn 0 0 0
IV.ASSB.HHZ. 2009-07-28T15:49:02.73 10.0 undecidable manual Pn 0 0 0
IV.PTCC.SHZ. 2009-07-28T15:49:02.45 10.0 undecidable manual Pn 0 0 0
NI.VINO.HHZ. 2009-07-28T15:49:01.79 10.0 undecidable manual Pn 0 0 0
OE.WTTA.HHZ. 2009-07-28T15:49:01.20 10.0 undecidable manual Pn 0 0 0
NI.SABO.HHZ. 2009-07-28T15:49:01.79 10.0 undecidable manual Pn 0 0 0
IV.FVI.HHE. 2009-07-28T15:49:01.98 10.0 undecidable manual Pn 0 0 0
IV.BADI.EHN. 2009-07-28T15:49:01.53 10.0 undecidable manual Pn 0 0 0
IV.MURB.HHN. 2009-07-28T15:49:00.15 10.0 undecidable manual Pn 0 0 0
GU.STV.HHZ. 2009-07-28T15:49:00.45 0.1 undecidable manual Sg 254 167.1105 1.393 42
IV.PIEI.HHN. 2009-07-28T15:48:58.31 10.0 undecidable manual Pn 0 0 0
IV.MGAB.HHN. 2009-07-28T15:48:58.81 10.0 undecidable manual Pn 0 0 0
NI.PALA.HHZ. 2009-07-28T15:48:57.45 0.3 undecidable manual Pg 57 327.8274 -1.336 12
IV.MAGA.HHZ. 2009-07-28T15:48:57.92 0.1 undecidable manual Sg 39 157.1205 1.546 40
IV.RAVA.EHN. 2009-07-28T15:48:56.93 10.0 undecidable manual Pn 0 0 0
IV.RSM.SHZ. 2009-07-28T15:48:55.65 10.0 undecidable manual Pn 0 0 0
IV.ARCI.HHZ. 2009-07-28T15:48:54.90 10.0 undecidable manual Pn 0 0 0
IV.PARC.HHZ. 2009-07-28T15:48:53.90 10.0 undecidable manual Pn 0 0 0
CH.MUGIO.HHZ. 2009-07-28T15:48:51.40 0.1 undecidable manual Sg 350 139.2606 -0.21 75
IV.CAFI.HHE. 2009-07-28T15:48:50.31 0.6 undecidable manual Pg 125 257.5533 0.26 19
IV.ASQU.HHZ. 2009-07-28T15:48:48.79 10.0 undecidable manual Pn 0 0 0
IV.SFI.EHZ. 2009-07-28T15:48:48.09 10.0 undecidable manual Pg 0 0 0
IV.CRE.HHZ. 2009-07-28T15:48:48.90 0.6 undecidable manual Pg 119 238.7832 1.189 15
CH.DAVOX.HHZ. 2009-07-28T15:48:47.67 0.1 undecidable manual Pg 10 236.0859 0.296 45
CH.FUORN.HHZ. 2009-07-28T15:48:47.28 0.1 undecidable manual Pg 18 226.2069 1.144 35
IV.MDI.HHZ. 2009-07-28T15:48:47.78 1.0 undecidable manual Sg 13 123.7872 0.303 19
IV.MONC.HHZ. 2009-07-28T15:48:47.44 0.6 undecidable manual Sg 292 119.4915 1.092 29
GU.MAIM.HHZ. 2009-07-28T15:48:46.78 0.6 undecidable manual Sg 133 124.8861 -0.997 30
CH.DIX.HHZ. 2009-07-28T15:48:46.05 0.1 undecidable manual Pg 316 216.4167 1.126 37
IV.CTI.EHZ. 2009-07-28T15:48:45.80 0.1 undecidable manual Pg 49 234.7872 -1.408 28
IV.MRGE.HHN. 2009-07-28T15:48:45.08 0.1 undecidable manual Pg 305 215.2179 0.301 51
NI.CGRP.HHZ. 2009-07-28T15:48:45.65 0.1 undecidable manual Pg 54 233.2887 -1.379 29
GU.RORO.HHE. 2009-07-28T15:48:45.82 0.1 undecidable manual Sg 238 119.6913 -0.563 72
IV.VMG.SHZ. 2009-07-28T15:48:45.01 10.0 undecidable manual Pg 0 0 0
IV.GRFL.SHZ. 2009-07-28T15:48:45.12 0.1 undecidable manual Pg 142 214.6185 0.416 50
MN.BNI.HHZ. 2009-07-28T15:48:44.68 0.1 undecidable manual Pg 282 213.7194 0.087 54
IV.CSNT.HHZ. 2009-07-28T15:48:44.53 0.1 undecidable manual Pg 130 205.1391 1.005 42
IV.BRMO.HHZ. 2009-07-28T15:48:44.28 0.1 undecidable manual Pg 22 214.119 -0.354 51
CH.BERNI.HHE. 2009-07-28T15:48:43.54 0.1 undecidable manual Pg 15 198.8454 0.804 48
CH.FUSIO.HHZ. 2009-07-28T15:48:43.46 0.1 undecidable manual Pg 345 203.3409 0.162 57
IV.SEI.SHZ. 2009-07-28T15:48:42.27 10.0 undecidable manual Pg 0 0 0
MN.TUE.HHZ. 2009-07-28T15:48:42.08 0.1 undecidable manual Pg 0 198.2571 -0.586 53
IV.MTRZ.HHZ. 2009-07-28T15:48:42.29 10.0 undecidable manual Pg 0 0 0
GU.FINB.HHZ. 2009-07-28T15:48:41.15 0.1 undecidable manual Sg 235 98.5236 0.417 78
CH.MMK.HHE. 2009-07-28T15:48:40.92 0.1 undecidable manual Pg 325 185.8695 -0.203 62
GU.LSD.HHN. 2009-07-28T15:48:40.43 0.1 undecidable manual Pg 297 193.362 -1.623 32
MN.VLC.HHE. 2009-07-28T15:48:40.88 0.1 undecidable manual Sg 125 101.0211 -0.531 76
IV.DOI.HHE. 2009-07-28T15:48:39.02 0.1 undecidable manual Pg 264 167.0106 0.772 57
GU.PZZ.HHZ. 2009-07-28T15:48:39.63 0.1 undecidable manual Pg 264 177.1893 -0.193 65
GU.STV.HHZ. 2009-07-28T15:48:38.15 0.1 undecidable manual Pg 254 167.1105 -0.122 69
IV.MABI.HHZ. 2009-07-28T15:48:38.70 0.1 undecidable manual Pg 31 177.1893 -1.117 47
GU.BHB.HHZ. 2009-07-28T15:48:37.92 0.1 undecidable manual Pg 277 164.8128 0.006 72
IV.QLNO.HHZ. 2009-07-28T15:48:37.95 0.1 undecidable manual Sg 243 88.6446 -0.15 85
IV.FNVD.HHZ. 2009-07-28T15:48:37.13 0.6 undecidable manual Pg 112 152.0367 1.18 25
IV.ERBM.EHE. 2009-07-28T15:48:37.54 1.0 undecidable manual Sg 109 89.3439 -0.763 18
IV.ROVR.HHZ. 2009-07-28T15:48:37.88 0.1 undecidable manual Pg 51 172.0944 -1.159 47
GU.RSP.HHZ. 2009-07-28T15:48:37.97 0.1 undecidable manual Pg 288 171.2952 -0.939 52
IV.CRMI.HHZ. 2009-07-28T15:48:37.68 0.1 undecidable manual Pg 127 162.9147 0.063 71
IV.MAGA.HHZ. 2009-07-28T15:48:36.29 0.1 undecidable manual Pg 39 157.1205 -0.434 68
IV.ZCCA.HHE. 2009-07-28T15:48:36.68 10.0 undecidable manual Pg 0 0 0
IV.SALO.HHE. 2009-07-28T15:48:34.31 0.1 undecidable manual Pg 41 138.6612 0.427 72
IV.GROG.HHZ. 2009-07-28T15:48:34.12 0.1 undecidable manual Pg 162 146.3424 -0.939 58
IV.PII.SHZ. 2009-07-28T15:48:34.68 0.1 undecidable manual Pg 138 142.1466 0.254 74
CH.MUGIO.HHZ. 2009-07-28T15:48:33.66 0.1 undecidable manual Pg 350 139.2606 -0.311 74
IV.PZZT.HHE. 2009-07-28T15:48:33.77 0.1 undecidable manual Pg 117 134.9649 0.457 72
IV.MONC.HHZ. 2009-07-28T15:48:32.88 0.1 undecidable manual Pg 292 119.4915 1.945 34
IV.VCEL.EHE. 2009-07-28T15:48:32.96 10.0 undecidable manual Sg 0 0 0
GU.MAIM.HHZ. 2009-07-28T15:48:31.35 0.1 undecidable manual Pg 133 124.8861 -0.408 75
GU.PCP.HHN. 2009-07-28T15:48:31.48 0.1 undecidable manual Sg 256 65.1903 -0.358 85
IV.MDI.HHZ. 2009-07-28T15:48:31.00 0.1 undecidable manual Pg 13 123.7872 -0.586 71
IV.BDI.HHZ. 2009-07-28T15:48:31.32 0.1 undecidable manual Pg 124 120.8901 0.171 79
GU.RORO.HHE. 2009-07-28T15:48:30.65 0.1 undecidable manual Pg 238 119.6913 -0.305 77
IV.GSCL.SHZ. 2009-07-28T15:48:29.44 0.1 undecidable manual Pg 110 105.117 0.734 69
IV.NOVE.EHE. 2009-07-28T15:48:29.19 0.6 undecidable manual Pg 83 108.7134 -0.08 41
GU.FINB.HHZ. 2009-07-28T15:48:28.07 0.1 undecidable manual Pg 235 98.5236 0.38 79
MN.VLC.HHE. 2009-07-28T15:48:27.87 0.1 undecidable manual Pg 125 101.0211 -0.211 82
IV.VCEL.EHE. 2009-07-28T15:48:27.07 10.0 undecidable manual Pg 0 0 0
IV.QLNO.HHZ. 2009-07-28T15:48:26.24 0.1 undecidable manual Pg 243 88.6446 0.068 86
IV.ERBM.EHE. 2009-07-28T15:48:26.35 0.1 undecidable manual Pg 109 89.3439 0.064 86
IV.PRMA.HHZ. 2009-07-28T15:48:25.16 0.1 undecidable manual Pg 83 76.7676 0.814 71
IV.MSSA.HHZ. 2009-07-28T15:48:24.44 0.1 undecidable manual Sg 162 43.1235 -0.407 87
GU.SC2M.HHZ. 2009-07-28T15:48:22.53 0.1 undecidable manual Sg 154 34.5432 0.655 82
GU.PCP.HHN. 2009-07-28T15:48:21.93 0.1 undecidable manual Pg 256 65.1903 -0.626 78
IV.MSSA.HHZ. 2009-07-28T15:48:18.24 0.1 undecidable manual Pg 162 43.1235 -0.282 90
GU.SC2M.HHZ. 2009-07-28T15:48:17.00 0.3 undecidable manual Pg 154 34.5432 0.196 70
IV.BOB.HHZ. 2009-07-28T15:48:14.18 0.1 undecidable manual Sg 41 12.2766 0.024 100
IV.BOB.HHZ. 2009-07-28T15:48:12.38 0.1 undecidable manual Pg 41 12.2766 0.032 100
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