Earthquake with magnitude of ML 2.0 on date 12-11-2021 and time 11:05:18 (Italy) in region 3 km W Urbe (SV)

A magnitude ML 2.0 earthquake occured in region: 3 km W Urbe (SV), on

  • 12-11-2021 10:05:18 (UTC)
  • 12-11-2021 11:05:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.494, 8.555 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
Urbe SV 3 700 700
Sassello SV 5 1777 2477
Tiglieto GE 6 546 3023
Pontinvrea SV 11 847 3870
Mioglia SV 11 526 4396
Stella SV 12 3009 7405
Rossiglione GE 12 2779 10184
Campo Ligure GE 13 2955 13139
Masone GE 13 3679 16818
Cassinelle AL 13 914 17732
Morbello AL 13 402 18134
Ponzone AL 13 1051 19185
Malvicino AL 13 85 19270
Cogoleto GE 14 9172 28442
Giusvalla SV 14 441 28883
Pareto AL 14 554 29437
Arenzano GE 14 11519 40956
Molare AL 15 2181 43137
Varazze SV 15 13251 56388
Cartosio AL 15 747 57135
Grognardo AL 16 259 57394
Cremolino AL 16 1086 58480
Mele GE 16 2725 61205
Prasco AL 17 521 61726
Celle Ligure SV 17 5237 66963
Belforte Monferrato AL 17 515 67478
Cavatore AL 17 291 67769
Albisola Superiore SV 17 10163 77932
Ovada AL 18 11477 89409
Montechiaro d'Acqui AL 18 560 89969
Spigno Monferrato AL 18 1050 91019
Tagliolo Monferrato AL 19 1581 92600
Albissola Marina SV 19 5487 98087
Trisobbio AL 19 655 98742
Morsasco AL 19 679 99421
Visone AL 19 1194 100615
Castelletto d'Erro AL 19 148 100763
Melazzo AL 20 1325 102088
Piana Crixia SV 20 788 102876
Mombaldone AT 20 209 103085
Dego SV 20 1985 105070

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km N of Savona (61345 inhabitants)
31 Km W of Genova (586655 inhabitants)
47 Km S of Alessandria (93943 inhabitants)
53 Km SE of Asti (76202 inhabitants)
80 Km E of Cuneo (56081 inhabitants)
89 Km SE of Moncalieri (57294 inhabitants)
91 Km SW of Pavia (72576 inhabitants)
94 Km SE of Torino (890529 inhabitants)
95 Km S of Vigevano (63310 inhabitants)
97 Km NE of Sanremo (54807 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
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
Reviewed
Rev100
ML 2.0 2021-11-12
10:05:18
44.4938 8.555 8 2021-11-12
10:13:52
Sala Sismica INGV-Roma 97413461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-12 10:05:18 ± 0.1
Latitude 44.4938 ± 0.0054
Longitude 8.5550 ± 0.0076
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 97413461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 598
Semi-minor axis of confidence ellipse (meter) 554
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 116
Circular confidence region, given by single value of horizontal uncertainty (meter) 600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.12415
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 16
Magnitude information

ML:2

Field Value
Value 2
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 97413461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-12 10:13:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RMP.HHZ. 2021-11-12T10:06:28.05 3.0 undecidable manual Pg 7.54 0
IV.PIEI.HHZ. 2021-11-12T10:06:18.81 3.0 undecidable manual Pg 12.42 0
IV.MGAB.HHZ. 2021-11-12T10:06:14.15 3.0 negative manual Pg 7.74 0
IT.FIE.HGZ. 2021-11-12T10:06:01.31 3.0 undecidable manual Pg 7.81 0
GU.RSP.HHZ. 2021-11-12T10:05:54.91 0.6 undecidable manual S 306 1.1242 50 0.09 40
GU.PZZ.HHZ. 2021-11-12T10:05:51.84 0.3 undecidable manual S 271 1.0261 50 -0.07 62
GU.BHB.HHZ. 2021-11-12T10:05:49.98 0.1 undecidable manual S 291 0.9794 50 -0.56 74
GU.STV.HHZ. 2021-11-12T10:05:48.03 0.1 undecidable manual S 255 0.9119 50 -0.51 77
FR.SAOF.HHZ.00 2021-11-12T10:05:47.75 0.1 undecidable manual S 235 0.8786 50 0.2 83
GU.ENR.HHZ. 2021-11-12T10:05:46.63 0.3 undecidable manual S 252 0.8544 50 -0.19 63
GU.CIRO.HHZ. 2021-11-12T10:05:42.70 3.0 positive manual P 0.36 0
GU.MGRO.HHZ. 2021-11-12T10:05:42.62 0.3 undecidable manual S 230 0.6997 50 0.39 62
GU.RSP.HHZ. 2021-11-12T10:05:39.38 0.1 undecidable manual P 306 1.1242 50 -0.05 81
GU.GORR.HHZ. 2021-11-12T10:05:38.01 0.3 undecidable manual S 78 0.5378 50 0.58 61
GU.PZZ.HHZ. 2021-11-12T10:05:38.37 0.6 negative manual P 271 1.0261 50 0.62 36
GU.BHB.HHZ. 2021-11-12T10:05:37.18 0.6 negative manual P 291 0.9794 50 0.22 40
GU.GBOS.HHZ. 2021-11-12T10:05:37.61 0.1 undecidable manual S 244 0.5693 50 -0.78 74
GU.RORO.HHZ. 2021-11-12T10:05:36.75 0.1 undecidable manual S 223 0.5171 50 -0.08 92
GU.STV.HHZ. 2021-11-12T10:05:36.62 0.3 negative manual P 255 0.9119 50 0.82 51
FR.SAOF.HHZ.00 2021-11-12T10:05:36.16 0.1 undecidable manual P 235 0.8786 50 0.93 65
GU.ENR.HHZ. 2021-11-12T10:05:35.19 0.6 positive manual P 252 0.8544 50 0.38 40
GU.IMI.HHZ. 2021-11-12T10:05:33.59 0.1 undecidable manual P 219 0.7518 50 0.54 79
IV.MSSA.HHZ. 2021-11-12T10:05:33.76 3.0 undecidable manual P 0.73 0
GU.MGRO.HHZ. 2021-11-12T10:05:32.44 0.1 undecidable manual P 230 0.6997 50 0.28 85
GU.ROTM.HHZ. 2021-11-12T10:05:32.82 0.1 undecidable manual S 338 0.3831 50 -0.05 95
GU.CANO.HHZ. 2021-11-12T10:05:31.59 0.1 undecidable manual S 219 0.3651 50 -0.75 79
GU.GBOS.HHZ. 2021-11-12T10:05:30.01 0.1 undecidable manual P 244 0.5693 50 0.07 91
GU.RNCA.HHZ. 2021-11-12T10:05:29.14 0.1 undecidable manual S 94 0.2833 104 -0.54 87
GU.RORO.HHZ. 2021-11-12T10:05:29.10 0.1 positive manual P 223 0.5171 50 0.06 92
GU.GORR.HHZ. 2021-11-12T10:05:29.41 1.0 undecidable manual P 78 0.5378 50 0.02 23
IV.QLNO.HHZ. 2021-11-12T10:05:27.43 0.1 undecidable manual S 221 0.2257 108 -0.12 97
GU.CANO.HHZ. 2021-11-12T10:05:26.37 0.1 positive manual P 219 0.3651 50 -0.08 95
GU.ROTM.HHZ. 2021-11-12T10:05:26.63 0.6 negative manual P 338 0.3831 50 -0.13 47
GU.RNCA.HHZ. 2021-11-12T10:05:24.54 0.1 negative manual P 94 0.2833 104 -0.37 91
IV.QLNO.HHZ. 2021-11-12T10:05:23.94 0.1 positive manual P 221 0.2257 108 0.26 94
GU.PCP.HHZ. 2021-11-12T10:05:21.66 0.1 undecidable manual S 352 0.0477 147 -0.11 100
GU.PCP.HHZ. 2021-11-12T10:05:20.53 0.1 undecidable manual P 352 0.0477 147 0.18 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.QLNO.HHE. ML:1.8 0.0003815 1.42 AML other m 2021-11-12T10:05:27.78
IV.QLNO.HHN. ML:1.7 0.000287 0.72 AML other m 2021-11-12T10:05:29.52
GU.RNCA.HHN. ML:1.7 0.0002575 0.66 AML other m 2021-11-12T10:05:29.54
GU.RNCA.HHE. ML:1.7 0.000224 0.84 AML other m 2021-11-12T10:05:29.42
GU.CANO.HHN. ML:2.2 0.000533 0.22 AML other m 2021-11-12T10:05:33.12
GU.ROTM.HHE. ML:2.6 0.00123 1.42 AML other m 2021-11-12T10:05:33.01
GU.ROTM.HHN. ML:2.6 0.0012405 1.74 AML other m 2021-11-12T10:05:33.97
GU.CANO.HHE. ML:2.2 0.000485 0.78 AML other m 2021-11-12T10:05:33.50
GU.RORO.HHE. ML:2.1 0.0002982 1.44 AML other m 2021-11-12T10:05:33.05
GU.RORO.HHN. ML:1.9 0.000189 0.48 AML other m 2021-11-12T10:05:37.24
GU.GBOS.HHN. ML:1.8 0.000129 0.2 AML other m 2021-11-12T10:05:37.53
GU.GORR.HHE. ML:1.5 7.035E-5 0.62 AML other m 2021-11-12T10:05:39.11
GU.GORR.HHN. ML:1.6 8.515E-5 1.14 AML other m 2021-11-12T10:05:39.14
GU.GBOS.HHE. ML:1.6 6.995E-5 1.24 AML other m 2021-11-12T10:05:40.62
IV.MSSA.HHN. ML:1.9 0.0001205 0.58 AML other m 2021-11-12T10:05:45.41
IV.MSSA.HHE. ML:2.1 0.0001925 0.1 AML other m 2021-11-12T10:05:45.60
GU.MGRO.HHN. ML:2 0.0001375 0.36 AML other m 2021-11-12T10:05:46.22
GU.MGRO.HHE. ML:1.9 0.00011395 1.54 AML other m 2021-11-12T10:05:46.15
GU.ENR.HHN. ML:2.2 0.0001695 0.12 AML other m 2021-11-12T10:05:48.54
GU.ENR.HHE. ML:2.1 0.000131 0.08 AML other m 2021-11-12T10:05:49.22
GU.BHB.HNN. ML:2 9.56E-5 1.14 AML other m 2021-11-12T10:05:52.58
GU.BHB.HHN. ML:2 9.715E-5 0.16 AML other m 2021-11-12T10:05:52.02
GU.BHB.HNE. ML:1.9 7.35E-5 1.32 AML other m 2021-11-12T10:05:52.19
GU.BHB.HHE. ML:1.9 6.66E-5 1.34 AML other m 2021-11-12T10:05:52.19
GU.PZZ.HHE. ML:2.3 0.0001725 0.46 AML other m 2021-11-12T10:05:53.43
GU.PZZ.HHN. ML:2.1 9.785E-5 0.3 AML other m 2021-11-12T10:05:54.53
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