Earthquake with magnitude of ML 2.2 on date 22-02-2020 and time 01:53:51 (Italy) in region 3 km S Belforte Monferrato (AL)

A magnitude ML 2.2 earthquake occured in region: 3 km S Belforte Monferrato (AL), on

  • 22-02-2020 00:53:51 (UTC)
  • 22-02-2020 01:53:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.6, 8.65 at 9 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
Belforte Monferrato AL 3 515 515
Rossiglione GE 4 2779 3294
Ovada AL 5 11477 14771
Molare AL 5 2181 16952
Tagliolo Monferrato AL 5 1581 18533
Lerma AL 6 869 19402
Cremolino AL 7 1086 20488
Cassinelle AL 7 914 21402
Campo Ligure GE 7 2955 24357
Casaleggio Boiro AL 8 372 24729
Rocca Grimalda AL 8 1512 26241
Tiglieto GE 8 546 26787
Trisobbio AL 9 655 27442
Prasco AL 9 521 27963
Mornese AL 10 737 28700
Carpeneto AL 10 977 29677
Montaldeo AL 10 265 29942
Silvano d'Orba AL 10 1988 31930
Castelletto d'Orba AL 11 2047 33977
Montaldo Bormida AL 11 664 34641
Morsasco AL 11 679 35320
Morbello AL 11 402 35722
Masone GE 11 3679 39401
Parodi Ligure AL 12 715 40116
Bosio AL 13 1227 41343
Orsara Bormida AL 13 424 41767
Urbe SV 13 700 42467
Grognardo AL 13 259 42726
San Cristoforo AL 13 608 43334
Visone AL 14 1194 44528
Capriata d'Orba AL 15 1904 46432
Rivalta Bormida AL 15 1446 47878
Voltaggio AL 15 738 48616
Strevi AL 15 2019 50635
Ponzone AL 15 1051 51686
Gavi AL 16 4614 56300
Carrosio AL 16 510 56810
Cavatore AL 16 291 57101
Francavilla Bisio AL 17 531 57632
Acqui Terme AL 17 19896 77528
Tassarolo AL 17 672 78200
Predosa AL 17 2048 80248
Fraconalto AL 18 336 80584
Castelnuovo Bormida AL 18 694 81278
Sassello SV 18 1777 83055
Mele GE 19 2725 85780
Cartosio AL 19 747 86527
Melazzo AL 19 1325 87852
Pasturana AL 19 1318 89170
Malvicino AL 19 85 89255
Basaluzzo AL 20 2087 91342
Cassine AL 20 2961 94303

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of Genova (586655 inhabitants)
35 Km NE of Savona (61345 inhabitants)
35 Km S of Alessandria (93943 inhabitants)
49 Km SE of Asti (76202 inhabitants)
77 Km SW of Pavia (72576 inhabitants)
82 Km S of Vigevano (63310 inhabitants)
89 Km SE of Moncalieri (57294 inhabitants)
90 Km E of Cuneo (56081 inhabitants)
93 Km SE of Torino (890529 inhabitants)
94 Km S of Novara (104380 inhabitants)
96 Km SW of Piacenza (102191 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 last three days (72 hours)

Earthquakes of the last three days (72 hours)

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. 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 last 90 days

Earthquakes of the last 90 days

This map reports the Magnitudo ≥ 1.0 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 1985

Earthquakes since 1985

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 2014

Earthquakes since 1000 AD until 2014

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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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
Rev 100 ML 2.2 2020-02-22
00:53:51
44.6 8.65 9 2020-02-22
01:00:12
Sala Sismica INGV-Roma 76708731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-22 00:53:51 ± 0.11
Latitude 44.60 ± 0.01
Longitude 8.65 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76708731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 638
Semi-minor axis of confidence ellipse (meter) 193
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 352
Circular confidence region, given by single value of horizontal uncertainty (meter) 640
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.39125
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 21
Magnitude information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 76708731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-22 01:00:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LAV9.HHZ. 2020-02-22T00:55:45.38 3.0 undecidable manual Sn 1.74 0
IV.PAOL.HHZ. 2020-02-22T00:55:34.02 3.0 undecidable manual Pg 19.459999 0
IV.PTRJ.HNZ. 2020-02-22T00:55:32.31 3.0 undecidable manual Pg 20.99 0
IV.SGG.HHZ. 2020-02-22T00:55:22.99 3.0 undecidable manual Pg 13.07 0
CR.ZAG.BHZ. 2020-02-22T00:55:18.74 3.0 undecidable manual Pn 8.17 0
IV.MNTT.EHZ. 2020-02-22T00:55:07.97 3.0 positive manual Pg 17.16 0
IV.FIR.HHZ. 2020-02-22T00:54:52.93 3.0 undecidable manual Sn 0.8 0
ST.PANI.EHZ. 2020-02-22T00:54:31.82 3.0 positive manual Pn 1.73 0
IV.FIR.HHZ. 2020-02-22T00:54:28.83 3.0 positive manual Pn 3.4 0
GU.PZZ.HHZ. 2020-02-22T00:54:27.11 0.3 undecidable manual S 266 1.0981 50 0.22 61
SI.LUSI.HHZ. 2020-02-22T00:54:27.49 3.0 negative manual Pn 1.12 0
IV.MABI.HHZ. 2020-02-22T00:54:25.27 3.0 undecidable manual Pn 1.02 0
ST.RONC.EHZ. 2020-02-22T00:54:25.74 3.0 positive manual Pn 1.49 0
GU.ENR.HHZ. 2020-02-22T00:54:22.47 0.6 undecidable manual S 248 0.9551 50 -0.17 43
IV.IMI.HHZ. 2020-02-22T00:54:21.35 0.6 undecidable manual S 219 0.8759 50 1.04 32
GU.SATI.HHZ. 2020-02-22T00:54:16.81 0.1 undecidable manual P 337 1.3913 50 -0.06 78
GU.CIRO.HHZ. 2020-02-22T00:54:14.28 0.1 undecidable manual P 323 1.2617 50 -0.38 76
GU.GBOS.HHZ. 2020-02-22T00:54:14.11 0.6 undecidable manual S 239 0.6808 50 -0.41 43
GU.RORO.HHZ. 2020-02-22T00:54:12.96 0.6 undecidable manual S 221 0.6412 50 -0.39 43
GU.PZZ.HHZ. 2020-02-22T00:54:12.12 1.0 positive manual P 266 1.0981 50 0.25 20
GU.TRAV.HHZ. 2020-02-22T00:54:12.70 0.1 undecidable manual P 325 1.1161 50 0.54 75
GU.GRAM.HHZ. 2020-02-22T00:54:11.19 0.1 undecidable manual P 96 1.0117 50 0.8 69
FR.SAOF.HHZ.00 2020-02-22T00:54:10.67 0.1 undecidable manual P 233 0.9964 50 0.55 77
GU.STV.HHZ. 2020-02-22T00:54:10.81 0.6 negative manual P 250 1.0108 50 0.45 40
GU.BHB.HHZ. 2020-02-22T00:54:10.48 0.1 positive manual P 284 1.0153 50 0.04 86
IV.PLMA.HHZ. 2020-02-22T00:54:10.98 0.1 undecidable manual P 122 1.018 50 0.49 78
GU.ENR.HHZ. 2020-02-22T00:54:09.59 0.6 undecidable manual P 248 0.9551 50 0.18 42
GU.CANO.HHZ. 2020-02-22T00:54:08.47 0.6 undecidable manual S 217 0.4901 50 -0.4 45
IV.IMI.HHZ. 2020-02-22T00:54:08.88 0.3 negative manual P 219 0.8759 50 0.82 53
GU.GORR.HHZ. 2020-02-22T00:54:07.44 0.6 undecidable manual S 89 0.4551 50 -0.4 45
IV.SARZ.HHZ. 2020-02-22T00:54:05.02 0.6 undecidable manual S 34 0.3265 50 0.99 37
GU.GBOS.HHZ. 2020-02-22T00:54:04.64 1.0 undecidable manual P 239 0.6808 50 -0.08 23
GU.ROTM.HHZ. 2020-02-22T00:54:03.94 0.6 undecidable manual S 320 0.3301 50 -0.18 48
IV.QLNO.HHZ. 2020-02-22T00:54:03.96 0.6 undecidable manual S 219 0.3498 50 -0.77 41
GU.RORO.HHZ. 2020-02-22T00:54:03.82 0.1 undecidable manual P 221 0.6412 50 -0.23 90
GU.CANO.HHZ. 2020-02-22T00:54:01.15 0.1 positive manual P 217 0.4901 50 -0.31 91
GU.GORR.HHZ. 2020-02-22T00:54:00.27 0.3 positive manual P 89 0.4551 50 -0.59 64
GU.RNCA.HHZ. 2020-02-22T00:54:00.96 0.6 undecidable manual S 121 0.2473 107 -0.35 47
IV.QLNO.HHZ. 2020-02-22T00:53:58.75 0.1 positive manual P 219 0.3498 50 -0.32 94
IV.SARZ.HHZ. 2020-02-22T00:53:58.43 0.1 positive manual P 34 0.3265 50 -0.24 96
GU.ROTM.HHZ. 2020-02-22T00:53:58.57 0.1 positive manual P 320 0.3301 50 -0.15 98
IT.ACQ.HGZ. 2020-02-22T00:53:57.65 0.6 undecidable manual S 302 0.1601 116 -0.52 46
GU.RNCA.HHZ. 2020-02-22T00:53:56.78 0.1 negative manual P 121 0.2473 107 -0.32 96
GU.PCP.HHZ. 2020-02-22T00:53:56.53 0.6 undecidable manual S 234 0.0953 129 0.47 48
IT.ACQ.HGZ. 2020-02-22T00:53:55.10 0.1 positive manual P 302 0.1601 116 -0.19 100
GU.PCP.HHZ. 2020-02-22T00:53:54.44 0.1 undecidable manual P 234 0.0953 129 0.38 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PCP.HHN. ML:2.5 0.004055 0.08 AML other m 2020-02-22T00:53:56.75
GU.PCP.HHE. ML:2.3 0.00246 0.92 AML other m 2020-02-22T00:53:57.03
GU.RNCA.HHN. ML:2.1 0.000683 0.22 AML other m 2020-02-22T00:54:01.17
GU.RNCA.HHE. ML:1.8 0.000322 1.04 AML other m 2020-02-22T00:54:02.02
GU.ROTM.HHE. ML:2.9 0.003025 0.22 AML other m 2020-02-22T00:54:04.12
IV.QLNO.HHE. ML:2.1 0.0004585 0.14 AML other m 2020-02-22T00:54:04.19
GU.ROTM.HHN. ML:3.1 0.00496 0.38 AML other m 2020-02-22T00:54:04.06
IV.QLNO.HHN. ML:2 0.000354 1.2 AML other m 2020-02-22T00:54:04.16
IV.SARZ.HHE. ML:2.5 0.00136 0.32 AML other m 2020-02-22T00:54:07.53
IV.SARZ.HNE. ML:2.5 0.001385 0.34 AML other m 2020-02-22T00:54:07.53
IV.SARZ.HHN. ML:2.7 0.00189 1.36 AML other m 2020-02-22T00:54:07.83
IV.SARZ.HNN. ML:2.7 0.0019 1.36 AML other m 2020-02-22T00:54:07.15
GU.CANO.HHN. ML:2.5 0.000807 0.26 AML other m 2020-02-22T00:54:09.21
GU.GORR.HHN. ML:1.8 0.0001565 0.42 AML other m 2020-02-22T00:54:09.28
GU.CANO.HHE. ML:2.4 0.0005905 1.72 AML other m 2020-02-22T00:54:12.87
GU.GORR.HHE. ML:1.8 0.000161 0.52 AML other m 2020-02-22T00:54:13.09
GU.GBOS.HHE. ML:2.1 0.0002015 1.52 AML other m 2020-02-22T00:54:14.03
GU.GBOS.HHN. ML:2.2 0.0002145 0.3 AML other m 2020-02-22T00:54:15.59
IV.IMI.HHE. ML:2.1 0.0001422 0.56 AML other m 2020-02-22T00:54:22.06
GU.ENR.HHN. ML:2.6 0.000333 0.16 AML other m 2020-02-22T00:54:23.77
IV.IMI.HHN. ML:2.3 0.000188 1.12 AML other m 2020-02-22T00:54:23.99
GU.ENR.HHE. ML:2.4 0.000234 0.6 AML other m 2020-02-22T00:54:24.66
GU.BHB.HHN. ML:2 8.665E-5 0.14 AML other m 2020-02-22T00:54:25.32
GU.BHB.HHE. ML:2.1 0.0001006 0.74 AML other m 2020-02-22T00:54:25.37
FR.SAOF.HHN.00 ML:2.1 0.0001175 0.56 AML other m 2020-02-22T00:54:27.68
GU.PZZ.HHN. ML:2.3 0.00014905 0.46 AML other m 2020-02-22T00:54:28.80
GU.PZZ.HHE. ML:2.3 0.0001355 0.22 AML other m 2020-02-22T00:54:29.17
FR.SAOF.HHE.00 ML:2.3 0.0001555 0.46 AML other m 2020-02-22T00:54:29.64
GU.GRAM.HHE. ML:1.9 6.6E-5 0.42 AML other m 2020-02-22T00:54:30.16
GU.GRAM.HHN. ML:1.9 6.885E-5 0.46 AML other m 2020-02-22T00:54:32.09
IV.FIR.HHE. ML:3.1 0.0003085 0.9 AML other m 2020-02-22T00:54:33.35
GU.CIRO.HHN. ML:1.8 3.41E-5 1.58 AML other m 2020-02-22T00:54:35.99
ST.RONC.HNE. ML:3.5 0.000805 1.06 AML other m 2020-02-22T00:54:41.71
IV.FIR.HHN. ML:3.2 0.0003355 0.08 AML other m 2020-02-22T00:54:41.42
GU.CIRO.HHE. ML:1.7 3.125E-5 0.42 AML other m 2020-02-22T00:54:46.25
ST.RONC.HNN. ML:3.2 0.0003525 0.42 AML other m 2020-02-22T00:55:20.72
IV.LAV9.HHE. ML:4 0.0003415 1.5 AML other m 2020-02-22T00:55:27.94
IV.LAV9.HHN. ML:4 0.0003875 0.06 AML other m 2020-02-22T00:55:28.15
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms

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 full SEED format Download