Earthquake with magnitude of ML 2.3 on date 22-02-2020 and time 00:53:51 (UTC) in region 3 km S Belforte Monferrato (AL)

A magnitude ML 2.3 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, 8.66 at 9 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
Belforte Monferrato AL 3 515 515
Rossiglione GE 4 2779 3294
Ovada AL 5 11477 14771
Tagliolo Monferrato AL 5 1581 16352
Molare AL 5 2181 18533
Lerma AL 6 869 19402
Campo Ligure GE 7 2955 22357
Casaleggio Boiro AL 7 372 22729
Cremolino AL 7 1086 23815
Cassinelle AL 8 914 24729
Tiglieto GE 8 546 25275
Rocca Grimalda AL 9 1512 26787
Mornese AL 9 737 27524
Trisobbio AL 9 655 28179
Prasco AL 10 521 28700
Montaldeo AL 10 265 28965
Carpeneto AL 10 977 29942
Silvano d'Orba AL 10 1988 31930
Castelletto d'Orba AL 11 2047 33977
Masone GE 11 3679 37656
Montaldo Bormida AL 11 664 38320
Morsasco AL 12 679 38999
Parodi Ligure AL 12 715 39714
Morbello AL 12 402 40116
Bosio AL 12 1227 41343
Orsara Bormida AL 13 424 41767
Urbe SV 13 700 42467
San Cristoforo AL 13 608 43075
Grognardo AL 14 259 43334
Visone AL 14 1194 44528
Voltaggio AL 15 738 45266
Capriata d'Orba AL 15 1904 47170
Rivalta Bormida AL 16 1446 48616
Gavi AL 16 4614 53230
Carrosio AL 16 510 53740
Ponzone AL 16 1051 54791
Strevi AL 16 2019 56810
Cavatore AL 17 291 57101
Francavilla Bisio AL 17 531 57632
Tassarolo AL 17 672 58304
Acqui Terme AL 17 19896 78200
Fraconalto AL 17 336 78536
Predosa AL 18 2048 80584
Mele GE 18 2725 83309
Sassello SV 19 1777 85086
Castelnuovo Bormida AL 19 694 85780
Pasturana AL 19 1318 87098
Cartosio AL 19 747 87845
Melazzo AL 19 1325 89170
Basaluzzo AL 20 2087 91257
Malvicino AL 20 85 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)
36 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)
91 Km E of Cuneo (56081 inhabitants)
94 Km SE of Torino (890529 inhabitants)
95 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 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. 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 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, 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 from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

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 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 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
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 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
Bulletin
Rev1000
ML 2.3 2020-02-22
00:53:51
44.6 8.66 9 2020-07-18
21:08:22
Bollettino Sismico Italiano INGV 76864981
Reviewed
Rev100
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 ± 0.06
Latitude 44.60 ± 0.00
Longitude 8.66 ± 0.00
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76864981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 297
Semi-minor axis of confidence ellipse (meter) 239
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 30
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 59
Number of defining phases 47
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.39395
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 76864981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-27 11:57:22

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
GU.SATI.HHZ. 2020-02-22T00:54:35.66 1.0 undecidable manual S 337 1.3939 50 0.27 19
ST.PANI.EHZ. 2020-02-22T00:54:31.82 3.0 positive manual Pn 1.73 0
GU.CIRO.HHZ. 2020-02-22T00:54:30.94 0.6 undecidable manual S 323 1.2662 50 -0.65 35
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 1.1026 50 0.37 59
SI.LUSI.HHZ. 2020-02-22T00:54:27.49 3.0 negative manual Pn 1.12 0
GU.RSP.HNN. 2020-02-22T00:54:27.85 0.6 undecidable manual S 300 1.1304 50 0.27 40
GU.BURY.HNN. 2020-02-22T00:54:27.61 0.6 undecidable manual S 225 1.1331 50 -0.04 42
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.STV.HHZ. 2020-02-22T00:54:23.70 0.6 undecidable manual S 250 1.0135 50 -0.41 40
GU.BHB.HHZ. 2020-02-22T00:54:23.91 0.6 undecidable manual S 284 1.0189 50 -0.37 40
IV.PLMA.HHZ. 2020-02-22T00:54:23.79 0.6 undecidable manual S 122 1.0135 50 -0.33 41
GU.ENR.HHZ. 2020-02-22T00:54:22.47 0.6 undecidable manual S 248 0.9578 50 0.01 44
IV.IMI.HHZ. 2020-02-22T00:54:20.44 0.6 undecidable manual S 219 0.8768 50 0.37 41
GU.SATI.HHZ. 2020-02-22T00:54:16.81 0.1 undecidable manual P 337 1.3939 50 0.09 77
GU.CIRO.HHZ. 2020-02-22T00:54:14.28 0.1 undecidable manual P 323 1.2662 50 -0.25 78
GU.GBOS.HHZ. 2020-02-22T00:54:13.83 0.3 undecidable manual S 239 0.6835 50 -0.49 63
GU.RORO.HHZ. 2020-02-22T00:54:12.96 0.6 undecidable manual S 221 0.6421 50 -0.16 46
GU.BURY.HNN. 2020-02-22T00:54:12.38 0.1 undecidable manual P 225 1.1331 50 0.12 82
GU.TRAV.HHZ. 2020-02-22T00:54:12.51 0.3 undecidable manual P 325 1.1197 50 0.48 57
GU.RSP.HNN. 2020-02-22T00:54:11.75 0.6 undecidable manual P 300 1.1304 50 -0.46 38
GU.PZZ.HHZ. 2020-02-22T00:54:11.99 0.3 undecidable manual P 266 1.1026 50 0.26 60
GU.GRAM.HHZ. 2020-02-22T00:54:10.52 0.6 undecidable manual P 95 1.0081 50 0.41 40
GU.STV.HHZ. 2020-02-22T00:54:10.67 0.3 undecidable manual P 250 1.0135 50 0.46 59
GU.BHB.HHZ. 2020-02-22T00:54:10.48 0.1 positive manual P 284 1.0189 50 0.17 84
IV.PLMA.HHZ. 2020-02-22T00:54:10.62 0.6 undecidable manual P 122 1.0135 50 0.41 40
FR.SAOF.HHZ.00 2020-02-22T00:54:10.12 0.6 undecidable manual P 233 0.9982 50 0.17 42
GU.ENR.HHZ. 2020-02-22T00:54:09.59 0.3 undecidable manual P 248 0.9578 50 0.33 62
GU.CANO.HHZ. 2020-02-22T00:54:08.47 0.6 undecidable manual S 218 0.491 50 -0.16 47
IV.IMI.HHZ. 2020-02-22T00:54:08.26 0.6 undecidable manual P 219 0.8768 50 0.38 41
GU.GORR.HHZ. 2020-02-22T00:54:07.44 0.6 undecidable manual S 88 0.4515 50 -0.01 49
IV.MONC.HHN. 2020-02-22T00:54:05.34 0.6 undecidable manual P 313 0.7051 50 0.41 43
IV.QLNO.HHZ. 2020-02-22T00:54:04.05 0.3 undecidable manual S 220 0.3516 50 -0.44 68
GU.GBOS.HHZ. 2020-02-22T00:54:04.68 0.3 undecidable manual P 239 0.6835 50 0.12 68
IV.SARZ.HHZ. 2020-02-22T00:54:03.92 0.6 undecidable manual S 34 0.3265 50 0.18 48
GU.ROTM.HHZ. 2020-02-22T00:54:03.84 0.3 undecidable manual S 319 0.3336 50 -0.13 73
GU.RORO.HHZ. 2020-02-22T00:54:03.82 0.1 undecidable manual P 221 0.6421 50 -0.04 93
IV.BOB.HNE. 2020-02-22T00:54:03.36 0.3 undecidable manual P 73 0.5864 50 0.45 65
IT.GNV.HGZ. 2020-02-22T00:54:01.45 0.3 undecidable manual S 130 0.2545 108 -0.1 75
GU.CANO.HHZ. 2020-02-22T00:54:01.15 0.1 positive manual P 218 0.491 50 -0.12 95
GU.GORR.HHZ. 2020-02-22T00:54:00.27 0.3 positive manual P 88 0.4515 50 -0.32 69
GU.RNCA.HHZ. 2020-02-22T00:54:00.91 0.3 undecidable manual S 121 0.2428 109 -0.2 73
IV.SARZ.HHZ. 2020-02-22T00:53:58.43 0.1 positive manual P 34 0.3265 50 -0.02 100
GU.ROTM.HHZ. 2020-02-22T00:53:58.57 0.1 positive manual P 319 0.3336 50 -0.01 100
IV.QLNO.HHZ. 2020-02-22T00:53:58.75 0.1 positive manual P 220 0.3516 50 -0.13 97
IT.ACQ.HGZ. 2020-02-22T00:53:57.69 0.3 undecidable manual S 302 0.1646 117 -0.63 66
IT.GNV.HGZ. 2020-02-22T00:53:57.02 0.3 undecidable manual P 130 0.2545 108 -0.16 74
GU.RNCA.HHZ. 2020-02-22T00:53:56.78 0.1 negative manual P 121 0.2428 109 -0.15 99
GU.PCP.HHZ. 2020-02-22T00:53:56.44 0.1 undecidable manual S 236 0.0971 131 0.27 99
IT.ACQ.HGZ. 2020-02-22T00:53:55.10 0.1 positive manual P 302 0.1646 117 -0.22 99
GU.PCP.HHZ. 2020-02-22T00:53:54.44 0.1 undecidable manual P 236 0.0971 131 0.36 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
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

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 miniseed + resp format Download