Earthquake with magnitude of ML 1.1 on date 22-02-2020 and time 03:45:34 (UTC) in region 3 km S Belforte Monferrato (AL)

A magnitude ML 1.1 earthquake occured in region: 3 km S Belforte Monferrato (AL), on

  • 22-02-2020 03:45:34 (UTC)
  • 22-02-2020 04:45:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.6, 8.65 at 10 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 4 11477 14771
Tagliolo Monferrato AL 5 1581 16352
Molare AL 5 2181 18533
Lerma AL 6 869 19402
Cremolino AL 7 1086 20488
Casaleggio Boiro AL 7 372 20860
Cassinelle AL 8 914 21774
Campo Ligure GE 8 2955 24729
Rocca Grimalda AL 8 1512 26241
Tiglieto GE 9 546 26787
Trisobbio AL 9 655 27442
Mornese AL 9 737 28179
Prasco AL 9 521 28700
Carpeneto AL 10 977 29677
Montaldeo AL 10 265 29942
Silvano d'Orba AL 10 1988 31930
Castelletto d'Orba AL 10 2047 33977
Montaldo Bormida AL 11 664 34641
Morsasco AL 11 679 35320
Morbello AL 11 402 35722
Parodi Ligure AL 12 715 36437
Masone GE 12 3679 40116
Bosio AL 12 1227 41343
Orsara Bormida AL 12 424 41767
San Cristoforo AL 13 608 42375
Grognardo AL 13 259 42634
Urbe SV 13 700 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
Gavi AL 15 4614 55249
Ponzone AL 16 1051 56300
Carrosio AL 16 510 56810
Cavatore AL 16 291 57101
Francavilla Bisio AL 16 531 57632
Tassarolo AL 17 672 58304
Acqui Terme AL 17 19896 78200
Predosa AL 17 2048 80248
Fraconalto AL 18 336 80584
Castelnuovo Bormida AL 18 694 81278
Pasturana AL 18 1318 82596
Melazzo AL 19 1325 83921
Mele GE 19 2725 86646
Cartosio AL 19 747 87393
Sassello SV 19 1777 89170
Basaluzzo AL 19 2087 91257
Cassine AL 19 2961 94218
Malvicino AL 20 85 94303

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of Genova (586655 inhabitants)
35 Km S of Alessandria (93943 inhabitants)
35 Km NE of Savona (61345 inhabitants)
49 Km SE of Asti (76202 inhabitants)
76 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
Seismic hazard
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 1.1 2020-02-22
03:45:34
44.6 8.66 10 2020-02-22
03:50:58
Sala Sismica INGV-Roma 76710741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-22 03:45:34 ± 0.16
Latitude 44.60 ± 0.01
Longitude 8.66 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76710741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 961
Semi-minor axis of confidence ellipse (meter) 704
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 247
Circular confidence region, given by single value of horizontal uncertainty (meter) 960
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 162
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.09803
Epicentral distance of station farthest from the epicenter (degree) 0.49373
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 76710741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-22 03:50:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.CANO.HHZ. 2020-02-22T03:45:51.56 0.6 undecidable manual S 217 0.4937 50 -0.22 47
IV.QLNO.HHZ. 2020-02-22T03:45:47.21 0.3 undecidable manual S 219 0.3534 50 -0.43 70
GU.ROTM.HHZ. 2020-02-22T03:45:47.16 0.3 undecidable manual S 319 0.3292 50 0.26 73
GU.RNCA.HHZ. 2020-02-22T03:45:44.26 0.3 undecidable manual S 121 0.2473 50 -0.22 74
GU.CANO.HHZ. 2020-02-22T03:45:44.75 0.1 undecidable manual P 217 0.4937 50 0.29 93
IV.QLNO.HHZ. 2020-02-22T03:45:42.23 0.3 undecidable manual P 219 0.3534 50 0.16 74
GU.ROTM.HHZ. 2020-02-22T03:45:41.86 0.1 undecidable manual P 319 0.3292 50 0.22 98
GU.RNCA.HHZ. 2020-02-22T03:45:40.14 0.3 undecidable manual P 121 0.2473 50 -0.11 76
IT.ACQ.HGZ. 2020-02-22T03:45:40.86 0.3 undecidable manual S 301 0.1601 119 -0.67 67
GU.PCP.HHZ. 2020-02-22T03:45:39.75 0.3 undecidable manual S 233 0.098 132 0.16 78
IT.ACQ.HGZ. 2020-02-22T03:45:38.37 0.3 undecidable manual P 301 0.1601 119 -0.17 76
GU.PCP.HHZ. 2020-02-22T03:45:37.74 0.1 undecidable manual P 233 0.098 132 0.32 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PCP.HHE. ML:1 0.00012931934 0.08 AML other m 2020-02-22T03:45:40.35
GU.PCP.HHN. ML:1.3 0.0002202185 0.08 AML other m 2020-02-22T03:45:40.07
GU.RNCA.HHE. ML:0.7 2.2737785E-5 0.16 AML other m 2020-02-22T03:45:45.44
GU.RNCA.HHN. ML:0.9 4.584163E-5 0.2016 AML other m 2020-02-22T03:45:44.51
GU.ROTM.HHE. ML:1.7 0.00019766975 0.16 AML other m 2020-02-22T03:45:47.47
GU.ROTM.HHN. ML:1.8 0.00026548235 0.2208 AML other m 2020-02-22T03:45:47.26
IV.QLNO.HHE. ML:0.8 2.21326835E-5 0.1408 AML other m 2020-02-22T03:45:47.53
IV.QLNO.HHN. ML:0.6 1.6906985E-5 0.1792 AML other m 2020-02-22T03:45:48.51
GU.CANO.HHE. ML:1.1 3.1010767E-5 0.16 AML other m 2020-02-22T03:45:52.79
GU.CANO.HHN. ML:1.4 5.84698E-5 0.2592 AML other m 2020-02-22T03:45:52.55
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download