Earthquake with magnitude of ML 2.2 on date 15-02-2021 and time 19:00:46 (Italy) in region 7 km SE Fabbrica Curone (AL)

A magnitude ML 2.2 earthquake occured in region: 7 km SE Fabbrica Curone (AL), on

  • 15-02-2021 18:00:46 (UTC)
  • 15-02-2021 19:00:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.697, 9.195 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
Fabbrica Curone AL 7 656 656
Cabella Ligure AL 8 528 1184
Zerba PC 8 77 1261
Brallo di Pregola PV 8 599 1860
Carrega Ligure AL 9 84 1944
Santa Margherita di Staffora PV 9 473 2417
Albera Ligure AL 10 325 2742
Montacuto AL 10 278 3020
Rocchetta Ligure AL 11 200 3220
Cantalupo Ligure AL 12 527 3747
Mongiardino Ligure AL 12 165 3912
Cerignale PC 13 127 4039
Gorreto GE 13 97 4136
Menconico PV 13 360 4496
Gremiasco AL 13 324 4820
Roccaforte Ligure AL 13 136 4956
Ottone PC 14 516 5472
Dernice AL 14 185 5657
Varzi PV 14 3279 8936
San Sebastiano Curone AL 14 583 9519
Propata GE 15 142 9661
Corte Brugnatella PC 15 586 10247
Rovegno GE 15 554 10801
Rondanina GE 15 62 10863
Fascia GE 15 81 10944
Bagnaria PV 15 658 11602
Vobbia GE 16 409 12011
Bobbio PC 17 3577 15588
Brignano-Frascata AL 18 456 16044
Garbagna AL 18 696 16740
Coli PC 18 879 17619
Grondona AL 18 510 18129
Crocefieschi GE 18 548 18677
Valbrevenna GE 19 798 19475
Fontanigorda GE 19 277 19752
Ponte Nizza PV 19 807 20559
Valverde PV 19 287 20846
Cecima PV 19 236 21082
Romagnese PV 19 687 21769
Montebruno GE 19 240 22009
Isola del Cantone GE 20 1540 23549
Torriglia GE 20 2311 25860
Zavattarello PV 20 991 26851

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NE of Genova (586655 inhabitants)
52 Km E of Alessandria (93943 inhabitants)
54 Km S of Pavia (72576 inhabitants)
56 Km SW of Piacenza (102191 inhabitants)
71 Km NE of Savona (61345 inhabitants)
74 Km SE of Vigevano (63310 inhabitants)
81 Km E of Asti (76202 inhabitants)
82 Km SW of Cremona (71901 inhabitants)
83 Km NW of La Spezia (93959 inhabitants)
86 Km S of Milano (1345851 inhabitants)
90 Km W of Parma (192836 inhabitants)
93 Km S of Sesto San Giovanni (81608 inhabitants)
93 Km S of Rho (50434 inhabitants)
95 Km SE of Novara (104380 inhabitants)
96 Km S of Cinisello Balsamo (75078 inhabitants)
99 Km S of Monza (122671 inhabitants)
99 Km NW of Carrara (63133 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
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
Bulletin
Rev1000
ML 2.2 2021-02-15
18:00:46
44.6972 9.195 9 2021-07-12
16:55:00
Bollettino Sismico Italiano INGV 87669521
Reviewed
Rev100
ML 2.1 2021-02-15
18:00:46
44.7018 9.182 9 2021-02-15
18:08:30
Sala Sismica INGV-Roma 87184611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-15 18:00:46 ± 0.13
Latitude 44.6972 ± 0.0090
Longitude 9.1950 ± 0.0089
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87669521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 804
Semi-minor axis of confidence ellipse (meter) 763
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 142
Circular confidence region, given by single value of horizontal uncertainty (meter) 800
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.11331
Epicentral distance of station farthest from the epicenter (degree) 0.83997
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 87669521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-18 15:39:54

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 87184611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-15 18:08:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.CANO.HHZ. 2021-02-15T18:01:15.22 0.6 undecidable manual S 235 0.84 50 0.81 35
GU.PCP.HHN. 2021-02-15T18:01:03.96 0.6 undecidable manual S 252 0.4874 50 0.01 47
GU.CANO.HHZ. 2021-02-15T18:01:03.41 0.3 undecidable manual P 235 0.84 50 0.79 52
IV.MSSA.HHZ. 2021-02-15T18:01:03.23 0.6 undecidable manual S 149 0.4443 50 0.55 42
IT.GNV.HGE. 2021-02-15T18:00:59.12 0.3 undecidable manual S 215 0.3247 50 0 73
GU.GRAM.HHZ. 2021-02-15T18:00:59.80 0.3 undecidable manual P 108 0.6529 50 0.39 63
GU.RNCA.HHE. 2021-02-15T18:00:58.07 0.6 undecidable manual S 218 0.2851 105 0.19 47
IV.SARZ.HHE. 2021-02-15T18:00:57.63 0.6 undecidable manual S 311 0.2626 107 0.58 43
IV.MSSA.HHZ. 2021-02-15T18:00:55.30 0.1 undecidable manual P 149 0.4443 50 -0.55 84
GU.PCP.HHN. 2021-02-15T18:00:55.82 0.1 undecidable manual P 252 0.4874 50 -0.76 76
IV.BOB.HHZ. 2021-02-15T18:00:54.54 0.3 undecidable manual S 68 0.1934 112 0.01 75
IT.GNV.HGE. 2021-02-15T18:00:53.52 0.3 undecidable manual P 215 0.3247 50 -0.28 69
IV.SARZ.HHE. 2021-02-15T18:00:52.58 0.3 undecidable manual P 311 0.2626 107 -0.02 73
GU.GORR.HHZ. 2021-02-15T18:00:52.19 0.6 undecidable manual S 142 0.1133 124 0.37 47
GU.RNCA.HHE. 2021-02-15T18:00:52.65 0.1 positive manual P 218 0.2851 105 -0.43 89
IV.BOB.HHZ. 2021-02-15T18:00:51.00 0.1 undecidable manual P 68 0.1934 112 -0.14 97
GU.GORR.HHZ. 2021-02-15T18:00:49.63 0.1 positive manual P 142 0.1133 124 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GORR.HHN. ML:2.4 0.00275 0.22 AML other m 2021-02-15T18:00:52.44
GU.GORR.HHE. ML:2.3 0.00226 0.88 AML other m 2021-02-15T18:00:53.50
IV.BOB.HHN. ML:1.7 0.0003545 1.28 AML other m 2021-02-15T18:00:54.30
IV.BOB.HHE. ML:1.7 0.000385 1.26 AML other m 2021-02-15T18:00:55.97
IV.MSSA.HHE. ML:2.4 0.0006215 0.1 AML other m 2021-02-15T18:01:03.58
IV.MSSA.HHN. ML:2.2 0.000476 0.1 AML other m 2021-02-15T18:01:03.61
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