Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 06-02-2021 and time 23:45:16 (Italy) in region 3 km S Bolognola (MC)

A magnitude ML 0.6 earthquake occured in region: 3 km S Bolognola (MC), on

  • 06-02-2021 22:45:16 (UTC)
  • 06-02-2021 23:45:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9690, 13.2230 at 6 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Bolognola MC 3 142 142
Ussita MC 7 444 586
Acquacanina MC 8 121 707
Fiastra MC 9 559 1266
Castelsantangelo sul Nera MC 10 281 1547
Sarnano MC 10 3264 4811
Montefortino FM 10 1178 5989
Amandola FM 11 3629 9618
Montemonaco AP 12 604 10222
Visso MC 12 1107 11329
Fiordimonte MC 13 202 11531
Gualdo MC 15 815 12346
Pievebovigliana MC 15 866 13212
Comunanza AP 16 3166 16378
Cessapalombo MC 16 512 16890
Pieve Torina MC 16 1458 18348
Montegallo AP 17 523 18871
San Ginesio MC 17 3498 22369
Preci PG 18 724 23093
Monte Cavallo MC 18 145 23238
Camporotondo di Fiastrone MC 19 563 23801
Smerillo FM 19 365 24166
Caldarola MC 19 1823 25989
Monte San Martino MC 19 765 26754
Penna San Giovanni MC 19 1108 27862
Muccia MC 19 915 28777
Montefalcone Appennino FM 20 424 29201

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
52 Km NW of Teramo (54892 inhabitants)
65 Km NE of Terni (111501 inhabitants)
70 Km E of Perugia (166134 inhabitants)
70 Km N of L'Aquila (69753 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
91 Km NW of Montesilvano (53738 inhabitants)
99 Km NW of Pescara (121014 inhabitants)
99 Km S of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 0.6 2021-02-06
22:45:16		 42.9693 13.2227 6 2021-07-12
16:55:10		 Bollettino Sismico Italiano INGV 90058341
Reviewed
Rev100 		ML 0.5 2021-02-06
22:45:16		 42.9702 13.2237 7 2021-02-06
23:06:08		 Sala Sismica INGV-Roma 86893001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-06 22:45:16 ± 0.04
Latitude 42.9693 ± 0.0018
Longitude 13.2227 ± 0.0037
Depth (km) 6 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90058341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 269
Semi-minor axis of confidence ellipse (meter) 50
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.46855
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 90058341
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-13 16:25:32

ML:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 86893001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-06 23:06:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FOSV.HNE. 2021-02-06T22:45:34.18 0.6 undecidable manual S 314 52.0035 50 0.04 53
IV.ARCI.HHZ. 2021-02-06T22:45:33.55 3.0 undecidable manual Pn -0.05 0
IV.TERO.HHN. 2021-02-06T22:45:33.75 0.3 undecidable manual S 141 49.4172 50 0.3 76
IV.CING.HNZ. 2021-02-06T22:45:32.30 0.6 undecidable manual S 357 45.1215 50 -0.01 54
IV.LNSS.HNZ. 2021-02-06T22:45:32.00 0.6 undecidable manual S 200 43.3233 50 0.18 53
IV.CPGN.EHZ. 2021-02-06T22:45:31.62 3.0 negative manual P 0.07 0
IV.TERO.HHN. 2021-02-06T22:45:26.47 1.0 undecidable manual P 141 49.4172 50 0.06 27
IV.FOSV.HNE. 2021-02-06T22:45:26.61 1.0 undecidable manual P 314 52.0035 50 -0.19 26
IV.MML1.HNE. 2021-02-06T22:45:26.05 0.6 undecidable manual S 308 25.8519 104 0.02 56
IV.CESI.HHE. 2021-02-06T22:45:26.40 0.6 undecidable manual S 279 26.1516 104 0.29 53
IV.CING.HNZ. 2021-02-06T22:45:25.84 1.0 undecidable manual P 357 45.1215 50 0.1 27
IV.LNSS.HNZ. 2021-02-06T22:45:25.03 0.1 undecidable manual P 200 43.3233 50 -0.43 100
IV.NRCA.HHZ. 2021-02-06T22:45:23.39 0.6 undecidable manual S 210 17.4714 110 0.17 55
IV.CESI.HHE. 2021-02-06T22:45:22.18 0.3 undecidable manual P 279 26.1516 104 0.02 84
IV.GUMA.HNN. 2021-02-06T22:45:22.48 0.6 undecidable manual S 41 13.7751 115 0.42 53
IV.MMO1.EHZ. 2021-02-06T22:45:21.20 0.3 undecidable manual S 133 11.4774 119 -0.13 84
IV.MF5.EHN. 2021-02-06T22:45:21.15 1.0 undecidable manual P 84 19.3695 108 0.29 27
IV.CSP1.EHZ. 2021-02-06T22:45:21.90 0.3 undecidable manual S 354 13.6752 115 -0.11 84
IV.FDMO.HHZ. 2021-02-06T22:45:21.99 0.3 undecidable manual S 304 13.2756 116 0.1 85
IV.MML1.HNE. 2021-02-06T22:45:21.95 0.3 undecidable manual P 308 25.8519 104 -0.16 82
IV.MC2.EHZ. 2021-02-06T22:45:20.01 0.6 undecidable manual S 203 6.993 133 -0.05 58
IV.PF6.EHN. 2021-02-06T22:45:20.65 0.6 undecidable manual P 353 18.87 109 -0.11 56
IV.SAP2.EHE. 2021-02-06T22:45:20.78 1.0 undecidable manual P 45 20.0688 108 -0.22 27
IV.NRCA.HHZ. 2021-02-06T22:45:20.66 1.0 undecidable manual P 210 17.4714 110 0.16 28
IV.FDMO.HHZ. 2021-02-06T22:45:19.75 0.3 undecidable manual P 304 13.2756 116 0.02 86
IV.MMO1.EHZ. 2021-02-06T22:45:19.27 0.3 undecidable manual P 133 11.4774 119 -0.13 84
IV.GUMA.HNN. 2021-02-06T22:45:19.88 0.3 undecidable manual P 41 13.7751 115 0.06 85
IV.CSP1.EHZ. 2021-02-06T22:45:19.70 0.3 undecidable manual P 354 13.6752 115 -0.09 85
IV.MC2.EHZ. 2021-02-06T22:45:18.74 0.3 undecidable manual P 203 6.993 133 0.07 86
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.4 0.0000276 0.7 AML other m 2021-02-06T22:45:23.43
IV.FDMO.HHE. ML:0.2 0.00001855668 1.3568 AML other m 2021-02-06T22:45:22.50
IV.CSP1.EHE. ML:0.9 0.0000981739 3.0208 AML other m 2021-02-06T22:45:22.64
IV.CSP1.EHN. ML:0.8 0.00007446680999999999 2.1888 AML other m 2021-02-06T22:45:22.72
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download