Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 14-12-2021 and time 22:40:30 (Italy) in region 3 km S Bolognola (MC)

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

  • 14-12-2021 21:40:30 (UTC)
  • 14-12-2021 22:40:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9650, 13.2270 at 5 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.

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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 8 444 586
Acquacanina MC 9 121 707
Montefortino FM 10 1178 1885
Castelsantangelo sul Nera MC 10 281 2166
Fiastra MC 10 559 2725
Sarnano MC 10 3264 5989
Amandola FM 11 3629 9618
Montemonaco AP 11 604 10222
Visso MC 12 1107 11329
Fiordimonte MC 14 202 11531
Gualdo MC 15 815 12346
Comunanza AP 15 3166 15512
Pievebovigliana MC 16 866 16378
Montegallo AP 16 523 16901
Cessapalombo MC 16 512 17413
Pieve Torina MC 17 1458 18871
San Ginesio MC 18 3498 22369
Preci PG 18 724 23093
Smerillo FM 18 365 23458
Monte Cavallo MC 19 145 23603
Monte San Martino MC 19 765 24368
Camporotondo di Fiastrone MC 19 563 24931
Penna San Giovanni MC 19 1108 26039
Montefalcone Appennino FM 19 424 26463
Caldarola MC 19 1823 28286
Muccia MC 20 915 29201

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
52 Km NW of Teramo (54892 inhabitants)
65 Km NE of Terni (111501 inhabitants)
70 Km N of L'Aquila (69753 inhabitants)
70 Km E of Perugia (166134 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
91 Km NW of Montesilvano (53738 inhabitants)
98 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
Reviewed
Rev100 		ML 0.6 2021-12-14
21:40:30		 42.9647 13.2272 5 2021-12-14
22:14:10		 Sala Sismica INGV-Roma 98523591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-14 21:40:30 ± 0.17
Latitude 42.9647 ± 0.0027
Longitude 13.2272 ± 0.0049
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98523591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 420
Semi-minor axis of confidence ellipse (meter) 132
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 100
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.06025
Epicentral distance of station farthest from the epicenter (degree) 0.17177
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 98523591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-14 22:14:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2021-12-14T21:40:37.36 0.3 undecidable manual S 212 17.1717 108 0.13 74
IV.GUMA.HHZ. 2021-12-14T21:40:36.54 0.6 undecidable manual S 39 13.9749 111 0.37 47
IV.CSP1.EHZ. 2021-12-14T21:40:36.16 0.3 undecidable manual S 353 14.1747 111 -0.09 75
IV.FDMO.HHZ. 2021-12-14T21:40:36.12 0.6 undecidable manual S 305 13.875 111 -0.02 51
IV.MF5.EHZ. 2021-12-14T21:40:35.12 0.1 undecidable manual P 82 19.0698 106 0.18 97
IV.MC2.EHZ. 2021-12-14T21:40:34.02 0.3 undecidable manual S 208 6.6933 129 0.07 76
IV.MMO1.EHZ. 2021-12-14T21:40:34.90 0.3 undecidable manual S 132 10.878 117 -0.28 72
IV.GUMA.HHZ. 2021-12-14T21:40:34.15 0.1 undecidable manual P 39 13.9749 111 0.18 98
IV.NRCA.HHZ. 2021-12-14T21:40:34.63 0.1 undecidable manual P 212 17.1717 108 0.05 100
IV.FDMO.HHZ. 2021-12-14T21:40:33.80 0.1 undecidable manual P 305 13.875 111 -0.16 98
IV.MMO1.EHZ. 2021-12-14T21:40:33.13 0.1 undecidable manual P 132 10.878 117 -0.27 97
IV.CSP1.EHZ. 2021-12-14T21:40:33.81 0.1 undecidable manual P 353 14.1747 111 -0.21 97
IV.MC2.EHZ. 2021-12-14T21:40:32.84 0.1 undecidable manual P 208 6.6933 129 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MMO1.EHN. ML:0.8 0.00009154999999999999 1.12 AML other m 2021-12-14T21:40:35.02
IV.MMO1.EHE. ML:0.8 0.0000894 0.94 AML other m 2021-12-14T21:40:35.50
IV.MC2.EHE. ML:0.0 0.00012795162000000003 0.2176 AML other m 2021-12-14T21:40:35.92
IV.MC2.EHN. ML:0.0 0.00021592273199999999 0.1408 AML other m 2021-12-14T21:40:35.48
IV.FDMO.HHE. ML:0.5 0.000034560672 0.448 AML other m 2021-12-14T21:40:36.61
IV.FDMO.HHN. ML:0.4 0.000028988690000000002 0.2432 AML other m 2021-12-14T21:40:36.36
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