Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 30-12-2021 and time 17:14:16 (Italy) in region 6 km W Montefortino (FM)

A magnitude ML 1.1 earthquake occured in region: 6 km W Montefortino (FM), on

  • 30-12-2021 16:14:16 (UTC)
  • 30-12-2021 17:14:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9480, 13.2730 at 24 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
Montefortino FM 6 1178 1178
Bolognola MC 6 142 1320
Montemonaco AP 7 604 1924
Amandola FM 8 3629 5553
Sarnano MC 10 3264 8817
Ussita MC 11 444 9261
Castelsantangelo sul Nera MC 11 281 9542
Comunanza AP 12 3166 12708
Acquacanina MC 12 121 12829
Montegallo AP 13 523 13352
Fiastra MC 14 559 13911
Gualdo MC 14 815 14726
Visso MC 15 1107 15833
Smerillo FM 15 365 16198
Montefalcone Appennino FM 16 424 16622
Palmiano AP 16 196 16818
Monte San Martino MC 17 765 17583
Penna San Giovanni MC 17 1108 18691
Fiordimonte MC 18 202 18893
Force AP 18 1354 20247
Cessapalombo MC 18 512 20759
San Ginesio MC 18 3498 24257
Roccafluvione AP 19 2010 26267
Venarotta AP 19 2066 28333
Arquata del Tronto AP 20 1178 29511
Sant'Angelo in Pontano MC 20 1436 30947
Pievebovigliana MC 20 866 31813
Santa Vittoria in Matenano FM 20 1330 33143

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km E of Foligno (57155 inhabitants)
48 Km NW of Teramo (54892 inhabitants)
67 Km NE of Terni (111501 inhabitants)
67 Km N of L'Aquila (69753 inhabitants)
74 Km E of Perugia (166134 inhabitants)
77 Km S of Ancona (100861 inhabitants)
86 Km NW of Montesilvano (53738 inhabitants)
94 Km NW of Pescara (121014 inhabitants)
99 Km NW of Chieti (51815 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 1.1 2021-12-30
16:14:16		 42.9485 13.2733 24 2021-12-30
16:20:46		 Sala Sismica INGV-Roma 99159601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-30 16:14:16 ± 0.16
Latitude 42.9485 ± 0.0063
Longitude 13.2733 ± 0.0098
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 99159601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 747
Semi-minor axis of confidence ellipse (meter) 339
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 295
Circular confidence region, given by single value of horizontal uncertainty (meter) 750.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.16368
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 99159601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-30 16:20:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AGLI.HHZ. 2021-12-30T16:15:57.15 3.0 undecidable manual Sg 4.64 0
CR.ZAG.BHZ. 2021-12-30T16:15:55.92 3.0 undecidable manual Sg 8.11 0
IV.CDRU.HHZ. 2021-12-30T16:15:53.82 3.0 undecidable manual Sg 7.22 0
GU.RNCA.HHZ. 2021-12-30T16:15:52.92 3.0 undecidable manual Sg 10.39 0
IV.ESCV.HHZ. 2021-12-30T16:15:45.23 3.0 negative manual Pg 6.76 0
IX.CSG3.HNZ.01 2021-12-30T16:15:37.95 3.0 undecidable manual Sn -3.63 0
IV.IST3.HHZ. 2021-12-30T16:15:33.97 3.0 positive manual Pg 7.99 0
OT.OT05.EHZ. 2021-12-30T16:15:30.42 3.0 undecidable manual Sg 2.19 0
IV.CRND.HNZ. 2021-12-30T16:15:21.62 3.0 undecidable manual Sn -9.02 0
IV.PTRJ.HHZ. 2021-12-30T16:15:13.83 3.0 undecidable manual Sn -7.07 0
IX.NSC3.EHZ.02 2021-12-30T16:15:07.12 3.0 negative manual Pg 6.9 0
IV.ZCCA.HHZ. 2021-12-30T16:15:06.88 3.0 undecidable manual Sn -2.84 0
IV.CADC.EHZ. 2021-12-30T16:15:00.52 3.0 positive manual Pn -0.41 0
IV.CMPR.HHZ. 2021-12-30T16:14:59.69 3.0 undecidable manual Pn -7.7 0
IV.SGO.HHZ. 2021-12-30T16:14:59.44 3.0 undecidable manual Pn -5.13 0
IV.CDRU.HHZ. 2021-12-30T16:14:58.19 3.0 undecidable manual Pn -7.19 0
IV.MNTV.EHZ. 2021-12-30T16:14:58.50 3.0 undecidable manual Pg 4.99 0
IV.VIVA.HHZ. 2021-12-30T16:14:43.05 3.0 negative manual P 1.84 0
IV.IMOL.HNZ. 2021-12-30T16:14:32.94 3.0 positive manual P -6.28 0
IV.CSP1.EHZ. 2021-12-30T16:14:25.02 0.3 undecidable manual S 341 16.872 141 0.09 74
IV.NRCA.HHZ. 2021-12-30T16:14:25.33 0.6 undecidable manual S 225 18.1707 138 0.17 48
IV.FDMO.HHZ. 2021-12-30T16:14:24.97 0.3 undecidable manual S 303 17.9709 139 -0.16 74
IV.MF5.EHZ. 2021-12-30T16:14:24.94 0.6 undecidable manual S 74 15.7731 143 0.19 49
IV.GUMA.HHZ. 2021-12-30T16:14:24.46 0.3 undecidable manual S 22 13.6752 147 0.04 76
IV.MMO1.EHZ. 2021-12-30T16:14:23.46 0.6 undecidable manual S 141 6.993 162 -0.19 49
IV.NRCA.HHZ. 2021-12-30T16:14:21.40 0.1 positive manual P 225 18.1707 138 0.1 98
IV.CSP1.EHZ. 2021-12-30T16:14:21.02 0.1 undecidable manual P 341 16.872 141 -0.15 98
IV.FDMO.HHZ. 2021-12-30T16:14:21.29 0.1 undecidable manual P 303 17.9709 139 0.01 100
IV.MF5.EHZ. 2021-12-30T16:14:20.95 1.0 undecidable manual P 74 15.7731 143 -0.11 24
IV.GUMA.HHZ. 2021-12-30T16:14:20.96 0.1 undecidable manual P 22 13.6752 147 0.09 100
IV.MMO1.EHZ. 2021-12-30T16:14:20.31 0.1 undecidable manual P 141 6.993 162 -0.12 100
IV.CRTC.HHZ. 2021-12-30T16:14:17.73 3.0 positive manual P -5.71 0
IV.MC2.EHZ. 2021-12-30T16:14:17.26 3.0 undecidable manual P -4.32 0
IV.FOSV.EHZ. 2021-12-30T16:14:13.07 3.0 undecidable manual P -2.57 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.3 0.00010025000000000001 0.12 AML other m 2021-12-30T16:14:25.66
IV.NRCA.HHN. ML:1.2 0.00009090000000000001 0.68 AML other m 2021-12-30T16:14:26.78
IV.MMO1.EHE. ML:1.1 0.00007499169 0.1792 AML other m 2021-12-30T16:14:23.47
IV.MMO1.EHN. ML:0.9 0.00004760361 0.1024 AML other m 2021-12-30T16:14:23.80
IV.MF5.EHE. ML:1.1 0.000068032458 1.9072 AML other m 2021-12-30T16:14:25.35
IV.MF5.EHN. ML:1.1 0.00006859322500000001 2.1504 AML other m 2021-12-30T16:14:24.99
IV.GUMA.HHE. ML:1.3 0.00011422391000000002 0.3584 AML other m 2021-12-30T16:14:24.76
IV.GUMA.HHN. ML:1.2 0.00008730057 0.2816 AML other m 2021-12-30T16:14:25.11
IV.CSP1.EHE. ML:1.1 0.00005842289999999999 0.3584 AML other m 2021-12-30T16:14:25.09
IV.CSP1.EHN. ML:1.2 0.000086778715 0.4352 AML other m 2021-12-30T16:14:24.91
IV.FDMO.HHE. ML:0.6 0.000018035291 0.1536 AML other m 2021-12-30T16:14:25.27
IV.FDMO.HHN. ML:0.6 0.0000210227947 0.1024 AML other m 2021-12-30T16:14:25.58
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