Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 29-12-2021 and time 20:30:19 (UTC) in region 1 km SE Monte Cavallo (MC)

A magnitude ML 1.1 earthquake occured in region: 1 km SE Monte Cavallo (MC), on

  • 29-12-2021 20:30:19 (UTC)
  • 29-12-2021 21:30:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9830, 13.0090 at 12 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
Monte Cavallo MC 1 145 145
Pieve Torina MC 8 1458 1603
Visso MC 9 1107 2710
Fiordimonte MC 9 202 2912
Pievebovigliana MC 11 866 3778
Serravalle di Chienti MC 11 1070 4848
Ussita MC 11 444 5292
Muccia MC 12 915 6207
Preci PG 12 724 6931
Sellano PG 12 1079 8010
Fiastra MC 13 559 8569
Acquacanina MC 15 121 8690
Castelsantangelo sul Nera MC 15 281 8971
Camerino MC 18 6974 15945
Bolognola MC 18 142 16087
Sefro MC 19 422 16509
Cerreto di Spoleto PG 20 1075 17584

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
52 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
67 Km NW of Teramo (54892 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
96 Km S of Fano (60888 inhabitants)
97 Km NE of Viterbo (67173 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 2021-12-29
20:30:19		 42.9828 13.0092 12 2021-12-29
21:02:37		 Sala Sismica INGV-Roma 99126381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-29 20:30:19 ± 0.07
Latitude 42.9828 ± 0.0036
Longitude 13.0092 ± 0.0049
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 99126381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 408
Semi-minor axis of confidence ellipse (meter) 228
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 39
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35253
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 99126381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-29 21:02:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-12-29T20:30:32.23 0.3 undecidable manual S 11 39.1275 93 0.23 68
IV.MF5.EHZ. 2021-12-29T20:30:32.21 0.3 undecidable manual S 89 36.5412 93 0.91 53
IV.MNTT.EHZ. 2021-12-29T20:30:29.48 3.0 positive manual P 1.53 0
IV.SNTG.HNZ. 2021-12-29T20:30:29.70 0.3 undecidable manual S 350 30.747 94 -0.04 71
IV.ASSB.HHZ. 2021-12-29T20:30:29.35 0.3 undecidable manual S 283 29.1486 94 0.01 71
IV.MMO1.EHZ. 2021-12-29T20:30:28.53 0.3 undecidable manual S 110 27.4503 95 -0.33 68
IV.NRCA.HHZ. 2021-12-29T20:30:26.20 0.3 undecidable manual S 153 18.6702 102 -0.34 69
IV.CSP1.EHZ. 2021-12-29T20:30:26.72 0.3 undecidable manual S 53 19.9689 100 -0.17 71
IV.EL6.EHZ. 2021-12-29T20:30:26.48 0.1 undecidable manual P 11 39.1275 93 -0.06 93
IV.MF5.EHZ. 2021-12-29T20:30:26.41 0.1 undecidable manual P 89 36.5412 93 0.27 89
IV.MC2.EHZ. 2021-12-29T20:30:26.09 0.1 undecidable manual S 118 16.5723 106 0.08 96
IV.SNTG.HNZ. 2021-12-29T20:30:25.09 0.3 undecidable manual P 350 30.747 94 -0.14 69
IV.MML1.EHZ. 2021-12-29T20:30:25.51 0.3 undecidable manual S 348 14.7741 110 -0.05 72
IV.MMO1.EHZ. 2021-12-29T20:30:24.49 0.1 undecidable manual P 110 27.4503 95 -0.24 92
IV.FDMO.HHE. 2021-12-29T20:30:24.00 0.3 undecidable manual S 47 8.6802 134 -0.18 72
IV.ASSB.HHZ. 2021-12-29T20:30:24.99 0.1 undecidable manual P 283 29.1486 94 -0.01 95
IV.CESI.HHZ. 2021-12-29T20:30:24.42 0.3 undecidable manual S 286 8.88 133 0.22 72
IV.MC2.EHZ. 2021-12-29T20:30:23.03 0.3 undecidable manual P 118 16.5723 106 -0.05 73
IT.MTCL.HGN. 2021-12-29T20:30:23.09 0.1 undecidable manual S 327 1.4985 171 -0.19 96
IV.NRCA.HHZ. 2021-12-29T20:30:23.22 0.1 undecidable manual P 153 18.6702 102 -0.17 95
IV.FEMA.HNN. 2021-12-29T20:30:23.58 0.1 undecidable manual S 125 3.996 157 0.11 98
IV.FOSV.EHZ. 2021-12-29T20:30:23.73 3.0 undecidable manual P 0
IV.CSP1.EHZ. 2021-12-29T20:30:23.46 0.1 undecidable manual P 53 19.9689 100 -0.13 95
IV.MML1.EHZ. 2021-12-29T20:30:22.85 0.1 undecidable manual P 348 14.7741 110 0.03 98
IV.FDMO.HHE. 2021-12-29T20:30:22.02 0.1 undecidable manual P 47 8.6802 134 0 99
IV.CESI.HHZ. 2021-12-29T20:30:22.25 0.1 undecidable manual P 286 8.88 133 0.21 96
IT.MTCL.HGN. 2021-12-29T20:30:21.56 0.1 undecidable manual P 327 1.4985 171 0.06 100
IV.FEMA.HNN. 2021-12-29T20:30:21.79 0.1 undecidable manual P 125 3.996 157 0.18 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.2 0.00019040345 0.1152 AML other m 2021-12-29T20:30:24.67
IV.CESI.HHE. ML:1.1 0.0001565 0.18 AML other m 2021-12-29T20:30:24.68
IV.MML1.EHN. ML:0.8 0.000059999999999999995 0.14 AML other m 2021-12-29T20:30:25.84
IV.MML1.EHE. ML:0.8 0.000055983754999999994 0.1408 AML other m 2021-12-29T20:30:26.11
IV.NRCA.HHN. ML:1.2 0.0001245 0.14 AML other m 2021-12-29T20:30:26.34
IV.NRCA.HHE. ML:1.0 0.00008219999999999999 1.46 AML other m 2021-12-29T20:30:27.07
IV.ASSB.HHN. ML:1.0 0.00005046486 0.1792 AML other m 2021-12-29T20:30:30.29
IV.ASSB.HHE. ML:0.9 0.000042492092749999994 0.0768 AML other m 2021-12-29T20:30:29.71
IV.CESI.HNE. ML:1.0 0.000123903835 0.192 AML other m 2021-12-29T20:30:24.68
IV.CESI.HNN. ML:1.6 0.00047930205000000004 0.2304 AML other m 2021-12-29T20:30:24.88
IV.MML1.HNE. ML:0.9 0.00007468042 0.6144 AML other m 2021-12-29T20:30:24.00
IV.MML1.HNN. ML:1.0 0.0000832638 0.6656 AML other m 2021-12-29T20:30:24.46
IV.MC2.EHE. ML:1.0 0.00008812815499999998 1.6896 AML other m 2021-12-29T20:30:27.42
IV.MC2.EHN. ML:1.0 0.00007915431 0.2048 AML other m 2021-12-29T20:30:27.53
IV.NRCA.HNE. ML:1.1 0.000088163425 0.128 AML other m 2021-12-29T20:30:27.80
IV.NRCA.HNN. ML:1.4 0.00018612035 0.6912 AML other m 2021-12-29T20:30:26.41
IV.CSP1.EHE. ML:1.4 0.000166638125 0.32 AML other m 2021-12-29T20:30:27.32
IV.CSP1.EHN. ML:1.4 0.00015703115000000002 0.3584 AML other m 2021-12-29T20:30:28.28
IV.MMO1.EHE. ML:0.8 0.000036240324999999994 0.1664 AML other m 2021-12-29T20:30:28.91
IV.MMO1.EHN. ML:0.8 0.000031750795 0.256 AML other m 2021-12-29T20:30:28.00
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