Earthquake with magnitude of ML 0.8 on date 31-12-2021 and time 13:29:22 (Italy) in region 2 km E Monte Cavallo (MC)

A magnitude ML 0.8 earthquake occured in region: 2 km E Monte Cavallo (MC), on

  • 31-12-2021 12:29:22 (UTC)
  • 31-12-2021 13:29:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9940, 13.0270 at 10 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.

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 2 145 145
Pieve Torina MC 6 1458 1603
Fiordimonte MC 7 202 1805
Visso MC 9 1107 2912
Pievebovigliana MC 9 866 3778
Muccia MC 10 915 4693
Ussita MC 11 444 5137
Serravalle di Chienti MC 11 1070 6207
Fiastra MC 12 559 6766
Acquacanina MC 13 121 6887
Preci PG 13 724 7611
Sellano PG 14 1079 8690
Castelsantangelo sul Nera MC 15 281 8971
Camerino MC 16 6974 15945
Bolognola MC 16 142 16087
Sefro MC 18 422 16509

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Foligno (57155 inhabitants)
53 Km E of Perugia (166134 inhabitants)
57 Km NE of Terni (111501 inhabitants)
67 Km NW of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
80 Km SW of Ancona (100861 inhabitants)
95 Km S of Fano (60888 inhabitants)
99 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 0.8 2021-12-31
12:29:22
42.9942 13.0272 10 2021-12-31
13:51:06
Sala Sismica INGV-Roma 99193621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-31 12:29:22 ± 0.11
Latitude 42.9942 ± 0.0054
Longitude 13.0272 ± 0.0049
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 99193621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 474
Semi-minor axis of confidence ellipse (meter) 379
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 180
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.02068
Epicentral distance of station farthest from the epicenter (degree) 0.34084
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 99193621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-31 13:51:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2021-12-31T12:29:30.01 0.1 undecidable manual P 304 37.8288 50 0.29 91
IV.CSP1.EHZ. 2021-12-31T12:29:29.37 0.6 undecidable manual S 53 18.0708 118 0 50
IV.MC2.EHZ. 2021-12-31T12:29:28.71 0.6 undecidable manual S 125 16.0728 121 -0.05 49
IV.MML1.EHZ. 2021-12-31T12:29:28.13 0.6 undecidable manual S 341 13.9749 124 -0.04 50
IV.FEMA.HNZ. 2021-12-31T12:29:26.19 0.6 undecidable manual S 153 3.996 157 0.3 48
IV.FDMO.HHZ. 2021-12-31T12:29:26.77 0.6 undecidable manual S 46 6.7932 145 0.41 47
IV.CESI.HHZ. 2021-12-31T12:29:26.91 0.6 undecidable manual S 277 9.9789 134 -0.19 49
IV.CSP1.EHZ. 2021-12-31T12:29:26.12 0.1 undecidable manual P 53 18.0708 118 -0.25 95
IV.MML1.EHZ. 2021-12-31T12:29:25.54 0.6 undecidable manual P 341 13.9749 124 -0.14 49
IV.MC2.EHZ. 2021-12-31T12:29:25.76 0.6 undecidable manual P 125 16.0728 121 -0.26 47
IT.MTCL.HGZ. 2021-12-31T12:29:25.82 0.6 undecidable manual S 269 2.2977 167 0.12 50
IV.CESI.HHZ. 2021-12-31T12:29:24.94 0.1 negative manual P 277 9.9789 134 -0.12 99
IV.FEMA.HNZ. 2021-12-31T12:29:24.47 0.1 undecidable manual P 153 3.996 157 0.1 100
IV.FDMO.HHZ. 2021-12-31T12:29:24.71 0.3 positive manual P 46 6.7932 145 0.08 75
IT.MTCL.HGZ. 2021-12-31T12:29:24.13 0.1 undecidable manual P 269 2.2977 167 -0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.9 0.00012054999999999999 0.18 AML other m 2021-12-31T12:29:26.85
IV.FDMO.HHN. ML:0.8 0.000093 0.2 AML other m 2021-12-31T12:29:26.98
IV.CESI.HHN. ML:0.9 0.00010680000000000001 0.3 AML other m 2021-12-31T12:29:27.29
IV.CESI.HHE. ML:0.7 0.00006855 0.14 AML other m 2021-12-31T12:29:27.34
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