Earthquake with magnitude of ML 0.9 on date 03-12-2021 and time 23:22:25 (UTC) in region 5 km W Monte Cavallo (MC)

A magnitude ML 0.9 earthquake occured in region: 5 km W Monte Cavallo (MC), on

  • 03-12-2021 23:22:25 (UTC)
  • 04-12-2021 00:22:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.991, 12.946 at 8 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 5 145 145
Serravalle di Chienti MC 9 1070 1215
Pieve Torina MC 11 1458 2673
Sellano PG 11 1079 3752
Fiordimonte MC 13 202 3954
Muccia MC 13 915 4869
Visso MC 13 1107 5976
Pievebovigliana MC 14 866 6842
Preci PG 15 724 7566
Ussita MC 17 444 8010
Valtopina PG 17 1398 9408
Sefro MC 17 422 9830
Fiastra MC 18 559 10389
Nocera Umbra PG 19 5839 16228
Camerino MC 19 6974 23202
Cerreto di Spoleto PG 19 1075 24277
Acquacanina MC 19 121 24398
Castelsantangelo sul Nera MC 20 281 24679

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Foligno (57155 inhabitants)
47 Km E of Perugia (166134 inhabitants)
54 Km NE of Terni (111501 inhabitants)
72 Km NW of Teramo (54892 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
95 Km S of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.9 2021-12-03
23:22:25
42.9908 12.9465 8 2021-12-03
23:31:30
Sala Sismica INGV-Roma 98107141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-03 23:22:25 ± 0.09
Latitude 42.9908 ± 0.0036
Longitude 12.9465 ± 0.0061
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98107141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 489
Semi-minor axis of confidence ellipse (meter) 332
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 224
Circular confidence region, given by single value of horizontal uncertainty (meter) 490
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 15
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
Epicentral distance of station farthest from the epicenter (degree) 0.35703
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 98107141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-03 23:31:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-12-03T23:22:39.38 0.3 undecidable manual S 18 0.357 50 -0.03 70
IV.SNTG.HNN. 2021-12-03T23:22:36.42 0.1 undecidable manual S 359 0.2644 105 0.21 92
IV.EL6.EHZ. 2021-12-03T23:22:33.34 0.1 undecidable manual P 18 0.357 50 -0.26 89
IV.NRCA.HHZ. 2021-12-03T23:22:33.88 0.1 undecidable manual S 142 0.1996 110 0.05 97
IV.SNTG.HNN. 2021-12-03T23:22:31.53 0.3 undecidable manual P 359 0.2644 105 -0.23 69
IV.FERS.EHZ. 2021-12-03T23:22:31.12 3.0 undecidable manual P 0
IV.MC2.EHZ. 2021-12-03T23:22:31.55 3.0 undecidable manual P 0
IV.NRCA.HHZ. 2021-12-03T23:22:30.47 0.3 undecidable manual P 142 0.1996 110 0.08 72
IV.ASSB.HHN. 2021-12-03T23:22:30.79 0.1 undecidable manual P 284 0.2167 108 0.04 96
IV.FDMO.HHZ. 2021-12-03T23:22:30.94 0.3 undecidable manual S 66 0.1124 122 0.13 72
IV.CESI.HHZ. 2021-12-03T23:22:28.61 0.1 undecidable manual S 295 0.0333 155 -0.1 99
IT.MTCL.HGZ. 2021-12-03T23:22:28.44 0.1 undecidable manual S 86 0.0387 151 -0.36 93
IV.FDMO.HHZ. 2021-12-03T23:22:28.85 0.1 undecidable manual P 66 0.1124 122 0.21 95
IV.CESI.HHZ. 2021-12-03T23:22:27.59 0.1 undecidable manual P 295 0.0333 155 0.17 97
IT.MTCL.HGZ. 2021-12-03T23:22:27.50 0.1 undecidable manual P 86 0.0387 151 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0 0.0004465 0.12 AML other m 2021-12-03T23:22:28.67
IV.CESI.HHN. ML:0 0.0004485 0.14 AML other m 2021-12-03T23:22:28.69
IV.FDMO.HHE. ML:0.8 8.635E-5 1.72 AML other m 2021-12-03T23:22:30.94
IV.FDMO.HHN. ML:0.8 7.1E-5 0.42 AML other m 2021-12-03T23:22:31.32
IV.NRCA.HHN. ML:1 6.835E-5 1.36 AML other m 2021-12-03T23:22:34.31
IV.IMOL.HNN. ML:3.6 0.0015745 0.46 AML other m 2021-12-03T23:22:42.39
IV.IMOL.HNE. ML:3.9 0.002975 0.4 AML other m 2021-12-03T23:22:42.91
IV.NRCA.HHE. ML:1 6.62E-5 0.42 AML other m 2021-12-03T23:22:52.41
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