Earthquake with magnitude of ML 1.2 on date 08-12-2021 and time 00:18:12 (Italy) in region 3 km N Monte Cavallo (MC)

A magnitude ML 1.2 earthquake occured in region: 3 km N Monte Cavallo (MC), on

  • 07-12-2021 23:18:12 (UTC)
  • 08-12-2021 00:18:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.022, 13.002 at 14 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 3 145 145
Pieve Torina MC 5 1458 1603
Serravalle di Chienti MC 7 1070 2673
Fiordimonte MC 7 202 2875
Muccia MC 8 915 3790
Pievebovigliana MC 8 866 4656
Visso MC 12 1107 5763
Fiastra MC 13 559 6322
Camerino MC 14 6974 13296
Ussita MC 14 444 13740
Acquacanina MC 14 121 13861
Sefro MC 15 422 14283
Sellano PG 16 1079 15362
Preci PG 16 724 16086
Pioraco MC 18 1134 17220
Bolognola MC 19 142 17362
Castelsantangelo sul Nera MC 19 281 17643
Fiuminata MC 20 1402 19045
Nocera Umbra PG 20 5839 24884

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
51 Km E of Perugia (166134 inhabitants)
59 Km NE of Terni (111501 inhabitants)
70 Km NW of Teramo (54892 inhabitants)
78 Km SW of Ancona (100861 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
91 Km S of Fano (60888 inhabitants)
99 Km S of Pesaro (94582 inhabitants)
99 Km NE of Viterbo (67173 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 1.2 2021-12-07
23:18:12
43.0222 13.0023 14 2021-12-07
23:24:45
Sala Sismica INGV-Roma 98259241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-07 23:18:12 ± 0.07
Latitude 43.0222 ± 0.0045
Longitude 13.0023 ± 0.0037
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98259241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 519
Semi-minor axis of confidence ellipse (meter) 34
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 31
Circular confidence region, given by single value of horizontal uncertainty (meter) 520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.06385
Epicentral distance of station farthest from the epicenter (degree) 0.31566
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 98259241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-07 23:24:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2021-12-07T23:18:23.14 0.1 undecidable manual S 117 0.2671 99 -0.28 93
IV.SNTG.HHZ. 2021-12-07T23:18:22.31 0.1 undecidable manual S 349 0.2374 101 -0.22 96
IV.ASSB.HHZ. 2021-12-07T23:18:22.91 0.1 undecidable manual S 275 0.2518 100 -0.06 99
IV.NRCA.HHZ. 2021-12-07T23:18:21.46 0.1 undecidable manual S 156 0.205 104 -0.16 97
IV.CSP1.EHZ. 2021-12-07T23:18:20.71 0.1 undecidable manual S 65 0.1637 111 0.28 96
IV.MC2.EHZ. 2021-12-07T23:18:20.98 0.1 undecidable manual S 129 0.1754 108 0.2 97
IV.EL6.EHZ. 2021-12-07T23:18:20.05 1.0 undecidable manual P 13 0.3157 97 0.22 24
IV.ATCC.EHZ. 2021-12-07T23:18:19.92 0.6 undecidable manual P 302 0.3103 97 0.17 47
IV.MMO1.EHZ. 2021-12-07T23:18:19.03 0.6 positive manual P 117 0.2671 99 0.02 50
IV.MML1.EHZ. 2021-12-07T23:18:18.47 0.1 undecidable manual S 346 0.0944 132 -0.2 100
IV.SNTG.HHZ. 2021-12-07T23:18:18.58 0.6 positive manual P 349 0.2374 101 0.08 49
IV.ASSB.HHZ. 2021-12-07T23:18:18.75 0.3 positive manual P 275 0.2518 100 0 74
IV.CESI.HHZ. 2021-12-07T23:18:18.31 0.1 undecidable manual S 256 0.0737 141 0.06 100
IV.NRCA.HHZ. 2021-12-07T23:18:17.97 1.0 undecidable manual P 156 0.205 104 -0.01 25
IV.FDMO.HHZ. 2021-12-07T23:18:17.87 0.1 undecidable manual S 77 0.0639 146 -0.22 99
IV.CSP1.EHZ. 2021-12-07T23:18:17.45 0.3 positive manual P 65 0.1637 111 0.16 74
IV.MC2.EHZ. 2021-12-07T23:18:17.59 1.0 undecidable manual P 129 0.1754 108 0.11 25
IV.CESI.HHZ. 2021-12-07T23:18:16.14 1.0 undecidable manual P 256 0.0737 141 0.11 25
IV.MML1.EHZ. 2021-12-07T23:18:16.40 0.3 negative manual P 346 0.0944 132 0.13 75
IV.FDMO.HHZ. 2021-12-07T23:18:15.95 1.0 undecidable manual P 77 0.0639 146 0.02 26
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1 0.0001271 0.2 AML other m 2021-12-07T23:18:17.99
IV.FDMO.HHN. ML:0.9 9.775E-5 0.14 AML other m 2021-12-07T23:18:18.26
IV.CESI.HHE. ML:1.4 0.0002785 0.1 AML other m 2021-12-07T23:18:18.41
IV.CESI.HHN. ML:1.6 0.000425 0.1 AML other m 2021-12-07T23:18:18.37
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