Earthquake with magnitude of ML 1.0 on date 01-12-2021 and time 01:43:16 (Italy) in region 6 km W Monte Cavallo (MC)

A magnitude ML 1.0 earthquake occured in region: 6 km W Monte Cavallo (MC), on

  • 01-12-2021 00:43:16 (UTC)
  • 01-12-2021 01:43:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.013, 12.937 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.

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 6 145 145
Serravalle di Chienti MC 7 1070 1215
Pieve Torina MC 10 1458 2673
Muccia MC 12 915 3588
Fiordimonte MC 13 202 3790
Pievebovigliana MC 13 866 4656
Sellano PG 14 1079 5735
Sefro MC 15 422 6157
Visso MC 15 1107 7264
Valtopina PG 16 1398 8662
Nocera Umbra PG 16 5839 14501
Preci PG 17 724 15225
Camerino MC 17 6974 22199
Ussita MC 18 444 22643
Fiastra MC 18 559 23202
Pioraco MC 19 1134 24336
Acquacanina MC 20 121 24457
Fiuminata MC 20 1402 25859
Foligno PG 20 57155 83014

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Foligno (57155 inhabitants)
46 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
74 Km NW of Teramo (54892 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 inhabitants)
95 Km NE of Viterbo (67173 inhabitants)
99 Km SE of Arezzo (99543 inhabitants)
100 Km S of Pesaro (94582 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 1.0 2021-12-01
00:43:16
43.0127 12.9367 12 2021-12-01
00:47:53
Sala Sismica INGV-Roma 97991681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-01 00:43:16 ± 0.06
Latitude 43.0127 ± 0.0018
Longitude 12.9367 ± 0.0025
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 97991681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 227
Semi-minor axis of confidence ellipse (meter) 95
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 226
Circular confidence region, given by single value of horizontal uncertainty (meter) 230
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.07
Epicentral distance of station closest to the epicenter (degree) 0.02428
Epicentral distance of station farthest from the epicenter (degree) 0.75453
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 97991681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-01 00:47:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PE3.EHZ. 2021-12-01T00:43:30.76 1.0 positive manual P 335 0.7545 91 -0.05 22
IV.NRCA.HHZ. 2021-12-01T00:43:25.43 0.3 undecidable manual S 144 0.2212 96 -0.09 73
IV.ASSB.HHZ. 2021-12-01T00:43:24.97 0.6 undecidable manual S 279 0.205 97 -0.08 49
IV.MML1.EHZ. 2021-12-01T00:43:22.08 0.6 undecidable manual S 14 0.1043 121 -0.1 50
IV.FDMO.HHZ. 2021-12-01T00:43:22.31 0.6 undecidable manual S 78 0.1124 118 -0.09 50
IV.ASSB.HHZ. 2021-12-01T00:43:21.40 0.3 positive manual P 279 0.205 97 -0.03 74
IV.NRCA.HHZ. 2021-12-01T00:43:21.76 0.3 undecidable manual P 144 0.2212 96 0.06 73
IV.CESI.HHZ. 2021-12-01T00:43:20.79 0.6 undecidable manual S 252 0.0243 164 0.04 51
IV.FDMO.HHZ. 2021-12-01T00:43:19.94 0.1 undecidable manual P 78 0.1124 118 0.03 100
IV.MML1.EHZ. 2021-12-01T00:43:19.86 0.1 negative manual P 14 0.1043 121 0.08 99
IV.CESI.HHZ. 2021-12-01T00:43:19.07 0.6 undecidable manual P 252 0.0243 164 0.12 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.2 0.0002365 0.22 AML other m 2021-12-01T00:43:20.88
IV.CESI.HHE. ML:1.4 0.000331 0.18 AML other m 2021-12-01T00:43:20.89
IV.FDMO.HHE. ML:1 9.205E-5 0.18 AML other m 2021-12-01T00:43:22.45
IV.MML1.EHN. ML:0.8 6.685E-5 0.84 AML other m 2021-12-01T00:43:22.87
IV.MML1.EHE. ML:0.9 8.705E-5 0.36 AML other m 2021-12-01T00:43:22.30
IV.FDMO.HHN. ML:0.8 6.36E-5 0.12 AML other m 2021-12-01T00:43:22.72
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