Earthquake with magnitude of ML 2.1 on date 09-12-2020 and time 05:16:51 (Italy) in region 6 km W Monte Cavallo (MC)

A magnitude ML 2.1 earthquake occured in region: 6 km W Monte Cavallo (MC), on

  • 09-12-2020 04:16:51 (UTC)
  • 09-12-2020 05:16:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.992, 12.924 at 13 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 9 1070 1215
Sellano PG 11 1079 2294
Pieve Torina MC 12 1458 3752
Muccia MC 14 915 4667
Fiordimonte MC 15 202 4869
Visso MC 15 1107 5976
Pievebovigliana MC 15 866 6842
Preci PG 16 724 7566
Valtopina PG 16 1398 8964
Nocera Umbra PG 17 5839 14803
Sefro MC 17 422 15225
Ussita MC 18 444 15669
Foligno PG 18 57155 72824
Cerreto di Spoleto PG 19 1075 73899
Trevi PG 19 8469 82368
Fiastra MC 20 559 82927
Camerino MC 20 6974 89901

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
53 Km NE of Terni (111501 inhabitants)
74 Km NW of Teramo (54892 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
95 Km S of Fano (60888 inhabitants)
100 Km SE of Arezzo (99543 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
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
Bulletin
Rev1000
ML 2.1 2020-12-09
04:16:51
42.9917 12.924 13 2021-02-26
14:56:19
Bollettino Sismico Italiano INGV 87261361
Reviewed
Rev100
ML 2.1 2020-12-09
04:16:51
42.9902 12.9293 13 2020-12-09
04:26:44
Sala Sismica INGV-Roma 85306371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-09 04:16:51 ± 0.05
Latitude 42.9917 ± 0.0027
Longitude 12.9240 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87261361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 293
Semi-minor axis of confidence ellipse (meter) 148
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 323
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 28
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 52
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) 0.01889
Epicentral distance of station farthest from the epicenter (degree) 0.76982
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 32
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 44
Type of magnitude ML
Reference to an origin 87261361
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-18 01:13:37

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 85306371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-09 04:26:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PE3.EHZ. 2020-12-09T04:17:06.41 0.6 undecidable manual P 336 0.7698 92 0.71 36
IV.LNSS.HHZ. 2020-12-09T04:17:05.52 0.6 undecidable manual S 168 0.3975 94 0.14 45
IV.EL6.EHZ. 2020-12-09T04:17:04.56 0.6 undecidable manual S 21 0.3615 94 0.26 45
IV.GUMA.HHZ. 2020-12-09T04:17:03.36 0.6 undecidable manual S 77 0.3085 96 0.62 41
IV.MOMA.HHZ. 2020-12-09T04:17:03.47 0.6 undecidable manual S 234 0.3202 95 0.39 44
IV.FOSV.EHZ. 2020-12-09T04:17:03.35 0.6 undecidable manual S 339 0.3256 95 0.11 47
IV.MPAG.EHZ. 2020-12-09T04:17:03.66 0.3 undecidable manual P 349 0.6484 92 0.03 67
IV.GAVE.EHZ. 2020-12-09T04:17:02.56 0.6 undecidable manual S 184 0.3004 96 0.07 47
IV.MMO1.EHZ. 2020-12-09T04:17:02.70 0.6 undecidable manual S 107 0.3085 96 -0.05 48
IV.ARVD.HHZ. 2020-12-09T04:17:01.11 0.1 undecidable manual P 1 0.5063 93 -0.09 90
IV.MNTT.EHZ. 2020-12-09T04:17:01.82 0.3 undecidable manual P 82 0.4955 93 0.8 55
IV.FRON.EHZ. 2020-12-09T04:17:01.77 0.3 undecidable manual P 345 0.545 93 -0.09 67
IV.SNTG.HNZ. 2020-12-09T04:17:01.40 0.6 undecidable manual S 3 0.2635 97 -0.01 48
IV.PF6.EHZ. 2020-12-09T04:17:00.66 0.6 undecidable manual S 53 0.2455 98 -0.23 46
IV.CESX.HHZ. 2020-12-09T04:17:00.19 0.3 undecidable manual P 213 0.456 93 -0.15 67
IV.SMA1.EHZ. 2020-12-09T04:17:00.49 0.3 undecidable manual P 140 0.4703 93 -0.1 68
IV.MC2.EHZ. 2020-12-09T04:17:00.04 0.3 undecidable manual S 112 0.2095 101 0.2 70
IV.CSP1.EHZ. 2020-12-09T04:17:00.43 0.3 undecidable manual S 64 0.2284 100 0.05 72
IV.SSFR.HHZ. 2020-12-09T04:17:00.21 0.3 undecidable manual P 347 0.456 93 -0.13 67
IV.ASSB.HHZ. 2020-12-09T04:16:59.55 0.6 undecidable manual S 285 0.2005 102 -0.02 48
IV.LNSS.HHZ. 2020-12-09T04:16:59.10 0.1 undecidable manual P 168 0.3975 94 -0.25 89
IV.NRCA.HNZ. 2020-12-09T04:16:59.60 0.6 undecidable manual S 139 0.2104 101 -0.27 46
IV.MURB.HHZ. 2020-12-09T04:16:59.47 0.3 undecidable manual P 313 0.3975 94 0.12 69
IV.SAP2.EHZ. 2020-12-09T04:16:59.88 0.3 undecidable manual P 73 0.3624 94 1.13 48
IV.FIU1.HNN. 2020-12-09T04:16:59.44 0.6 undecidable manual S 2 0.197 103 -0.03 48
IV.ARRO.EHZ. 2020-12-09T04:16:59.60 0.3 undecidable manual P 196 0.4281 93 -0.27 66
IV.SEF1.HNZ. 2020-12-09T04:16:58.21 0.3 undecidable manual S 6 0.1556 110 -0.09 72
IT.FOPC.HGZ. 2020-12-09T04:16:58.91 0.3 undecidable manual S 262 0.1628 108 0.41 68
IV.EL6.EHZ. 2020-12-09T04:16:58.65 0.1 undecidable manual P 21 0.3615 94 -0.08 93
IV.GUMA.HHZ. 2020-12-09T04:16:58.00 0.1 undecidable manual P 77 0.3085 96 0.17 92
IV.MOMA.HHZ. 2020-12-09T04:16:58.04 0.3 undecidable manual P 234 0.3202 95 0.02 71
IV.FDMO.HHZ. 2020-12-09T04:16:57.26 0.3 undecidable manual S 69 0.1277 118 -0.27 71
IV.MMO1.EHZ. 2020-12-09T04:16:57.66 0.1 undecidable manual P 107 0.3085 96 -0.17 93
IV.FOSV.EHZ. 2020-12-09T04:16:57.98 0.1 undecidable manual P 339 0.3256 95 -0.13 92
IV.GAVE.EHZ. 2020-12-09T04:16:57.55 0.1 undecidable manual P 184 0.3004 96 -0.13 93
IV.CSP1.EHZ. 2020-12-09T04:16:56.40 0.1 undecidable manual P 64 0.2284 100 -0.06 96
IV.SNTG.HNZ. 2020-12-09T04:16:56.84 0.1 undecidable manual P 3 0.2635 97 -0.22 92
IV.PF6.EHZ. 2020-12-09T04:16:56.53 0.3 undecidable manual P 53 0.2455 98 -0.23 69
IV.NRCA.HNZ. 2020-12-09T04:16:56.00 0.1 undecidable manual P 139 0.2104 101 -0.17 94
IV.MDAR.HNN. 2020-12-09T04:16:56.82 0.3 undecidable manual P 38 0.2563 98 -0.12 71
IV.FEMA.HNZ. 2020-12-09T04:16:56.74 0.3 undecidable manual S 108 0.0962 129 -0.03 74
IV.MC2.EHZ. 2020-12-09T04:16:56.11 0.1 undecidable manual P 112 0.2095 101 -0.04 97
IV.FIU1.HNN. 2020-12-09T04:16:55.84 0.1 undecidable manual P 2 0.197 103 -0.1 95
IV.CESI.HHZ. 2020-12-09T04:16:55.48 0.3 undecidable manual S 313 0.0189 169 -0.09 75
IV.ASSB.HHZ. 2020-12-09T04:16:55.95 0.1 undecidable manual P 285 0.2005 102 -0.05 96
IT.MTCL.HGZ. 2020-12-09T04:16:55.78 0.1 undecidable manual S 88 0.0549 149 -0.18 98
IV.SEF1.HNZ. 2020-12-09T04:16:55.18 0.1 undecidable manual P 6 0.1556 110 -0.09 97
IT.FOPC.HGZ. 2020-12-09T04:16:55.53 0.1 undecidable manual P 262 0.1628 108 0.15 96
IV.FEMA.HNZ. 2020-12-09T04:16:54.45 0.1 undecidable manual P 108 0.0962 129 0.07 97
IV.FDMO.HHZ. 2020-12-09T04:16:54.71 0.3 undecidable manual P 69 0.1277 118 -0.11 73
IV.CESI.HHZ. 2020-12-09T04:16:53.77 0.1 undecidable manual P 313 0.0189 169 0.08 99
IT.MTCL.HGZ. 2020-12-09T04:16:53.89 0.1 undecidable manual P 88 0.0549 149 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HNE. ML:1.9 0.00113 0.52 AML other m 2020-12-09T04:16:55.51
IV.CESI.HHE. ML:1.9 0.001059 0.62 AML other m 2020-12-09T04:16:55.52
IV.CESI.HHN. ML:2 0.001515 0.28 AML other m 2020-12-09T04:16:55.67
IV.CESI.HNN. ML:2 0.001475 0.92 AML other m 2020-12-09T04:16:56.07
IV.FEMA.HNN. ML:2.2 0.001685 1.5 AML other m 2020-12-09T04:16:57.22
IV.FDMO.HHN. ML:2.4 0.002005 0.2 AML other m 2020-12-09T04:16:57.48
IV.FDMO.HHE. ML:2.3 0.001765 0.54 AML other m 2020-12-09T04:16:57.67
IV.FEMA.HNE. ML:2.3 0.00207 1 AML other m 2020-12-09T04:16:57.81
IV.NRCA.HHN. ML:2.8 0.003345 0.12 AML other m 2020-12-09T04:16:59.77
IV.NRCA.HNN. ML:2.7 0.003285 0.12 AML other m 2020-12-09T04:16:59.77
IV.ASSB.HHN. ML:2.4 0.00142 0.08 AML other m 2020-12-09T04:16:59.87
IV.NRCA.HHE. ML:2.7 0.002735 0.74 AML other m 2020-12-09T04:17:00.40
IV.NRCA.HNE. ML:2.6 0.002535 0.74 AML other m 2020-12-09T04:17:00.40
IV.ASSB.HHE. ML:2.2 0.000918 1.56 AML other m 2020-12-09T04:17:00.09
IV.CSP1.EHN. ML:2.4 0.00133 0.52 AML other m 2020-12-09T04:17:00.87
IV.CSP1.EHE. ML:2.3 0.00117 0.62 AML other m 2020-12-09T04:17:00.84
IV.SNTG.HHE. ML:1.7 0.000235 0.76 AML other m 2020-12-09T04:17:01.98
IV.GAVE.EHE. ML:2.1 0.00053 1.42 AML other m 2020-12-09T04:17:02.28
IV.GAVE.EHN. ML:2.1 0.0004815 1.4 AML other m 2020-12-09T04:17:03.14
IV.SNTG.HHN. ML:1.7 0.0002205 0.62 AML other m 2020-12-09T04:17:03.88
IV.GUMA.HHE. ML:2.1 0.0005815 0.32 AML other m 2020-12-09T04:17:03.70
IV.MOMA.HNN. ML:2 0.00037 0.6 AML other m 2020-12-09T04:17:03.83
IV.MOMA.HHN. ML:2 0.000349 0.6 AML other m 2020-12-09T04:17:03.53
IV.MOMA.HHE. ML:2 0.000361 0.18 AML other m 2020-12-09T04:17:04.33
IV.MOMA.HNE. ML:2 0.000351 0.34 AML other m 2020-12-09T04:17:04.59
IV.EL6.EHN. ML:2.1 0.0003955 0.9 AML other m 2020-12-09T04:17:05.79
IV.EL6.EHE. ML:2.1 0.000379 1.44 AML other m 2020-12-09T04:17:06.24
IV.LNSS.HHN. ML:2.1 0.0003885 0.52 AML other m 2020-12-09T04:17:06.63
IV.FOSV.EHN. ML:1.6 0.0001635 1.2 AML other m 2020-12-09T04:17:06.18
IV.LNSS.HHE. ML:2 0.000294 1.12 AML other m 2020-12-09T04:17:06.93
IV.ARRO.EHN. ML:1.6 0.00010565 0.2 AML other m 2020-12-09T04:17:07.51
IV.GUMA.HHN. ML:2 0.0003855 0.38 AML other m 2020-12-09T04:17:07.32
IV.GUMA.HNE. ML:2.1 0.000484 0.52 AML other m 2020-12-09T04:17:07.25
IV.GUMA.HNN. ML:2.3 0.000768 0.7 AML other m 2020-12-09T04:17:07.19
IV.MURB.HHN. ML:2.2 0.000426 0.2 AML other m 2020-12-09T04:17:07.63
IV.ARRO.EHE. ML:1.8 0.000177 0.24 AML other m 2020-12-09T04:17:07.68
IV.MURB.HHE. ML:2.2 0.0004705 0.2 AML other m 2020-12-09T04:17:07.76
IV.SSFR.HHE. ML:2.1 0.0003135 1.34 AML other m 2020-12-09T04:17:08.13
IV.SSFR.HNE. ML:2.2 0.0004295 0.6 AML other m 2020-12-09T04:17:08.03
IV.FOSV.EHE. ML:1.5 0.000128 0.68 AML other m 2020-12-09T04:17:08.47
IV.SSFR.HNN. ML:2.2 0.0003605 1.26 AML other m 2020-12-09T04:17:09.25
IV.SSFR.HHN. ML:2 0.0002775 1.26 AML other m 2020-12-09T04:17:09.25
IV.CESX.HHE. ML:1.8 0.0001815 0.4 AML other m 2020-12-09T04:17:13.15
IV.CESX.HHN. ML:1.9 0.000217 0.36 AML other m 2020-12-09T04:17:13.35
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download