Earthquake with magnitude of ML 2.1 on date 07-12-2020 and time 07:35:20 (UTC) in region 2 km W Visso (MC)

A magnitude ML 2.1 earthquake occured in region: 2 km W Visso (MC), on

  • 07-12-2020 07:35:20 (UTC)
  • 07-12-2020 08:35:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.92, 13.06 at 10 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
Visso MC 2 1107 1107
Preci PG 6 724 1831
Ussita MC 6 444 2275
Castelsantangelo sul Nera MC 8 281 2556
Monte Cavallo MC 9 145 2701
Sellano PG 12 1079 3780
Fiordimonte MC 13 202 3982
Pieve Torina MC 13 1458 5440
Fiastra MC 15 559 5999
Acquacanina MC 15 121 6120
Norcia PG 15 4957 11077
Bolognola MC 15 142 11219
Pievebovigliana MC 15 866 12085
Cerreto di Spoleto PG 17 1075 13160
Muccia MC 18 915 14075
Serravalle di Chienti MC 19 1070 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
53 Km NE of Terni (111501 inhabitants)
59 Km E of Perugia (166134 inhabitants)
60 Km NW of Teramo (54892 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
97 Km NE of Viterbo (67173 inhabitants)
100 Km W of Montesilvano (53738 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985 *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire *

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.1 2020-12-07
07:35:20
42.93 13.07 10 2021-02-26
14:56:14
Bollettino Sismico Italiano INGV 86217011
Reviewed
Rev100
ML 2.2 2020-12-07
07:35:20
42.92 13.06 10 2020-12-07
07:56:01
Sala Sismica INGV-Roma 85260731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-07 07:35:20 ± 0.04
Latitude 42.93 ± 0.00
Longitude 13.07 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86217011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 269
Semi-minor axis of confidence ellipse (meter) 208
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 264
Circular confidence region, given by single value of horizontal uncertainty (meter) 270
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 48
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) 0.03867
Epicentral distance of station farthest from the epicenter (degree) 0.57916
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 86217011
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-13 07:47:06

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 85260731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-07 07:56:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-12-07T07:35:41.16 0.3 undecidable manual S 351 0.5792 50 0.44 62
IV.CING.HNZ. 2020-12-07T07:35:37.39 0.3 undecidable manual S 12 0.4605 50 0.21 67
IV.CESX.HHZ. 2020-12-07T07:35:37.68 0.3 undecidable manual S 228 0.4721 50 0.13 68
IV.MNTT.EHZ. 2020-12-07T07:35:36.21 0.6 undecidable manual S 70 0.411 50 0.48 43
IV.FOSV.HNE. 2020-12-07T07:35:36.55 0.6 undecidable manual S 329 0.4308 50 0.24 45
IV.ARRO.EHZ. 2020-12-07T07:35:36.09 0.6 undecidable manual S 213 0.4101 50 0.4 43
IV.EL6.EHZ. 2020-12-07T07:35:35.58 0.3 undecidable manual S 4 0.4047 50 0.04 70
IV.MOMA.HNZ. 2020-12-07T07:35:35.33 0.6 undecidable manual S 252 0.3822 50 0.46 43
IV.LNSS.HHZ. 2020-12-07T07:35:33.12 0.3 undecidable manual S 183 0.3229 50 0.01 72
IV.T1299.EHE. 2020-12-07T07:35:33.53 0.3 undecidable manual S 151 0.3318 50 0.16 70
IV.SMA1.EHZ. 2020-12-07T07:35:33.84 0.3 undecidable manual S 146 0.3552 50 -0.23 68
IV.ARVD.HHZ. 2020-12-07T07:35:32.12 0.3 undecidable manual P 351 0.5792 50 -0.21 66
IV.MTRA.EHZ. 2020-12-07T07:35:32.00 0.3 undecidable manual S 125 0.2959 50 -0.31 68
IV.ASSB.HHZ. 2020-12-07T07:35:32.73 0.3 undecidable manual S 292 0.3193 50 -0.28 68
IV.SAP2.EHZ. 2020-12-07T07:35:32.73 0.6 undecidable manual S 55 0.2986 50 0.34 45
IV.MF5.EHZ. 2020-12-07T07:35:32.64 0.6 undecidable manual S 78 0.295 50 0.34 45
IV.CESX.HHZ. 2020-12-07T07:35:30.47 0.3 undecidable manual P 228 0.4721 50 -0.02 70
IV.GUMA.HHZ. 2020-12-07T07:35:30.73 0.3 undecidable manual S 55 0.241 50 0.05 73
IV.PF6.EHZ. 2020-12-07T07:35:30.06 0.6 undecidable manual S 24 0.2329 50 -0.38 45
IV.CING.HNZ. 2020-12-07T07:35:30.16 0.6 undecidable manual P 12 0.4605 50 -0.12 46
IV.FOSV.HNE. 2020-12-07T07:35:29.60 0.3 undecidable manual P 329 0.4308 50 -0.18 68
IV.EL6.EHZ. 2020-12-07T07:35:29.02 0.3 undecidable manual P 4 0.4047 50 -0.32 66
IV.MNTT.EHZ. 2020-12-07T07:35:29.90 0.3 undecidable manual P 70 0.411 50 0.45 64
IV.T1299.EHE. 2020-12-07T07:35:28.13 0.3 undecidable manual P 151 0.3318 50 0.05 71
IV.SMA1.EHZ. 2020-12-07T07:35:28.27 0.3 undecidable manual P 146 0.3552 50 -0.22 69
IV.ARRO.EHZ. 2020-12-07T07:35:28.99 0.6 undecidable manual P 213 0.4101 50 -0.43 43
IV.MOMA.HNZ. 2020-12-07T07:35:28.92 0.3 undecidable manual P 252 0.3822 50 -0.03 71
IV.CSP1.EHZ. 2020-12-07T07:35:28.81 0.3 undecidable manual S 31 0.1952 115 -0.34 69
IV.SAP2.EHZ. 2020-12-07T07:35:27.58 0.3 undecidable manual P 55 0.2986 50 0.06 72
IV.MF5.EHZ. 2020-12-07T07:35:27.65 0.1 undecidable manual P 78 0.295 50 0.19 93
IV.LNSS.HHZ. 2020-12-07T07:35:27.73 0.1 undecidable manual P 183 0.3229 50 -0.2 92
IV.CESI.HHZ. 2020-12-07T07:35:27.43 0.3 undecidable manual S 304 0.1421 123 0.09 73
IV.MTRA.EHZ. 2020-12-07T07:35:27.10 0.3 undecidable manual P 125 0.2959 50 -0.37 67
IV.ASSB.HHZ. 2020-12-07T07:35:27.72 0.3 undecidable manual P 292 0.3193 50 -0.15 70
IV.FDMO.HHZ. 2020-12-07T07:35:26.17 0.3 undecidable manual S 8 0.1124 129 -0.25 71
IV.GUMA.HHZ. 2020-12-07T07:35:26.50 0.1 undecidable manual P 55 0.241 50 -0.03 97
IV.PF6.EHZ. 2020-12-07T07:35:26.02 0.3 undecidable manual P 24 0.2329 50 -0.37 68
IV.NRCA.HNZ. 2020-12-07T07:35:25.92 0.3 undecidable manual S 158 0.098 133 -0.09 74
IV.CSP1.EHZ. 2020-12-07T07:35:25.44 0.1 undecidable manual P 31 0.1952 115 -0.21 94
IT.MTCL.HGZ. 2020-12-07T07:35:25.44 0.3 undecidable manual S 325 0.0836 137 -0.17 73
IV.MC2.EHZ. 2020-12-07T07:35:25.96 0.3 undecidable manual S 99 0.0917 135 0.14 73
IV.CESI.HHZ. 2020-12-07T07:35:24.73 0.1 undecidable manual P 304 0.1421 123 0.13 97
IV.FEMA.HNZ. 2020-12-07T07:35:24.87 0.3 undecidable manual S 343 0.0387 157 0.22 73
IV.FDMO.HHZ. 2020-12-07T07:35:24.06 0.1 undecidable manual P 8 0.1124 129 -0.01 100
IT.MTCL.HGZ. 2020-12-07T07:35:23.69 0.1 negative manual P 325 0.0836 137 0.09 99
IV.MC2.EHZ. 2020-12-07T07:35:23.89 0.1 undecidable manual P 99 0.0917 135 0.17 97
IV.NRCA.HNZ. 2020-12-07T07:35:23.92 0.1 undecidable manual P 158 0.098 133 0.09 99
IV.FEMA.HNZ. 2020-12-07T07:35:23.30 0.1 negative manual P 343 0.0387 157 0.26 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FEMA.HNE. ML:2.5 0.0056588925 0.192 AML other m 2020-12-07T07:35:24.95
IV.FEMA.HNN. ML:2.2 0.002769796 0.1472 AML other m 2020-12-07T07:35:25.06
IV.NRCA.HHN. ML:2.3 0.002350743 0.064 AML other m 2020-12-07T07:35:26.03
IV.NRCA.HNN. ML:2.2 0.002058378 0.0704 AML other m 2020-12-07T07:35:26.04
IV.NRCA.HHE. ML:2.6 0.0045755745 0.1216 AML other m 2020-12-07T07:35:26.11
IV.NRCA.HNE. ML:2.6 0.004358963 0.1152 AML other m 2020-12-07T07:35:26.11
IV.FDMO.HHE. ML:2.3 0.0024 0.14 AML other m 2020-12-07T07:35:26.40
IV.FDMO.HHN. ML:2.1 0.00144 0.1 AML other m 2020-12-07T07:35:26.72
IV.CESI.HHN. ML:2.4 0.002465 0.2 AML other m 2020-12-07T07:35:27.73
IV.CESI.HNN. ML:2.4 0.002486863 0.2048 AML other m 2020-12-07T07:35:27.73
IV.CESI.HHE. ML:2.1 0.001235 0.22 AML other m 2020-12-07T07:35:27.85
IV.CESI.HNE. ML:2 0.0009625375 0.2304 AML other m 2020-12-07T07:35:27.86
IV.CSP1.EHN. ML:2.6 0.002856995 0.2432 AML other m 2020-12-07T07:35:29.12
IV.CSP1.EHE. ML:2.5 0.0021424065 0.256 AML other m 2020-12-07T07:35:29.50
IV.GUMA.HNN. ML:2.3 0.00115583435 0.1216 AML other m 2020-12-07T07:35:30.96
IV.GUMA.HNE. ML:2.4 0.0013241065 1.6928 AML other m 2020-12-07T07:35:31.96
IV.GUMA.HHN. ML:2.5 0.0016473755 0.3008 AML other m 2020-12-07T07:35:30.98
IV.GUMA.HHE. ML:2.3 0.00120952665 0.2176 AML other m 2020-12-07T07:35:31.59
IV.MTRA.HNE. ML:1.8 0.0002851999 0.1856 AML other m 2020-12-07T07:35:32.65
IV.MTRA.EHE. ML:1.8 0.00028522075 0.1984 AML other m 2020-12-07T07:35:32.65
IV.MTRA.EHN. ML:1.8 0.0003095 0.24 AML other m 2020-12-07T07:35:32.65
IV.MTRA.HNN. ML:1.9 0.00037464765 0.2496 AML other m 2020-12-07T07:35:32.53
IV.ASSB.HHE. ML:1.8 0.000227 0.16 AML other m 2020-12-07T07:35:33.16
IV.ASSB.HHN. ML:1.9 0.000304 0.16 AML other m 2020-12-07T07:35:33.09
IV.MF5.EHE. ML:2.2 0.0006555 0.16 AML other m 2020-12-07T07:35:33.32
IV.LNSS.HHE. ML:2 0.0003738217 0.0768 AML other m 2020-12-07T07:35:33.58
IV.LNSS.HNE. ML:2 0.0003533994 0.1408 AML other m 2020-12-07T07:35:33.59
IV.MF5.EHN. ML:2 0.0004282994 0.32 AML other m 2020-12-07T07:35:33.93
IV.LNSS.HHN. ML:2 0.00042024415 0.1792 AML other m 2020-12-07T07:35:34.11
IV.LNSS.HNN. ML:2 0.0004161146 0.1984 AML other m 2020-12-07T07:35:34.12
IV.SAP2.EHE. ML:2.1 0.00051518285 0.1344 AML other m 2020-12-07T07:35:34.19
IV.SAP2.EHN. ML:2.7 0.0023417625 0.224 AML other m 2020-12-07T07:35:34.32
IV.SMA1.EHE. ML:1.7 0.00016674435 0.096 AML other m 2020-12-07T07:35:34.82
IV.EL6.EHN. ML:2.3 0.000598 0.26 AML other m 2020-12-07T07:35:36.36
IV.EL6.EHE. ML:2.1 0.00035238895 0.16 AML other m 2020-12-07T07:35:37.14
IV.MNTT.EHE. ML:0 0.0005635 0.72 AML other m 2020-12-07T07:35:38.75
IV.SMA1.EHN. ML:1.7 0.000166 1.44 AML other m 2020-12-07T07:35:37.22
IV.CESX.HHN. ML:0 0.0001685 0.78 AML other m 2020-12-07T07:35:39.11
IV.MNTT.EHN. ML:0 0.00044542505 0.1792 AML other m 2020-12-07T07:35:40.83
IV.CESX.HHE. ML:1.6 0.000101955935 0.4224 AML other m 2020-12-07T07:35:40.79
IV.ARVD.HHN. ML:1.3 3.900849E-5 0.1216 AML other m 2020-12-07T07:35:41.75
IV.ARVD.HHE. ML:1.4 4.613626E-5 0.1152 AML other m 2020-12-07T07:35:43.12
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol 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 full SEED format Download