Earthquake with magnitude of ML 2.1 on date 21-01-2021 and time 12:16:42 (Italy) in region 1 km N Castelsantangelo sul Nera (MC)

A magnitude ML 2.1 earthquake occured in region: 1 km N Castelsantangelo sul Nera (MC), on

  • 21-01-2021 11:16:42 (UTC)
  • 21-01-2021 12:16:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.902, 13.154 at 8 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
Castelsantangelo sul Nera MC 1 281 281
Ussita MC 5 444 725
Visso MC 6 1107 1832
Preci PG 10 724 2556
Bolognola MC 12 142 2698
Norcia PG 13 4957 7655
Montemonaco AP 14 604 8259
Acquacanina MC 14 121 8380
Fiastra MC 15 559 8939
Montegallo AP 16 523 9462
Montefortino FM 16 1178 10640
Fiordimonte MC 16 202 10842
Monte Cavallo MC 16 145 10987
Pieve Torina MC 18 1458 12445
Sellano PG 19 1079 13524
Arquata del Tronto AP 19 1178 14702
Amandola FM 19 3629 18331
Pievebovigliana MC 19 866 19197
Sarnano MC 19 3264 22461

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
52 Km NW of Teramo (54892 inhabitants)
56 Km NE of Terni (111501 inhabitants)
64 Km NW of L'Aquila (69753 inhabitants)
66 Km E of Perugia (166134 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
99 Km W of Pescara (121014 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 3 days preceding this event

Earthquakes of the 3 days preceding this event *

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 90 days preceding this event

Earthquakes of the 90 days preceding this event *

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 from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

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 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 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
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 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 2021-01-21
11:16:42
42.9022 13.1543 8 2021-07-12
16:55:05
Bollettino Sismico Italiano INGV 88755971
Reviewed
Rev100
ML 2.1 2021-01-21
11:16:42
42.9028 13.1552 7 2021-01-21
11:23:17
Sala Sismica INGV-Roma 86429181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-21 11:16:42 ± 0.05
Latitude 42.9022 ± 0.0027
Longitude 13.1543 ± 0.0049
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88755971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 194
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 261
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 56
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.02698
Epicentral distance of station farthest from the epicenter (degree) 0.81299
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 0.3
Num. used stations 50
Type of magnitude ML
Reference to an origin 88755971
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-04 02:16:04

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 86429181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-21 11:23:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-01-21T11:17:04.55 0.3 undecidable manual S 345 0.6151 50 0.71 57
IV.ATCC.EHZ. 2021-01-21T11:17:00.25 0.6 undecidable manual S 307 0.4703 50 0.71 39
IV.ARRO.EHZ. 2021-01-21T11:16:58.61 0.6 undecidable manual S 222 0.4308 50 0.23 45
IV.T0110.HHZ. 2021-01-21T11:16:58.18 0.3 undecidable manual P 146 0.813 50 0 66
IV.EL6.EHE. 2021-01-21T11:16:58.37 0.6 undecidable manual S 355 0.429 50 0.06 47
IV.TERO.HHZ. 2021-01-21T11:16:58.48 0.6 undecidable manual S 130 0.4326 50 0.06 47
IV.FAGN.HHZ. 2021-01-21T11:16:57.15 0.6 undecidable manual P 153 0.7105 50 0.74 37
IV.RM33.HNE. 2021-01-21T11:16:57.76 0.6 undecidable manual S 174 0.3957 50 0.43 44
IV.CAMP.HHE. 2021-01-21T11:16:57.72 0.6 undecidable manual S 153 0.411 50 -0.07 47
IV.PIEI.HHZ. 2021-01-21T11:16:57.55 0.6 undecidable manual P 325 0.777 50 -0.01 44
IV.ASSB.HHZ. 2021-01-21T11:16:57.20 0.6 undecidable manual S 291 0.3885 50 0.07 47
IV.GAVE.EHZ. 2021-01-21T11:16:54.27 0.3 undecidable manual S 222 0.2833 104 0.6 64
IV.SMA1.EHZ. 2021-01-21T11:16:54.25 0.3 undecidable manual S 154 0.3022 103 -0.12 71
IV.LNSS.HHZ. 2021-01-21T11:16:54.98 0.3 undecidable manual S 196 0.3103 103 0.3 69
IV.ARVD.HHZ. 2021-01-21T11:16:54.69 1.0 undecidable manual P 345 0.6151 50 -0.1 22
IV.SAP2.EHZ. 2021-01-21T11:16:53.58 0.3 undecidable manual S 43 0.2644 105 0.64 63
IV.CING.HNZ. 2021-01-21T11:16:52.00 0.1 undecidable manual P 4 0.4739 50 -0.37 87
IV.MF5.EHZ. 2021-01-21T11:16:52.81 0.3 undecidable manual S 69 0.2392 106 0.79 59
IV.CESI.HHZ. 2021-01-21T11:16:51.09 0.3 undecidable manual S 299 0.2095 108 0.16 72
IV.TERO.HHZ. 2021-01-21T11:16:51.16 0.3 undecidable manual P 130 0.4326 50 -0.49 64
IV.FIU1.HNZ. 2021-01-21T11:16:51.18 1.0 undecidable manual P 330 0.3292 50 1.29 15
IV.GUMA.HHZ. 2021-01-21T11:16:51.27 0.3 undecidable manual S 39 0.2077 109 0.41 68
IV.ATCC.EHZ. 2021-01-21T11:16:51.99 0.3 undecidable manual P 307 0.4703 50 -0.32 66
IV.MNTT.EHZ. 2021-01-21T11:16:51.09 0.6 undecidable manual P 64 0.3597 50 0.67 41
IV.ARRO.EHZ. 2021-01-21T11:16:51.37 1.0 undecidable manual P 222 0.4308 50 -0.26 22
IV.MTRA.EHZ. 2021-01-21T11:16:51.99 0.3 undecidable manual S 129 0.2293 107 0.33 69
IV.EL6.EHE. 2021-01-21T11:16:51.01 0.1 undecidable manual P 355 0.429 50 -0.58 83
IV.PF6.EHN. 2021-01-21T11:16:51.66 0.6 undecidable manual S 7 0.2374 106 -0.29 47
IV.CAMP.HHE. 2021-01-21T11:16:50.80 0.1 undecidable manual P 153 0.411 50 -0.49 86
IV.ASSB.HHZ. 2021-01-21T11:16:50.50 0.3 undecidable manual P 291 0.3885 50 -0.41 66
IV.RM33.HNE. 2021-01-21T11:16:50.70 0.1 undecidable manual P 174 0.3957 50 -0.33 89
IV.CSP1.EHZ. 2021-01-21T11:16:50.28 0.3 undecidable manual S 11 0.1934 110 -0.05 74
IV.LNSS.HHZ. 2021-01-21T11:16:49.41 0.1 undecidable manual P 196 0.3103 103 -0.09 95
IV.T1299.HNN. 2021-01-21T11:16:48.82 0.1 undecidable manual P 161 0.2842 104 -0.1 96
IV.MF5.EHZ. 2021-01-21T11:16:48.24 0.1 undecidable manual P 69 0.2392 106 0.28 93
IV.MMO1.EHZ. 2021-01-21T11:16:48.00 0.6 undecidable manual S 91 0.1259 119 0.02 50
IV.GAVE.EHZ. 2021-01-21T11:16:48.90 0.1 undecidable manual P 222 0.2833 104 -0.02 97
IT.MTCL.HGZ. 2021-01-21T11:16:48.84 0.6 undecidable manual S 309 0.1457 116 0.19 48
IV.FDMO.HHZ. 2021-01-21T11:16:48.70 0.6 undecidable manual S 340 0.143 116 0.15 49
IV.SAP2.EHZ. 2021-01-21T11:16:48.56 1.0 undecidable manual P 43 0.2644 105 0.06 24
IV.SMA1.EHZ. 2021-01-21T11:16:48.96 0.1 undecidable manual P 154 0.3022 103 -0.36 90
IV.MTRA.EHZ. 2021-01-21T11:16:47.76 0.1 positive manual P 129 0.2293 107 0.01 99
IV.FEMA.HNZ. 2021-01-21T11:16:47.26 0.3 undecidable manual S 308 0.0971 126 0.23 72
IV.PF6.EHN. 2021-01-21T11:16:47.62 0.1 undecidable manual P 7 0.2374 106 -0.3 93
IV.CESI.HHZ. 2021-01-21T11:16:47.33 0.1 negative manual P 299 0.2095 108 0 99
IV.MML1.HNE. 2021-01-21T11:16:47.79 0.1 undecidable manual P 328 0.25 106 -0.4 91
IV.GUMA.HHZ. 2021-01-21T11:16:47.36 0.1 undecidable manual P 39 0.2077 109 0.06 98
IV.CSP1.EHZ. 2021-01-21T11:16:46.79 0.1 undecidable manual P 11 0.1934 110 -0.19 96
IV.NRCA.HNZ. 2021-01-21T11:16:46.67 0.6 undecidable manual S 203 0.0746 133 0.31 48
IV.FDMO.HHZ. 2021-01-21T11:16:45.77 0.1 negative manual P 340 0.143 116 -0.19 97
IV.NRCA.HNZ. 2021-01-21T11:16:45.02 0.1 negative manual P 203 0.0746 133 0.33 95
IV.FEMA.HNZ. 2021-01-21T11:16:45.18 0.1 undecidable manual P 308 0.0971 126 0.1 99
IV.MMO1.EHZ. 2021-01-21T11:16:45.59 0.1 negative manual P 91 0.1259 119 -0.04 100
IT.MTCL.HGZ. 2021-01-21T11:16:45.96 1.0 undecidable manual P 309 0.1457 116 -0.05 25
IV.MC2.EHZ. 2021-01-21T11:16:44.54 0.3 undecidable manual S 70 0.027 159 -0.76 62
IV.MC2.EHZ. 2021-01-21T11:16:43.63 0.1 positive manual P 70 0.027 159 -0.46 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.8 0.011075 0.18 AML other m 2021-01-21T11:16:46.90
IV.NRCA.HNE. ML:2.8 0.010725 0.16 AML other m 2021-01-21T11:16:46.90
IV.NRCA.HNN. ML:2.5 0.005125 0.18 AML other m 2021-01-21T11:16:46.86
IV.NRCA.HHN. ML:2.5 0.005555 0.18 AML other m 2021-01-21T11:16:46.86
IV.FEMA.HNN. ML:2.2 0.00218 0.94 AML other m 2021-01-21T11:16:47.99
IV.FEMA.HNE. ML:2.3 0.00251 0.16 AML other m 2021-01-21T11:16:47.74
IV.FDMO.HHN. ML:2.2 0.001465 0.18 AML other m 2021-01-21T11:16:49.66
IV.FDMO.HHE. ML:2.1 0.001275 0.34 AML other m 2021-01-21T11:16:50.40
IV.CSP1.EHE. ML:2.2 0.00124 0.22 AML other m 2021-01-21T11:16:51.19
IV.GUMA.HNN. ML:2.4 0.001615 0.3 AML other m 2021-01-21T11:16:51.46
IV.GUMA.HHE. ML:2.3 0.001286 0.28 AML other m 2021-01-21T11:16:51.58
IV.CSP1.EHN. ML:2.4 0.00178 0.5 AML other m 2021-01-21T11:16:51.59
IV.CESI.HHN. ML:2.1 0.0007585 1.64 AML other m 2021-01-21T11:16:51.94
IV.GUMA.HHN. ML:2.4 0.001835 0.36 AML other m 2021-01-21T11:16:52.18
IV.GUMA.HNE. ML:2.3 0.00132 1.06 AML other m 2021-01-21T11:16:52.19
IV.CESI.HHE. ML:1.9 0.000594 0.3 AML other m 2021-01-21T11:16:53.22
IV.MTRA.HNN. ML:2 0.0006325 0.58 AML other m 2021-01-21T11:16:53.35
IV.MTRA.HNE. ML:2.1 0.0007625 0.44 AML other m 2021-01-21T11:16:53.61
IV.MTRA.EHE. ML:2.1 0.0007335 0.44 AML other m 2021-01-21T11:16:53.61
IV.MF5.EHE. ML:2 0.000614 0.8 AML other m 2021-01-21T11:16:54.50
IV.MTRA.EHN. ML:2 0.000608 0.38 AML other m 2021-01-21T11:16:54.43
IV.MF5.EHN. ML:1.9 0.000457 0.38 AML other m 2021-01-21T11:16:55.69
IV.SAP2.EHN. ML:2.7 0.00271 0.84 AML other m 2021-01-21T11:16:55.83
IV.GAVE.EHN. ML:2.1 0.0006895 0.46 AML other m 2021-01-21T11:16:56.39
IV.SAP2.EHE. ML:2 0.000534 0.58 AML other m 2021-01-21T11:16:56.13
IV.LNSS.HHE. ML:1.9 0.0003255 0.68 AML other m 2021-01-21T11:16:56.92
IV.GAVE.EHE. ML:2.1 0.0006745 1.68 AML other m 2021-01-21T11:16:57.07
IV.LNSS.HHN. ML:2 0.000422 0.56 AML other m 2021-01-21T11:16:58.28
IV.ASSB.HHN. ML:1.9 0.000265 1.04 AML other m 2021-01-21T11:16:58.06
IV.ASSB.HHE. ML:2 0.00031 0.28 AML other m 2021-01-21T11:16:58.59
IV.MNTT.EHN. ML:0 0.00075 1.62 AML other m 2021-01-21T11:16:59.87
IV.TERO.HHE. ML:1.7 0.000149 0.5 AML other m 2021-01-21T11:16:59.58
IV.SMA1.EHN. ML:1.8 0.0002945 0.52 AML other m 2021-01-21T11:16:59.94
IV.MNTT.EHE. ML:0 0.001205 0.18 AML other m 2021-01-21T11:17:00.09
IV.TERO.HHN. ML:1.9 0.000224 0.46 AML other m 2021-01-21T11:17:01.81
IV.ATCC.EHE. ML:2.1 0.0003475 1.66 AML other m 2021-01-21T11:17:01.12
IV.ATCC.EHN. ML:1.9 0.0001845 1.2 AML other m 2021-01-21T11:17:02.89
IV.SMA1.EHE. ML:1.9 0.000325 0.42 AML other m 2021-01-21T11:17:02.51
IV.ARVD.HHN. ML:1.5 5.435E-5 1.08 AML other m 2021-01-21T11:17:05.33
IV.ARVD.HHE. ML:1.7 8.18E-5 0.64 AML other m 2021-01-21T11:17:06.37
IV.PIEI.HHE. ML:1.6 5.61E-5 1.38 AML other m 2021-01-21T11:17:11.01
IV.FAGN.HHN. ML:0 0.000158 1.46 AML other m 2021-01-21T11:17:13.03
IV.PIEI.HHN. ML:1.6 4.485E-5 0.2 AML other m 2021-01-21T11:17:13.26
IV.FAGN.HHE. ML:0 0.000171 0.4 AML other m 2021-01-21T11:17:17.23
IV.CESI.HNE. ML:1.9 0.000528756 0.2048 AML other m 2021-01-21T11:16:53.22
IV.CESI.HNN. ML:2 0.0006641466 0.224 AML other m 2021-01-21T11:16:52.96
IV.TERO.HNE. ML:2 0.0002592231 0.3072 AML other m 2021-01-21T11:16:59.50
IV.TERO.HNN. ML:2 0.0002792173 0.4096 AML other m 2021-01-21T11:17:02.57
IV.T0110.HHN. ML:1.8 8.1764395E-5 0.3392 AML other m 2021-01-21T11:17:13.96
IV.T0110.HHE. ML:1.8 7.797599E-5 0.6784 AML other m 2021-01-21T11:17:19.28
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

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 miniseed + resp format Download