Earthquake with magnitude of ML 2.0 on date 11-03-2021 and time 22:17:12 (Italy) in region 3 km SE Ussita (MC)

A magnitude ML 2.0 earthquake occured in region: 3 km SE Ussita (MC), on

  • 11-03-2021 21:17:12 (UTC)
  • 11-03-2021 22:17:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.923, 13.161 at 9 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
Ussita MC 3 444 444
Castelsantangelo sul Nera MC 3 281 725
Visso MC 6 1107 1832
Bolognola MC 10 142 1974
Preci PG 11 724 2698
Acquacanina MC 12 121 2819
Fiastra MC 13 559 3378
Montemonaco AP 14 604 3982
Fiordimonte MC 14 202 4184
Montefortino FM 15 1178 5362
Monte Cavallo MC 15 145 5507
Norcia PG 15 4957 10464
Pieve Torina MC 16 1458 11922
Montegallo AP 17 523 12445
Pievebovigliana MC 17 866 13311
Sarnano MC 17 3264 16575
Amandola FM 17 3629 20204
Sellano PG 19 1079 21283
Arquata del Tronto AP 20 1178 22461

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
53 Km NW of Teramo (54892 inhabitants)
58 Km NE of Terni (111501 inhabitants)
66 Km E of Perugia (166134 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
100 Km NW 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 2.0 2021-03-11
21:17:12
42.9233 13.1607 9 2021-07-12
16:55:03
Bollettino Sismico Italiano INGV 88426671
Reviewed
Rev100
ML 2.0 2021-03-11
21:17:12
42.9172 13.158 9 2021-03-11
21:22:26
Sala Sismica INGV-Roma 88012441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-11 21:17:12 ± 0.04
Latitude 42.9233 ± 0.0027
Longitude 13.1607 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88426671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 301
Semi-minor axis of confidence ellipse (meter) 162
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 56
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) 39
Number of associated phases, regardless of their use for origin computation 54
Number of defining phases 53
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.86874
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 88426671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-22 19:11:48

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 88012441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-11 21:22:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ROM9.HNZ. 2021-03-11T21:17:53.81 3.0 undecidable manual S 0.91 0
IV.TERO.HHZ. 2021-03-11T21:17:29.15 0.3 undecidable manual S 133 0.4425 50 0.29 66
IV.CRTC.HHZ. 2021-03-11T21:17:29.54 0.3 undecidable manual P 347 0.8687 50 0.21 62
IV.EL6.EHE. 2021-03-11T21:17:28.11 0.3 undecidable manual S 354 0.4083 50 0.28 67
IV.RM33.EHZ. 2021-03-11T21:17:28.32 0.3 undecidable manual S 175 0.4164 50 0.25 67
IV.NARO.HHZ. 2021-03-11T21:17:28.14 0.6 undecidable manual P 329 0.8067 50 -0.13 42
IV.PIEI.HHZ. 2021-03-11T21:17:27.34 0.3 undecidable manual P 324 0.7626 50 -0.19 63
IV.SNTG.HHE. 2021-03-11T21:17:26.64 0.6 undecidable manual S 334 0.3687 50 -0.01 48
IV.SMA1.EHZ. 2021-03-11T21:17:25.34 0.6 undecidable manual S 156 0.3193 50 0.14 47
IV.LNSS.HHZ. 2021-03-11T21:17:25.69 0.6 undecidable manual S 195 0.3318 50 0.1 47
IV.ARVD.HHZ. 2021-03-11T21:17:24.48 0.1 undecidable manual P 345 0.5963 50 -0.2 87
IV.MURB.HHE. 2021-03-11T21:17:24.47 0.1 undecidable manual P 306 0.5747 50 0.15 89
IV.T1299.HNN. 2021-03-11T21:17:24.53 0.3 undecidable manual S 163 0.3022 50 -0.17 70
IV.CESX.HHZ. 2021-03-11T21:17:23.43 0.3 undecidable manual P 233 0.5252 50 -0.04 69
IV.MOMA.HNZ. 2021-03-11T21:17:22.08 0.1 undecidable manual P 255 0.4488 50 -0.08 92
IV.MTRA.EHZ. 2021-03-11T21:17:22.77 0.3 undecidable manual S 134 0.2401 108 0.29 69
IV.ARRO.EHZ. 2021-03-11T21:17:22.41 0.3 undecidable manual P 220 0.4497 50 0.23 67
IV.MML1.HNZ. 2021-03-11T21:17:22.47 0.3 undecidable manual S 324 0.2347 108 0.17 71
IV.ATCC.EHE. 2021-03-11T21:17:22.09 0.1 undecidable manual P 305 0.4614 50 -0.28 88
IV.RM33.EHZ. 2021-03-11T21:17:21.47 0.3 undecidable manual P 175 0.4164 50 -0.13 69
IV.PF6.EHZ. 2021-03-11T21:17:21.28 0.3 undecidable manual S 7 0.2158 110 -0.32 69
IV.MNTT.EHZ. 2021-03-11T21:17:21.14 0.1 undecidable manual P 66 0.3471 50 0.73 79
IV.CESI.HHZ. 2021-03-11T21:17:21.43 0.3 undecidable manual S 294 0.2041 111 0.25 70
IV.TERO.HHZ. 2021-03-11T21:17:21.79 0.6 undecidable manual P 133 0.4425 50 -0.26 45
IV.EL6.EHE. 2021-03-11T21:17:21.19 0.1 undecidable manual P 354 0.4083 50 -0.27 90
IV.CAMP.HHE. 2021-03-11T21:17:21.55 0.1 undecidable manual P 155 0.4281 50 -0.26 89
IV.CSP1.EHZ. 2021-03-11T21:17:20.14 0.6 undecidable manual S 11 0.1718 115 0.12 48
IV.GUMA.HHZ. 2021-03-11T21:17:20.89 0.3 undecidable manual S 42 0.1889 113 0.25 70
IV.SNTG.HHE. 2021-03-11T21:17:20.48 0.1 undecidable manual P 334 0.3687 50 -0.3 90
IV.MNTP.HNZ. 2021-03-11T21:17:20.14 0.1 undecidable manual P 46 0.3112 50 0.34 90
IV.LNSS.HHZ. 2021-03-11T21:17:20.03 0.3 undecidable manual P 195 0.3318 50 -0.13 70
IV.T1299.HNN. 2021-03-11T21:17:19.34 0.1 undecidable manual P 163 0.3022 50 -0.31 91
IV.SMA1.EHZ. 2021-03-11T21:17:19.70 0.1 undecidable manual P 156 0.3193 50 -0.24 92
IV.GAVE.EHN. 2021-03-11T21:17:19.73 1.0 undecidable manual P 220 0.3022 50 0.07 24
IT.MTCL.HGZ. 2021-03-11T21:17:19.12 0.6 undecidable manual S 301 0.1376 120 0.26 47
IV.SAP2.EHZ. 2021-03-11T21:17:18.58 0.3 undecidable manual P 45 0.2455 108 0.08 72
IV.MML1.HNZ. 2021-03-11T21:17:18.08 0.3 undecidable manual P 324 0.2347 108 -0.19 71
IV.MF5.EHZ. 2021-03-11T21:17:18.26 0.6 undecidable manual P 74 0.2284 109 0.14 48
IV.FDMO.HHZ. 2021-03-11T21:17:18.45 0.3 undecidable manual S 335 0.125 122 0.01 75
IV.MMO1.EHZ. 2021-03-11T21:17:18.48 0.3 undecidable manual S 101 0.1241 122 0.06 74
IV.MTRA.EHZ. 2021-03-11T21:17:18.30 0.3 undecidable manual P 134 0.2401 108 -0.08 72
IV.FEMA.HNZ. 2021-03-11T21:17:17.70 0.3 undecidable manual S 296 0.0899 131 0.35 70
IV.NRCA.HHZ. 2021-03-11T21:17:17.90 0.3 undecidable manual S 201 0.0962 129 0.36 70
IV.PF6.EHZ. 2021-03-11T21:17:17.56 0.1 undecidable manual P 7 0.2158 110 -0.3 92
IV.GUMA.HHZ. 2021-03-11T21:17:17.54 0.1 negative manual P 42 0.1889 113 0.23 94
IV.CESI.HHZ. 2021-03-11T21:17:17.73 0.1 undecidable manual P 294 0.2041 111 0.1 96
IV.MMO1.EHZ. 2021-03-11T21:17:16.02 0.1 negative manual P 101 0.1241 122 0 100
IT.MTCL.HGZ. 2021-03-11T21:17:16.30 0.3 undecidable manual P 301 0.1376 120 0.02 75
IV.CSP1.EHZ. 2021-03-11T21:17:16.81 0.6 undecidable manual P 11 0.1718 115 -0.14 48
IV.FEMA.HNZ. 2021-03-11T21:17:15.50 0.1 undecidable manual P 296 0.0899 131 0.09 99
IV.NRCA.HHZ. 2021-03-11T21:17:15.75 0.1 negative manual P 201 0.0962 129 0.23 96
IV.MC2.EHZ. 2021-03-11T21:17:15.04 0.3 undecidable manual S 120 0.0243 163 -0.88 59
IV.FDMO.HHZ. 2021-03-11T21:17:15.96 0.1 negative manual P 335 0.125 122 -0.08 98
IV.MC2.EHZ. 2021-03-11T21:17:14.26 0.1 undecidable manual P 120 0.0243 163 -0.33 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.4 0.003045 0.44 AML other m 2021-03-11T21:17:18.32
IV.NRCA.HNN. ML:2.2 0.002205 0.6 AML other m 2021-03-11T21:17:18.75
IV.NRCA.HHN. ML:2.2 0.002175 0.6 AML other m 2021-03-11T21:17:18.75
IV.NRCA.HNE. ML:2.3 0.002855 1.34 AML other m 2021-03-11T21:17:18.32
IV.FDMO.HHN. ML:2.3 0.002075 0.68 AML other m 2021-03-11T21:17:19.15
IV.FDMO.HHE. ML:2.2 0.00175 0.56 AML other m 2021-03-11T21:17:19.95
IV.CSP1.EHE. ML:2.2 0.001289 1.2 AML other m 2021-03-11T21:17:22.84
IV.CSP1.EHN. ML:2.2 0.001415 0.26 AML other m 2021-03-11T21:17:22.53
IV.CESI.HNN. ML:2.1 0.0008645 0.82 AML other m 2021-03-11T21:17:22.59
IV.CESI.HHE. ML:2 0.0007425 0.62 AML other m 2021-03-11T21:17:23.47
IV.CESI.HNE. ML:2 0.0007155 0.6 AML other m 2021-03-11T21:17:23.48
IV.GUMA.HHE. ML:2.2 0.001135 0.4 AML other m 2021-03-11T21:17:23.56
IV.MTRA.HNE. ML:1.9 0.000487 1.08 AML other m 2021-03-11T21:17:23.82
IV.CESI.HHN. ML:2 0.000739 0.32 AML other m 2021-03-11T21:17:24.18
IV.GUMA.HNE. ML:2.2 0.001225 0.44 AML other m 2021-03-11T21:17:24.56
IV.MTRA.EHE. ML:2 0.000494 1.18 AML other m 2021-03-11T21:17:24.08
IV.MTRA.HNN. ML:2.1 0.0006935 0.72 AML other m 2021-03-11T21:17:24.75
IV.MTRA.EHN. ML:2 0.000643 0.74 AML other m 2021-03-11T21:17:24.39
IV.GUMA.HHN. ML:2.2 0.001115 0.9 AML other m 2021-03-11T21:17:25.60
IV.GUMA.HNN. ML:2.2 0.00132 0.84 AML other m 2021-03-11T21:17:25.61
IV.LNSS.HHE. ML:1.8 0.000252 0.7 AML other m 2021-03-11T21:17:26.98
IV.SAP2.EHN. ML:2.7 0.002765 0.46 AML other m 2021-03-11T21:17:26.95
IV.SAP2.EHE. ML:1.9 0.000435 1.64 AML other m 2021-03-11T21:17:27.92
IV.LNSS.HHN. ML:1.8 0.000213 1.24 AML other m 2021-03-11T21:17:27.16
IV.RM33.HNN. ML:1.8 0.0001915 0.94 AML other m 2021-03-11T21:17:29.52
IV.RM33.EHN. ML:1.7 0.0001465 0.42 AML other m 2021-03-11T21:17:29.56
IV.MF5.EHN. ML:1.9 0.0005295 1.46 AML other m 2021-03-11T21:17:29.91
IV.RM33.EHE. ML:1.8 0.000169 1.04 AML other m 2021-03-11T21:17:30.39
IV.MF5.EHE. ML:2 0.0005535 1.36 AML other m 2021-03-11T21:17:30.85
IV.TERO.HHN. ML:1.7 0.0001465 0.9 AML other m 2021-03-11T21:17:30.92
IV.TERO.HHE. ML:1.5 8.745E-5 0.52 AML other m 2021-03-11T21:17:31.19
IV.SMA1.EHN. ML:1.9 0.0003195 1.36 AML other m 2021-03-11T21:17:31.93
IV.RM33.HNE. ML:1.9 0.00021 0.4 AML other m 2021-03-11T21:17:31.36
IV.ARRO.EHE. ML:1.4 7.185E-5 0.54 AML other m 2021-03-11T21:17:32.91
IV.SMA1.EHE. ML:2 0.000393 0.7 AML other m 2021-03-11T21:17:33.56
IV.MNTT.EHE. ML:2.5 0.0011615 1.04 AML other m 2021-03-11T21:17:33.71
IV.CESX.HHN. ML:1.8 0.0001325 0.32 AML other m 2021-03-11T21:17:34.17
IV.CESX.HHE. ML:1.7 9.955E-5 0.42 AML other m 2021-03-11T21:17:34.85
IV.ARVD.HHN. ML:1.6 6.515E-5 0.14 AML other m 2021-03-11T21:17:35.17
IV.ARRO.EHN. ML:1.5 8.245E-5 0.92 AML other m 2021-03-11T21:17:36.79
IV.MNTT.EHN. ML:2.1 0.000526 0.34 AML other m 2021-03-11T21:17:37.13
IV.ARVD.HHE. ML:1.8 0.0001062 0.26 AML other m 2021-03-11T21:17:37.65
IV.PIEI.HHN. ML:1.5 4.195E-5 0.68 AML other m 2021-03-11T21:17:43.64
IV.PIEI.HHE. ML:1.6 5.375E-5 0.48 AML other m 2021-03-11T21:17:45.21
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