Earthquake with magnitude of ML 2.3 on date 18-04-2021 and time 12:10:12 (Italy) in region 2 km NW Amatrice (RI)

A magnitude ML 2.3 earthquake occured in region: 2 km NW Amatrice (RI), on

  • 18-04-2021 10:10:12 (UTC)
  • 18-04-2021 12:10:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.644, 13.272 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
Amatrice RI 2 2657 2657
Accumoli RI 6 667 3324
Cittareale RI 10 482 3806
Campotosto AQ 13 542 4348
Montereale AQ 13 2581 6929
Capitignano AQ 14 665 7594
Arquata del Tronto AP 15 1178 8772
Acquasanta Terme AP 18 2916 11688
Borbona RI 19 617 12305
Cortino TE 20 656 12961
Posta RI 20 694 13655

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of L'Aquila (69753 inhabitants)
36 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
58 Km SE of Foligno (57155 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
80 Km W of Pescara (121014 inhabitants)
80 Km W of Chieti (51815 inhabitants)
84 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km NE of Tivoli (56533 inhabitants)
89 Km SE of Perugia (166134 inhabitants)
99 Km E of Viterbo (67173 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 2.3 2021-04-18
10:10:12
42.6445 13.2718 8 2021-07-12
16:55:11
Bollettino Sismico Italiano INGV 90194891
Reviewed
Rev100
ML 2.4 2021-04-18
10:10:12
42.6408 13.2813 9 2021-04-18
10:19:18
Sala Sismica INGV-Roma 89208041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-18 10:10:12 ± 0.04
Latitude 42.6445 ± 0.0018
Longitude 13.2718 ± 0.0037
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 90194891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 309
Semi-minor axis of confidence ellipse (meter) 109
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 238
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 68
Number of defining phases 54
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) 0.78691
Number of stations at which the event was observed 44
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 52
Type of magnitude ML
Reference to an origin 90194891
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-28 14:00:16

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 89208041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-18 10:19:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CADC.EHZ. 2021-04-18T10:12:06.56 3.0 undecidable manual Sg 15.69 0
IV.DGI.HHZ. 2021-04-18T10:11:53.29 3.0 undecidable manual Sn 3.36 0
IV.CET2.HHZ. 2021-04-18T10:11:52.70 3.0 undecidable manual Sn 0.12 0
IV.MSSA.HHZ. 2021-04-18T10:11:51.62 3.0 undecidable manual Sg 10.82 0
IV.ZEN8.EHZ. 2021-04-18T10:11:47.96 3.0 undecidable manual Sn -0.44 0
IV.SELL.HHZ. 2021-04-18T10:11:33.95 3.0 undecidable manual Pg 15.06 0
AC.VLO.HHZ. 2021-04-18T10:11:30.99 3.0 negative manual Pn 2.38 0
IX.STN3.HHZ.02 2021-04-18T10:11:28.65 3.0 undecidable manual Sn -0.79 0
IV.MILN.HNZ. 2021-04-18T10:11:28.35 3.0 positive manual Pg 14.41 0
IV.GIZZ.HHZ. 2021-04-18T10:11:22.70 3.0 positive manual Pn 6.18 0
IV.MPPT.EHZ. 2021-04-18T10:11:21.39 3.0 undecidable manual Sg 8.38 0
OX.CIMO.HHZ. 2021-04-18T10:11:10.35 3.0 negative manual Pg 1.12 0
IV.FERS.EHZ. 2021-04-18T10:10:56.03 3.0 positive manual Pn 2.36 0
IV.SEI.HHZ. 2021-04-18T10:10:48.40 3.0 negative manual Pn 3.02 0
IV.INTR.HHZ. 2021-04-18T10:10:39.24 0.6 undecidable manual S 143 0.7869 50 0.17 43
IV.EL6.EHZ. 2021-04-18T10:10:36.36 0.3 undecidable manual S 350 0.6961 50 -0.02 68
IV.T0110.HHZ. 2021-04-18T10:10:32.32 0.3 undecidable manual S 138 0.5576 50 0.04 70
IV.MOMA.HHZ. 2021-04-18T10:10:32.04 0.3 undecidable manual S 287 0.5396 50 0.29 67
IV.VCEL.EHZ. 2021-04-18T10:10:30.69 0.3 undecidable manual S 121 0.4874 50 0.47 65
IV.FAGN.HHZ. 2021-04-18T10:10:29.23 0.3 undecidable manual S 149 0.4434 50 0.34 68
IV.CSP1.EHZ. 2021-04-18T10:10:29.08 0.3 undecidable manual S 354 0.4497 50 -0.02 72
IV.FDMO.HHZ. 2021-04-18T10:10:28.08 0.6 undecidable manual S 341 0.4146 50 0.03 48
IV.CESI.HHZ. 2021-04-18T10:10:28.88 0.3 undecidable manual S 323 0.4497 50 -0.21 69
IV.INTR.HHZ. 2021-04-18T10:10:27.21 0.6 undecidable manual P 143 0.7869 50 -0.67 38
IT.MTCL.HGZ. 2021-04-18T10:10:27.56 0.3 undecidable manual S 330 0.402 50 -0.13 71
IV.FIAM.HHZ. 2021-04-18T10:10:27.25 0.3 undecidable manual S 197 0.393 50 -0.17 71
IV.EL6.EHZ. 2021-04-18T10:10:26.32 0.6 undecidable manual P 350 0.6961 50 0 46
IV.MF5.EHZ. 2021-04-18T10:10:26.83 0.3 undecidable manual S 22 0.3696 50 0.1 72
IV.FEMA.HNZ. 2021-04-18T10:10:26.26 0.3 undecidable manual S 333 0.357 50 -0.08 73
MN.AQU.HNZ. 2021-04-18T10:10:24.18 0.3 undecidable manual S 161 0.3067 103 -0.51 67
IV.MOMA.HHZ. 2021-04-18T10:10:23.55 0.3 undecidable manual P 287 0.5396 50 -0.09 70
IV.TRTR.HHZ. 2021-04-18T10:10:23.84 0.1 undecidable manual P 71 0.4991 50 0.89 73
IV.T0110.HHZ. 2021-04-18T10:10:23.67 0.3 negative manual P 138 0.5576 50 -0.28 67
IV.GAVE.EHZ. 2021-04-18T10:10:23.49 0.3 undecidable manual S 280 0.2815 104 -0.26 71
IV.MMO1.EHZ. 2021-04-18T10:10:22.61 0.3 undecidable manual S 9 0.2581 105 -0.26 71
IV.CESI.HHZ. 2021-04-18T10:10:22.00 0.3 undecidable manual P 323 0.4497 50 -0.11 71
IV.VCEL.EHZ. 2021-04-18T10:10:22.78 0.1 undecidable manual P 121 0.4874 50 0.02 95
IV.MNTT.EHZ. 2021-04-18T10:10:22.87 0.6 undecidable manual P 30 0.4802 50 0.24 46
IV.CSP1.EHZ. 2021-04-18T10:10:21.91 0.3 positive manual P 354 0.4497 50 -0.2 69
IV.FDMO.HHZ. 2021-04-18T10:10:21.28 0.6 undecidable manual P 341 0.4146 50 -0.23 46
IV.OFFI.HHZ. 2021-04-18T10:10:21.90 0.6 undecidable manual P 46 0.42 50 0.29 46
IV.NRCA.HHZ. 2021-04-18T10:10:21.48 0.3 undecidable manual S 329 0.2212 108 -0.05 75
IV.FAGN.HHZ. 2021-04-18T10:10:21.53 0.6 undecidable manual P 149 0.4434 50 -0.47 44
IT.MTCL.HGZ. 2021-04-18T10:10:21.09 0.3 undecidable manual P 330 0.402 50 -0.21 70
IV.TERO.HNZ. 2021-04-18T10:10:21.78 0.3 undecidable manual S 95 0.2455 106 -0.62 65
IV.MF5.EHZ. 2021-04-18T10:10:20.96 0.1 positive manual P 22 0.3696 50 0.22 94
IV.FEMA.HNZ. 2021-04-18T10:10:20.47 0.3 undecidable manual P 333 0.357 50 -0.05 73
IV.LNSS.HHZ. 2021-04-18T10:10:20.05 0.3 undecidable manual S 256 0.1754 112 0.2 73
IV.ARRO.EHZ. 2021-04-18T10:10:20.61 0.3 undecidable manual P 260 0.3777 50 -0.28 69
IV.FIAM.HHZ. 2021-04-18T10:10:20.99 0.6 undecidable manual P 197 0.393 50 -0.16 47
MN.AQU.HNZ. 2021-04-18T10:10:19.19 0.3 undecidable manual P 161 0.3067 103 -0.38 69
IV.MTRA.HNZ. 2021-04-18T10:10:18.66 0.3 undecidable manual S 39 0.1448 116 -0.11 75
IV.GIGS.HJZ. 2021-04-18T10:10:18.83 0.6 undecidable manual P 131 0.2923 103 -0.44 45
IV.GAVE.EHZ. 2021-04-18T10:10:18.99 0.1 positive manual P 280 0.2815 104 -0.04 99
IV.MMO1.EHZ. 2021-04-18T10:10:18.48 0.3 undecidable manual P 9 0.2581 105 -0.04 75
IV.CAMP.HHZ. 2021-04-18T10:10:18.81 0.3 undecidable manual S 137 0.1484 115 -0.09 75
IV.MC2.EHZ. 2021-04-18T10:10:18.87 0.3 undecidable manual P 347 0.2734 104 0.01 75
IV.RM33.EHZ. 2021-04-18T10:10:18.83 0.6 undecidable manual S 197 0.1421 116 0.16 50
IV.TERO.HNZ. 2021-04-18T10:10:17.93 0.3 undecidable manual P 95 0.2455 106 -0.32 71
IV.LNSS.HHZ. 2021-04-18T10:10:17.13 0.3 undecidable manual P 256 0.1754 112 0.35 71
IV.NRCA.HHZ. 2021-04-18T10:10:17.93 0.1 positive manual P 329 0.2212 108 0.19 97
IV.RM33.EHZ. 2021-04-18T10:10:16.47 0.1 positive manual P 197 0.1421 116 0.37 95
IV.SMA1.EHZ. 2021-04-18T10:10:16.04 0.6 undecidable manual S 107 0.0486 145 0.17 50
IV.MTRA.HNZ. 2021-04-18T10:10:16.29 0.1 undecidable manual P 39 0.1448 116 0.13 100
IV.CAMP.HHZ. 2021-04-18T10:10:16.36 0.1 undecidable manual P 137 0.1484 115 0.13 100
IV.T1299.HNZ. 2021-04-18T10:10:15.17 0.6 undecidable manual S 143 0.0126 170 -0.15 51
IV.T1299.HNZ. 2021-04-18T10:10:14.40 0.1 undecidable manual P 143 0.0126 170 0.24 100
IV.SMA1.EHZ. 2021-04-18T10:10:14.85 0.1 positive manual P 107 0.0486 145 0.38 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0 0.0863 0.32 AML other m 2021-04-18T10:10:16.41
IV.SMA1.EHN. ML:0 0.0389 0.66 AML other m 2021-04-18T10:10:17.41
IV.CAMP.HHE. ML:2.6 0.00338 1.74 AML other m 2021-04-18T10:10:18.12
IV.MTRA.HNE. ML:2.7 0.004585 0.2 AML other m 2021-04-18T10:10:19.14
IV.MTRA.EHE. ML:2.7 0.00464 0.2 AML other m 2021-04-18T10:10:19.15
IV.CAMP.HHN. ML:2.4 0.00232 0.34 AML other m 2021-04-18T10:10:19.19
IV.MTRA.EHN. ML:2.7 0.00528 0.28 AML other m 2021-04-18T10:10:19.28
IV.MTRA.HNN. ML:2.7 0.00531 0.28 AML other m 2021-04-18T10:10:19.28
IV.RM33.HNN. ML:2.5 0.00298 0.66 AML other m 2021-04-18T10:10:19.43
IV.RM33.EHN. ML:2.5 0.00286 0.68 AML other m 2021-04-18T10:10:19.44
IV.RM33.HNE. ML:2.4 0.002495 0.66 AML other m 2021-04-18T10:10:20.42
IV.RM33.EHE. ML:2.4 0.00255 0.66 AML other m 2021-04-18T10:10:20.42
IV.LNSS.HHE. ML:2.4 0.00209 0.34 AML other m 2021-04-18T10:10:21.18
IV.TERO.HHN. ML:2.7 0.002745 1.4 AML other m 2021-04-18T10:10:21.27
IV.TERO.HNN. ML:2.7 0.002955 0.42 AML other m 2021-04-18T10:10:22.28
IV.NRCA.HHE. ML:2.4 0.00153 1.82 AML other m 2021-04-18T10:10:22.98
IV.NRCA.HNE. ML:2.4 0.00148 1.84 AML other m 2021-04-18T10:10:22.99
IV.TERO.HNE. ML:2.6 0.00214 0.26 AML other m 2021-04-18T10:10:22.43
IV.TERO.HHE. ML:2.5 0.001825 0.26 AML other m 2021-04-18T10:10:22.43
IV.LNSS.HHN. ML:2.4 0.00196 0.4 AML other m 2021-04-18T10:10:22.71
IV.NRCA.HNN. ML:2.1 0.0007795 0.84 AML other m 2021-04-18T10:10:23.49
IV.GAVE.EHN. ML:2.4 0.0010725 0.22 AML other m 2021-04-18T10:10:24.31
IV.NRCA.HHN. ML:2.1 0.00081 0.14 AML other m 2021-04-18T10:10:24.49
IV.GAVE.EHE. ML:2.4 0.00123 0.74 AML other m 2021-04-18T10:10:24.59
IV.MF5.EHE. ML:2.2 0.000515 0.38 AML other m 2021-04-18T10:10:27.78
IV.MF5.EHN. ML:2.4 0.0007585 0.42 AML other m 2021-04-18T10:10:27.85
IV.ARRO.EHE. ML:1.9 0.0002705 0.38 AML other m 2021-04-18T10:10:29.20
IV.FDMO.HHE. ML:1.8 0.0001915 0.22 AML other m 2021-04-18T10:10:29.42
IV.FIAM.HHN. ML:1.6 0.000139 0.44 AML other m 2021-04-18T10:10:29.52
IV.FDMO.HHN. ML:1.8 0.000191 0.82 AML other m 2021-04-18T10:10:30.39
IV.ARRO.EHN. ML:1.8 0.0002065 0.9 AML other m 2021-04-18T10:10:31.54
IV.FAGN.HHE. ML:2.7 0.001285 0.32 AML other m 2021-04-18T10:10:31.59
IV.CESI.HHE. ML:2 0.0002825 0.5 AML other m 2021-04-18T10:10:32.28
IV.FAGN.HHN. ML:2.5 0.0008535 0.32 AML other m 2021-04-18T10:10:32.86
IV.VCEL.EHN. ML:2.6 0.0010415 0.84 AML other m 2021-04-18T10:10:32.78
IV.VCEL.EHE. ML:2.8 0.001395 0.3 AML other m 2021-04-18T10:10:32.84
IV.CESI.HHN. ML:2.3 0.00048 0.96 AML other m 2021-04-18T10:10:33.49
IV.MNTT.EHN. ML:2.5 0.000725 0.54 AML other m 2021-04-18T10:10:33.09
IV.MNTT.EHE. ML:2.5 0.000822 1.1 AML other m 2021-04-18T10:10:33.99
IV.CSP1.EHE. ML:2.3 0.0004935 0.92 AML other m 2021-04-18T10:10:33.31
IV.MOMA.HNE. ML:2.2 0.000294 0.2 AML other m 2021-04-18T10:10:33.84
IV.MOMA.HHE. ML:2.2 0.0002965 0.18 AML other m 2021-04-18T10:10:33.93
IV.CSP1.EHN. ML:2.4 0.0007385 1.14 AML other m 2021-04-18T10:10:34.39
IV.T0110.HHN. ML:2.4 0.000539 0.84 AML other m 2021-04-18T10:10:35.24
IV.MOMA.HNN. ML:2.2 0.0003445 0.44 AML other m 2021-04-18T10:10:35.69
IV.MOMA.HHN. ML:2.1 0.0002485 0.38 AML other m 2021-04-18T10:10:36.87
IV.FIAM.HHE. ML:1.6 0.0001405 0.54 AML other m 2021-04-18T10:10:38.22
IV.T0110.HHE. ML:2.5 0.000598 0.48 AML other m 2021-04-18T10:10:38.97
IV.INTR.HNN. ML:2.2 0.0002065 0.84 AML other m 2021-04-18T10:10:43.21
IV.EL6.EHN. ML:2.1 0.0002005 1.22 AML other m 2021-04-18T10:10:44.72
IV.EL6.EHE. ML:2 0.00014705 1.24 AML other m 2021-04-18T10:10:47.01
IV.INTR.HHN. ML:2.1 0.0001695 0.76 AML other m 2021-04-18T10:10:47.54
IV.INTR.HHE. ML:2 0.0001198 0.64 AML other m 2021-04-18T10:10:52.67
IV.INTR.HNE. ML:2.1 0.0001516 0.68 AML other m 2021-04-18T10:10:52.34
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