Earthquake with magnitude of ML 2.1 on date 20-04-2019 and time 16:01:54 (UTC) in region 4 km NW Amatrice (RI)

A magnitude ML 2.1 earthquake occured in region: 4 km NW Amatrice (RI), on

  • 20-04-2019 16:01:54 (UTC)
  • 20-04-2019 18:01:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.66, 13.26 at 11 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 4 2657 2657
Accumoli RI 4 667 3324
Cittareale RI 10 482 3806
Arquata del Tronto AP 13 1178 4984
Campotosto AQ 14 542 5526
Montereale AQ 15 2581 8107
Capitignano AQ 16 665 8772
Acquasanta Terme AP 17 2916 11688
Borbona RI 20 617 12305

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NW of L'Aquila (69753 inhabitants)
36 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
56 Km SE of Foligno (57155 inhabitants)
74 Km W of Montesilvano (53738 inhabitants)
81 Km W of Pescara (121014 inhabitants)
82 Km W of Chieti (51815 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
86 Km NE of Tivoli (56533 inhabitants)
87 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 last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. 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 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
Rev 1000 ML 2.1 2019-04-20
16:01:54
42.66 13.27 11 2019-08-22
08:25:04
Bollettino Sismico Italiano INGV 69761491
Rev 100 ML 2.0 2019-04-20
16:01:54
42.67 13.27 12 2019-04-20
16:11:53
Sala Sismica INGV-Roma 67789351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-20 16:01:54 ± 0.06
Latitude 42.66 ± 0.00
Longitude 13.27 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 69761491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 394
Semi-minor axis of confidence ellipse (meter) 315
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 85
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 55
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.02433
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.2
Num. used stations 40
Type of magnitude ML
Reference to an origin 67789351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-20 16:11:53

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 56
Type of magnitude ML
Reference to an origin 69761491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-06-21 09:44:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATFO.HHZ. 2019-04-20T16:02:25.14 3.0 undecidable manual S -0.2 0
IV.MIDA.HHZ. 2019-04-20T16:02:16.61 3.0 undecidable manual P -0.87 0
IV.PIEI.HHZ. 2019-04-20T16:02:14.12 0.3 undecidable manual P 329 1.0243 50 0.23 60
IV.MOMA.HHZ. 2019-04-20T16:02:13.81 0.3 undecidable manual S 286 0.5297 50 0.69 58
IV.CESX.HHZ. 2019-04-20T16:02:12.98 3.0 undecidable manual S 0
IV.GUMA.HHZ. 2019-04-20T16:02:10.06 0.3 undecidable manual S 7 0.4056 50 0.62 61
IV.CSP1.EHZ. 2019-04-20T16:02:10.31 0.3 undecidable manual S 354 0.4335 50 0.04 71
IV.EL6.EHZ. 2019-04-20T16:02:08.05 0.3 undecidable manual P 350 0.6799 50 0.06 67
IV.MF5.EHZ. 2019-04-20T16:02:08.80 0.3 undecidable manual S 23 0.357 50 0.8 58
IV.FDMO.HHZ. 2019-04-20T16:02:08.97 0.3 undecidable manual S 341 0.3984 50 -0.24 68
IV.SNTG.HHZ. 2019-04-20T16:02:07.14 0.3 undecidable manual P 338 0.6403 50 -0.18 66
IV.CESX.HHZ. 2019-04-20T16:02:06.35 3.0 undecidable manual P 0
IV.T0110.HHZ. 2019-04-20T16:02:06.09 0.3 undecidable manual P 139 0.572 50 -0.06 68
IV.MNTT.EHZ. 2019-04-20T16:02:05.06 0.3 undecidable manual P 31 0.4694 50 0.67 60
IV.MOMA.HHZ. 2019-04-20T16:02:05.45 0.3 undecidable manual P 286 0.5297 50 0.01 70
IV.GAVE.EHZ. 2019-04-20T16:02:05.28 0.3 undecidable manual S 277 0.2743 50 -0.26 70
IV.VCEL.EHZ. 2019-04-20T16:02:05.22 0.3 undecidable manual P 122 0.5 50 0.3 66
IV.TERO.HHZ. 2019-04-20T16:02:04.34 0.3 undecidable manual S 98 0.2518 50 -0.53 66
IV.MC2.EHZ. 2019-04-20T16:02:04.96 0.3 undecidable manual S 347 0.2572 50 -0.08 73
IV.FAGN.HHZ. 2019-04-20T16:02:04.25 0.6 undecidable manual P 149 0.4587 50 0.03 47
IV.SAP2.EHZ. 2019-04-20T16:02:04.20 0.3 undecidable manual P 13 0.447 50 0.18 68
IV.FIAM.HHZ. 2019-04-20T16:02:03.32 0.3 undecidable manual P 196 0.4065 50 0 71
IV.GUMA.HHZ. 2019-04-20T16:02:03.39 0.1 positive manual P 7 0.4056 50 0.08 94
IV.CESI.HHZ. 2019-04-20T16:02:03.57 0.1 negative manual P 323 0.4344 50 -0.23 91
IV.CSP1.EHZ. 2019-04-20T16:02:03.46 1.0 undecidable manual P 354 0.4335 50 -0.33 22
IV.OFFI.HHZ. 2019-04-20T16:02:03.98 0.3 undecidable manual P 48 0.4128 50 0.55 63
IV.CAMP.HHZ. 2019-04-20T16:02:02.09 0.3 undecidable manual S 140 0.1628 50 -0.16 73
IV.MF5.EHZ. 2019-04-20T16:02:02.65 0.1 positive manual P 23 0.357 50 0.17 93
IV.RM33.HNZ. 2019-04-20T16:02:02.15 0.3 undecidable manual S 194 0.1556 50 0.13 73
IV.FDMO.HHZ. 2019-04-20T16:02:02.95 0.1 undecidable manual P 341 0.3984 50 -0.23 91
IV.LNSS.HHZ. 2019-04-20T16:02:02.63 0.3 undecidable manual S 251 0.1745 50 0.03 74
IV.NRCA.HNZ. 2019-04-20T16:02:02.96 0.3 undecidable manual S 327 0.2059 50 -0.55 66
IV.GIGS.HHZ. 2019-04-20T16:02:01.29 0.1 negative manual P 132 0.3067 50 -0.32 91
MN.AQU.HHE. 2019-04-20T16:02:01.72 0.6 undecidable manual P 161 0.3229 50 -0.17 47
IV.FEMA.HNE. 2019-04-20T16:02:01.96 0.1 undecidable manual P 332 0.3408 50 -0.24 92
IV.TERO.HHZ. 2019-04-20T16:02:00.43 0.3 undecidable manual P 98 0.2518 50 -0.25 70
IV.MC2.EHZ. 2019-04-20T16:02:00.62 0.3 undecidable manual P 347 0.2572 50 -0.15 71
IV.MTRA.HNZ. 2019-04-20T16:02:00.83 0.3 undecidable manual S 45 0.1367 126 -0.62 65
IV.GAVE.EHZ. 2019-04-20T16:02:00.92 0.1 undecidable manual P 277 0.2743 50 -0.14 95
IV.NRCA.HNZ. 2019-04-20T16:01:59.65 0.1 negative manual P 327 0.2059 50 -0.24 94
IV.CAMP.HHZ. 2019-04-20T16:01:59.16 0.1 negative manual P 140 0.1628 50 0 100
IV.SMA1.EHZ. 2019-04-20T16:01:59.45 0.3 undecidable manual S 120 0.0594 149 0.05 76
IV.RM33.HNZ. 2019-04-20T16:01:59.18 0.1 positive manual P 194 0.1556 50 0.15 97
IV.LNSS.HHZ. 2019-04-20T16:01:59.43 0.1 positive manual P 251 0.1745 50 0.07 98
IV.MTRA.HNZ. 2019-04-20T16:01:58.53 0.1 positive manual P 45 0.1367 126 -0.16 97
IV.T1299.EHE. 2019-04-20T16:01:58.98 0.3 undecidable manual S 154 0.0288 164 0.06 76
IV.T1299.EHE. 2019-04-20T16:01:57.51 0.1 negative manual P 154 0.0288 164 0.27 97
IV.SMA1.EHZ. 2019-04-20T16:01:57.73 0.1 negative manual P 120 0.0594 149 0.22 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:2.3 0.0027157515 0.1664 AML other m 2019-04-20T16:01:59.49
IV.SMA1.EHE. ML:2.3 0.0031039145 0.2432 AML other m 2019-04-20T16:02:00.04
IV.MTRA.EHE. ML:2.6 0.00369788 0.1536 AML other m 2019-04-20T16:02:00.99
IV.MTRA.HNE. ML:2.6 0.0037274975 0.1408 AML other m 2019-04-20T16:02:00.98
IV.MTRA.HNN. ML:2.5 0.003196928 0.1408 AML other m 2019-04-20T16:02:00.90
IV.MTRA.EHN. ML:2.5 0.003207322 0.1664 AML other m 2019-04-20T16:02:00.98
IV.CAMP.HHE. ML:1.8 0.0004795836 0.2048 AML other m 2019-04-20T16:02:02.28
IV.CAMP.HHN. ML:1.7 0.00035876275 0.2816 AML other m 2019-04-20T16:02:02.37
IV.RM33.EHN. ML:2 0.0008491318 0.1792 AML other m 2019-04-20T16:02:02.88
IV.RM33.HNN. ML:2 0.00079140315 0.1792 AML other m 2019-04-20T16:02:02.87
IV.RM33.EHE. ML:2 0.0008556781 0.2048 AML other m 2019-04-20T16:02:02.91
IV.RM33.HNE. ML:2 0.00093269365 0.2176 AML other m 2019-04-20T16:02:02.91
IV.LNSS.HNE. ML:2.4 0.0016987955 0.1536 AML other m 2019-04-20T16:02:03.56
IV.LNSS.HHE. ML:2.4 0.0018575995 0.1664 AML other m 2019-04-20T16:02:03.56
IV.LNSS.HHN. ML:2.5 0.002408947 0.4608 AML other m 2019-04-20T16:02:02.95
IV.LNSS.HNN. ML:2.5 0.0022535675 0.3072 AML other m 2019-04-20T16:02:02.96
IV.NRCA.HNN. ML:2.5 0.0018625925 0.1408 AML other m 2019-04-20T16:02:03.40
IV.NRCA.HHE. ML:2.7 0.003184488 0.0896 AML other m 2019-04-20T16:02:03.46
IV.NRCA.HNE. ML:2.7 0.002926385 0.0896 AML other m 2019-04-20T16:02:03.46
IV.NRCA.HHN. ML:2.5 0.0019836575 0.0896 AML other m 2019-04-20T16:02:03.03
IV.TERO.HHN. ML:2.1 0.0006518811 0.1408 AML other m 2019-04-20T16:02:05.24
IV.TERO.HHE. ML:1.9 0.0004452619 0.1024 AML other m 2019-04-20T16:02:05.96
IV.TERO.HNN. ML:1.7 0.00027422415 0.1536 AML other m 2019-04-20T16:02:04.42
IV.TERO.HNE. ML:1.6 0.00019719945 0.1536 AML other m 2019-04-20T16:02:04.62
IV.GAVE.EHN. ML:2.5 0.0015442065 0.2432 AML other m 2019-04-20T16:02:05.68
IV.GAVE.HNN. ML:2 0.00047057055 0.2432 AML other m 2019-04-20T16:02:05.69
IV.GAVE.HNE. ML:2.3 0.0008904996 0.1792 AML other m 2019-04-20T16:02:08.17
IV.GAVE.EHE. ML:2.3 0.00086128985 0.3072 AML other m 2019-04-20T16:02:06.98
IV.GIGS.HHE. ML:1 3.8182845E-5 0.2944 AML other m 2019-04-20T16:02:11.49
IV.GIGS.HHN. ML:1.1 5.07431155E-5 0.1536 AML other m 2019-04-20T16:02:08.36
IV.MF5.EHE. ML:2.1 0.00043282925 0.1792 AML other m 2019-04-20T16:02:09.35
IV.MF5.EHN. ML:2.1 0.0004342699 0.2432 AML other m 2019-04-20T16:02:08.99
IV.FDMO.HHN. ML:2.1 0.0003436538 0.2432 AML other m 2019-04-20T16:02:10.78
IV.FDMO.HHE. ML:2 0.0002900454 0.1792 AML other m 2019-04-20T16:02:10.91
IV.FIAM.HHE. ML:1.5 8.76429E-5 0.3968 AML other m 2019-04-20T16:02:10.14
IV.FIAM.HHN. ML:1.5 8.312075E-5 0.3456 AML other m 2019-04-20T16:02:10.20
IV.FIAM.HNN. ML:1.7 0.00015112665 0.7168 AML other m 2019-04-20T16:02:19.46
IV.GUMA.HNN. ML:2.7 0.001492402 0.3456 AML other m 2019-04-20T16:02:11.35
IV.GUMA.HHN. ML:2.6 0.00112403835 0.3328 AML other m 2019-04-20T16:02:11.07
IV.GUMA.HNE. ML:2.7 0.00137296685 0.2944 AML other m 2019-04-20T16:02:10.41
IV.GUMA.HHE. ML:2.8 0.001857196 0.32 AML other m 2019-04-20T16:02:10.39
IV.CSP1.EHN. ML:2.1 0.0003235606 0.3072 AML other m 2019-04-20T16:02:11.64
IV.CSP1.EHE. ML:2.1 0.0003477187 0.32 AML other m 2019-04-20T16:02:10.50
IV.CESI.HHE. ML:1.8 0.00016074907 0.1024 AML other m 2019-04-20T16:02:11.18
IV.CESI.HHN. ML:2 0.00024411395 0.1408 AML other m 2019-04-20T16:02:11.30
IV.OFFI.HHE. ML:1.9 0.0002207033 0.2432 AML other m 2019-04-20T16:02:14.00
IV.OFFI.HHN. ML:2.5 0.00085358035 0.4352 AML other m 2019-04-20T16:02:12.81
IV.SAP2.EHE. ML:2 0.00027132525 0.1408 AML other m 2019-04-20T16:02:13.25
IV.SAP2.EHN. ML:2.7 0.0014915635 0.256 AML other m 2019-04-20T16:02:15.10
IV.FAGN.HHE. ML:2 0.0002829018 0.3456 AML other m 2019-04-20T16:02:13.66
IV.FAGN.HHN. ML:2.1 0.0003422962 0.2432 AML other m 2019-04-20T16:02:14.28
IV.MNTT.EHN. ML:2.1 0.0002888428 0.3584 AML other m 2019-04-20T16:02:16.10
IV.VCEL.EHE. ML:1.8 0.00014050605 0.2432 AML other m 2019-04-20T16:02:17.62
IV.VCEL.EHN. ML:1.8 0.00015691115 0.256 AML other m 2019-04-20T16:02:14.94
IV.MOMA.HHN. ML:2.1 0.0002807637 0.1792 AML other m 2019-04-20T16:02:14.83
IV.MOMA.HNE. ML:2.1 0.0002423424 0.1664 AML other m 2019-04-20T16:02:15.33
IV.MOMA.HHE. ML:2.1 0.00025590745 0.1536 AML other m 2019-04-20T16:02:15.42
IV.MOMA.HNN. ML:2.1 0.0002749581 0.2176 AML other m 2019-04-20T16:02:14.82
IV.T0110.HHE. ML:2 0.0001687858 0.6272 AML other m 2019-04-20T16:02:16.83
IV.T0110.HHN. ML:1.9 0.0001427519 0.32 AML other m 2019-04-20T16:02:20.63
IV.SNTG.HNE. ML:1.9 0.00014005495 0.4736 AML other m 2019-04-20T16:02:22.43
IV.SNTG.HHN. ML:1.5 5.555705E-5 0.256 AML other m 2019-04-20T16:02:21.35
IV.SNTG.HHE. ML:1.6 6.1209745E-5 0.1024 AML other m 2019-04-20T16:02:18.61
IV.EL6.EHE. ML:2.1 0.00018517913 0.2176 AML other m 2019-04-20T16:02:19.92
IV.EL6.EHN. ML:2 0.000163377915 0.2048 AML other m 2019-04-20T16:02:21.19
IV.PIEI.HHN. ML:1.5 2.7456645E-5 0.2048 AML other m 2019-04-20T16:02:31.56
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