Earthquake with magnitude of ML 1.1 on date 01-04-2020 and time 21:18:42 (Italy) in region 5 km NW Accumoli (RI)

A magnitude ML 1.1 earthquake occured in region: 5 km NW Accumoli (RI), on

  • 01-04-2020 19:18:42 (UTC)
  • 01-04-2020 21:18:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.72, 13.2 at 11 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Accumoli RI 5 667 667
Arquata del Tronto AP 10 1178 1845
Cittareale RI 12 482 2327
Norcia PG 12 4957 7284
Amatrice RI 12 2657 9941
Cascia PG 15 3217 13158
Montegallo AP 18 523 13681
Acquasanta Terme AP 18 2916 16597
Castelsantangelo sul Nera MC 20 281 16878

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Teramo (54892 inhabitants)
44 Km NW of L'Aquila (69753 inhabitants)
48 Km SE of Foligno (57155 inhabitants)
48 Km E of Terni (111501 inhabitants)
79 Km SE of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
88 Km W of Pescara (121014 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
89 Km W of Chieti (51815 inhabitants)
90 Km NE of Tivoli (56533 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
Recent and historical Seismicity
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 100 ML 1.1 2020-04-01
19:18:42
42.72 13.2 11 2020-04-01
19:37:36
Sala Sismica INGV-Roma 77766741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-01 19:18:42 ± 0.05
Latitude 42.72 ± 0.00
Longitude 13.20 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77766741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 333
Semi-minor axis of confidence ellipse (meter) 169
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 77
Circular confidence region, given by single value of horizontal uncertainty (meter) 330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 42
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 40
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) 0.61424
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 20
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 77766741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-01 19:37:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ROSPO.HHZ. 2020-04-01T19:19:23.94 3.0 undecidable manual S -0.2 0
IV.EL6.EHZ. 2020-04-01T19:19:02.91 0.3 undecidable manual S 353 0.6142 50 0.25 65
IV.MOMA.HHE. 2020-04-01T19:18:59.15 0.6 undecidable manual S 281 0.4685 50 0.79 38
IV.FIAM.HNE. 2020-04-01T19:18:58.24 0.6 undecidable manual S 188 0.4551 50 0.3 44
IV.AQU.HHZ. 2020-04-01T19:18:56.95 3.0 undecidable manual P 0
IV.CSP1.EHZ. 2020-04-01T19:18:55.70 0.1 undecidable manual S 1 0.3723 50 0.2 92
IV.GIGS.HHZ. 2020-04-01T19:18:55.54 0.3 undecidable manual S 134 0.3831 50 -0.26 68
IV.CESI.HHZ. 2020-04-01T19:18:54.95 0.3 undecidable manual S 323 0.3579 50 -0.11 70
IV.ARRO.EHZ. 2020-04-01T19:18:54.20 0.6 undecidable manual S 246 0.348 50 -0.56 42
IV.MF5.EHZ. 2020-04-01T19:18:54.79 0.6 undecidable manual S 35 0.3301 50 0.56 42
IV.EL6.EHZ. 2020-04-01T19:18:53.89 0.1 undecidable manual P 353 0.6142 50 -0.04 91
IV.TERO.HHZ. 2020-04-01T19:18:53.54 0.1 undecidable manual S 108 0.313 50 -0.2 93
IV.FDMO.HHZ. 2020-04-01T19:18:53.98 0.1 undecidable manual S 346 0.3274 50 -0.19 93
IV.FEMA.HNZ. 2020-04-01T19:18:52.10 0.1 undecidable manual S 336 0.2662 50 -0.25 93
IV.MOMA.HHE. 2020-04-01T19:18:51.21 0.6 undecidable manual P 281 0.4685 50 -0.23 45
IV.CAMP.HHZ. 2020-04-01T19:18:51.47 0.3 undecidable manual S 140 0.2401 50 -0.1 72
IV.MC2.EHZ. 2020-04-01T19:18:50.51 0.1 undecidable manual S 358 0.1925 50 0.34 92
IV.RM33.EHZ. 2020-04-01T19:18:50.52 0.3 undecidable manual S 177 0.2104 50 -0.17 71
IV.FIAM.HNE. 2020-04-01T19:18:50.77 0.3 undecidable manual P 188 0.4551 50 -0.43 65
IV.MMO1.EHZ. 2020-04-01T19:18:50.29 0.1 undecidable manual S 28 0.2032 50 -0.19 95
IV.CSP1.EHZ. 2020-04-01T19:18:49.77 0.1 undecidable manual P 1 0.3723 50 -0.02 96
IV.GIGS.HHZ. 2020-04-01T19:18:49.90 0.1 undecidable manual P 134 0.3831 50 -0.07 94
IV.CESI.HHZ. 2020-04-01T19:18:49.46 0.1 undecidable manual P 323 0.3579 50 -0.08 95
IV.LNSS.HHZ. 2020-04-01T19:18:49.37 0.1 undecidable manual S 225 0.1646 50 0.03 99
IV.ARRO.EHZ. 2020-04-01T19:18:49.60 0.6 undecidable manual P 246 0.348 50 0.23 46
IV.MF5.EHZ. 2020-04-01T19:18:49.61 0.1 undecidable manual P 35 0.3301 50 0.55 85
IV.TERO.HHZ. 2020-04-01T19:18:48.63 0.1 undecidable manual P 108 0.313 50 -0.14 94
IV.SMA1.EHZ. 2020-04-01T19:18:48.42 0.6 undecidable manual S 131 0.134 127 0 50
IV.FDMO.HHZ. 2020-04-01T19:18:48.86 0.1 negative manual P 346 0.3274 50 -0.17 94
IV.MTRA.EHZ. 2020-04-01T19:18:48.65 0.1 undecidable manual S 75 0.1502 50 -0.26 96
IV.FEMA.HNZ. 2020-04-01T19:18:48.17 0.3 undecidable manual P 336 0.2662 50 0.19 70
IV.RM33.EHZ. 2020-04-01T19:18:47.11 0.1 undecidable manual P 177 0.2104 50 0.09 97
IV.T1299.HNZ. 2020-04-01T19:18:47.76 0.1 undecidable manual S 144 0.1043 134 0.19 96
IV.CAMP.HHZ. 2020-04-01T19:18:47.53 0.1 undecidable manual P 140 0.2401 50 0.01 98
IV.NRCA.HHZ. 2020-04-01T19:18:47.91 0.1 undecidable manual S 332 0.1304 127 -0.4 94
IV.LNSS.HHZ. 2020-04-01T19:18:46.36 0.1 undecidable manual P 225 0.1646 50 0.12 97
IV.MMO1.EHZ. 2020-04-01T19:18:46.87 0.1 negative manual P 28 0.2032 50 -0.03 99
IV.MC2.EHZ. 2020-04-01T19:18:46.73 0.1 undecidable manual P 358 0.1925 50 0.01 99
IV.MTRA.EHZ. 2020-04-01T19:18:46.02 0.1 undecidable manual P 75 0.1502 50 0.03 99
IV.NRCA.HHZ. 2020-04-01T19:18:45.61 0.1 undecidable manual P 332 0.1304 127 -0.03 100
IV.SMA1.EHZ. 2020-04-01T19:18:45.90 0.1 undecidable manual P 131 0.134 127 0.19 96
IV.T1299.HNZ. 2020-04-01T19:18:45.60 0.1 undecidable manual P 144 0.1043 134 0.39 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.9 0.0007998825 0.1152 AML other m 2020-04-01T19:18:48.20
IV.NRCA.HHN. ML:1.8 0.00063822565 0.1152 AML other m 2020-04-01T19:18:48.24
IV.NRCA.HNE. ML:1.9 0.00074914515 0.0896 AML other m 2020-04-01T19:18:48.21
IV.NRCA.HNN. ML:1.8 0.00057181015 0.1152 AML other m 2020-04-01T19:18:48.24
IV.SMA1.EHE. ML:1.1 0.0001065681 0.2432 AML other m 2020-04-01T19:18:51.33
IV.SMA1.EHN. ML:1 9.056205E-5 0.1664 AML other m 2020-04-01T19:18:49.21
IV.MTRA.HNE. ML:1.3 0.00017708575 0.1536 AML other m 2020-04-01T19:18:49.34
IV.MTRA.HNN. ML:1.2 0.00013954006 0.1408 AML other m 2020-04-01T19:18:48.75
IV.MTRA.EHE. ML:1.3 0.0001751729 0.128 AML other m 2020-04-01T19:18:49.41
IV.MTRA.EHN. ML:1.2 0.000130862415 0.1536 AML other m 2020-04-01T19:18:48.75
IV.LNSS.HNE. ML:1.2 0.000140926695 0.1664 AML other m 2020-04-01T19:18:49.91
IV.LNSS.HNN. ML:1.5 0.0002287588 0.192 AML other m 2020-04-01T19:18:49.83
IV.LNSS.HHE. ML:1.3 0.0001584563 0.1536 AML other m 2020-04-01T19:18:49.93
IV.LNSS.HHN. ML:1.5 0.00023675195 0.1792 AML other m 2020-04-01T19:18:49.82
IV.RM33.EHE. ML:1.2 0.00010192639 0.1792 AML other m 2020-04-01T19:18:51.72
IV.RM33.EHN. ML:1 6.1410675E-5 0.2048 AML other m 2020-04-01T19:18:51.51
IV.CAMP.HHE. ML:0.9 3.9361105E-5 0.3072 AML other m 2020-04-01T19:18:51.73
IV.CAMP.HHN. ML:0.4 1.69286685E-5 0.2176 AML other m 2020-04-01T19:18:52.61
IV.TERO.HHE. ML:0.7 2.092693E-5 0.0768 AML other m 2020-04-01T19:18:54.76
IV.TERO.HHN. ML:0.9 2.920266E-5 0.0896 AML other m 2020-04-01T19:18:54.36
IV.FDMO.HHE. ML:1 3.9526615E-5 0.2432 AML other m 2020-04-01T19:18:54.84
IV.FDMO.HHN. ML:0.9 2.854214E-5 0.1024 AML other m 2020-04-01T19:18:54.46
IV.CESI.HHE. ML:0.9 2.9843805E-5 0.32 AML other m 2020-04-01T19:18:56.08
IV.CESI.HHN. ML:1 3.398126325E-5 0.1792 AML other m 2020-04-01T19:18:56.49
IV.MF5.EHE. ML:1 4.0206495E-5 0.3584 AML other m 2020-04-01T19:18:57.43
IV.MF5.EHN. ML:1.1 4.526938E-5 0.1152 AML other m 2020-04-01T19:18:57.46
IV.CSP1.EHE. ML:0.8 1.964734305E-5 0.2176 AML other m 2020-04-01T19:18:56.05
IV.CSP1.EHN. ML:0.7 1.57739685E-5 0.7808 AML other m 2020-04-01T19:18:56.59
IV.GIGS.HHE. ML:0.5 9.3234135E-6 0.0768 AML other m 2020-04-01T19:18:56.56
IV.GIGS.HHN. ML:0.5 1.080785E-5 0.1792 AML other m 2020-04-01T19:18:56.45
IV.EL6.EHE. ML:1.5 5.554735E-5 1.3056 AML other m 2020-04-01T19:19:09.61
IV.EL6.EHN. ML:1.6 7.2409705E-5 1.6384 AML other m 2020-04-01T19:19:02.17
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download