Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 06-04-2020 and time 10:30:17 (Italy) in region 6 km NW Accumoli (RI)

A magnitude ML 1.7 earthquake occured in region: 6 km NW Accumoli (RI), on

  • 06-04-2020 08:30:17 (UTC)
  • 06-04-2020 10:30:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7360, 13.2020 at 10 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.

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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 6 667 667
Arquata del Tronto AP 9 1178 1845
Norcia PG 11 4957 6802
Cittareale RI 13 482 7284
Amatrice RI 14 2657 9941
Cascia PG 16 3217 13158
Montegallo AP 16 523 13681
Acquasanta Terme AP 17 2916 16597
Castelsantangelo sul Nera MC 18 281 16878

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Teramo (54892 inhabitants)
46 Km NW of L'Aquila (69753 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
49 Km E of Terni (111501 inhabitants)
78 Km SE of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
88 Km W of Pescara (121014 inhabitants)
90 Km W of Chieti (51815 inhabitants)
91 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km NE of Tivoli (56533 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.7 2020-04-06
08:30:17		 42.7355 13.2022 10 2020-07-18
21:08:38		 Bollettino Sismico Italiano INGV 79794161
Reviewed
Rev100 		ML 1.6 2020-04-06
08:30:17		 42.7412 13.2025 11 2020-04-06
08:39:33		 Sala Sismica INGV-Roma 77949041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-06 08:30:17 ± 0.07
Latitude 42.7355 ± 0.0036
Longitude 13.2022 ± 0.0061
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79794161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 507
Semi-minor axis of confidence ellipse (meter) 211
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 69
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 38
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.59805
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 79794161
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-01 19:42:31

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 77949041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-06 08:39:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PAOL.HHZ. 2020-04-06T08:31:15.84 3.0 undecidable manual Sn -4.81 0
IV.RIBO.EHZ.01 2020-04-06T08:31:12.63 3.0 undecidable manual Sg 1.65 0
IV.MAON.HHZ. 2020-04-06T08:30:48.98 3.0 undecidable manual Pg 1.54 0
IV.FOSV.EHZ. 2020-04-06T08:30:37.59 3.0 undecidable manual S -5.77 0
IV.MNTT.EHZ. 2020-04-06T08:30:36.14 0.3 undecidable manual S 41 48.3183 50 2.76 9
IV.MOMA.HHZ. 2020-04-06T08:30:35.00 0.3 undecidable manual S 279 52.0035 50 0.63 60
IV.SAP2.EHZ. 2020-04-06T08:30:33.28 3.0 undecidable manual S -0.18 0
IV.MML1.HNZ. 2020-04-06T08:30:32.68 0.3 undecidable manual S 336 45.9207 50 -0.06 70
IV.GUMA.HHZ. 2020-04-06T08:30:31.16 0.3 undecidable manual S 17 37.8288 50 0.57 63
IV.GIGS.HHZ. 2020-04-06T08:30:31.69 0.3 undecidable manual S 136 43.5231 50 -0.42 65
IV.MF5.EHZ. 2020-04-06T08:30:30.54 0.3 undecidable manual S 37 34.9428 50 0.73 60
IV.EL6.EHZ. 2020-04-06T08:30:30.31 0.3 undecidable manual P 353 66.378 50 0.7 57
IV.CESI.HHZ. 2020-04-06T08:30:30.46 0.3 undecidable manual S 321 38.4282 50 -0.29 68
IV.CSP1.EHZ. 2020-04-06T08:30:30.92 0.3 undecidable manual S 0 39.5271 50 -0.12 70
IV.TERO.HHZ. 2020-04-06T08:30:29.53 0.1 undecidable manual S 111 35.0427 50 -0.32 90
IV.SNTG.HHZ. 2020-04-06T08:30:29.72 3.0 undecidable manual P 0
IV.FDMO.HHZ. 2020-04-06T08:30:29.36 0.1 undecidable manual S 344 34.6431 50 -0.38 89
IV.MNTT.EHZ. 2020-04-06T08:30:27.92 0.3 undecidable manual P 41 48.3183 50 1.09 49
IV.RM33.EHZ. 2020-04-06T08:30:27.21 0.3 undecidable manual S 178 25.1526 50 0.01 73
IV.CAMP.HHZ. 2020-04-06T08:30:27.76 0.3 undecidable manual S 143 27.8499 50 -0.16 71
IV.MOMA.HHZ. 2020-04-06T08:30:27.50 0.3 undecidable manual P 279 52.0035 50 0.1 69
IV.MML1.HNZ. 2020-04-06T08:30:26.26 0.3 undecidable manual P 336 45.9207 50 -0.2 68
IV.MMO1.EHZ. 2020-04-06T08:30:25.68 0.1 undecidable manual S 29 20.7681 116 -0.26 94
IV.CSP1.EHZ. 2020-04-06T08:30:25.19 0.3 undecidable manual P 0 39.5271 50 -0.28 68
IV.GUMA.HHZ. 2020-04-06T08:30:25.33 0.3 undecidable manual P 17 37.8288 50 0.11 70
IV.GIGS.HHZ. 2020-04-06T08:30:25.77 0.1 undecidable manual P 136 43.5231 50 -0.32 89
IV.LNSS.HHZ. 2020-04-06T08:30:25.67 0.3 undecidable manual S 222 19.7691 118 0.05 73
IV.T1299.HNZ. 2020-04-06T08:30:24.09 0.3 undecidable manual S 150 12.9759 129 0.45 68
IV.FDMO.HHZ. 2020-04-06T08:30:24.51 0.3 undecidable manual P 344 34.6431 50 -0.21 69
IV.MTRA.HNZ. 2020-04-06T08:30:24.30 0.1 undecidable manual S 82 15.9729 123 -0.19 96
IV.TERO.HHZ. 2020-04-06T08:30:24.55 0.1 undecidable manual P 111 35.0427 50 -0.23 92
IV.SMA1.EHZ. 2020-04-06T08:30:24.59 0.3 undecidable manual S 137 15.9729 123 0.12 73
IV.MF5.EHZ. 2020-04-06T08:30:24.96 0.3 undecidable manual P 37 34.9428 50 0.19 69
IV.CESI.HHZ. 2020-04-06T08:30:24.99 0.3 undecidable manual P 321 38.4282 50 -0.32 67
IV.RM33.EHZ. 2020-04-06T08:30:23.23 0.3 undecidable manual P 178 25.1526 50 -0.03 73
IV.NRCA.HNZ. 2020-04-06T08:30:23.36 0.3 undecidable manual S 327 12.9759 129 -0.29 71
IV.ARRO.EHZ. 2020-04-06T08:30:23.72 3.0 undecidable manual P 0
IV.CAMP.HHZ. 2020-04-06T08:30:23.49 0.3 undecidable manual P 143 27.8499 50 -0.18 71
IV.LNSS.HHZ. 2020-04-06T08:30:22.31 0.3 undecidable manual P 222 19.7691 118 -0.03 74
IV.MMO1.EHZ. 2020-04-06T08:30:22.36 0.1 undecidable manual P 29 20.7681 116 -0.17 95
IV.MC2.EHZ. 2020-04-06T08:30:22.24 0.3 undecidable manual P 357 19.5693 118 -0.06 73
IV.NRCA.HNZ. 2020-04-06T08:30:21.20 0.1 undecidable manual P 327 12.9759 129 -0.01 100
IV.T1299.HNZ. 2020-04-06T08:30:21.55 0.1 undecidable manual P 150 12.9759 129 0.35 93
IV.MTRA.HNZ. 2020-04-06T08:30:21.68 0.1 undecidable manual P 82 15.9729 123 -0.01 99
IV.SMA1.EHZ. 2020-04-06T08:30:21.82 0.1 undecidable manual P 137 15.9729 123 0.14 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:2.1 0.0010917421 0.1216 AML other m 2020-04-06T08:30:24.44
IV.MTRA.EHN. ML:1.8 0.0006129466500000001 0.1024 AML other m 2020-04-06T08:30:24.87
IV.MTRA.HNE. ML:2.1 0.0010914285 0.128 AML other m 2020-04-06T08:30:24.44
IV.MTRA.HNN. ML:1.8 0.00060606195 0.1088 AML other m 2020-04-06T08:30:24.87
IV.SMA1.EHE. ML:1.4 0.00024504485 0.2368 AML other m 2020-04-06T08:30:27.08
IV.SMA1.EHN. ML:1.4 0.0002213733 0.2176 AML other m 2020-04-06T08:30:24.62
IV.LNSS.HNE. ML:1.7 0.0003902872 0.1984 AML other m 2020-04-06T08:30:25.98
IV.LNSS.HHE. ML:1.7 0.0003992379 0.1408 AML other m 2020-04-06T08:30:25.88
IV.LNSS.HNN. ML:1.7 0.00039110495000000003 0.1792 AML other m 2020-04-06T08:30:26.51
IV.LNSS.HHN. ML:1.8 0.00042552919999999997 0.1984 AML other m 2020-04-06T08:30:26.52
IV.TERO.HNE. ML:1.6 0.0001703718 0.1536 AML other m 2020-04-06T08:30:30.32
IV.TERO.HHN. ML:1.7 0.00020089369999999997 0.0832 AML other m 2020-04-06T08:30:30.33
IV.TERO.HHE. ML:1.5 0.00012723025 0.1792 AML other m 2020-04-06T08:30:30.79
IV.TERO.HNN. ML:1.6 0.00015838010000000002 0.096 AML other m 2020-04-06T08:30:30.69
IV.MF5.EHE. ML:1.4 0.000090626805 0.5568 AML other m 2020-04-06T08:30:30.98
IV.MF5.EHN. ML:1.3 0.00008045868500000001 0.3392 AML other m 2020-04-06T08:30:31.02
IV.GUMA.HHE. ML:1.7 0.00018255505 0.2432 AML other m 2020-04-06T08:30:33.61
IV.GUMA.HHN. ML:1.8 0.0002263938 0.4224 AML other m 2020-04-06T08:30:32.81
IV.GUMA.HNE. ML:1.8 0.0002420508 0.3136 AML other m 2020-04-06T08:30:32.98
IV.GUMA.HNN. ML:1.9 0.00030889279999999996 4.0512 AML other m 2020-04-06T08:30:31.58
IV.MOMA.HHN. ML:1.4 0.00005731037 0.16 AML other m 2020-04-06T08:30:36.39
IV.MOMA.HHE. ML:1.9 0.00018758665000000003 0.1984 AML other m 2020-04-06T08:30:36.02
IV.MNTT.EHN. ML:1.8 0.0001671203 0.4416 AML other m 2020-04-06T08:30:39.05
IV.MNTT.EHE. ML:1.7 0.000151586284 0.1984 AML other m 2020-04-06T08:30:36.61
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download