Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 02-08-2020 and time 10:12:39 (UTC) in region 7 km W Accumoli (RI)

A magnitude ML 1.7 earthquake occured in region: 7 km W Accumoli (RI), on

  • 02-08-2020 10:12:39 (UTC)
  • 02-08-2020 12:12:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7090, 13.1630 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 7 667 667
Cittareale RI 10 482 1149
Norcia PG 11 4957 6106
Cascia PG 12 3217 9323
Arquata del Tronto AP 13 1178 10501
Amatrice RI 14 2657 13158
Monteleone di Spoleto PG 18 599 13757
Poggiodomo PG 19 117 13874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km NW of L'Aquila (69753 inhabitants)
45 Km W of Teramo (54892 inhabitants)
45 Km E of Terni (111501 inhabitants)
46 Km SE of Foligno (57155 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
87 Km NE of Guidonia Montecelio (88673 inhabitants)
88 Km NE of Tivoli (56533 inhabitants)
90 Km W of Pescara (121014 inhabitants)
92 Km W of Chieti (51815 inhabitants)
92 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 2020-08-02
10:12:39		 42.7093 13.1628 11 2020-11-19
12:37:03		 Bollettino Sismico Italiano INGV 83589451
Reviewed
Rev100 		ML 1.7 2020-08-02
10:12:39		 42.7095 13.1657 11 2020-08-02
10:22:36		 Sala Sismica INGV-Roma 81574851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-02 10:12:39 ± 0.03
Latitude 42.7093 ± 0.0018
Longitude 13.1628 ± 0.0024
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 83589451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 219
Semi-minor axis of confidence ellipse (meter) 138
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 260
Circular confidence region, given by single value of horizontal uncertainty (meter) 220.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 50
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.65920
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 83589451
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-07 14:22:07

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 81574851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-02 10:22:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
XK.GIZZ.HHZ. 2020-08-02T10:14:52.49 3.0 undecidable manual Sn -0.53 0
IV.SERS.HHZ. 2020-08-02T10:14:47.94 3.0 undecidable manual Sn -9.95 0
IV.ORI.HHZ. 2020-08-02T10:14:35.84 3.0 undecidable manual Sn -1.35 0
IV.LINA.HHZ. 2020-08-02T10:14:34.70 3.0 negative manual Pg 30 0
IV.PANTE.HHZ. 2020-08-02T10:14:11.27 3.0 undecidable manual Pg 20.790001 0
CR.ZAG.BHZ. 2020-08-02T10:14:05.38 3.0 undecidable manual Sn 2.35 0
IV.CAVT.HHZ. 2020-08-02T10:14:00.77 3.0 positive manual Pg 20.33 0
IV.MTTG.HHZ. 2020-08-02T10:13:55.20 3.0 undecidable manual Pn 6.31 0
IV.CRAC.EHZ. 2020-08-02T10:13:50.23 3.0 positive manual Pg 21.01 0
IV.LAV9.HNZ. 2020-08-02T10:13:40.36 3.0 undecidable manual Sg 17.459999 0
GU.ROTM.HHZ. 2020-08-02T10:13:10.35 3.0 undecidable manual Sn 1.77 0
IV.TOLF.HHZ. 2020-08-02T10:13:07.99 3.0 undecidable manual Sn -1.25 0
IV.LPEL.HHZ. 2020-08-02T10:13:06.56 3.0 undecidable manual Pg 9.1 0
MN.TRI.HHZ. 2020-08-02T10:13:00.99 3.0 positive manual Pg 6.19 0
IV.MIDA.HHZ. 2020-08-02T10:12:56.73 3.0 negative manual Pn -4.57 0
IV.MCIV.CHZ. 2020-08-02T10:12:56.30 3.0 undecidable manual Sn 2.4 0
IV.FIAM.HHZ. 2020-08-02T10:12:55.25 0.6 undecidable manual S 184 49.1175 50 0.17 46
IV.CSP1.EHZ. 2020-08-02T10:12:53.50 0.6 undecidable manual S 5 42.5241 50 0.16 47
IV.T0110.HHZ. 2020-08-02T10:12:52.28 0.3 undecidable manual P 136 73.1712 50 0.07 67
IV.FDMO.HHZ. 2020-08-02T10:12:51.90 0.6 undecidable manual S 350 36.8298 50 0.1 48
IV.TERO.HHZ. 2020-08-02T10:12:51.76 0.6 undecidable manual S 105 37.2294 50 -0.15 47
IV.RIBO.EHZ.01 2020-08-02T10:12:51.22 3.0 undecidable manual Sn 3.87 0
IV.FIAM.HHZ. 2020-08-02T10:12:48.33 0.1 undecidable manual P 184 49.1175 50 -0.17 91
IV.MC2.EHZ. 2020-08-02T10:12:48.15 0.6 undecidable manual S 5 22.5552 50 0.16 48
IV.MMO1.EHZ. 2020-08-02T10:12:48.66 0.6 undecidable manual S 32 24.9528 50 0.03 49
IV.CSP1.EHZ. 2020-08-02T10:12:47.52 0.1 undecidable manual P 5 42.5241 50 0.02 96
IV.RM33.EHZ. 2020-08-02T10:12:47.93 0.6 undecidable manual S 169 22.6551 50 -0.08 48
IV.MTRA.EHZ. 2020-08-02T10:12:47.00 0.6 undecidable manual S 74 19.7691 50 -0.25 47
IV.GAVE.EHZ. 2020-08-02T10:12:47.68 0.6 undecidable manual S 265 21.9669 50 -0.16 48
IV.LNSS.HHZ. 2020-08-02T10:12:46.06 0.6 undecidable manual S 220 15.4734 50 -0.04 50
IV.SMA1.EHZ. 2020-08-02T10:12:46.53 0.6 undecidable manual S 122 16.5723 50 0.14 48
IV.FDMO.HHZ. 2020-08-02T10:12:46.53 0.1 undecidable manual P 350 36.8298 50 -0.08 95
IV.TERO.HHZ. 2020-08-02T10:12:46.63 0.3 undecidable manual P 105 37.2294 50 -0.05 72
IV.BRMO.HHZ. 2020-08-02T10:12:45.57 3.0 negative manual Pn -6.16 0
IV.NRCA.HNZ. 2020-08-02T10:12:45.39 0.6 undecidable manual S 344 14.3745 50 -0.41 47
IV.MMO1.EHZ. 2020-08-02T10:12:44.83 0.1 negative manual P 32 24.9528 50 0.05 98
IV.GAVE.EHZ. 2020-08-02T10:12:44.36 0.1 undecidable manual P 265 21.9669 50 0.04 99
IV.MILN.HNZ. 2020-08-02T10:12:44.90 3.0 undecidable manual Pn 2.3 0
IV.RM33.EHZ. 2020-08-02T10:12:44.42 0.1 positive manual P 169 22.6551 50 0 99
IV.MC2.EHZ. 2020-08-02T10:12:44.55 0.1 undecidable manual P 5 22.5552 50 0.15 97
IV.MTRA.EHZ. 2020-08-02T10:12:43.91 0.1 undecidable manual P 74 19.7691 50 -0.07 99
IV.NRCA.HNZ. 2020-08-02T10:12:43.14 0.1 undecidable manual P 344 14.3745 50 0 100
IV.LNSS.HHZ. 2020-08-02T10:12:43.47 0.1 negative manual P 220 15.4734 50 0.15 97
IV.SMA1.EHZ. 2020-08-02T10:12:43.63 0.1 undecidable manual P 122 16.5723 50 0.14 97
IV.OSSC.HHZ. 2020-08-02T10:12:40.40 3.0 undecidable manual S -1.56 0
IV.CAPR.HNZ. 2020-08-02T10:12:40.68 3.0 negative manual Pg -1.21 0
IV.CRND.HNZ. 2020-08-02T10:12:39.91 3.0 undecidable manual Pn -6.26 0
IV.PE3.EHZ. 2020-08-02T10:12:37.76 3.0 undecidable manual Pg 2.67 0
IV.MTRZ.HNZ. 2020-08-02T10:12:28.57 3.0 undecidable manual Pn -0.8 0
IV.SFI.EHZ. 2020-08-02T10:12:27.11 3.0 undecidable manual P -3.22 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:2.1 0.001295 0.16 AML other m 2020-08-02T10:12:45.65
IV.NRCA.HHE. ML:2.1 0.001335 0.16 AML other m 2020-08-02T10:12:45.65
IV.NRCA.HHN. ML:2.1 0.001285 0.6 AML other m 2020-08-02T10:12:45.95
IV.NRCA.HNN. ML:2.0 0.0010170000000000001 0.58 AML other m 2020-08-02T10:12:45.95
IV.LNSS.HHE. ML:2.2 0.001302 0.16 AML other m 2020-08-02T10:12:46.25
IV.LNSS.HHN. ML:2.2 0.0014700000000000002 0.3 AML other m 2020-08-02T10:12:46.53
IV.SMA1.EHE. ML:1.9 0.0007015 0.42 AML other m 2020-08-02T10:12:47.08
IV.SMA1.EHN. ML:1.9 0.000728 1.58 AML other m 2020-08-02T10:12:47.16
IV.MTRA.EHE. ML:1.6 0.00029749999999999997 1.2 AML other m 2020-08-02T10:12:47.90
IV.MTRA.EHN. ML:1.4 0.0002045 0.7 AML other m 2020-08-02T10:12:47.44
IV.GAVE.EHN. ML:1.6 0.000293 0.46 AML other m 2020-08-02T10:12:48.16
IV.GAVE.EHE. ML:1.7 0.000319 0.78 AML other m 2020-08-02T10:12:48.57
IV.RM33.EHN. ML:1.7 0.00033499999999999996 1.08 AML other m 2020-08-02T10:12:48.15
IV.RM33.EHE. ML:1.7 0.00030400000000000007 1 AML other m 2020-08-02T10:12:49.93
IV.TERO.HHN. ML:1.5 0.0001315 0.22 AML other m 2020-08-02T10:12:52.74
IV.FDMO.HHN. ML:1.4 0.00009365 0.62 AML other m 2020-08-02T10:12:52.48
IV.TERO.HHE. ML:1.5 0.0001185 1.18 AML other m 2020-08-02T10:12:52.85
IV.FDMO.HHE. ML:1.4 0.00010085 1.84 AML other m 2020-08-02T10:12:53.01
IV.FIAM.HHE. ML:1.2 0.000038900000000000004 0.7 AML other m 2020-08-02T10:12:55.44
IV.FIAM.HHN. ML:1.1 0.0000362 0.9 AML other m 2020-08-02T10:12:56.18
IV.T0110.HHN. ML:1.5 0.0000498 0.72 AML other m 2020-08-02T10:13:05.12
IV.T0110.HHE. ML:1.5 0.00004475 0.56 AML other m 2020-08-02T10:13:06.58
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