Earthquake with magnitude of ML 1.2 on date 03-08-2020 and time 17:52:35 (UTC) in region 6 km W Accumoli (RI)

A magnitude ML 1.2 earthquake occured in region: 6 km W Accumoli (RI), on

  • 03-08-2020 17:52:35 (UTC)
  • 03-08-2020 19:52:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7, 13.17 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 6 667 667
Cittareale RI 10 482 1149
Norcia PG 12 4957 6106
Amatrice RI 12 2657 8763
Arquata del Tronto AP 13 1178 9941
Cascia PG 13 3217 13158
Monteleone di Spoleto PG 19 599 13757
Poggiodomo PG 20 117 13874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km NW of L'Aquila (69753 inhabitants)
44 Km W of Teramo (54892 inhabitants)
46 Km E of Terni (111501 inhabitants)
48 Km SE of Foligno (57155 inhabitants)
78 Km SE of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
88 Km NE of Tivoli (56533 inhabitants)
89 Km W of Pescara (121014 inhabitants)
90 Km W of Chieti (51815 inhabitants)
93 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
Reviewed
Rev100
ML 1.2 2020-08-03
17:52:35
42.7 13.17 11 2020-08-03
17:59:17
Sala Sismica INGV-Roma 81620391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-03 17:52:35 ± 0.06
Latitude 42.70 ± 0.00
Longitude 13.17 ± 0.01
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 81620391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 510
Semi-minor axis of confidence ellipse (meter) 180
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 510
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.38491
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.5
Num. used stations 13
Type of magnitude ML
Reference to an origin 81620391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-03 17:59:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.BLANC.HHZ. 2020-08-03T17:54:17.17 3.0 undecidable manual Pg 22.77 0
MN.KLV.HHZ. 2020-08-03T17:54:14.27 3.0 positive manual Pn -6.11 0
IV.SENA.HHZ. 2020-08-03T17:54:13.61 3.0 undecidable manual Sg 11.47 0
IV.SERS.HHZ. 2020-08-03T17:54:07.77 3.0 undecidable manual Sn -6.23 0
XK.GIZZ.HHZ. 2020-08-03T17:54:01.38 3.0 undecidable manual Sn -8.61 0
AC.KBN.HHZ. 2020-08-03T17:54:00.61 3.0 undecidable manual Pg 9.5 0
AC.VLO.HHZ. 2020-08-03T17:53:54.58 3.0 undecidable manual Pg 15.4 0
GU.GRAM.HHZ. 2020-08-03T17:53:52.98 3.0 undecidable manual Sn -5.64 0
IV.PZUN.HHZ. 2020-08-03T17:53:41.81 3.0 undecidable manual Sg 8.34 0
GU.GSCL.HHZ. 2020-08-03T17:53:41.74 3.0 undecidable manual Sn -7.82 0
IT.FIE.HGZ. 2020-08-03T17:53:38.39 3.0 undecidable manual Sg 7.01 0
IV.SEI.HHZ. 2020-08-03T17:53:35.06 3.0 undecidable manual Sn 0.08 0
IV.IST3.HHZ. 2020-08-03T17:53:29.38 3.0 negative manual Pg 6.47 0
TV.SF04.EHZ. 2020-08-03T17:53:20.24 3.0 undecidable manual Sg 7.76 0
IV.CPGN.EHZ. 2020-08-03T17:53:17.22 3.0 undecidable manual Sn -2.86 0
CR.STON.BHZ. 2020-08-03T17:53:17.42 3.0 positive manual Pg 1.21 0
IV.ARVD.HHZ. 2020-08-03T17:53:16.31 3.0 undecidable manual Sg 7.44 0
IV.CET2.HHZ. 2020-08-03T17:53:10.50 3.0 undecidable manual Pn -7.04 0
IV.SSFR.HNZ. 2020-08-03T17:53:02.26 3.0 undecidable manual Sn -6.2 0
IV.MRLC.HHZ. 2020-08-03T17:53:01.43 3.0 undecidable manual Pg 0.07 0
IV.GIGS.HHZ. 2020-08-03T17:52:49.27 0.6 undecidable manual S 130 0.3849 90 -0.1 63
IV.FDMO.HHZ. 2020-08-03T17:52:48.12 0.6 undecidable manual S 349 0.339 90 0.11 63
IV.CPOZ.HHZ. 2020-08-03T17:52:47.58 3.0 negative manual Pn -5.27 0
IV.MMO1.EHZ. 2020-08-03T17:52:44.69 0.6 undecidable manual S 30 0.2257 91 0.04 65
IV.GIGS.HHZ. 2020-08-03T17:52:43.14 0.3 undecidable manual P 130 0.3849 90 -0.37 89
IV.RM33.EHZ. 2020-08-03T17:52:43.73 0.6 undecidable manual S 171 0.1961 91 -0.04 65
IV.LNSS.HHZ. 2020-08-03T17:52:42.17 0.6 undecidable manual S 225 0.1403 93 0.05 66
IV.FDMO.HHZ. 2020-08-03T17:52:42.82 0.3 undecidable manual P 349 0.339 90 0.09 95
IV.SMA1.EHZ. 2020-08-03T17:52:42.06 0.6 undecidable manual S 121 0.1385 93 -0.01 66
IV.VIVA.HHZ. 2020-08-03T17:52:41.93 3.0 negative manual P -0.48 0
IV.NRCA.HHZ. 2020-08-03T17:52:41.74 0.6 undecidable manual S 341 0.1376 94 -0.3 63
IV.RM33.EHZ. 2020-08-03T17:52:40.26 0.3 undecidable manual P 171 0.1961 91 -0.02 98
IV.MMO1.EHZ. 2020-08-03T17:52:40.80 0.3 undecidable manual P 30 0.2257 91 0.02 98
IV.LNSS.HHZ. 2020-08-03T17:52:39.44 0.3 undecidable manual P 225 0.1403 93 0.12 99
IV.SMA1.EHZ. 2020-08-03T17:52:39.66 0.3 undecidable manual P 121 0.1385 93 0.37 92
IV.NRCA.HHZ. 2020-08-03T17:52:39.26 0.3 undecidable manual P 341 0.1376 94 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.3 0.0001759494 0.0896 AML other m 2020-08-03T17:52:42.22
IV.NRCA.HHN. ML:1.2 0.0001277196 0.1152 AML other m 2020-08-03T17:52:42.34
IV.NRCA.HNE. ML:1.2 0.0001588234 0.0896 AML other m 2020-08-03T17:52:42.27
IV.NRCA.HNN. ML:1.2 0.000133819785 0.4096 AML other m 2020-08-03T17:52:41.22
IV.LNSS.HHE. ML:1.3 0.0001617698 0.1792 AML other m 2020-08-03T17:52:42.53
IV.LNSS.HHN. ML:1.3 0.000158876 0.1408 AML other m 2020-08-03T17:52:42.50
IV.LNSS.HNE. ML:1.3 0.000158320745 0.192 AML other m 2020-08-03T17:52:42.53
IV.SMA1.EHE. ML:1 9.14432E-5 0.2432 AML other m 2020-08-03T17:52:42.69
IV.SMA1.EHN. ML:0.9 6.6263975E-5 0.3584 AML other m 2020-08-03T17:52:42.66
IV.RM33.EHE. ML:0.7 3.7470365E-5 0.1792 AML other m 2020-08-03T17:52:44.51
IV.RM33.EHN. ML:0.7 3.7307695E-5 0.2304 AML other m 2020-08-03T17:52:43.90
IV.IST3.HHE. ML:4.6 0.0013069125 0.4992 AML other m 2020-08-03T17:53:58.92
IV.IST3.HHN. ML:4.6 0.0015985675 0.6144 AML other m 2020-08-03T17:53:58.05
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