Earthquake with magnitude of ML 0.6 on date 11-08-2020 and time 03:59:23 (Italy) in region 2 km SW Accumoli (RI)

A magnitude ML 0.6 earthquake occured in region: 2 km SW Accumoli (RI), on

  • 11-08-2020 01:59:23 (UTC)
  • 11-08-2020 03:59:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.68, 13.23 at 12 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 2 667 667
Amatrice RI 8 2657 3324
Cittareale RI 9 482 3806
Arquata del Tronto AP 12 1178 4984
Norcia PG 16 4957 9941
Montereale AQ 18 2581 12522
Acquasanta Terme AP 18 2916 15438
Cascia PG 18 3217 18655
Campotosto AQ 18 542 19197
Capitignano AQ 19 665 19862
Montegallo AP 20 523 20385

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
40 Km NW of L'Aquila (69753 inhabitants)
49 Km E of Terni (111501 inhabitants)
52 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
86 Km W of Chieti (51815 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
87 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
Reviewed
Rev100
ML 0.6 2020-08-11
01:59:23
42.68 13.23 12 2020-08-11
02:15:35
Sala Sismica INGV-Roma 81862611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-11 01:59:23 ± 0.12
Latitude 42.68 ± 0.01
Longitude 13.23 ± 0.01
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81862611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 709
Semi-minor axis of confidence ellipse (meter) 333
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 25
Circular confidence region, given by single value of horizontal uncertainty (meter) 710
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.69158
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 12
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 81862611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-11 02:15:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.GSCL.HHZ. 2020-08-11T02:00:44.22 3.0 undecidable manual Sg 7.51 0
IV.MTMR.HNZ. 2020-08-11T02:00:31.64 3.0 undecidable manual Sg 1.98 0
IV.FIR.HHZ. 2020-08-11T02:00:19.79 3.0 undecidable manual Sn 1.06 0
IV.CRTC.HHZ. 2020-08-11T02:00:01.20 3.0 undecidable manual S -0.94 0
IV.RCAV.EHZ. 2020-08-11T01:59:52.71 3.0 undecidable manual S -1.8 0
IV.ROSPO.HHZ. 2020-08-11T01:59:47.29 3.0 undecidable manual P -1.59 0
IV.MF5.EHZ. 2020-08-11T01:59:36.95 0.3 undecidable manual S 29 0.348 92 0.46 67
IV.SRES.HHZ. 2020-08-11T01:59:36.66 1.0 undecidable manual P 230 0.6916 91 -0.3 21
IV.TERO.HHZ. 2020-08-11T01:59:34.15 0.6 undecidable manual S 102 0.2842 93 -0.45 46
IV.MC2.EHZ. 2020-08-11T01:59:33.15 0.6 undecidable manual S 353 0.2284 94 0.2 48
IV.GAVE.EHZ. 2020-08-11T01:59:33.33 0.6 undecidable manual S 272 0.2437 93 -0.07 49
IV.MMO1.EHZ. 2020-08-11T01:59:32.54 0.6 undecidable manual S 19 0.2275 94 -0.37 47
IV.RM33.EHZ. 2020-08-11T01:59:31.41 0.6 undecidable manual S 183 0.1754 97 0.03 51
IV.MF5.EHZ. 2020-08-11T01:59:31.35 0.6 negative manual P 29 0.348 92 0.26 47
IV.NRCA.HHZ. 2020-08-11T01:59:30.55 0.1 undecidable manual P 331 0.17 98 2.5 23
IV.NRCA.HHZ. 2020-08-11T01:59:30.48 0.6 undecidable manual S 331 0.17 98 -0.75 42
IV.LNSS.HNZ. 2020-08-11T01:59:30.91 0.6 undecidable manual S 239 0.1592 100 0.01 51
IV.SMA1.EHZ. 2020-08-11T01:59:29.17 0.6 undecidable manual S 124 0.0962 122 0 51
IV.GAVE.EHZ. 2020-08-11T01:59:29.07 0.6 undecidable manual P 272 0.2437 93 -0.23 48
IV.TERO.HHZ. 2020-08-11T01:59:29.88 0.6 undecidable manual P 102 0.2842 93 -0.12 49
IV.T1299.HNZ. 2020-08-11T01:59:28.58 0.6 undecidable manual S 141 0.0648 139 0.13 50
IV.RM33.EHZ. 2020-08-11T01:59:28.20 0.6 undecidable manual P 183 0.1754 97 0.06 51
IV.MC2.EHZ. 2020-08-11T01:59:28.88 0.1 undecidable manual P 353 0.2284 94 -0.16 98
IV.MMO1.EHZ. 2020-08-11T01:59:28.70 0.6 undecidable manual P 19 0.2275 94 -0.32 47
IV.LNSS.HNZ. 2020-08-11T01:59:27.78 0.1 undecidable manual P 239 0.1592 100 -0.08 100
IV.MTRA.EHZ. 2020-08-11T01:59:27.39 0.6 positive manual P 60 0.1448 103 -0.23 49
IV.T1299.HNZ. 2020-08-11T01:59:26.64 0.1 undecidable manual P 141 0.0648 139 0.19 100
IV.SMA1.EHZ. 2020-08-11T01:59:26.94 1.0 positive manual P 124 0.0962 122 0.08 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:0.6 4.425E-5 0.32 AML other m 2020-08-11T01:59:29.71
IV.SMA1.EHE. ML:0.6 4.125E-5 0.34 AML other m 2020-08-11T01:59:29.79
IV.NRCA.HHN. ML:1.5 0.000216 0.1 AML other m 2020-08-11T01:59:30.63
IV.NRCA.HHE. ML:1.8 0.0004445 0.12 AML other m 2020-08-11T01:59:30.76
IV.RM33.EHN. ML:0.5 2.485E-5 0.32 AML other m 2020-08-11T01:59:31.64
IV.RM33.EHE. ML:0.5 2.265E-5 1.54 AML other m 2020-08-11T01:59:32.89
IV.GAVE.EHE. ML:0.8 2.855E-5 0.74 AML other m 2020-08-11T01:59:33.89
IV.GAVE.EHN. ML:0.9 3.93E-5 0.84 AML other m 2020-08-11T01:59:33.72
IV.TERO.HHE. ML:0.4 1.17E-5 0.66 AML other m 2020-08-11T01:59:34.79
IV.TERO.HHN. ML:0.5 1.41E-5 0.7 AML other m 2020-08-11T01:59:34.61
IV.MTMR.EHE. ML:3.6 0.0007885 0.42 AML other m 2020-08-11T02:00:32.70
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