Earthquake with magnitude of ML 0.9 on date 17-09-2020 and time 06:35:26 (UTC) in region 7 km NW Accumoli (RI)

A magnitude ML 0.9 earthquake occured in region: 7 km NW Accumoli (RI), on

  • 17-09-2020 06:35:26 (UTC)
  • 17-09-2020 08:35:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.74, 13.18 at 10 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 7 667 667
Norcia PG 9 4957 5624
Arquata del Tronto AP 10 1178 6802
Cittareale RI 14 482 7284
Cascia PG 14 3217 10501
Amatrice RI 15 2657 13158
Montegallo AP 17 523 13681
Castelsantangelo sul Nera MC 17 281 13962
Acquasanta Terme AP 19 2916 16878
Preci PG 19 724 17602

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Teramo (54892 inhabitants)
46 Km SE of Foligno (57155 inhabitants)
47 Km NW of L'Aquila (69753 inhabitants)
48 Km E of Terni (111501 inhabitants)
76 Km SE of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
90 Km W of Pescara (121014 inhabitants)
91 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km W of Chieti (51815 inhabitants)
92 Km NE of Tivoli (56533 inhabitants)
95 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 0.9 2020-09-17
06:35:26
42.74 13.18 10 2020-09-17
06:41:40
Sala Sismica INGV-Roma 82975281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-17 06:35:26 ± 0.11
Latitude 42.74 ± 0.01
Longitude 13.18 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82975281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 515
Semi-minor axis of confidence ellipse (meter) 418
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 157
Circular confidence region, given by single value of horizontal uncertainty (meter) 520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.38761
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 82975281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-17 06:41:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
XK.ALB1.HHZ. 2020-09-17T06:37:04.99 3.0 undecidable manual Sg 18.959999 0
XK.GIZZ.HHZ. 2020-09-17T06:37:02.09 3.0 undecidable manual Sg 21.4 0
CR.STON.BHZ. 2020-09-17T06:36:56.40 3.0 undecidable manual Sn -1.04 0
IV.MBAL.EHZ. 2020-09-17T06:36:53.32 3.0 undecidable manual Sn -9.99 0
IV.IMI.HHZ. 2020-09-17T06:36:49.89 3.0 undecidable manual Sn -4.83 0
SI.BOSI.HHZ. 2020-09-17T06:36:37.64 3.0 negative manual Pg 16.889999 0
IV.BRSN.HNZ. 2020-09-17T06:36:34.61 3.0 undecidable manual Sg 6.84 0
IV.ISPIC.HNZ. 2020-09-17T06:36:32.57 3.0 undecidable manual Pg 20.110001 0
MN.BNI.HHZ. 2020-09-17T06:36:31.95 3.0 negative manual Pn 7.45 0
GU.POPM.HHZ. 2020-09-17T06:36:31.38 3.0 undecidable manual Sg 4.32 0
CR.STON.BHZ. 2020-09-17T06:36:13.46 3.0 undecidable manual Pn 6.53 0
IV.PE3.EHZ. 2020-09-17T06:36:10.24 3.0 undecidable manual Sg -3.59 0
ST.GAGG.HHZ. 2020-09-17T06:36:09.01 3.0 negative manual Pn -6.79 0
IV.NDIM.HNZ. 2020-09-17T06:36:09.70 3.0 positive manual Pg 9.54 0
OT.OT05.EHZ. 2020-09-17T06:36:09.17 3.0 undecidable manual Sn -4.15 0
IV.RIBO.EHZ.01 2020-09-17T06:35:59.49 3.0 undecidable manual Sn -2.06 0
IV.PTRJ.HNZ. 2020-09-17T06:35:58.54 3.0 undecidable manual Sg 4.66 0
IV.NOCI.HHZ. 2020-09-17T06:35:57.29 3.0 positive manual Pn 0.63 0
IV.CMPR.HHZ. 2020-09-17T06:35:54.26 3.0 undecidable manual Pg 13.67 0
IV.LRP.EHZ. 2020-09-17T06:35:46.28 3.0 undecidable manual Sg 5.23 0
IV.RIBO.EHZ.01 2020-09-17T06:35:39.82 3.0 undecidable manual Pg 4.29 0
IV.TERO.HHZ. 2020-09-17T06:35:38.90 0.6 undecidable manual S 111 0.331 50 0.08 48
IV.RCAV.EHZ. 2020-09-17T06:35:36.58 3.0 undecidable manual Sg 0 0
IV.GAVE.EHZ. 2020-09-17T06:35:35.09 0.6 undecidable manual S 257 0.2185 112 -0.25 47
IV.MMO1.EHZ. 2020-09-17T06:35:34.07 0.6 undecidable manual S 34 0.1889 115 -0.22 48
IV.LNSS.HHZ. 2020-09-17T06:35:34.07 0.3 undecidable manual S 217 0.1745 117 0.27 71
IV.SAP2.EHZ. 2020-09-17T06:35:34.50 0.3 positive manual P 24 0.3876 50 0.01 72
IV.SMA1.EHZ. 2020-09-17T06:35:33.57 0.6 undecidable manual S 135 0.1574 119 0.35 47
IV.TERO.HHZ. 2020-09-17T06:35:33.47 0.1 undecidable manual P 111 0.331 50 -0.05 96
IV.MC2.EHZ. 2020-09-17T06:35:33.64 0.6 undecidable manual S 1 0.1691 117 0.03 50
IV.MTRA.EHZ. 2020-09-17T06:35:33.06 0.6 undecidable manual S 85 0.1565 119 -0.13 49
IV.GAVE.EHZ. 2020-09-17T06:35:31.36 0.1 undecidable manual P 257 0.2185 112 -0.15 96
IV.NRCA.HHZ. 2020-09-17T06:35:31.33 0.6 undecidable manual S 331 0.1043 130 -0.21 48
IV.MC2.EHZ. 2020-09-17T06:35:31.02 0.1 undecidable manual P 1 0.1691 117 0.51 90
IV.MTRA.EHZ. 2020-09-17T06:35:30.26 0.1 undecidable manual P 85 0.1565 119 -0.01 100
IV.MMO1.EHZ. 2020-09-17T06:35:30.81 0.1 undecidable manual P 34 0.1889 115 -0.09 98
IV.LNSS.HHZ. 2020-09-17T06:35:30.58 0.1 undecidable manual P 217 0.1745 117 -0.04 99
IV.NRCA.HHZ. 2020-09-17T06:35:29.41 0.1 positive manual P 331 0.1043 130 0.1 99
IV.SMA1.EHZ. 2020-09-17T06:35:27.68 0.6 negative manual P 135 0.1574 119 -2.6 9
IV.LRP.EHZ. 2020-09-17T06:35:24.28 3.0 undecidable manual P 0.27 0
IV.VVLD.HHZ. 2020-09-17T06:35:23.33 3.0 positive manual P -2.29 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1 0.0001265 1.5 AML other m 2020-09-17T06:35:31.16
IV.NRCA.HHE. ML:1.2 0.0001935 0.14 AML other m 2020-09-17T06:35:32.07
IV.MTRA.EHE. ML:1 8.775E-5 0.4 AML other m 2020-09-17T06:35:33.38
IV.MTRA.EHN. ML:0.8 6.225E-5 0.3 AML other m 2020-09-17T06:35:33.85
IV.LNSS.HHN. ML:0.8 4.955E-5 0.28 AML other m 2020-09-17T06:35:34.28
IV.LNSS.HHE. ML:0.8 5.0E-5 0.96 AML other m 2020-09-17T06:35:34.64
IV.TERO.HHE. ML:0.8 2.55E-5 0.34 AML other m 2020-09-17T06:35:39.38
IV.TERO.HHN. ML:0.9 2.99E-5 0.94 AML other m 2020-09-17T06:35:40.55
GU.POPM.HHN. ML:2.4 4.38E-5 0.08 AML other m 2020-09-17T06:36:35.37
GU.POPM.HHE. ML:2.3 3.9E-5 0.12 AML other m 2020-09-17T06:36:44.02
IV.NDIM.HNN. ML:4.1 0.001465 0.3 AML other m 2020-09-17T06:37:11.15
IV.NDIM.HHN. ML:3.9 0.0010715 1.46 AML other m 2020-09-17T06:37:17.23
IV.NDIM.HHE. ML:4.1 0.001665 0.1 AML other m 2020-09-17T06:37:18.32
IV.NDIM.HNE. ML:4.1 0.001525 0.92 AML other m 2020-09-17T06:37:18.77
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