Earthquake with magnitude of ML 1.0 on date 23-09-2020 and time 18:05:28 (UTC) in region 5 km W Accumoli (RI)

A magnitude ML 1.0 earthquake occured in region: 5 km W Accumoli (RI), on

  • 23-09-2020 18:05:28 (UTC)
  • 23-09-2020 20:05:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.71, 13.19 at 16 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 5 667 667
Cittareale RI 10 482 1149
Arquata del Tronto AP 12 1178 2327
Amatrice RI 12 2657 4984
Norcia PG 12 4957 9941
Cascia PG 14 3217 13158
Montegallo AP 19 523 13681
Acquasanta Terme AP 19 2916 16597

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km W of Teramo (54892 inhabitants)
43 Km NW of L'Aquila (69753 inhabitants)
47 Km E of Terni (111501 inhabitants)
48 Km SE of Foligno (57155 inhabitants)
79 Km SE of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
87 Km NE of Guidonia Montecelio (88673 inhabitants)
88 Km W of Pescara (121014 inhabitants)
89 Km NE of Tivoli (56533 inhabitants)
90 Km W of Chieti (51815 inhabitants)
94 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 1.0 2020-09-23
18:05:28
42.71 13.19 16 2020-09-23
18:15:50
Sala Sismica INGV-Roma 83167051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-23 18:05:28 ± 0.25
Latitude 42.71 ± 0.01
Longitude 13.19 ± 0.01
Depth (km) 16 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83167051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1070
Semi-minor axis of confidence ellipse (meter) 351
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 83
Circular confidence region, given by single value of horizontal uncertainty (meter) 1070
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.31656
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 17
Type of magnitude ML
Reference to an origin 83167051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-23 18:15:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SARZ.HHZ. 2020-09-23T18:07:19.37 3.0 undecidable manual Sg 14.43 0
IV.SPS2.HHZ. 2020-09-23T18:07:17.90 3.0 undecidable manual Sn -2.01 0
IV.GMB.BHZ. 2020-09-23T18:06:59.60 3.0 undecidable manual Pg 18.379999 0
IV.CMPR.HHZ. 2020-09-23T18:06:57.72 3.0 undecidable manual Sg 9.47 0
IV.PLLN.EHZ. 2020-09-23T18:06:43.99 3.0 positive manual Pn 5.5 0
GU.GSCL.HHZ. 2020-09-23T18:06:33.90 3.0 undecidable manual Sn 0.13 0
IV.ZCCA.HHZ. 2020-09-23T18:06:32.78 3.0 undecidable manual Sg 4.13 0
IV.MILN.HHZ. 2020-09-23T18:06:31.92 3.0 undecidable manual Pg 7.49 0
IV.GATE.HHZ. 2020-09-23T18:06:29.98 3.0 undecidable manual Sg 9.24 0
IV.SARZ.HHZ. 2020-09-23T18:06:23.58 3.0 undecidable manual Pn 1.78 0
IV.CADC.HNZ. 2020-09-23T18:06:19.83 3.0 undecidable manual Pn 1.7 0
IV.SLCN.HHZ. 2020-09-23T18:06:13.42 3.0 undecidable manual Pn -0.16 0
IV.CMPR.HHZ. 2020-09-23T18:06:10.83 3.0 undecidable manual Pn -1.59 0
IV.MCRV.HHZ. 2020-09-23T18:06:05.64 3.0 undecidable manual Pn -0.72 0
IT.RMVT.HGZ. 2020-09-23T18:05:58.24 3.0 undecidable manual S -1.18 0
IV.BRSN.EHZ. 2020-09-23T18:05:52.31 3.0 positive manual Pn -1.71 0
IV.TERO.HHZ. 2020-09-23T18:05:40.01 0.3 undecidable manual S 105 0.3166 101 -0.33 68
IV.MC2.EHN. 2020-09-23T18:05:37.56 0.3 undecidable manual S 360 0.2032 112 0.43 68
IV.RM33.EHZ. 2020-09-23T18:05:36.81 0.3 undecidable manual S 175 0.1996 112 -0.21 71
IV.LNSS.HHZ. 2020-09-23T18:05:35.55 0.3 undecidable manual S 226 0.152 122 -0.2 72
IV.NRCA.HHZ. 2020-09-23T18:05:35.28 0.3 undecidable manual S 336 0.1376 125 -0.12 74
IV.SMA1.EHZ. 2020-09-23T18:05:35.36 0.6 undecidable manual S 126 0.1322 127 0.08 50
IV.MTRA.HNN. 2020-09-23T18:05:35.76 0.6 undecidable manual S 72 0.1601 120 -0.2 48
IV.TERO.HHZ. 2020-09-23T18:05:35.61 0.1 undecidable manual P 105 0.3166 101 0.31 91
IV.T1299.EHE. 2020-09-23T18:05:34.33 0.6 undecidable manual S 137 0.0998 137 -0.24 48
IV.RM33.EHZ. 2020-09-23T18:05:33.41 0.1 undecidable manual P 175 0.1996 112 0.03 99
IV.SMA1.EHZ. 2020-09-23T18:05:32.79 0.6 undecidable manual P 126 0.1322 127 0.42 46
IV.MTRA.HNN. 2020-09-23T18:05:32.77 0.1 undecidable manual P 72 0.1601 120 0.01 100
IV.LNSS.HHZ. 2020-09-23T18:05:32.80 0.1 undecidable manual P 226 0.152 122 0.15 97
IV.MC2.EHN. 2020-09-23T18:05:32.48 0.1 undecidable manual P 360 0.2032 112 -0.96 74
IV.T1299.EHE. 2020-09-23T18:05:32.20 0.1 undecidable manual P 137 0.0998 137 0.24 97
IV.NRCA.HHZ. 2020-09-23T18:05:32.74 0.1 undecidable manual P 336 0.1376 125 0.3 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:1.2 3.435E-5 0.7 AML other m 2020-09-23T18:05:44.43
IV.NRCA.HHE. ML:1 7.087894E-5 0.1024 AML other m 2020-09-23T18:05:35.74
IV.NRCA.HHN. ML:0.7 3.771831E-5 0.0768 AML other m 2020-09-23T18:05:36.08
IV.NRCA.HNE. ML:0.9 6.7142305E-5 0.576 AML other m 2020-09-23T18:05:35.75
IV.NRCA.HNN. ML:1.3 0.000165806195 0.6016 AML other m 2020-09-23T18:05:36.12
IV.SMA1.EHE. ML:0.5 2.5244085E-5 0.2688 AML other m 2020-09-23T18:05:36.54
IV.SMA1.EHN. ML:0.6 3.244029E-5 1.0752 AML other m 2020-09-23T18:05:42.22
IV.LNSS.HNE. ML:1.3 0.00013194045 0.8448 AML other m 2020-09-23T18:05:39.62
IV.LNSS.HNN. ML:1 6.39332E-5 0.1536 AML other m 2020-09-23T18:05:35.66
IV.LNSS.HHE. ML:1.2 0.000100828405 0.1536 AML other m 2020-09-23T18:05:35.71
IV.LNSS.HHN. ML:1.2 0.00010151949 0.2176 AML other m 2020-09-23T18:05:36.01
IV.RM33.HNE. ML:1.3 0.00012739788 0.7808 AML other m 2020-09-23T18:05:43.35
IV.RM33.HNN. ML:1.1 8.154197E-5 0.4352 AML other m 2020-09-23T18:05:41.38
IV.RM33.EHE. ML:0.5 2.163461E-5 0.6016 AML other m 2020-09-23T18:05:37.31
IV.RM33.EHN. ML:0.5 2.09466235E-5 0.1024 AML other m 2020-09-23T18:05:37.56
IV.TERO.HHE. ML:0.4 1.0939884E-5 0.7296 AML other m 2020-09-23T18:05:52.55
IV.TERO.HHN. ML:0.4 9.471836E-6 0.4352 AML other m 2020-09-23T18:05:48.12
IV.TERO.HNE. ML:1.4 9.8705045E-5 0.512 AML other m 2020-09-23T18:05:42.77
IV.TERO.HNN. ML:1.6 0.0001397774 0.9344 AML other m 2020-09-23T18:05:37.55
IV.BRSN.EHN. ML:3.1 0.0004015736 0.192 AML other m 2020-09-23T18:05:59.92
IV.MCRV.HHE. ML:2 1.29895548E-5 0.5504 AML other m 2020-09-23T18:06:33.81
IV.MCRV.HHN. ML:2 1.29456625E-5 0.4992 AML other m 2020-09-23T18:06:45.73
IV.CMPR.HHE. ML:2.8 6.7128995E-5 0.064 AML other m 2020-09-23T18:07:33.98
IV.CMPR.HHN. ML:3 0.00011739433 0.064 AML other m 2020-09-23T18:07:33.98
IV.SLCN.HNE. ML:4.1 0.00137298485 0.7168 AML other m 2020-09-23T18:07:10.13
IV.SLCN.HNN. ML:4.1 0.0013964947 0.7168 AML other m 2020-09-23T18:07:10.13
IV.SLCN.HHE. ML:2.6 4.111426E-5 0.4608 AML other m 2020-09-23T18:07:10.54
IV.SLCN.HHN. ML:2.6 4.1089585E-5 1.0496 AML other m 2020-09-23T18:07:02.00
IV.CADC.HNE. ML:3.5 0.00021432925 0.5376 AML other m 2020-09-23T18:06:39.38
IV.CADC.HNN. ML:3.5 0.00021675689 0.0768 AML other m 2020-09-23T18:07:27.13
IV.SARZ.HNE. ML:3.6 0.00017913055 0.8704 AML other m 2020-09-23T18:07:43.83
IV.SARZ.HNN. ML:3.6 0.0001959014 0.9344 AML other m 2020-09-23T18:07:40.10
IV.SARZ.HHE. ML:3.3 9.8283925E-5 0.0768 AML other m 2020-09-23T18:07:24.95
IV.SARZ.HHN. ML:3.6 0.00020248235 0.0896 AML other m 2020-09-23T18:07:24.90
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