Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 30-11-2020 and time 04:53:21 (Italy) in region 5 km N Accumoli (RI)

A magnitude ML 0.9 earthquake occured in region: 5 km N Accumoli (RI), on

  • 30-11-2020 03:53:21 (UTC)
  • 30-11-2020 04:53:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7370, 13.2610 at 12 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.

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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
Arquata del Tronto AP 5 1178 1845
Amatrice RI 12 2657 4502
Acquasanta Terme AP 13 2916 7418
Montegallo AP 13 523 7941
Norcia PG 15 4957 12898
Cittareale RI 16 482 13380
Montemonaco AP 19 604 13984
Valle Castellana TE 19 977 14961
Castelsantangelo sul Nera MC 20 281 15242

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km W of Teramo (54892 inhabitants)
44 Km N of L'Aquila (69753 inhabitants)
52 Km E of Foligno (57155 inhabitants)
54 Km E of Terni (111501 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
84 Km W of Pescara (121014 inhabitants)
86 Km NW of Chieti (51815 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
100 Km S of Ancona (100861 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 0.9 2020-11-30
03:53:21		 42.7373 13.2613 12 2021-02-26
14:56:09		 Bollettino Sismico Italiano INGV 85174821
Reviewed
Rev100 		ML 1.3 2020-11-30
03:53:21		 42.7428 13.2682 11 2020-11-30
03:57:13		 Sala Sismica INGV-Roma 85099111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-30 03:53:21 ± 0.06
Latitude 42.7373 ± 0.0027
Longitude 13.2613 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85174821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 360
Semi-minor axis of confidence ellipse (meter) 154
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 63
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.10072
Epicentral distance of station farthest from the epicenter (degree) 0.53690
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 85174821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-03 12:12:59

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 85099111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-30 03:57:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHE. 2020-11-30T03:53:34.82 0.3 undecidable manual S 316 41.5251 91 -0.08 70
IV.CSP1.EHZ. 2020-11-30T03:53:34.52 0.6 undecidable manual S 353 39.627 91 0.13 47
IV.FDMO.HHZ. 2020-11-30T03:53:33.32 0.3 undecidable manual S 337 36.0417 92 -0.13 70
IV.GUMA.HNN. 2020-11-30T03:53:33.94 0.3 undecidable manual S 9 36.6411 92 0.35 67
IV.FEMA.HNE. 2020-11-30T03:53:32.04 0.6 undecidable manual S 325 30.3474 92 0.13 48
IV.ASSB.HHN. 2020-11-30T03:53:32.33 0.6 undecidable manual P 305 59.5959 91 0.37 43
IV.TERO.HHZ. 2020-11-30T03:53:31.72 0.3 undecidable manual S 114 30.6471 92 -0.29 69
IV.LNSS.HHZ. 2020-11-30T03:53:30.28 0.3 undecidable manual S 230 23.3544 93 0.21 72
IV.CAMP.HHZ. 2020-11-30T03:53:30.48 0.3 undecidable manual S 152 25.3524 93 -0.12 72
IV.OFFI.HHE. 2020-11-30T03:53:29.92 0.3 undecidable manual P 57 40.9257 91 0.83 56
IV.MC2.EHZ. 2020-11-30T03:53:29.12 0.3 undecidable manual S 343 20.1687 95 -0.1 73
IV.CESI.HHE. 2020-11-30T03:53:29.19 0.3 undecidable manual P 316 41.5251 91 0.01 72
IV.MMO1.EHZ. 2020-11-30T03:53:28.62 0.3 undecidable manual S 16 18.7701 96 -0.21 72
IV.GUMA.HNN. 2020-11-30T03:53:28.39 0.3 undecidable manual P 9 36.6411 92 -0.03 72
IV.FDMO.HHZ. 2020-11-30T03:53:28.20 0.3 undecidable manual P 337 36.0417 92 -0.14 70
IV.CSP1.EHZ. 2020-11-30T03:53:28.75 0.3 undecidable manual P 353 39.627 91 -0.14 70
IV.MF5.EHN. 2020-11-30T03:53:28.07 0.3 undecidable manual P 30 32.1456 92 0.34 68
IV.TERO.HHZ. 2020-11-30T03:53:27.29 0.3 undecidable manual P 114 30.6471 92 -0.22 70
IV.T1299.EHE. 2020-11-30T03:53:27.26 0.3 undecidable manual S 172 11.5773 117 0.27 72
IV.FEMA.HNE. 2020-11-30T03:53:27.23 0.1 undecidable manual P 325 30.3474 92 -0.22 93
IV.SMA1.EHZ. 2020-11-30T03:53:27.24 0.3 undecidable manual S 153 13.2756 110 -0.17 72
IV.NRCA.HHZ. 2020-11-30T03:53:27.81 0.3 undecidable manual S 312 16.0728 101 -0.31 70
IV.LNSS.HHZ. 2020-11-30T03:53:26.44 0.1 undecidable manual P 230 23.3544 93 0.05 99
IV.CAMP.HHZ. 2020-11-30T03:53:26.62 0.3 undecidable manual P 152 25.3524 93 -0.08 72
IV.MTRA.EHZ. 2020-11-30T03:53:26.62 0.3 undecidable manual S 79 11.1777 119 -0.29 71
IV.NRCA.HHZ. 2020-11-30T03:53:25.20 0.3 undecidable manual P 312 16.0728 101 -0.06 74
IV.MMO1.EHZ. 2020-11-30T03:53:25.62 0.3 undecidable manual P 16 18.7701 96 -0.06 74
IV.MC2.EHZ. 2020-11-30T03:53:25.89 0.3 undecidable manual P 343 20.1687 95 -0.01 74
IV.SMA1.EHZ. 2020-11-30T03:53:24.92 0.3 undecidable manual P 153 13.2756 110 0.07 75
IV.MTRA.EHZ. 2020-11-30T03:53:24.60 0.1 positive manual P 79 11.1777 119 0.04 100
IV.T1299.EHE. 2020-11-30T03:53:24.90 0.3 undecidable manual P 172 11.5773 117 0.29 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:1.1 0.000123 0.48 AML other m 2020-11-30T03:53:27.46
IV.SMA1.EHN. ML:0.8 0.00005419905 0.64 AML other m 2020-11-30T03:53:27.55
IV.SMA1.EHE. ML:0.5 0.00003046711 2.0608 AML other m 2020-11-30T03:53:26.76
IV.LNSS.HHE. ML:0.7 0.00002877242 1.5584 AML other m 2020-11-30T03:53:30.62
IV.LNSS.HHN. ML:0.8 0.000037872370000000005 1.1616 AML other m 2020-11-30T03:53:30.84
IV.TERO.HHN. ML:1.2 0.00006810310999999999 1.2992 AML other m 2020-11-30T03:53:31.74
IV.TERO.HHE. ML:0.6 0.00001938524 0.32 AML other m 2020-11-30T03:53:32.21
IV.FDMO.HHE. ML:0.9 0.00003130302 1.44 AML other m 2020-11-30T03:53:33.64
IV.FDMO.HHN. ML:0.8 0.000025820900000000002 4.0384 AML other m 2020-11-30T03:53:34.26
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