Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 09-12-2020 and time 08:19:36 (UTC) in region 8 km NW Accumoli (RI)

A magnitude ML 2.2 earthquake occured in region: 8 km NW Accumoli (RI), on

  • 09-12-2020 08:19:36 (UTC)
  • 09-12-2020 09:19:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7450, 13.1800 at 9 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 8 667 667
Norcia PG 9 4957 5624
Arquata del Tronto AP 10 1178 6802
Cascia PG 14 3217 10019
Cittareale RI 14 482 10501
Amatrice RI 16 2657 13158
Montegallo AP 17 523 13681
Castelsantangelo sul Nera MC 17 281 13962
Preci PG 19 724 14686
Acquasanta Terme AP 19 2916 17602

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Teramo (54892 inhabitants)
45 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.2 2020-12-09
08:19:36		 42.7448 13.1798 9 2021-02-26
14:56:19		 Bollettino Sismico Italiano INGV 87262391
Reviewed
Rev100 		ML 2.2 2020-12-09
08:19:36		 42.7468 13.181 10 2020-12-09
08:25:23		 Sala Sismica INGV-Roma 85314431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-09 08:19:36 ± 0.06
Latitude 42.7448 ± 0.0036
Longitude 13.1798 ± 0.0049
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87262391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 409
Semi-minor axis of confidence ellipse (meter) 127
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 57
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.10072
Epicentral distance of station farthest from the epicenter (degree) 0.67719
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 49
Type of magnitude ML
Reference to an origin 87262391
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-18 01:30:30

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 49
Type of magnitude ML
Reference to an origin 85314431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-09 08:25:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-12-09T08:19:57.28 0.6 undecidable manual S 354 65.1903 50 0.78 38
IV.SAP2.EHZ. 2020-12-09T08:19:51.50 0.6 undecidable manual S 24 42.9237 50 0.93 37
IV.CSP1.EHZ. 2020-12-09T08:19:49.35 0.6 undecidable manual S 3 38.5281 50 -0.05 48
IV.GUMA.HHZ. 2020-12-09T08:19:49.76 0.6 undecidable manual S 20 37.4292 50 0.65 42
IV.T0110.HHZ. 2020-12-09T08:19:49.61 0.3 undecidable manual P 139 75.1692 50 0.11 67
IV.ARRO.EHZ. 2020-12-09T08:19:49.66 0.6 undecidable manual S 242 38.4282 50 0.28 46
IV.TERO.HHZ. 2020-12-09T08:19:48.24 0.6 undecidable manual S 111 37.1295 50 -0.79 39
IV.CESI.HHZ. 2020-12-09T08:19:48.76 0.6 undecidable manual S 322 36.5412 50 -0.1 48
IV.MF5.EHZ. 2020-12-09T08:19:48.97 0.6 undecidable manual S 40 35.2425 50 0.44 45
IV.FDMO.HHZ. 2020-12-09T08:19:47.76 0.6 undecidable manual S 347 33.2445 50 -0.22 47
IV.EL6.EHZ. 2020-12-09T08:19:47.85 0.3 undecidable manual P 354 65.1903 50 -0.1 68
IV.SNTG.HHZ. 2020-12-09T08:19:47.04 0.3 undecidable manual P 341 59.7957 50 -0.09 69
IV.MNTT.EHZ. 2020-12-09T08:19:46.13 0.6 undecidable manual P 44 48.8178 50 0.7 40
IV.CAMP.HHZ. 2020-12-09T08:19:46.55 0.6 undecidable manual S 141 29.8479 50 -0.52 44
IV.ASSB.HHZ. 2020-12-09T08:19:45.80 0.3 undecidable manual P 308 53.7018 50 -0.39 66
IV.OFFI.HHZ. 2020-12-09T08:19:45.63 0.3 undecidable manual P 63 46.2204 50 0.59 63
IV.GAVE.EHZ. 2020-12-09T08:19:45.54 0.6 undecidable manual S 256 23.9538 111 0.32 47
IV.FEMA.HNZ. 2020-12-09T08:19:45.63 0.3 undecidable manual S 336 26.3514 110 -0.34 70
IV.CESX.HHZ. 2020-12-09T08:19:45.64 0.3 undecidable manual P 253 50.7159 50 -0.08 71
IV.MOMA.HHZ. 2020-12-09T08:19:45.75 0.3 undecidable manual P 278 50.1165 50 0.12 70
IV.SAP2.EHZ. 2020-12-09T08:19:44.73 0.3 undecidable manual P 24 42.9237 50 0.2 70
IV.MMO1.EHZ. 2020-12-09T08:19:43.96 0.6 undecidable manual S 35 20.868 114 -0.26 48
IV.MF5.EHZ. 2020-12-09T08:19:43.42 0.1 undecidable manual P 40 35.2425 50 0.07 97
IV.CSP1.EHZ. 2020-12-09T08:19:43.57 0.1 undecidable manual P 3 38.5281 50 -0.28 92
IV.SMA1.EHZ. 2020-12-09T08:19:43.68 0.6 undecidable manual S 135 17.9709 118 0.38 47
IV.TERO.HHZ. 2020-12-09T08:19:43.17 0.3 undecidable manual P 111 37.1295 50 -0.47 67
IV.GUMA.HHZ. 2020-12-09T08:19:43.73 0.1 undecidable manual P 20 37.4292 50 0.04 97
IV.MC2.EHZ. 2020-12-09T08:19:43.70 0.6 undecidable manual S 2 18.4704 117 0.23 48
IV.CESI.HHZ. 2020-12-09T08:19:43.40 0.1 undecidable manual P 322 36.5412 50 -0.14 96
IV.ARRO.EHZ. 2020-12-09T08:19:43.75 0.1 undecidable manual P 242 38.4282 50 -0.09 96
IV.T1299.HNZ. 2020-12-09T08:19:42.81 0.6 undecidable manual S 146 14.874 122 0.45 46
IV.CAMP.HHZ. 2020-12-09T08:19:42.21 0.1 undecidable manual P 141 29.8479 50 -0.3 94
IV.MTRA.EHZ. 2020-12-09T08:19:42.76 0.3 undecidable manual S 86 17.6712 118 -0.46 69
IV.FDMO.HHZ. 2020-12-09T08:19:42.73 0.1 undecidable manual P 347 33.2445 50 -0.3 93
IV.GAVE.EHZ. 2020-12-09T08:19:41.56 0.1 undecidable manual P 256 23.9538 111 0.12 98
IV.NRCA.HNZ. 2020-12-09T08:19:41.14 0.1 undecidable manual S 332 11.1777 130 -0.2 99
IV.FEMA.HNZ. 2020-12-09T08:19:41.78 0.3 undecidable manual P 336 26.3514 110 -0.09 74
IV.MC2.EHZ. 2020-12-09T08:19:40.51 0.1 undecidable manual P 2 18.4704 117 0.08 100
IV.T1299.HNZ. 2020-12-09T08:19:40.11 0.1 undecidable manual P 146 14.874 122 0.32 96
IV.MMO1.EHZ. 2020-12-09T08:19:40.69 0.1 undecidable manual P 35 20.868 114 -0.17 97
IV.MTRA.EHZ. 2020-12-09T08:19:40.21 0.1 positive manual P 86 17.6712 118 -0.08 100
IV.SMA1.EHZ. 2020-12-09T08:19:40.48 0.3 undecidable manual P 135 17.9709 118 0.15 74
IV.NRCA.HNZ. 2020-12-09T08:19:39.35 0.1 positive manual P 332 11.1777 130 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.5 0.003785 0.08 AML other m 2020-12-09T08:19:41.28
IV.NRCA.HNN. ML:2.4 0.003435 0.1 AML other m 2020-12-09T08:19:41.28
IV.NRCA.HNE. ML:2.3 0.00257 0.08 AML other m 2020-12-09T08:19:41.51
IV.NRCA.HHE. ML:2.4 0.00276 0.76 AML other m 2020-12-09T08:19:41.51
IV.MTRA.HNN. ML:2.6 0.00336 1.34 AML other m 2020-12-09T08:19:43.68
IV.MTRA.EHN. ML:2.6 0.003385 1.34 AML other m 2020-12-09T08:19:43.69
IV.MTRA.HNE. ML:2.7 0.0042450000000000005 0.72 AML other m 2020-12-09T08:19:43.05
IV.MTRA.EHE. ML:2.7 0.004225 0.72 AML other m 2020-12-09T08:19:43.06
IV.SMA1.EHN. ML:2.1 0.00099 0.2 AML other m 2020-12-09T08:19:45.49
IV.SMA1.EHE. ML:2.3 0.0017 0.4 AML other m 2020-12-09T08:19:45.78
IV.GAVE.HNN. ML:1.9 0.000502 0.7 AML other m 2020-12-09T08:19:46.48
IV.GAVE.EHE. ML:2.4 0.0016099999999999999 0.2 AML other m 2020-12-09T08:19:46.38
IV.GAVE.HNE. ML:2.4 0.0014650000000000002 0.54 AML other m 2020-12-09T08:19:46.38
IV.GAVE.EHN. ML:2.3 0.001385 0.62 AML other m 2020-12-09T08:19:46.48
IV.CAMP.HHE. ML:1.5 0.0001610949 1.7824 AML other m 2020-12-09T08:19:46.05
IV.TERO.HNN. ML:2.1 0.00042911355000000003 0.0768 AML other m 2020-12-09T08:19:48.68
IV.CESI.HHE. ML:2.0 0.00035299999999999996 0.24 AML other m 2020-12-09T08:19:49.08
IV.CESI.HNE. ML:2.0 0.00040675644999999997 0.2432 AML other m 2020-12-09T08:19:49.08
IV.CESI.HNN. ML:2.2 0.0006183466 0.2752 AML other m 2020-12-09T08:19:49.24
IV.CESI.HHN. ML:2.2 0.0006725000000000001 0.28 AML other m 2020-12-09T08:19:49.24
IV.TERO.HHN. ML:2.0 0.0004075 0.44 AML other m 2020-12-09T08:19:49.68
IV.FDMO.HHE. ML:1.9 0.000354 0.22 AML other m 2020-12-09T08:19:49.38
IV.TERO.HHE. ML:2.0 0.00041900000000000005 1.74 AML other m 2020-12-09T08:19:49.03
IV.TERO.HNE. ML:2.1 0.00046258980000000007 1.8528 AML other m 2020-12-09T08:19:49.04
IV.CSP1.EHE. ML:2.6 0.0016 1.6 AML other m 2020-12-09T08:19:49.17
IV.FDMO.HHN. ML:1.9 0.000332 0.56 AML other m 2020-12-09T08:19:50.01
IV.GUMA.HHE. ML:3.1 0.0045 0.24 AML other m 2020-12-09T08:19:50.16
IV.GUMA.HNE. ML:3.0 0.0035099999999999997 0.24 AML other m 2020-12-09T08:19:50.17
IV.CSP1.EHN. ML:2.7 0.00204 1.68 AML other m 2020-12-09T08:19:50.15
IV.GUMA.HHN. ML:2.8 0.002235 1.02 AML other m 2020-12-09T08:19:50.69
IV.GUMA.HNN. ML:2.7 0.001975 1.38 AML other m 2020-12-09T08:19:50.02
IV.ARRO.EHN. ML:1.9 0.00027850000000000005 1.12 AML other m 2020-12-09T08:19:51.56
IV.SAP2.EHN. ML:3.3 0.006275 1.36 AML other m 2020-12-09T08:19:51.75
IV.CAMP.HHN. ML:1.5 0.00014661015 0.6592 AML other m 2020-12-09T08:19:52.18
IV.SAP2.EHE. ML:2.4 0.0009035 1.48 AML other m 2020-12-09T08:19:52.95
IV.MF5.EHE. ML:2.1 0.0005154822999999999 0.3392 AML other m 2020-12-09T08:19:52.75
IV.ARRO.EHE. ML:1.8 0.00022 0.58 AML other m 2020-12-09T08:19:53.03
IV.MOMA.HHN. ML:2.1 0.0003485 1.4 AML other m 2020-12-09T08:19:54.87
IV.CESX.HHE. ML:1.8 0.000179 0.34 AML other m 2020-12-09T08:19:54.90
IV.MOMA.HNE. ML:2.1 0.000341 1.06 AML other m 2020-12-09T08:19:55.07
IV.ASSB.HHE. ML:1.9 0.0001835 0.7 AML other m 2020-12-09T08:19:55.11
IV.MNTT.EHN. ML:2.4 0.0007105 0.9 AML other m 2020-12-09T08:19:55.53
IV.CESX.HHN. ML:1.9 0.0002 0.66 AML other m 2020-12-09T08:19:55.74
IV.MOMA.HHE. ML:2.1 0.00032199999999999997 0.72 AML other m 2020-12-09T08:19:56.40
IV.ASSB.HHN. ML:1.9 0.00020250000000000002 0.34 AML other m 2020-12-09T08:19:56.27
IV.SNTG.HHE. ML:1.8 0.00013624999999999998 0.46 AML other m 2020-12-09T08:19:56.74
IV.SNTG.HHN. ML:1.7 0.00010980551999999999 0.1408 AML other m 2020-12-09T08:19:56.75
IV.MNTT.EHE. ML:2.4 0.000639 0.62 AML other m 2020-12-09T08:19:59.09
IV.EL6.EHE. ML:2.0 0.0001999572 0.256 AML other m 2020-12-09T08:20:01.37
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download