Earthquake with magnitude of ML 1.6 on date 27-10-2020 and time 07:16:29 (Italy) in region 4 km SW Accumoli (RI)

A magnitude ML 1.6 earthquake occured in region: 4 km SW Accumoli (RI), on

  • 27-10-2020 06:16:29 (UTC)
  • 27-10-2020 07:16:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.67, 13.22 at 13 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.

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 4 667 667
Amatrice RI 7 2657 3324
Cittareale RI 8 482 3806
Arquata del Tronto AP 13 1178 4984
Montereale AQ 16 2581 7565
Norcia PG 17 4957 12522
Cascia PG 18 3217 15739
Campotosto AQ 18 542 16281
Capitignano AQ 18 665 16946
Borbona RI 19 617 17563
Posta RI 19 694 18257
Acquasanta Terme AP 19 2916 21173

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of L'Aquila (69753 inhabitants)
40 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
53 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
85 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km W of Pescara (121014 inhabitants)
86 Km W of Chieti (51815 inhabitants)
86 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 1.6 2020-10-27
06:16:29
42.67 13.22 13 2021-02-26
14:56:06
Bollettino Sismico Italiano INGV 84865121
Reviewed
Rev100
ML 1.6 2020-10-27
06:16:29
42.68 13.21 10 2020-10-27
06:26:47
Sala Sismica INGV-Roma 84172251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-27 06:16:29 ± 0.07
Latitude 42.67 ± 0.00
Longitude 13.22 ± 0.01
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84865121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 485
Semi-minor axis of confidence ellipse (meter) 247
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 244
Circular confidence region, given by single value of horizontal uncertainty (meter) 490
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
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) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.06025
Epicentral distance of station farthest from the epicenter (degree) 0.47754
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 21
Type of magnitude ML
Reference to an origin 84865121
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-20 08:13:56

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 84172251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-27 06:26:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2020-10-27T06:16:44.18 0.3 undecidable manual S 359 0.4209 94 0.18 69
IV.CESI.HHE. 2020-10-27T06:16:43.43 0.6 undecidable manual S 326 0.4047 94 -0.11 47
IV.MF5.EHZ. 2020-10-27T06:16:43.16 0.6 undecidable manual S 29 0.3633 95 0.86 38
IV.FDMO.HHZ. 2020-10-27T06:16:42.61 0.6 undecidable manual S 345 0.3777 94 -0.12 47
IV.GIGS.HHN. 2020-10-27T06:16:41.59 0.6 undecidable manual S 130 0.3399 95 -0.04 47
IV.MC2.EHZ. 2020-10-27T06:16:39.15 0.6 undecidable manual S 355 0.241 99 0.44 45
IV.TERO.HHZ. 2020-10-27T06:16:39.79 0.6 undecidable manual S 100 0.2878 96 -0.3 45
IV.MMO1.EHZ. 2020-10-27T06:16:38.47 0.3 undecidable manual S 19 0.2419 99 -0.26 70
IV.MML1.HNE. 2020-10-27T06:16:38.80 0.6 undecidable manual P 338 0.4775 93 0.14 46
IV.CAMP.HHZ. 2020-10-27T06:16:37.41 0.6 undecidable manual S 134 0.1952 103 0.04 50
IV.CESI.HHE. 2020-10-27T06:16:37.84 0.3 undecidable manual P 326 0.4047 94 0.42 66
IV.MF5.EHZ. 2020-10-27T06:16:37.12 0.1 undecidable manual P 29 0.3633 95 0.41 89
IV.CSP1.EHZ. 2020-10-27T06:16:37.58 0.1 undecidable manual P 359 0.4209 94 -0.11 93
IV.FDMO.HHZ. 2020-10-27T06:16:36.72 0.1 undecidable manual P 345 0.3777 94 -0.23 92
IV.GIGS.HHN. 2020-10-27T06:16:36.24 0.3 undecidable manual P 130 0.3399 95 -0.08 71
IV.NRCA.HHZ. 2020-10-27T06:16:36.22 0.3 undecidable manual S 335 0.179 106 -0.69 63
IV.RM33.EHZ. 2020-10-27T06:16:36.50 0.3 undecidable manual S 181 0.1619 109 0.08 75
IV.MTRA.HNZ. 2020-10-27T06:16:35.82 0.3 undecidable manual S 57 0.1565 110 -0.46 68
IV.LNSS.HHZ. 2020-10-27T06:16:35.65 0.6 undecidable manual S 242 0.1475 113 -0.36 46
IV.TERO.HHZ. 2020-10-27T06:16:35.35 0.3 undecidable manual P 100 0.2878 96 -0.08 72
IV.MC2.EHZ. 2020-10-27T06:16:34.64 0.1 undecidable manual P 355 0.241 99 0.01 99
IV.MMO1.EHZ. 2020-10-27T06:16:34.56 0.1 undecidable manual P 19 0.2419 99 -0.08 97
IV.SMA1.EHZ. 2020-10-27T06:16:34.73 0.3 undecidable manual S 115 0.0953 130 0.03 75
IV.NRCA.HHZ. 2020-10-27T06:16:33.35 0.1 undecidable manual P 335 0.179 106 -0.25 95
IV.LNSS.HHZ. 2020-10-27T06:16:33.07 0.1 positive manual P 242 0.1475 113 -0.01 100
IV.RM33.EHZ. 2020-10-27T06:16:33.47 0.1 positive manual P 181 0.1619 109 0.16 98
IV.CAMP.HHZ. 2020-10-27T06:16:33.96 0.1 undecidable manual P 134 0.1952 103 0.1 99
IV.T1299.HNN. 2020-10-27T06:16:33.97 0.3 undecidable manual S 128 0.0603 146 -0.03 75
IV.MTRA.HNZ. 2020-10-27T06:16:33.17 0.1 positive manual P 57 0.1565 110 -0.06 99
IV.T1299.HNN. 2020-10-27T06:16:32.13 0.1 undecidable manual P 128 0.0603 146 0.22 99
IV.SMA1.EHZ. 2020-10-27T06:16:32.52 0.1 positive manual P 115 0.0953 130 0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.7 0.0005268127 0.1408 AML other m 2020-10-27T06:16:35.56
IV.SMA1.EHE. ML:1.8 0.0007295306 0.1024 AML other m 2020-10-27T06:16:35.32
IV.LNSS.HNE. ML:1.8 0.00053903265 0.3328 AML other m 2020-10-27T06:16:36.10
IV.LNSS.HNN. ML:1.8 0.0004731213 0.192 AML other m 2020-10-27T06:16:36.18
IV.LNSS.HHE. ML:1.8 0.00055315025 0.3616 AML other m 2020-10-27T06:16:36.11
IV.LNSS.HHN. ML:1.8 0.00052938475 0.1824 AML other m 2020-10-27T06:16:36.18
IV.MTRA.HNN. ML:1.2 0.00013210869 0.08 AML other m 2020-10-27T06:16:36.10
IV.MTRA.EHN. ML:1.2 0.0001222817 0.0576 AML other m 2020-10-27T06:16:36.10
IV.MTRA.EHE. ML:1.2 0.00012459118 0.1216 AML other m 2020-10-27T06:16:36.20
IV.MTRA.HNE. ML:1.2 0.00013482272 0.1216 AML other m 2020-10-27T06:16:36.20
IV.NRCA.HHN. ML:1.7 0.00031753695 0.16 AML other m 2020-10-27T06:16:36.38
IV.NRCA.HNN. ML:1.6 0.00029284045 0.1184 AML other m 2020-10-27T06:16:36.56
IV.NRCA.HHE. ML:2 0.00069320295 0.1216 AML other m 2020-10-27T06:16:36.64
IV.NRCA.HNE. ML:1.9 0.00062035685 0.1408 AML other m 2020-10-27T06:16:36.64
IV.RM33.EHN. ML:1.2 0.0001314076 0.1184 AML other m 2020-10-27T06:16:36.00
IV.RM33.HNE. ML:1.5 0.000213722685 0.1888 AML other m 2020-10-27T06:16:36.67
IV.RM33.EHE. ML:1.5 0.00022460835 0.1376 AML other m 2020-10-27T06:16:36.88
IV.TERO.HHN. ML:1.5 0.0001326727 0.08 AML other m 2020-10-27T06:16:40.82
IV.TERO.HHE. ML:1.3 8.649511E-5 0.08 AML other m 2020-10-27T06:16:40.83
IV.TERO.HNN. ML:1.5 0.00014744065 0.128 AML other m 2020-10-27T06:16:40.82
IV.TERO.HNE. ML:1.4 0.000101129445 0.1408 AML other m 2020-10-27T06:16:42.43
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