Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 28-10-2020 and time 19:18:16 (Italy) in region 5 km W Micigliano (RI)

A magnitude ML 1.7 earthquake occured in region: 5 km W Micigliano (RI), on

  • 28-10-2020 18:18:16 (UTC)
  • 28-10-2020 19:18:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4560, 12.9990 at 10 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
Micigliano RI 5 127 127
Castel Sant'Angelo RI 7 1308 1435
Borgo Velino RI 7 972 2407
Antrodoco RI 8 2588 4995
Cantalice RI 8 2755 7750
Cittaducale RI 9 6828 14578
Poggio Bustone RI 11 2055 16633
Posta RI 11 694 17327
Leonessa RI 12 2435 19762
Rieti RI 12 47698 67460
Borbona RI 13 617 68077
Rivodutri RI 14 1253 69330
Concerviano RI 15 291 69621
Morro Reatino RI 16 373 69994
Belmonte in Sabina RI 17 636 70630
Labro RI 18 374 71004
Colli sul Velino RI 19 533 71537
Cagnano Amiterno AQ 19 1369 72906
Petrella Salto RI 19 1197 74103
Greccio RI 19 1558 75661
Polino TR 19 233 75894
Contigliano RI 20 3783 79677

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Terni (111501 inhabitants)
35 Km W of L'Aquila (69753 inhabitants)
55 Km NE of Guidonia Montecelio (88673 inhabitants)
57 Km N of Tivoli (56533 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
62 Km W of Teramo (54892 inhabitants)
73 Km E of Viterbo (67173 inhabitants)
76 Km NE of Roma (2864731 inhabitants)
87 Km N of Velletri (53303 inhabitants)
88 Km SE of Perugia (166134 inhabitants)
95 Km W of Montesilvano (53738 inhabitants)
96 Km NE of Pomezia (62966 inhabitants)
97 Km W of Chieti (51815 inhabitants)
99 Km NE of Fiumicino (78395 inhabitants)
100 Km W of Pescara (121014 inhabitants)
100 Km N of Aprilia (73446 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 1.7 2020-10-28
18:18:16		 42.4555 12.9987 10 2021-02-26
14:56:03		 Bollettino Sismico Italiano INGV 84498961
Reviewed
Rev100 		ML 1.7 2020-10-28
18:18:16		 42.4472 12.9868 10 2020-10-28
18:25:29		 Sala Sismica INGV-Roma 84219731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-28 18:18:16 ± 0.08
Latitude 42.4555 ± 0.0036
Longitude 12.9987 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84498961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 424
Semi-minor axis of confidence ellipse (meter) 389
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 206
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.15019
Epicentral distance of station farthest from the epicenter (degree) 0.87684
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 84498961
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-11 16:23:52

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 84219731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-28 18:25:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FEMA.HNE. 2020-10-28T18:18:34.96 0.3 undecidable manual S 4 56.3991 50 0.37 66
IV.MC2.EHZ. 2020-10-28T18:18:34.40 0.3 undecidable manual S 17 52.9026 50 0.73 59
IV.MMO1.EHZ. 2020-10-28T18:18:34.77 0.3 undecidable manual S 28 55.9995 50 0.27 67
IV.TERO.HHZ. 2020-10-28T18:18:33.20 0.3 undecidable manual S 69 52.8027 50 -0.45 65
IV.MTCE.HHZ. 2020-10-28T18:18:33.59 0.6 undecidable manual S 204 52.4031 50 0.05 47
IV.EL6.EHZ. 2020-10-28T18:18:33.77 0.3 undecidable manual P 5 97.3248 50 0.39 60
IV.MOMA.HHZ. 2020-10-28T18:18:33.61 0.6 undecidable manual S 318 52.1034 50 0.15 46
IV.NRCA.HHZ. 2020-10-28T18:18:30.68 0.3 undecidable manual S 13 43.0236 50 -0.34 68
IV.MF5.EHZ. 2020-10-28T18:18:29.54 0.3 undecidable manual P 32 69.9744 50 0.37 64
IV.CSP1.EHZ. 2020-10-28T18:18:29.57 0.3 undecidable manual P 13 72.5718 50 0 69
IV.SMA1.EHZ. 2020-10-28T18:18:28.56 0.3 undecidable manual S 55 33.6441 50 0.03 73
IV.FDMO.HHZ. 2020-10-28T18:18:28.30 0.3 undecidable manual P 6 64.8906 50 -0.08 69
IV.CAMP.HHZ. 2020-10-28T18:18:28.67 0.3 undecidable manual S 75 34.743 50 -0.15 71
IV.T1299.HNN. 2020-10-28T18:18:27.60 0.3 undecidable manual S 49 30.5472 50 -0.09 73
IV.CESI.HHZ. 2020-10-28T18:18:27.69 0.3 undecidable manual P 353 61.3941 50 -0.17 68
IV.FEMA.HNE. 2020-10-28T18:18:27.30 0.3 undecidable manual P 4 56.3991 50 0.23 68
IV.MTCE.HHZ. 2020-10-28T18:18:27.11 1.0 undecidable manual P 204 52.4031 50 0.65 20
IV.MMO1.EHZ. 2020-10-28T18:18:26.77 0.3 undecidable manual P 28 55.9995 50 -0.25 67
IV.TERO.HHZ. 2020-10-28T18:18:26.29 0.1 undecidable manual P 69 52.8027 50 -0.24 90
IV.MOMA.HHZ. 2020-10-28T18:18:26.40 0.3 undecidable manual P 318 52.1034 50 -0.02 71
IV.GAVE.EHZ. 2020-10-28T18:18:26.29 0.3 undecidable manual S 342 27.6501 50 -0.63 64
IV.MC2.EHZ. 2020-10-28T18:18:26.42 0.1 undecidable manual P 17 52.9026 50 -0.12 93
IV.ARRO.EHZ. 2020-10-28T18:18:25.21 0.3 undecidable manual S 306 23.4543 113 -0.41 69
IV.FIAM.HNN. 2020-10-28T18:18:25.31 0.6 undecidable manual S 155 22.9548 113 -0.14 49
IV.RM33.EHZ. 2020-10-28T18:18:24.13 0.3 undecidable manual S 71 18.6702 118 0.04 75
IV.CESX.HHE. 2020-10-28T18:18:24.86 0.3 undecidable manual P 297 37.7289 50 0.66 62
IV.NRCA.HHZ. 2020-10-28T18:18:24.71 0.1 undecidable manual P 13 43.0236 50 -0.3 91
IV.T1299.HNN. 2020-10-28T18:18:23.21 0.3 undecidable manual P 49 30.5472 50 0.12 72
IV.CAMP.HHZ. 2020-10-28T18:18:23.82 0.3 undecidable manual P 75 34.743 50 0.08 72
IV.SMA1.EHZ. 2020-10-28T18:18:23.57 0.1 undecidable manual P 55 33.6441 50 0 98
IV.LNSS.HHZ. 2020-10-28T18:18:23.53 0.3 undecidable manual S 12 16.6722 120 0.02 76
IV.GAVE.EHZ. 2020-10-28T18:18:22.46 0.1 positive manual P 342 27.6501 50 -0.18 96
IV.RM33.EHZ. 2020-10-28T18:18:21.26 0.1 positive manual P 71 18.6702 118 0.25 96
IV.FIAM.HNN. 2020-10-28T18:18:21.70 0.3 undecidable manual P 155 22.9548 113 -0.09 74
IV.ARRO.EHZ. 2020-10-28T18:18:21.88 0.1 undecidable manual P 306 23.4543 113 -0.01 100
IV.LNSS.HHZ. 2020-10-28T18:18:20.80 0.1 positive manual P 12 16.6722 120 0.13 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.6 0.0003745 0.1 AML other m 2020-10-28T18:18:23.89
IV.LNSS.HHN. ML:1.6 0.0003815 1.2 AML other m 2020-10-28T18:18:24.09
IV.RM33.EHN. ML:1.7 0.0004275 0.94 AML other m 2020-10-28T18:18:24.34
IV.RM33.HNN. ML:1.7 0.000435 0.94 AML other m 2020-10-28T18:18:24.34
IV.RM33.EHE. ML:1.8 0.0005275 0.22 AML other m 2020-10-28T18:18:24.71
IV.RM33.HNE. ML:1.8 0.0005625 0.22 AML other m 2020-10-28T18:18:24.71
IV.ARRO.EHE. ML:1.5 0.0002 0.2 AML other m 2020-10-28T18:18:25.92
IV.ARRO.EHN. ML:1.6 0.00022499999999999997 0.18 AML other m 2020-10-28T18:18:26.21
IV.GAVE.EHE. ML:1.6 0.000209 0.42 AML other m 2020-10-28T18:18:26.53
IV.GAVE.EHN. ML:1.6 0.00022350000000000004 0.16 AML other m 2020-10-28T18:18:26.72
IV.SMA1.EHE. ML:2.0 0.000427 1.8 AML other m 2020-10-28T18:18:29.97
IV.SMA1.EHN. ML:1.7 0.00021600000000000002 0.54 AML other m 2020-10-28T18:18:29.58
IV.NRCA.HHE. ML:2.1 0.0003815 1.86 AML other m 2020-10-28T18:18:31.06
IV.NRCA.HHN. ML:1.9 0.0002385 0.98 AML other m 2020-10-28T18:18:31.93
IV.TERO.HHN. ML:1.7 0.000124 0.7 AML other m 2020-10-28T18:18:33.69
IV.TERO.HHE. ML:1.6 0.0001029 0.12 AML other m 2020-10-28T18:18:33.86
IV.MOMA.HHE. ML:1.4 0.000054449999999999995 0.12 AML other m 2020-10-28T18:18:35.03
IV.MOMA.HHN. ML:1.3 0.0000504 1.56 AML other m 2020-10-28T18:18:35.06
IV.CESI.HHN. ML:1.6 0.00007605 0.88 AML other m 2020-10-28T18:18:37.62
IV.CESI.HHE. ML:1.4 0.0000479 0.56 AML other m 2020-10-28T18:18:38.95
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