Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 06-12-2020 and time 12:45:39 (Italy) in region 4 km E Amatrice (RI)

A magnitude ML 1.8 earthquake occured in region: 4 km E Amatrice (RI), on

  • 06-12-2020 11:45:39 (UTC)
  • 06-12-2020 12:45:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6170, 13.3280 at 7 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
Amatrice RI 4 2657 2657
Campotosto AQ 7 542 3199
Capitignano AQ 11 665 3864
Accumoli RI 11 667 4531
Montereale AQ 12 2581 7112
Cittareale RI 14 482 7594
Crognaleto TE 15 1297 8891
Cortino TE 15 656 9547
Arquata del Tronto AP 18 1178 10725
Rocca Santa Maria TE 18 537 11262
Acquasanta Terme AP 18 2916 14178
Fano Adriano TE 19 296 14474
Barete AQ 19 737 15211
Cagnano Amiterno AQ 19 1369 16580
Valle Castellana TE 19 977 17557
Borbona RI 20 617 18174

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km N of L'Aquila (69753 inhabitants)
31 Km W of Teramo (54892 inhabitants)
56 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
75 Km W of Pescara (121014 inhabitants)
75 Km W of Chieti (51815 inhabitants)
84 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km NE of Tivoli (56533 inhabitants)
94 Km SE of Perugia (166134 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 1.8 2020-12-06
11:45:39		 42.6167 13.328 7 2021-02-26
14:56:18		 Bollettino Sismico Italiano INGV 86889911
Reviewed
Rev100 		ML 1.8 2020-12-06
11:45:39		 42.6257 13.3343 7 2020-12-06
11:56:01		 Sala Sismica INGV-Roma 85242661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-06 11:45:39 ± 0.08
Latitude 42.6167 ± 0.0045
Longitude 13.3280 ± 0.0061
Depth (km) 7 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86889911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 620
Semi-minor axis of confidence ellipse (meter) 276
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 228
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 30
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.56118
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 85242661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-06 11:56:01

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 27
Type of magnitude ML
Reference to an origin 86889911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-06 18:52:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
XK.SELL.HHZ. 2020-12-06T11:47:32.82 3.0 undecidable manual Sg 8.94 0
OX.CIMO.HNZ. 2020-12-06T11:47:13.29 3.0 undecidable manual Sn -2.24 0
IV.MCT.HHZ. 2020-12-06T11:46:56.50 3.0 positive manual Pg 10.13 0
IV.MCEL.HHZ. 2020-12-06T11:46:51.09 3.0 undecidable manual Sg 3.48 0
IV.FIR.HHZ. 2020-12-06T11:46:42.67 3.0 undecidable manual Sg 2.1 0
IV.PZUN.HHZ. 2020-12-06T11:46:41.37 3.0 undecidable manual Sn 0.6 0
IV.BRSN.EHZ. 2020-12-06T11:46:34.87 3.0 undecidable manual Sn -1.06 0
IV.LRP.EHZ. 2020-12-06T11:45:59.30 3.0 undecidable manual S -9.99 0
IV.MML1.HNE. 2020-12-06T11:45:59.26 0.6 undecidable manual S 332 62.2932 50 0.17 45
IV.CSP1.EHZ. 2020-12-06T11:45:57.64 0.3 undecidable manual S 349 53.6019 50 0.84 55
IV.T0110.HHZ. 2020-12-06T11:45:57.87 0.6 undecidable manual S 139 56.499 50 0.31 44
IV.GUMA.HHZ. 2020-12-06T11:45:56.56 0.6 undecidable manual S 1 49.5171 50 0.88 37
IV.CESI.HHE. 2020-12-06T11:45:56.83 0.6 undecidable manual S 321 55.1004 50 -0.37 43
IV.FDMO.HHN. 2020-12-06T11:45:55.66 0.3 undecidable manual S 337 50.5161 50 -0.3 67
IV.MF5.EHZ. 2020-12-06T11:45:54.25 0.3 undecidable manual S 15 42.5241 50 0.42 66
IV.VIVA.HHZ. 2020-12-06T11:45:53.64 3.0 negative manual P -2.13 0
IV.PTRJ.HNZ. 2020-12-06T11:45:52.08 3.0 undecidable manual P -3.08 0
IV.MIDA.HHZ. 2020-12-06T11:45:51.92 3.0 undecidable manual Pg 1.21 0
IV.MML1.HNE. 2020-12-06T11:45:50.63 0.6 undecidable manual P 332 62.2932 50 -0.03 46
IV.PF6.EHN. 2020-12-06T11:45:50.04 0.3 undecidable manual P 349 58.7967 50 -0.09 69
IV.NRCA.HHZ. 2020-12-06T11:45:49.57 0.3 undecidable manual S 324 29.6481 103 -0.15 71
IV.T0110.HHZ. 2020-12-06T11:45:49.66 0.3 undecidable manual P 139 56.499 50 -0.11 69
IV.CESI.HHE. 2020-12-06T11:45:49.26 0.3 undecidable manual P 321 55.1004 50 -0.3 66
IV.GIGS.HHZ. 2020-12-06T11:45:48.24 0.3 undecidable manual S 132 27.0507 105 -0.58 65
IV.CSP1.EHZ. 2020-12-06T11:45:48.82 0.3 undecidable manual P 349 53.6019 50 -0.51 63
IV.FDMO.HHN. 2020-12-06T11:45:48.30 0.3 undecidable manual P 337 50.5161 50 -0.55 63
IV.GUMA.HHZ. 2020-12-06T11:45:48.67 0.6 undecidable manual P 1 49.5171 50 -0.01 47
IV.TERO.HHZ. 2020-12-06T11:45:47.16 0.3 undecidable manual S 88 22.5552 107 -0.16 72
IV.MF5.EHZ. 2020-12-06T11:45:47.65 0.3 undecidable manual P 15 42.5241 50 0.03 72
IV.NRCA.HHZ. 2020-12-06T11:45:45.07 0.3 undecidable manual P 324 29.6481 103 -0.17 71
IV.MTRA.EHZ. 2020-12-06T11:45:45.20 0.1 undecidable manual S 20 16.4724 113 -0.16 97
MN.AQU.HHE. 2020-12-06T11:45:45.67 3.0 undecidable manual P 0.09 0
IV.GIGS.HHZ. 2020-12-06T11:45:44.52 0.3 undecidable manual P 132 27.0507 105 -0.2 71
IV.CAMP.HHZ. 2020-12-06T11:45:44.05 0.3 undecidable manual S 144 11.1777 122 0.34 71
IV.LNSS.HHZ. 2020-12-06T11:45:44.14 0.1 undecidable manual P 266 23.5542 107 0.09 98
IV.TERO.HHZ. 2020-12-06T11:45:43.85 0.1 undecidable manual P 88 22.5552 107 -0.01 99
IV.CAMP.HHZ. 2020-12-06T11:45:42.10 0.1 undecidable manual P 144 11.1777 122 0.33 95
IV.MTRA.EHZ. 2020-12-06T11:45:42.77 0.1 positive manual P 20 16.4724 113 0.05 100
IV.T1299.EHN. 2020-12-06T11:45:42.00 0.3 undecidable manual S 297 4.1958 149 0.02 77
IV.SMA1.EHZ. 2020-12-06T11:45:41.62 0.3 undecidable manual S 21 1.5984 167 -0.02 77
IV.T1299.EHN. 2020-12-06T11:45:41.06 0.1 undecidable manual P 297 4.1958 149 0.28 97
IV.SMA1.EHZ. 2020-12-06T11:45:40.73 0.1 undecidable manual P 21 1.5984 167 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHN. ML:1.4 0.00030366515 0.48 AML other m 2020-12-06T11:45:44.36
IV.CAMP.HHE. ML:1.2 0.00019869420499999999 0.1856 AML other m 2020-12-06T11:45:44.56
IV.MTRA.HNE. ML:1.7 0.0004939756 0.0896 AML other m 2020-12-06T11:45:45.39
IV.MTRA.EHE. ML:1.7 0.00048739270000000003 0.0768 AML other m 2020-12-06T11:45:45.39
IV.MTRA.HNN. ML:1.6 0.00038105825 0.1216 AML other m 2020-12-06T11:45:45.80
IV.MTRA.EHN. ML:1.6 0.00037931365 0.1024 AML other m 2020-12-06T11:45:45.75
IV.TERO.HNN. ML:1.9 0.0006353665 0.2496 AML other m 2020-12-06T11:45:47.43
IV.TERO.HHN. ML:2.0 0.0007690268499999999 0.2624 AML other m 2020-12-06T11:45:47.43
IV.TERO.HHE. ML:2.0 0.0006484059499999999 0.2624 AML other m 2020-12-06T11:45:47.49
IV.TERO.HNE. ML:1.9 0.00061069215 0.2624 AML other m 2020-12-06T11:45:47.41
IV.LNSS.HHE. ML:1.4 0.00018736154999999998 0.1216 AML other m 2020-12-06T11:45:49.75
IV.LNSS.HNE. ML:1.4 0.0001587576 0.1216 AML other m 2020-12-06T11:45:49.75
IV.NRCA.HHE. ML:1.8 0.00028245055 0.1408 AML other m 2020-12-06T11:45:50.08
IV.NRCA.HNE. ML:1.8 0.00027816695000000005 0.1408 AML other m 2020-12-06T11:45:50.08
IV.NRCA.HNN. ML:1.6 0.00020480713000000002 0.0896 AML other m 2020-12-06T11:45:50.62
IV.NRCA.HHN. ML:1.6 0.00020465545000000003 0.0832 AML other m 2020-12-06T11:45:50.67
IV.CSP1.EHE. ML:2.1 0.00027606494999999996 0.4064 AML other m 2020-12-06T11:45:51.31
IV.LNSS.HNN. ML:1.5 0.0002269372 0.4544 AML other m 2020-12-06T11:45:51.88
IV.LNSS.HHN. ML:1.4 0.00017367725000000001 0.3008 AML other m 2020-12-06T11:45:53.39
IV.CSP1.EHN. ML:2.0 0.00023651988 0.5792 AML other m 2020-12-06T11:45:54.94
IV.MIDA.HNN. ML:2.6 0.0002261156 0.4832 AML other m 2020-12-06T11:46:03.40
IV.GUMA.HHE. ML:2.1 0.00032305075 6.3744 AML other m 2020-12-06T11:45:58.37
IV.GUMA.HHN. ML:2.0 0.00029358320000000005 3.52 AML other m 2020-12-06T11:46:01.55
IV.MF5.EHN. ML:1.8 0.000183856835 0.8 AML other m 2020-12-06T11:45:56.81
IV.MIDA.HHE. ML:1.9 0.000056351369999999995 0.96 AML other m 2020-12-06T11:45:55.40
IV.MIDA.HHN. ML:1.9 0.00004945555 0.6592 AML other m 2020-12-06T11:45:57.61
IV.MIDA.HNE. ML:2.2 0.00009231855 1.28 AML other m 2020-12-06T11:45:58.48
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