Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 11-08-2020 and time 02:50:09 (Italy) in region 6 km W Amatrice (RI)

A magnitude ML 1.6 earthquake occured in region: 6 km W Amatrice (RI), on

  • 11-08-2020 00:50:09 (UTC)
  • 11-08-2020 02:50:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6050, 13.2280 at 8 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
Cittareale RI 6 482 482
Amatrice RI 6 2657 3139
Montereale AQ 9 2581 5720
Accumoli RI 10 667 6387
Capitignano AQ 11 665 7052
Borbona RI 13 617 7669
Campotosto AQ 13 542 8211
Posta RI 14 694 8905
Cagnano Amiterno AQ 16 1369 10274
Barete AQ 18 737 11011
Pizzoli AQ 20 4326 15337
Arquata del Tronto AP 20 1178 16515

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of L'Aquila (69753 inhabitants)
40 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
58 Km SE of Foligno (57155 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
79 Km NE of Guidonia Montecelio (88673 inhabitants)
80 Km NE of Tivoli (56533 inhabitants)
82 Km W of Chieti (51815 inhabitants)
82 Km W of Pescara (121014 inhabitants)
88 Km SE of Perugia (166134 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
100 Km NE of Roma (2864731 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 2020-08-11
00:50:09		 42.6052 13.2283 8 2020-11-19
12:36:58		 Bollettino Sismico Italiano INGV 82367331
Reviewed
Rev100 		ML 1.6 2020-08-11
00:50:09		 42.6077 13.235 10 2020-08-11
00:59:52		 Sala Sismica INGV-Roma 81860011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-11 00:50:09 ± 0.05
Latitude 42.6052 ± 0.0027
Longitude 13.2283 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 82367331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 347
Semi-minor axis of confidence ellipse (meter) 205
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 215
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 58
Number of defining phases 47
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.72935
Number of stations at which the event was observed 40
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 45
Type of magnitude ML
Reference to an origin 82367331
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-27 07:35:55

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 35
Type of magnitude ML
Reference to an origin 81860011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-11 00:59:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
SL.KOGS.BHZ. 2020-08-11T00:51:59.07 3.0 undecidable manual Sn -4.88 0
IV.MTTG.HHZ. 2020-08-11T00:51:50.72 3.0 undecidable manual Sn -9.99 0
IV.IFIL.HHZ. 2020-08-11T00:51:48.30 3.0 undecidable manual Sg 0.87 0
IV.MBAL.EHZ. 2020-08-11T00:51:43.95 3.0 undecidable manual Sn -0.08 0
IV.HAGA.HHZ. 2020-08-11T00:51:33.10 3.0 undecidable manual Pg 11.99 0
GU.GRAM.HHZ. 2020-08-11T00:51:26.09 3.0 undecidable manual Sn -3.65 0
GU.GSCL.HHZ. 2020-08-11T00:51:25.84 3.0 undecidable manual Sn 5.21 0
CR.STON.BHZ. 2020-08-11T00:50:55.44 3.0 undecidable manual Pn 1.6 0
IV.ARVD.HHZ. 2020-08-11T00:50:41.90 3.0 undecidable manual Sn 1.55 0
IV.CSP1.EHZ. 2020-08-11T00:50:27.20 0.3 undecidable manual S 358 54.0015 50 0.39 66
IV.GUMA.HHZ. 2020-08-11T00:50:26.62 0.1 undecidable manual S 10 51.5151 50 0.48 86
IV.FDMO.HHZ. 2020-08-11T00:50:25.54 0.3 undecidable manual S 347 49.2174 50 0.01 72
IV.MF5.EHZ. 2020-08-11T00:50:25.29 0.1 undecidable manual S 24 46.4202 50 0.5 87
IV.EL6.EHZ. 2020-08-11T00:50:23.74 0.1 undecidable manual P 353 80.9523 50 0.22 86
IV.ROSPO.HHZ. 2020-08-11T00:50:23.17 3.0 undecidable manual Pg -2.18 0
IV.ARRO.EHZ. 2020-08-11T00:50:22.24 0.1 undecidable manual S 266 37.9287 50 -0.26 93
IV.FIAM.HHZ. 2020-08-11T00:50:22.31 0.3 undecidable manual S 194 38.4282 50 -0.35 68
IV.MC2.EHZ. 2020-08-11T00:50:21.17 0.3 undecidable manual S 355 34.1436 103 -0.17 71
IV.ASSB.HHZ. 2020-08-11T00:50:21.73 0.1 undecidable manual P 317 67.0773 50 0.35 86
IV.MMO1.EHZ. 2020-08-11T00:50:20.70 0.3 undecidable manual S 14 33.6441 103 -0.46 67
IV.MNTT.EHZ. 2020-08-11T00:50:20.57 0.1 undecidable manual P 30 58.7967 50 0.46 86
IV.T0110.HHZ. 2020-08-11T00:50:20.12 0.1 undecidable manual P 133 61.2942 50 -0.36 87
IV.GIGS.HHZ. 2020-08-11T00:50:20.85 0.1 undecidable manual S 121 32.8449 103 -0.04 98
IV.MOMA.HHZ. 2020-08-11T00:50:19.90 0.1 undecidable manual P 293 57.9975 50 -0.08 93
IV.CESX.HHZ. 2020-08-11T00:50:19.55 0.1 undecidable manual P 271 52.4031 50 0.44 87
IV.VCEL.EHZ. 2020-08-11T00:50:19.69 0.1 undecidable manual P 115 55.3002 50 0.14 92
IV.GAVE.EHZ. 2020-08-11T00:50:19.22 0.1 undecidable manual S 290 28.9488 105 -0.36 92
IV.GUMA.HHZ. 2020-08-11T00:50:19.06 0.1 undecidable manual P 10 51.5151 50 0.08 94
IV.TERO.HHZ. 2020-08-11T00:50:19.40 0.1 undecidable manual S 86 30.747 104 -0.79 80
IV.OFFI.HHZ. 2020-08-11T00:50:19.57 0.1 undecidable manual P 45 52.2033 50 0.48 86
IV.CSP1.EHZ. 2020-08-11T00:50:19.09 0.1 undecidable manual P 358 54.0015 50 -0.28 90
IV.NRCA.HHZ. 2020-08-11T00:50:18.91 0.1 undecidable manual S 340 26.9508 106 -0.03 99
IV.FDMO.HHZ. 2020-08-11T00:50:18.36 0.1 undecidable manual P 347 49.2174 50 -0.26 91
IV.MF5.EHZ. 2020-08-11T00:50:18.26 0.1 undecidable manual P 24 46.4202 50 0.06 95
IV.FAGN.HHZ. 2020-08-11T00:50:18.24 0.3 undecidable manual P 142 47.619 50 -0.13 70
IT.MTCL.HGZ. 2020-08-11T00:50:17.99 0.1 undecidable manual P 337 47.0196 50 -0.29 91
IV.ARRO.EHZ. 2020-08-11T00:50:16.45 0.1 undecidable manual P 266 37.9287 50 -0.43 90
IV.FIAM.HHZ. 2020-08-11T00:50:16.88 0.1 undecidable manual P 194 38.4282 50 -0.09 96
IV.MC2.EHZ. 2020-08-11T00:50:16.09 0.1 undecidable manual P 355 34.1436 103 -0.11 96
IV.MTRA.EHZ. 2020-08-11T00:50:16.94 0.1 undecidable manual S 39 21.6672 110 -0.25 96
IV.TERO.HHZ. 2020-08-11T00:50:15.15 0.1 undecidable manual P 86 30.747 104 -0.39 91
IV.GIGS.HHZ. 2020-08-11T00:50:15.29 0.1 undecidable manual P 121 32.8449 103 -0.66 84
MN.AQU.HNN. 2020-08-11T00:50:15.72 0.3 undecidable manual P 153 31.3464 104 0.05 73
IV.CAMP.HHZ. 2020-08-11T00:50:15.64 0.1 undecidable manual S 117 16.6722 115 0.08 100
IV.MMO1.EHZ. 2020-08-11T00:50:15.69 0.1 undecidable manual P 14 33.6441 103 -0.41 91
IV.LNSS.HHZ. 2020-08-11T00:50:15.33 0.1 undecidable manual S 269 15.3735 117 0.17 98
IV.GAVE.EHZ. 2020-08-11T00:50:15.01 0.1 positive manual P 290 28.9488 105 -0.18 96
IV.RM33.HNZ. 2020-08-11T00:50:14.10 0.1 undecidable manual S 186 10.6782 126 0.32 96
IV.NRCA.HHZ. 2020-08-11T00:50:14.53 0.1 undecidable manual P 340 26.9508 106 -0.29 94
IV.LNSS.HHZ. 2020-08-11T00:50:13.00 0.1 positive manual P 269 15.3735 117 0.37 94
IV.MTRA.EHZ. 2020-08-11T00:50:13.66 0.1 positive manual P 39 21.6672 110 -0.15 98
IV.CAMP.HHZ. 2020-08-11T00:50:13.04 0.1 positive manual P 117 16.6722 115 0.17 98
IV.SMA1.EHZ. 2020-08-11T00:50:13.71 0.1 undecidable manual S 72 9.1797 130 0.35 96
IV.T1299.HNZ. 2020-08-11T00:50:12.68 0.6 undecidable manual S 54 5.4945 145 0.2 50
IV.SMA1.EHZ. 2020-08-11T00:50:12.11 0.1 positive manual P 72 9.1797 130 0.51 92
IV.RM33.HNZ. 2020-08-11T00:50:12.25 0.1 positive manual P 186 10.6782 126 0.41 94
IV.T1299.HNZ. 2020-08-11T00:50:11.47 0.1 positive manual P 54 5.4945 145 0.38 96
IV.SAMA.EHZ. 2020-08-11T00:50:11.76 3.0 undecidable manual P -8.03 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:2.3 0.00292 1.46 AML other m 2020-08-11T00:50:14.16
IV.SMA1.EHE. ML:2.0 0.0015 0.28 AML other m 2020-08-11T00:50:14.37
IV.LNSS.HHN. ML:1.6 0.000411 0.2 AML other m 2020-08-11T00:50:15.84
IV.LNSS.HNN. ML:1.6 0.00041765235000000003 0.19 AML other m 2020-08-11T00:50:15.84
IV.LNSS.HNE. ML:1.6 0.00036209935000000007 0.17 AML other m 2020-08-11T00:50:15.91
IV.LNSS.HHE. ML:1.6 0.00044750000000000004 0.56 AML other m 2020-08-11T00:50:15.91
IV.CAMP.HHN. ML:1.1 0.00011949999999999999 0.26 AML other m 2020-08-11T00:50:15.86
IV.CAMP.HHE. ML:1.2 0.00016404115 1.46 AML other m 2020-08-11T00:50:16.92
IV.MTRA.HNN. ML:1.6 0.00030243395 1.87 AML other m 2020-08-11T00:50:16.04
IV.MTRA.HNE. ML:1.9 0.0005677578 0.28 AML other m 2020-08-11T00:50:17.27
IV.MTRA.EHE. ML:1.9 0.0005480000000000001 0.26 AML other m 2020-08-11T00:50:17.28
IV.MTRA.EHN. ML:1.6 0.000314 0.44 AML other m 2020-08-11T00:50:17.42
IV.TERO.HHE. ML:1.4 0.000133 0.38 AML other m 2020-08-11T00:50:19.77
IV.TERO.HHN. ML:1.6 0.0001795 0.08 AML other m 2020-08-11T00:50:19.76
IV.TERO.HNN. ML:1.6 0.00019415300000000002 0.08 AML other m 2020-08-11T00:50:19.76
IV.TERO.HNE. ML:1.3 0.00010436005000000001 0.12 AML other m 2020-08-11T00:50:20.10
IV.GAVE.EHE. ML:1.9 0.000435 0.16 AML other m 2020-08-11T00:50:20.17
IV.GAVE.HNE. ML:1.9 0.0004129336 0.17 AML other m 2020-08-11T00:50:20.09
IV.NRCA.HNN. ML:1.7 0.00028891374999999995 0.14 AML other m 2020-08-11T00:50:20.44
IV.NRCA.HHN. ML:1.8 0.0003205 0.14 AML other m 2020-08-11T00:50:20.51
IV.GAVE.EHN. ML:1.7 0.00027800000000000004 0.3 AML other m 2020-08-11T00:50:20.68
IV.NRCA.HNE. ML:1.6 0.0002329425 0.1 AML other m 2020-08-11T00:50:20.84
IV.NRCA.HHE. ML:1.7 0.0002535 0.1 AML other m 2020-08-11T00:50:20.89
IV.FIAM.HHE. ML:0.9 0.0000308 0.9 AML other m 2020-08-11T00:50:22.80
IV.ARRO.EHN. ML:1.2 0.00005835 0.62 AML other m 2020-08-11T00:50:24.05
IV.ARRO.EHE. ML:1.1 0.000052367505 0.18 AML other m 2020-08-11T00:50:24.07
IV.FIAM.HHN. ML:0.8 0.0000226 0.24 AML other m 2020-08-11T00:50:24.54
IV.GUMA.HHE. ML:1.8 0.0001735 1.4 AML other m 2020-08-11T00:50:26.90
IV.GUMA.HHN. ML:1.9 0.000183 1.3 AML other m 2020-08-11T00:50:26.98
IV.FDMO.HHE. ML:1.1 0.00003665 0.14 AML other m 2020-08-11T00:50:27.25
IV.CESX.HHN. ML:1.5 0.000075 1.84 AML other m 2020-08-11T00:50:27.04
IV.FDMO.HHN. ML:1.2 0.00004145 0.38 AML other m 2020-08-11T00:50:28.74
IV.VCEL.EHN. ML:1.5 0.00007845 0.44 AML other m 2020-08-11T00:50:29.82
IV.CESX.HHE. ML:1.3 0.00005025 0.66 AML other m 2020-08-11T00:50:29.61
IV.OFFI.HHE. ML:1.7 0.00013700000000000002 0.4 AML other m 2020-08-11T00:50:29.96
IV.VCEL.EHE. ML:1.5 0.00007290000000000001 1.08 AML other m 2020-08-11T00:50:29.80
IV.MOMA.HHE. ML:1.6 0.00008585000000000001 0.68 AML other m 2020-08-11T00:50:29.52
IV.MOMA.HHN. ML:1.7 0.00010155 1.02 AML other m 2020-08-11T00:50:29.41
IV.T0110.HHN. ML:1.2 0.0000373 0.62 AML other m 2020-08-11T00:50:30.55
IV.OFFI.HHN. ML:1.6 0.00011 0.54 AML other m 2020-08-11T00:50:32.38
IV.ASSB.HHN. ML:1.4 0.000038400000000000005 0.2 AML other m 2020-08-11T00:50:32.61
IV.MNTT.EHN. ML:1.8 0.0001409 0.28 AML other m 2020-08-11T00:50:32.72
IV.ASSB.HHE. ML:1.2 0.0000313 1.18 AML other m 2020-08-11T00:50:32.40
IV.T0110.HHE. ML:1.2 0.0000316 0.5 AML other m 2020-08-11T00:50:33.73
IV.MNTT.EHE. ML:2.0 0.00018895 1.76 AML other m 2020-08-11T00:50:34.03
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