Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 11-08-2019 and time 21:36:44 (UTC) in region 1 km NW Amatrice (RI)

A magnitude ML 1.6 earthquake occured in region: 1 km NW Amatrice (RI), on

  • 11-08-2019 21:36:44 (UTC)
  • 11-08-2019 23:36:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6380, 13.2750 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.

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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 1 2657 2657
Accumoli RI 7 667 3324
Cittareale RI 10 482 3806
Campotosto AQ 12 542 4348
Montereale AQ 13 2581 6929
Capitignano AQ 13 665 7594
Arquata del Tronto AP 15 1178 8772
Borbona RI 18 617 9389
Acquasanta Terme AP 18 2916 12305
Posta RI 19 694 12999
Cortino TE 19 656 13655
Crognaleto TE 20 1297 14952

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of L'Aquila (69753 inhabitants)
35 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
79 Km W of Pescara (121014 inhabitants)
80 Km W of Chieti (51815 inhabitants)
84 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km NE of Tivoli (56533 inhabitants)
89 Km SE of Perugia (166134 inhabitants)
99 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 2019-08-11
21:36:44		 42.6375 13.2748 13 2019-11-13
14:31:06		 Bollettino Sismico Italiano INGV 73249861
Reviewed
Rev100 		ML 1.5 2019-08-11
21:36:44		 42.6387 13.2737 13 2019-08-11
21:42:03		 Sala Sismica INGV-Roma 71394251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-11 21:36:44 ± 0.04
Latitude 42.6375 ± 0.0018
Longitude 13.2748 ± 0.0037
Depth (km) 13 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73249861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 277
Semi-minor axis of confidence ellipse (meter) 84
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.70327
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 30
Type of magnitude ML
Reference to an origin 71394251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-11 21:42:03

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 35
Type of magnitude ML
Reference to an origin 73249861
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-14 12:22:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.APEC.HNZ. 2019-08-11T21:37:04.31 3.0 undecidable manual P -0.09 0
IV.FDMO.HHZ. 2019-08-11T21:36:59.96 0.3 undecidable manual S 341 46.8198 93 0.23 68
IV.FIAM.HHZ. 2019-08-11T21:36:58.92 0.6 undecidable manual S 198 42.9237 93 0.22 46
IV.EL6.EHZ. 2019-08-11T21:36:58.21 0.3 undecidable manual P 350 78.0663 91 0 67
IV.ASSB.HHZ. 2019-08-11T21:36:56.97 0.3 undecidable manual P 312 67.2771 92 0.41 63
IV.MC2.EHZ. 2019-08-11T21:36:55.91 0.3 undecidable manual S 347 31.1466 95 0.34 69
IV.GAVE.EHZ. 2019-08-11T21:36:55.48 0.3 undecidable manual S 281 31.6461 95 -0.21 70
IV.T0110.HHZ. 2019-08-11T21:36:55.57 0.3 undecidable manual P 138 61.0944 92 -0.04 69
IV.MMO1.EHZ. 2019-08-11T21:36:55.04 0.6 undecidable manual S 8 29.3484 96 -0.04 49
IV.GIGS.HHZ. 2019-08-11T21:36:55.56 0.6 undecidable manual S 130 31.8459 95 -0.17 48
IV.TERO.HHZ. 2019-08-11T21:36:54.13 0.6 undecidable manual S 93 26.9508 97 -0.3 47
IV.MNTT.EHZ. 2019-08-11T21:36:54.63 1.0 undecidable manual P 29 53.8017 92 0.15 23
IV.FDMO.HHZ. 2019-08-11T21:36:53.26 0.1 undecidable manual P 341 46.8198 93 -0.15 92
IV.CSP1.EHZ. 2019-08-11T21:36:53.97 3.0 positive manual P 0.02 0
IV.CESI.HHE. 2019-08-11T21:36:53.87 0.3 undecidable manual P 324 50.7159 93 -0.13 69
IV.NRCA.HHZ. 2019-08-11T21:36:53.67 0.6 undecidable manual S 329 25.3524 98 -0.35 46
IT.MTCL.HGZ. 2019-08-11T21:36:52.97 0.3 undecidable manual P 331 45.4212 93 -0.23 68
IV.LNSS.HHZ. 2019-08-11T21:36:52.40 0.3 undecidable manual S 259 19.5693 103 -0.09 73
IV.FIAM.HHZ. 2019-08-11T21:36:52.80 0.3 undecidable manual P 198 42.9237 93 -0.02 72
IV.MF5.EHN. 2019-08-11T21:36:52.97 0.3 undecidable manual P 21 41.625 93 0.35 67
IV.MTRA.EHZ. 2019-08-11T21:36:51.39 0.6 undecidable manual S 37 16.5723 109 -0.33 47
MN.AQU.HNN. 2019-08-11T21:36:51.36 0.3 undecidable manual P 161 33.2445 95 0.05 72
IV.CAMP.HHZ. 2019-08-11T21:36:51.41 0.6 undecidable manual S 136 15.7731 111 -0.11 49
IV.MC2.EHZ. 2019-08-11T21:36:51.02 0.1 positive manual P 347 31.1466 95 0.02 97
IV.RM33.EHZ. 2019-08-11T21:36:51.36 0.3 undecidable manual S 199 15.0738 113 0 75
IV.MMO1.EHZ. 2019-08-11T21:36:50.67 0.1 positive manual P 8 29.3484 96 -0.05 97
IV.NRCA.HHZ. 2019-08-11T21:36:50.05 0.1 positive manual P 329 25.3524 98 -0.06 97
IV.GIGS.HHZ. 2019-08-11T21:36:50.90 0.1 negative manual P 130 31.8459 95 -0.2 94
IV.TERO.HHZ. 2019-08-11T21:36:50.31 0.1 undecidable manual P 93 26.9508 97 -0.04 98
IV.GAVE.EHZ. 2019-08-11T21:36:50.81 0.3 undecidable manual P 281 31.6461 95 -0.26 69
IV.LNSS.HHZ. 2019-08-11T21:36:49.25 0.1 positive manual P 259 19.5693 103 0.03 99
IV.SMA1.EHZ. 2019-08-11T21:36:49.35 0.6 undecidable manual S 99 4.995 153 -0.01 51
IV.T1299.HNZ. 2019-08-11T21:36:49.04 0.3 undecidable manual S 121 0.6993 176 -0.02 76
IV.RM33.EHZ. 2019-08-11T21:36:48.75 0.1 positive manual P 199 15.0738 113 0.18 97
IV.MTRA.EHZ. 2019-08-11T21:36:48.79 0.1 positive manual P 37 16.5723 109 0.01 100
IV.CAMP.HHZ. 2019-08-11T21:36:48.78 0.1 negative manual P 136 15.7731 111 0.12 98
IV.SMA1.EHZ. 2019-08-11T21:36:47.66 0.1 undecidable manual P 99 4.995 153 0.23 98
IV.T1299.HNZ. 2019-08-11T21:36:47.44 0.1 negative manual P 121 0.6993 176 0.19 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.6 0.0004714782 0.0896 AML other m 2019-08-11T21:36:49.47
IV.SMA1.EHE. ML:1.7 0.0006678129 0.1152 AML other m 2019-08-11T21:36:49.63
IV.RM33.HNE. ML:1.8 0.00049957895 0.192 AML other m 2019-08-11T21:36:52.07
IV.RM33.EHE. ML:1.8 0.00049874065 0.1792 AML other m 2019-08-11T21:36:52.07
IV.RM33.EHN. ML:1.5 0.0002915934 0.1408 AML other m 2019-08-11T21:36:51.86
IV.RM33.HNN. ML:1.5 0.0002811529 0.1408 AML other m 2019-08-11T21:36:51.79
IV.MTRA.EHE. ML:1.8 0.0005705211 0.2432 AML other m 2019-08-11T21:36:52.42
IV.MTRA.HNE. ML:1.8 0.0005789679999999999 0.2304 AML other m 2019-08-11T21:36:52.40
IV.MTRA.EHN. ML:1.8 0.00059682675 0.2304 AML other m 2019-08-11T21:36:51.87
IV.MTRA.HNN. ML:1.9 0.00060749305 0.2304 AML other m 2019-08-11T21:36:51.87
IV.LNSS.HNE. ML:1.3 0.000152178495 0.1536 AML other m 2019-08-11T21:36:52.59
IV.LNSS.HHE. ML:1.4 0.00018103045 0.1664 AML other m 2019-08-11T21:36:52.58
IV.LNSS.HHN. ML:1.3 0.000152770297 0.2432 AML other m 2019-08-11T21:36:52.72
IV.LNSS.HNN. ML:1.4 0.00019990592500000002 0.7936 AML other m 2019-08-11T21:36:51.39
IV.NRCA.HNN. ML:1.9 0.0004149419 0.128 AML other m 2019-08-11T21:36:53.92
IV.NRCA.HHE. ML:1.9 0.0004613885 0.2048 AML other m 2019-08-11T21:36:53.93
IV.NRCA.HNE. ML:1.8 0.00039219674999999997 0.2048 AML other m 2019-08-11T21:36:53.93
IV.NRCA.HHN. ML:1.9 0.00041152245 0.128 AML other m 2019-08-11T21:36:53.98
IV.TERO.HHN. ML:2.0 0.00046973935 0.064 AML other m 2019-08-11T21:36:54.26
IV.TERO.HHE. ML:1.7 0.00027000945 0.1024 AML other m 2019-08-11T21:36:54.26
IV.TERO.HNN. ML:1.6 0.0002259354 0.1024 AML other m 2019-08-11T21:36:54.26
IV.TERO.HNE. ML:1.8 0.00035740075 1.408 AML other m 2019-08-11T21:36:54.32
IV.GAVE.EHN. ML:1.5 0.000143944275 0.2816 AML other m 2019-08-11T21:36:55.81
IV.GAVE.HNN. ML:1.5 0.00013953618500000002 0.7296 AML other m 2019-08-11T21:36:54.60
IV.GAVE.HNE. ML:1.5 0.000139831865 0.3712 AML other m 2019-08-11T21:36:57.25
IV.GAVE.EHE. ML:1.3 0.00007947157499999999 0.1664 AML other m 2019-08-11T21:36:56.79
IV.FDMO.HHN. ML:1.2 0.00004334895 0.2944 AML other m 2019-08-11T21:37:01.38
IV.FDMO.HHE. ML:1.2 0.00004652357 0.2048 AML other m 2019-08-11T21:37:02.24
IV.MNTT.EHN. ML:1.5 0.00007193149000000001 0.3328 AML other m 2019-08-11T21:37:06.20
IV.T0110.HHE. ML:1.2 0.000035576195000000006 0.3968 AML other m 2019-08-11T21:37:10.59
IV.T0110.HHN. ML:1.1 0.0000266758 0.32 AML other m 2019-08-11T21:37:05.95
IV.ASSB.HHN. ML:1.4 0.000043331735 0.256 AML other m 2019-08-11T21:37:07.47
IV.ASSB.HHE. ML:1.2 0.000028909310000000002 0.1792 AML other m 2019-08-11T21:37:06.98
IV.EL6.EHE. ML:1.2 0.00002562993 0.2176 AML other m 2019-08-11T21:37:12.84
IV.EL6.EHN. ML:1.3 0.000030374986999999997 0.1664 AML other m 2019-08-11T21:37:12.12
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