Earthquake with magnitude of ML 1.1 on date 31-08-2019 and time 06:02:35 (Italy) in region 3 km SE Amatrice (RI)

A magnitude ML 1.1 earthquake occured in region: 3 km SE Amatrice (RI), on

  • 31-08-2019 04:02:35 (UTC)
  • 31-08-2019 06:02:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6140, 13.3100 at 13 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Amatrice RI 3 2657 2657
Campotosto AQ 8 542 3199
Capitignano AQ 10 665 3864
Accumoli RI 10 667 4531
Montereale AQ 11 2581 7112
Cittareale RI 12 482 7594
Crognaleto TE 16 1297 8891
Cortino TE 16 656 9547
Arquata del Tronto AP 18 1178 10725
Barete AQ 18 737 11462
Borbona RI 18 617 12079
Cagnano Amiterno AQ 18 1369 13448
Acquasanta Terme AP 19 2916 16364
Rocca Santa Maria TE 20 537 16901
Pizzoli AQ 20 4326 21227
Fano Adriano TE 20 296 21523

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km N of L'Aquila (69753 inhabitants)
33 Km W of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
62 Km SE of Foligno (57155 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
76 Km W of Pescara (121014 inhabitants)
76 Km W of Chieti (51815 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km NE of Tivoli (56533 inhabitants)
93 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
Reviewed
Rev100
ML 1.1 2019-08-31
04:02:35
42.6138 13.31 13 2019-08-31
04:08:51
Sala Sismica INGV-Roma 71954681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-31 04:02:35 ± 0.1
Latitude 42.6138 ± 0.0036
Longitude 13.3100 ± 0.0049
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71954681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 394
Semi-minor axis of confidence ellipse (meter) 311
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 72
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28598
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 71954681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-31 04:08:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2019-08-31T04:02:55.13 3.0 undecidable manual P 1.97 0
IV.POFI.HHZ. 2019-08-31T04:02:51.67 3.0 undecidable manual P -0.12 0
IV.MMO1.EHZ. 2019-08-31T04:02:46.23 0.1 undecidable manual S 2 31.746 96 0.23 93
IV.NRCA.HHZ. 2019-08-31T04:02:45.04 0.1 undecidable manual S 327 29.1486 97 -0.28 93
IV.GIGS.HHZ. 2019-08-31T04:02:44.86 0.1 undecidable manual S 130 27.9498 97 -0.13 95
IV.TERO.HHZ. 2019-08-31T04:02:43.84 0.1 undecidable manual S 88 24.0537 99 -0.12 96
IV.MTRA.EHZ. 2019-08-31T04:02:42.00 0.1 undecidable manual S 24 17.3715 108 -0.23 96
IV.NRCA.HHZ. 2019-08-31T04:02:41.11 0.6 negative manual P 327 29.1486 97 0.13 48
IV.MMO1.EHZ. 2019-08-31T04:02:41.37 1.0 undecidable manual P 2 31.746 96 0 24
IV.RM33.EHZ. 2019-08-31T04:02:41.32 0.1 undecidable manual S 214 13.9749 117 -0.09 99
IV.GIGS.HHZ. 2019-08-31T04:02:41.01 0.6 undecidable manual P 130 27.9498 97 0.22 47
IV.TERO.HHZ. 2019-08-31T04:02:40.44 0.6 undecidable manual P 88 24.0537 99 0.24 47
IV.MTRA.EHZ. 2019-08-31T04:02:39.35 0.3 undecidable manual P 24 17.3715 108 0.15 73
IV.SMA1.EHZ. 2019-08-31T04:02:39.32 0.1 undecidable manual S 48 2.7972 165 -0.17 100
IV.RM33.EHZ. 2019-08-31T04:02:38.97 0.6 negative manual P 214 13.9749 117 0.25 48
IV.SMA1.EHZ. 2019-08-31T04:02:37.88 0.1 negative manual P 48 2.7972 165 0.26 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.3 0.0002525 0.4 AML other m 2019-08-31T04:02:39.73
IV.SMA1.EHN. ML:1.1 0.000179 0.44 AML other m 2019-08-31T04:02:39.75
IV.RM33.EHN. ML:1.1 0.0001129 0.34 AML other m 2019-08-31T04:02:41.68
IV.RM33.EHE. ML:1.3 0.00017299999999999998 0.18 AML other m 2019-08-31T04:02:41.85
IV.MTRA.EHN. ML:1.2 0.000127 0.24 AML other m 2019-08-31T04:02:42.13
IV.MTRA.EHE. ML:1.0 0.0000807 0.56 AML other m 2019-08-31T04:02:42.28
IV.TERO.HHN. ML:0.9 0.00004675 1.32 AML other m 2019-08-31T04:02:43.98
IV.TERO.HHE. ML:0.9 0.0000461 1.86 AML other m 2019-08-31T04:02:44.05
IV.NRCA.HHE. ML:0.8 0.0000276 1.48 AML other m 2019-08-31T04:02:46.85
IV.NRCA.HHN. ML:0.6 0.00001785 0.62 AML other m 2019-08-31T04:02:47.66
IV.ARRO.EHE. ML:1.3 0.00006379999999999999 0.22 AML other m 2019-08-31T04:02:57.18
IV.ARRO.EHN. ML:1.0 0.00003135 0.5 AML other m 2019-08-31T04:02:59.48
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