Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 09-04-2019 and time 03:52:54 (Italy) in region 6 km SW Amatrice (RI)

A magnitude ML 0.9 earthquake occured in region: 6 km SW Amatrice (RI), on

  • 09-04-2019 01:52:54 (UTC)
  • 09-04-2019 03:52:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5840, 13.2520 at 11 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.

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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 6 2657 2657
Montereale AQ 7 2581 5238
Capitignano AQ 8 665 5903
Cittareale RI 8 482 6385
Campotosto AQ 10 542 6927
Accumoli RI 12 667 7594
Borbona RI 13 617 8211
Cagnano Amiterno AQ 14 1369 9580
Posta RI 14 694 10274
Barete AQ 15 737 11011
Pizzoli AQ 17 4326 15337
Crognaleto TE 19 1297 16634

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of L'Aquila (69753 inhabitants)
38 Km W of Teramo (54892 inhabitants)
50 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
74 Km W of Montesilvano (53738 inhabitants)
78 Km NE of Guidonia Montecelio (88673 inhabitants)
78 Km NE of Tivoli (56533 inhabitants)
80 Km W of Chieti (51815 inhabitants)
80 Km W of Pescara (121014 inhabitants)
91 Km SE of Perugia (166134 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
99 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
Reviewed
Rev100 		ML 0.9 2019-04-09
01:52:54		 42.5842 13.252 11 2019-04-09
02:25:33		 Sala Sismica INGV-Roma 67392901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-09 01:52:54 ± 0.06
Latitude 42.5842 ± 0.0036
Longitude 13.2520 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 67392901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 446
Semi-minor axis of confidence ellipse (meter) 370
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 200
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.35793
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 67392901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-09 02:25:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MC2.EHE. 2019-04-09T01:53:07.88 0.6 undecidable manual S 352 36.6411 50 0.82 38
IV.MMO1.EHZ. 2019-04-09T01:53:06.80 0.6 undecidable manual S 10 35.4423 50 0.05 48
IV.GIGS.HHE. 2019-04-09T01:53:05.06 0.1 undecidable manual S 119 29.9478 50 -0.22 94
IV.GAVE.EHZ. 2019-04-09T01:53:05.94 0.6 undecidable manual S 292 31.5462 50 0.24 47
IV.TERO.HHZ. 2019-04-09T01:53:04.91 0.3 undecidable manual S 81 29.0487 50 -0.12 72
IV.NRCA.HHZ. 2019-04-09T01:53:04.96 0.3 undecidable manual S 338 29.8479 50 -0.29 69
IV.ARRO.EHZ. 2019-04-09T01:53:02.25 0.3 undecidable manual P 269 39.7269 50 -0.07 71
IV.MC2.EHE. 2019-04-09T01:53:02.25 0.6 undecidable manual P 352 36.6411 50 0.4 45
IV.MMO1.EHZ. 2019-04-09T01:53:01.63 0.6 undecidable manual P 10 35.4423 50 -0.04 48
IV.LNSS.HHZ. 2019-04-09T01:53:01.71 0.3 undecidable manual S 277 17.3715 121 -0.09 74
IV.GAVE.EHZ. 2019-04-09T01:53:00.87 0.3 undecidable manual P 292 31.5462 50 -0.19 71
MN.AQU.HHE. 2019-04-09T01:53:00.99 0.3 undecidable manual P 154 28.4493 50 0.41 68
IV.GIGS.HHE. 2019-04-09T01:53:00.76 0.1 undecidable manual P 119 29.9478 50 -0.06 97
IV.TERO.HHZ. 2019-04-09T01:53:00.71 0.6 negative manual P 81 29.0487 50 0.04 49
IV.NRCA.HHZ. 2019-04-09T01:53:00.60 0.1 undecidable manual P 338 29.8479 50 -0.2 94
IV.RM33.EHZ. 2019-04-09T01:52:59.33 0.1 undecidable manual S 200 8.88 140 -0.19 98
IV.SMA1.EHZ. 2019-04-09T01:52:59.28 0.1 undecidable manual S 53 8.4804 141 -0.17 98
IV.MTRA.EHE. 2019-04-09T01:52:59.34 0.3 undecidable manual P 32 22.4553 50 -0.32 70
IV.T1299.EHE. 2019-04-09T01:52:58.75 0.3 undecidable manual S 24 6.0939 150 -0.22 73
IV.LNSS.HHZ. 2019-04-09T01:52:58.82 0.1 positive manual P 277 17.3715 121 0.01 100
IV.CAMP.HHE. 2019-04-09T01:52:58.49 0.1 undecidable manual P 113 13.875 127 0.26 96
IV.SMA1.EHZ. 2019-04-09T01:52:57.80 0.1 positive manual P 53 8.4804 141 0.35 95
IV.T1299.EHE. 2019-04-09T01:52:57.28 0.1 undecidable manual P 24 6.0939 150 0.11 100
IV.RM33.EHZ. 2019-04-09T01:52:57.64 0.3 undecidable manual P 200 8.88 140 0.15 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:1.1 0.0001531819 0.1808 AML other m 2019-04-09T01:52:59.95
IV.RM33.EHN. ML:0.9 0.00009575667 0.1408 AML other m 2019-04-09T01:53:00.20
IV.RM33.HNE. ML:1.1 0.00017994084999999998 0.2016 AML other m 2019-04-09T01:52:59.94
IV.SMA1.EHE. ML:1.2 0.00019014399999999997 0.3392 AML other m 2019-04-09T01:53:00.15
IV.SMA1.EHN. ML:1.2 0.00022217475000000002 0.2592 AML other m 2019-04-09T01:53:00.15
IV.LNSS.HNE. ML:1.0 0.000086399083 0.2896 AML other m 2019-04-09T01:53:02.27
IV.LNSS.HHE. ML:0.9 0.000062318355 0.24 AML other m 2019-04-09T01:53:01.87
IV.LNSS.HHN. ML:0.9 0.00006822308 0.2592 AML other m 2019-04-09T01:53:02.51
IV.NRCA.HHE. ML:1.0 0.00005147454999999999 0.1008 AML other m 2019-04-09T01:53:05.71
IV.NRCA.HHN. ML:1.0 0.00004397304 0.1008 AML other m 2019-04-09T01:53:06.75
IV.TERO.HHN. ML:0.5 0.00001680064 0.1392 AML other m 2019-04-09T01:53:06.90
IV.GAVE.EHE. ML:0.9 0.000034376619999999993 0.1808 AML other m 2019-04-09T01:53:06.58
IV.GAVE.EHN. ML:0.8 0.000028207355 0.2 AML other m 2019-04-09T01:53:09.33
IV.ARRO.EHE. ML:0.5 0.000011751451 0.1792 AML other m 2019-04-09T01:53:11.41
IV.ARRO.EHN. ML:0.8 0.000019216785 0.2 AML other m 2019-04-09T01:53:11.48
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