Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 04-04-2019 and time 22:44:41 (Italy) in region 6 km S Amatrice (RI)

A magnitude ML 1.4 earthquake occured in region: 6 km S Amatrice (RI), on

  • 04-04-2019 20:44:41 (UTC)
  • 04-04-2019 22:44:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5800, 13.2770 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.

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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 7 665 5903
Campotosto AQ 8 542 6445
Cittareale RI 11 482 6927
Accumoli RI 13 667 7594
Borbona RI 14 617 8211
Cagnano Amiterno AQ 14 1369 9580
Barete AQ 14 737 10317
Pizzoli AQ 16 4326 14643
Posta RI 16 694 15337
Crognaleto TE 17 1297 16634
Cortino TE 20 656 17290

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of L'Aquila (69753 inhabitants)
36 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
77 Km W of Chieti (51815 inhabitants)
78 Km W of Pescara (121014 inhabitants)
79 Km NE of Guidonia Montecelio (88673 inhabitants)
79 Km NE of Tivoli (56533 inhabitants)
93 Km SE of Perugia (166134 inhabitants)
98 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
Reviewed
Rev100 		ML 1.4 2019-04-04
20:44:41		 42.5797 13.2773 13 2019-04-04
20:51:54		 Sala Sismica INGV-Roma 67260461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-04 20:44:41 ± 0.07
Latitude 42.5797 ± 0.0045
Longitude 13.2773 ± 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 67260461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 459
Semi-minor axis of confidence ellipse (meter) 56
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 184
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28059
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 67260461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-04 20:51:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2019-04-04T20:44:52.17 0.6 undecidable manual S 335 31.1466 95 -0.24 49
IT.CSO1.HGZ. 2019-04-04T20:44:52.27 3.0 undecidable manual P 0.06 0
IV.TERO.HHZ. 2019-04-04T20:44:51.25 0.3 undecidable manual S 80 27.0507 96 -0.09 74
IV.GIGS.HHZ. 2019-04-04T20:44:51.43 0.3 undecidable manual S 120 27.9498 96 -0.13 73
IV.LNSS.HHZ. 2019-04-04T20:44:49.20 0.3 undecidable manual S 278 19.5693 103 -0.14 75
IV.MTRA.EHZ. 2019-04-04T20:44:49.60 0.3 undecidable manual S 26 21.867 100 -0.37 72
IV.GIGS.HHZ. 2019-04-04T20:44:47.41 0.3 undecidable manual P 120 27.9498 96 0.04 76
IV.CAMP.HHZ. 2019-04-04T20:44:47.34 0.3 undecidable manual S 114 11.7771 123 -0.09 75
IV.TERO.HHZ. 2019-04-04T20:44:47.38 1.0 undecidable manual P 80 27.0507 96 0.15 25
IV.NRCA.HHZ. 2019-04-04T20:44:47.88 0.3 undecidable manual P 335 31.1466 95 0.03 75
IV.SMA1.EHZ. 2019-04-04T20:44:46.64 0.3 undecidable manual S 40 7.3815 141 0.09 77
IV.MTRA.EHZ. 2019-04-04T20:44:46.54 0.3 undecidable manual P 26 21.867 100 0.1 75
IV.RM33.EHZ. 2019-04-04T20:44:46.69 0.3 undecidable manual S 213 9.3795 132 -0.23 73
IV.T1299.HNZ. 2019-04-04T20:44:46.08 0.3 undecidable manual S 4 6.0939 147 -0.27 75
IV.LNSS.HHZ. 2019-04-04T20:44:46.22 0.1 positive manual P 278 19.5693 103 0.14 100
IV.CAMP.HHZ. 2019-04-04T20:44:45.26 0.3 undecidable manual P 114 11.7771 123 0.28 74
IV.SMA1.EHZ. 2019-04-04T20:44:44.84 0.1 negative manual P 40 7.3815 141 0.37 97
IV.RM33.EHZ. 2019-04-04T20:44:44.85 1.0 undecidable manual P 213 9.3795 132 0.17 26
IV.T1299.HNZ. 2019-04-04T20:44:44.55 0.3 undecidable manual P 4 6.0939 147 0.19 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TERO.HHN. ML:1.4 0.00012685000000000002 0.28 AML other m 2019-04-04T20:44:51.46
IV.MTRA.EHE. ML:1.3 0.0001159 0.42 AML other m 2019-04-04T20:44:50.96
IV.TERO.HHE. ML:1.3 0.00010275 0.7 AML other m 2019-04-04T20:44:51.40
IV.SMA1.EHE. ML:1.5 0.00039565954999999994 0.2304 AML other m 2019-04-04T20:44:47.01
IV.SMA1.EHN. ML:1.7 0.0006026853500000001 0.1152 AML other m 2019-04-04T20:44:46.98
IV.RM33.HNE. ML:1.4 0.00028220865 0.128 AML other m 2019-04-04T20:44:47.31
IV.RM33.HNN. ML:1.6 0.00044211389999999993 0.1536 AML other m 2019-04-04T20:44:46.80
IV.RM33.EHE. ML:1.4 0.00025980095 0.1408 AML other m 2019-04-04T20:44:47.31
IV.RM33.EHN. ML:1.6 0.00043006375 0.1408 AML other m 2019-04-04T20:44:46.81
IV.LNSS.HNE. ML:1.3 0.000155449 0.4352 AML other m 2019-04-04T20:44:49.57
IV.LNSS.HNN. ML:1.5 0.0002245732 0.1536 AML other m 2019-04-04T20:44:49.35
IV.LNSS.HHE. ML:1.5 0.00020625235000000001 0.1152 AML other m 2019-04-04T20:44:49.41
IV.LNSS.HHN. ML:1.4 0.00020148585 0.1536 AML other m 2019-04-04T20:44:49.34
IV.MTRA.HNE. ML:1.3 0.0001320279 0.8704 AML other m 2019-04-04T20:44:50.00
IV.MTRA.HNN. ML:1.4 0.00017909955 0.4096 AML other m 2019-04-04T20:44:50.60
IV.MTRA.EHN. ML:1.2 0.0001092 1.58 AML other m 2019-04-04T20:44:50.01
IV.TERO.HNN. ML:1.2 0.00007695261 0.832 AML other m 2019-04-04T20:44:51.85
IV.NRCA.HNE. ML:1.5 0.00014415886 0.8576 AML other m 2019-04-04T20:44:52.98
IV.NRCA.HNN. ML:1.6 0.00016383969999999998 1.3824 AML other m 2019-04-04T20:44:52.56
IV.NRCA.HHE. ML:1.1 0.000052863449999999996 0.1408 AML other m 2019-04-04T20:44:53.27
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