Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 30-04-2020 and time 11:34:40 (UTC) in region 4 km N Amatrice (RI)

A magnitude ML 1.4 earthquake occured in region: 4 km N Amatrice (RI), on

  • 30-04-2020 11:34:40 (UTC)
  • 30-04-2020 13:34:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6650, 13.3010 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 4 2657 2657
Accumoli RI 6 667 3324
Arquata del Tronto AP 12 1178 4502
Cittareale RI 13 482 4984
Campotosto AQ 13 542 5526
Acquasanta Terme AP 15 2916 8442
Capitignano AQ 16 665 9107
Montereale AQ 16 2581 11688
Cortino TE 18 656 12344
Valle Castellana TE 18 977 13321
Rocca Santa Maria TE 19 537 13858
Crognaleto TE 20 1297 15155
Montegallo AP 20 523 15678

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km W of Teramo (54892 inhabitants)
36 Km N of L'Aquila (69753 inhabitants)
55 Km E of Terni (111501 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
78 Km W of Pescara (121014 inhabitants)
79 Km W of Chieti (51815 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
88 Km NE of Tivoli (56533 inhabitants)
89 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
Bulletin
Rev1000 		ML 1.4 2020-04-30
11:34:40		 42.665 13.3013 13 2020-07-18
21:08:40		 Bollettino Sismico Italiano INGV 80199851
Reviewed
Rev100 		ML 1.4 2020-04-30
11:34:40		 42.6627 13.2987 13 2020-04-30
11:50:28		 Sala Sismica INGV-Roma 78696271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-30 11:34:40 ± 0.06
Latitude 42.6650 ± 0.0027
Longitude 13.3013 ± 0.0061
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80199851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 530
Semi-minor axis of confidence ellipse (meter) 93
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 260
Circular confidence region, given by single value of horizontal uncertainty (meter) 530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 22
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) 0.44696
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 78696271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-30 11:50:28

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 80199851
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-15 09:02:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIR.HHZ. 2020-04-30T11:35:38.44 3.0 undecidable manual Sg 4.11 0
IV.MAON.HHZ. 2020-04-30T11:35:28.68 3.0 undecidable manual Sn 0.08 0
IV.ARVD.HHZ. 2020-04-30T11:35:09.96 3.0 undecidable manual S -0.13 0
IV.ROSPO.HHZ. 2020-04-30T11:35:05.01 3.0 undecidable manual P 2.55 0
IV.CESI.HHZ. 2020-04-30T11:34:55.96 0.3 undecidable manual S 320 49.617 93 0.12 68
IV.FDMO.HHZ. 2020-04-30T11:34:54.58 0.1 undecidable manual S 337 44.7219 94 0.05 93
IV.MF5.EHZ. 2020-04-30T11:34:53.33 1.0 undecidable manual S 20 38.0286 95 0.57 21
IV.GIGS.HHZ. 2020-04-30T11:34:51.13 0.1 undecidable manual S 137 32.3454 96 -0.1 94
IV.MC2.EHZ. 2020-04-30T11:34:50.41 1.0 undecidable manual S 342 28.8489 98 0.1 24
IV.CESI.HHZ. 2020-04-30T11:34:49.00 0.1 undecidable manual P 320 49.617 93 -0.19 90
IV.TERO.HHZ. 2020-04-30T11:34:49.21 0.1 undecidable manual S 101 25.1526 100 -0.12 95
IV.MMO1.EHZ. 2020-04-30T11:34:49.54 0.3 undecidable manual S 5 26.0517 99 -0.04 72
IV.FDMO.HHZ. 2020-04-30T11:34:48.41 0.1 undecidable manual P 337 44.7219 94 -0.03 93
IV.NRCA.HHZ. 2020-04-30T11:34:48.73 0.1 undecidable manual S 321 24.1536 101 -0.33 91
IV.MF5.EHZ. 2020-04-30T11:34:47.83 0.1 undecidable manual P 20 38.0286 95 0.41 87
IV.RM33.EHZ. 2020-04-30T11:34:47.59 0.1 undecidable manual S 202 18.6702 107 -0.07 97
IV.MC2.EHZ. 2020-04-30T11:34:46.29 0.3 undecidable manual P 342 28.8489 98 0.29 68
IV.GIGS.HHZ. 2020-04-30T11:34:46.48 0.1 undecidable manual P 137 32.3454 96 -0.05 95
IV.MMO1.EHZ. 2020-04-30T11:34:45.54 0.1 undecidable manual P 5 26.0517 99 -0.04 96
IV.NRCA.HHZ. 2020-04-30T11:34:45.17 0.1 undecidable manual P 321 24.1536 101 -0.11 95
IV.MTRA.HNZ. 2020-04-30T11:34:45.89 0.1 undecidable manual S 37 12.7761 122 -0.33 93
IV.TERO.HHZ. 2020-04-30T11:34:45.49 0.1 undecidable manual P 101 25.1526 100 0.05 96
IV.RM33.EHZ. 2020-04-30T11:34:44.63 0.1 positive manual P 202 18.6702 107 0.16 95
IV.SMA1.EHZ. 2020-04-30T11:34:44.73 0.1 undecidable manual S 144 4.6953 155 -0.07 100
IV.MTRA.HNZ. 2020-04-30T11:34:43.72 0.1 undecidable manual P 37 12.7761 122 0.08 98
IV.SMA1.EHZ. 2020-04-30T11:34:43.06 0.1 undecidable manual P 144 4.6953 155 0.24 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.6 0.0005620000000000001 1.68 AML other m 2020-04-30T11:34:44.88
IV.SMA1.EHE. ML:1.7 0.0006625 1.72 AML other m 2020-04-30T11:34:44.95
IV.MTRA.EHN. ML:1.4 0.00025550000000000003 0.54 AML other m 2020-04-30T11:34:46.34
IV.MTRA.EHE. ML:1.4 0.00025 1.24 AML other m 2020-04-30T11:34:46.99
IV.RM33.EHN. ML:1.4 0.0001635 0.32 AML other m 2020-04-30T11:34:47.76
IV.RM33.EHE. ML:1.3 0.000142 0.74 AML other m 2020-04-30T11:34:48.93
IV.NRCA.HHN. ML:1.4 0.0001375 0.14 AML other m 2020-04-30T11:34:48.86
IV.NRCA.HHE. ML:1.6 0.0002325 0.1 AML other m 2020-04-30T11:34:49.00
IV.TERO.HHN. ML:1.5 0.00017999999999999998 0.08 AML other m 2020-04-30T11:34:49.41
IV.TERO.HHE. ML:1.5 0.0001605 0.2 AML other m 2020-04-30T11:34:49.41
IV.CESI.HHE. ML:1.1 0.00003105 1.44 AML other m 2020-04-30T11:34:58.09
IV.CESI.HHN. ML:1.1 0.000029500000000000002 0.96 AML other m 2020-04-30T11:34:58.11
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