Earthquake with magnitude of ML 1.1 on date 21-04-2020 and time 17:05:09 (UTC) in region 2 km S Amatrice (RI)

A magnitude ML 1.1 earthquake occured in region: 2 km S Amatrice (RI), on

  • 21-04-2020 17:05:09 (UTC)
  • 21-04-2020 19:05:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6130, 13.2920 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 2 2657 2657
Campotosto AQ 9 542 3199
Accumoli RI 10 667 3866
Capitignano AQ 10 665 4531
Montereale AQ 11 2581 7112
Cittareale RI 11 482 7594
Crognaleto TE 17 1297 8891
Borbona RI 17 617 9508
Cortino TE 18 656 10164
Cagnano Amiterno AQ 18 1369 11533
Arquata del Tronto AP 18 1178 12711
Barete AQ 18 737 13448
Posta RI 19 694 14142
Pizzoli AQ 20 4326 18468
Acquasanta Terme AP 20 2916 21384

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km N of L'Aquila (69753 inhabitants)
34 Km W of Teramo (54892 inhabitants)
53 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
77 Km W of Pescara (121014 inhabitants)
78 Km W of Chieti (51815 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
83 Km NE of Tivoli (56533 inhabitants)
92 Km SE of Perugia (166134 inhabitants)
100 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 1.1 2020-04-21
17:05:09
42.6128 13.2923 13 2020-04-21
17:14:12
Sala Sismica INGV-Roma 78447121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-21 17:05:09 ± 0.08
Latitude 42.6128 ± 0.0036
Longitude 13.2923 ± 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 78447121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 475
Semi-minor axis of confidence ellipse (meter) 107
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 329
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25631
Number of stations at which the event was observed 22
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 8
Type of magnitude ML
Reference to an origin 78447121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-21 17:14:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SPS2.HHZ. 2020-04-21T17:06:55.05 3.0 undecidable manual Sn -5.92 0
GU.CANO.HHZ. 2020-04-21T17:06:46.88 3.0 undecidable manual Sn -1.94 0
GU.GORR.HHZ. 2020-04-21T17:06:45.50 3.0 undecidable manual Sg 8.4 0
AC.VLO.HHZ. 2020-04-21T17:06:38.48 3.0 undecidable manual Pg 11.91 0
IV.ESML.HHZ. 2020-04-21T17:06:28.11 3.0 negative manual Pn 3.12 0
IV.CRAC.EHZ. 2020-04-21T17:06:08.52 3.0 negative manual Pg 8.09 0
IV.PAOL.HHZ. 2020-04-21T17:06:07.51 3.0 undecidable manual Sg 0.4 0
IV.PTRJ.HNZ. 2020-04-21T17:06:01.10 3.0 undecidable manual Sg 0.82 0
IV.RINC.HHZ. 2020-04-21T17:05:49.98 3.0 undecidable manual Sn -4.92 0
IV.VVLD.HHZ. 2020-04-21T17:05:40.87 3.0 undecidable manual Sg 0.46 0
IV.IMOL.HNZ. 2020-04-21T17:05:39.23 3.0 positive manual Pg 0.74 0
IV.PTRJ.HNZ. 2020-04-21T17:05:36.11 3.0 undecidable manual Pg -0.75 0
IV.RIBO.EHZ.01 2020-04-21T17:05:29.00 3.0 positive manual Pn -3.16 0
IV.TOLF.HHZ. 2020-04-21T17:05:24.56 3.0 undecidable manual Pg -0.85 0
IV.SAP2.. 2020-04-21T17:05:20.26 3.0 undecidable manual P 0
IV.NRCA.HHZ. 2020-04-21T17:05:19.39 0.3 undecidable manual S 329 28.4493 98 -0.06 72
IV.TERO.HHZ. 2020-04-21T17:05:18.45 0.3 undecidable manual S 87 25.4523 100 -0.21 70
IV.LNSS.HNZ. 2020-04-21T17:05:17.22 0.3 undecidable manual S 267 20.5683 105 -0.17 71
IV.MTRA.EHN. 2020-04-21T17:05:16.61 0.1 undecidable manual S 28 18.0708 109 -0.14 96
IV.NRCA.HHZ. 2020-04-21T17:05:15.27 0.3 undecidable manual P 329 28.4493 98 0.09 71
IV.RM33.EHZ. 2020-04-21T17:05:15.39 0.3 undecidable manual S 209 13.1757 122 -0.17 72
IV.LNSS.HNZ. 2020-04-21T17:05:14.08 0.1 undecidable manual P 267 20.5683 105 0.08 97
IV.TERO.HHZ. 2020-04-21T17:05:14.79 0.3 undecidable manual P 87 25.4523 100 0.06 72
IV.SMA1.EHZ. 2020-04-21T17:05:13.89 0.3 undecidable manual S 61 3.996 159 -0.1 74
IV.MTRA.EHN. 2020-04-21T17:05:13.72 0.3 undecidable manual P 28 18.0708 109 0.1 73
IV.RM33.EHZ. 2020-04-21T17:05:13.04 0.1 undecidable manual P 209 13.1757 122 0.1 98
IV.T1299.HNN. 2020-04-21T17:05:12.05 0.1 undecidable manual P 341 2.4975 167 0.09 100
IV.SMA1.EHZ. 2020-04-21T17:05:12.26 0.1 undecidable manual P 61 3.996 159 0.23 97
IV.ARRO.EHZ. 2020-04-21T17:05:11.95 3.0 positive manual P 0.65 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.4 0.00029949999999999996 0.22 AML other m 2020-04-21T17:05:14.26
IV.SMA1.EHN. ML:1.1 0.0001705 0.1 AML other m 2020-04-21T17:05:14.41
IV.RM33.EHN. ML:0.9 0.00007355 0.68 AML other m 2020-04-21T17:05:14.63
IV.RM33.EHE. ML:1.1 0.00012365 0.14 AML other m 2020-04-21T17:05:15.64
IV.NRCA.HHN. ML:1.0 0.0000553 0.42 AML other m 2020-04-21T17:05:19.28
IV.NRCA.HHE. ML:1.3 0.0000897 1.04 AML other m 2020-04-21T17:05:19.56
IV.TERO.HHE. ML:0.8 0.000034506575 1.9072 AML other m 2020-04-21T17:05:18.57
IV.TERO.HHN. ML:0.9 0.000042143819999999996 0.0768 AML other m 2020-04-21T17:05:18.57
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download