Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 04-05-2020 and time 23:29:04 (Italy) in region 5 km E Cittareale (RI)

A magnitude ML 0.9 earthquake occured in region: 5 km E Cittareale (RI), on

  • 04-05-2020 21:29:04 (UTC)
  • 04-05-2020 23:29:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6360, 13.2110 at 11 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
Cittareale RI 5 482 482
Amatrice RI 7 2657 3139
Accumoli RI 7 667 3806
Montereale AQ 13 2581 6387
Capitignano AQ 15 665 7052
Borbona RI 15 617 7669
Posta RI 16 694 8363
Campotosto AQ 16 542 8905
Arquata del Tronto AP 17 1178 10083
Cascia PG 19 3217 13300
Cagnano Amiterno AQ 20 1369 14669
Norcia PG 20 4957 19626

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of L'Aquila (69753 inhabitants)
41 Km W of Teramo (54892 inhabitants)
47 Km E of Terni (111501 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
81 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
84 Km W of Pescara (121014 inhabitants)
85 Km W of Chieti (51815 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
94 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
Bulletin
Rev1000 		ML 0.9 2020-05-04
21:29:04		 42.6362 13.2107 11 2020-11-19
12:36:55		 Bollettino Sismico Italiano INGV 81655061
Reviewed
Rev100 		ML 0.9 2020-05-04
21:29:04		 42.6398 13.2097 14 2020-05-04
21:38:25		 Sala Sismica INGV-Roma 78846361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-04 21:29:04 ± 0.08
Latitude 42.6362 ± 0.0045
Longitude 13.2107 ± 0.0061
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 81655061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 536
Semi-minor axis of confidence ellipse (meter) 204
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 241
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 20
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39570
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 81655061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-04 19:32:51

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 78846361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-04 21:38:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MILN.HNZ. 2020-05-04T21:30:24.40 3.0 undecidable manual Sn -2.81 0
IV.ERC.EHZ. 2020-05-04T21:30:20.44 3.0 undecidable manual Pg 13.27 0
IV.ORI.HHZ. 2020-05-04T21:29:55.88 3.0 undecidable manual Pn 0.74 0
GU.GSCL.HHZ. 2020-05-04T21:29:54.03 3.0 undecidable manual Sn 1.52 0
ST.VARA.EHZ. 2020-05-04T21:29:42.62 3.0 undecidable manual Pn 1.81 0
IV.SRES.HHZ. 2020-05-04T21:29:28.84 3.0 undecidable manual Sg 1.16 0
IV.ROSPO.HHZ. 2020-05-04T21:29:27.09 3.0 undecidable manual Pg 2.15 0
IV.ATFO.HHZ. 2020-05-04T21:29:24.09 3.0 undecidable manual Sg 3.23 0
IV.CERA.HHZ. 2020-05-04T21:29:22.96 3.0 undecidable manual Pg -0.82 0
IV.ATFO.HHZ. 2020-05-04T21:29:16.27 3.0 undecidable manual P 0
IV.TERO.HHZ. 2020-05-04T21:29:15.40 0.6 undecidable manual S 93 32.1456 91 -0.42 45
IV.MC2.EHZ. 2020-05-04T21:29:15.88 0.6 undecidable manual S 357 30.5472 91 0.48 44
IV.MMO1.EHZ. 2020-05-04T21:29:15.34 0.6 undecidable manual S 18 30.6471 91 -0.09 48
IV.MF5.EHZ. 2020-05-04T21:29:13.34 0.3 undecidable manual P 27 43.9227 90 0.37 66
IV.MTRA.EHE. 2020-05-04T21:29:12.23 0.6 undecidable manual S 49 20.1687 92 -0.41 46
IV.NRCA.HHZ. 2020-05-04T21:29:12.89 0.6 undecidable manual S 340 23.2545 91 -0.56 43
IV.CAMP.HHE. 2020-05-04T21:29:12.39 0.6 undecidable manual S 124 19.6692 92 -0.09 49
IV.MC2.EHZ. 2020-05-04T21:29:11.21 0.3 undecidable manual P 357 30.5472 91 0.3 69
IV.ARRO.EHE. 2020-05-04T21:29:11.76 0.3 undecidable manual P 260 36.8298 90 -0.12 70
IV.RM33.EHZ. 2020-05-04T21:29:10.93 0.6 undecidable manual S 179 14.0748 99 -0.08 49
IV.MMO1.EHZ. 2020-05-04T21:29:10.77 0.3 undecidable manual P 18 30.6471 91 -0.16 71
IV.TERO.HHZ. 2020-05-04T21:29:10.95 0.1 undecidable manual P 93 32.1456 91 -0.2 93
IV.SMA1.EHZ. 2020-05-04T21:29:10.22 0.6 undecidable manual S 93 10.1787 120 0.19 49
IV.NRCA.HHZ. 2020-05-04T21:29:09.61 0.1 undecidable manual P 340 23.2545 91 -0.18 95
IV.CAMP.HHE. 2020-05-04T21:29:09.32 0.3 undecidable manual P 124 19.6692 92 0.09 74
IV.T1299.HNE. 2020-05-04T21:29:09.20 0.6 undecidable manual S 92 5.8941 144 0.03 50
IV.MTRA.EHE. 2020-05-04T21:29:09.09 0.3 undecidable manual P 49 20.1687 92 -0.22 71
IV.SMA1.EHZ. 2020-05-04T21:29:08.08 0.1 undecidable manual P 93 10.1787 120 0.26 97
IV.ARVD.HHZ. 2020-05-04T21:29:08.04 3.0 positive manual P -2.03 0
IV.RM33.EHZ. 2020-05-04T21:29:08.45 0.1 undecidable manual P 179 14.0748 99 0.08 100
IV.MMUR.HNZ. 2020-05-04T21:29:08.21 3.0 positive manual P -1.65 0
IV.T1299.HNE. 2020-05-04T21:29:07.49 0.1 undecidable manual P 92 5.8941 144 0.18 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.2 0.000206 0.32 AML other m 2020-05-04T21:29:10.56
IV.SMA1.EHN. ML:1.0 0.0001275 0.3 AML other m 2020-05-04T21:29:10.68
IV.RM33.EHN. ML:0.6 0.0000387 0.4 AML other m 2020-05-04T21:29:11.71
IV.RM33.EHE. ML:0.7 0.00004585 0.16 AML other m 2020-05-04T21:29:11.87
IV.NRCA.HHN. ML:0.8 0.00003985 0.1 AML other m 2020-05-04T21:29:13.49
IV.NRCA.HHE. ML:1.0 0.00005765 0.16 AML other m 2020-05-04T21:29:13.70
IV.TERO.HHE. ML:0.9 0.0000335 0.64 AML other m 2020-05-04T21:29:51.32
IV.TERO.HHN. ML:0.8 0.0000233 0.28 AML other m 2020-05-04T21:29:52.31
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