Earthquake with magnitude of ML 1.6 on date 11-04-2020 and time 16:38:22 (Italy) in region 1 km NW Cittareale (RI)

A magnitude ML 1.6 earthquake occured in region: 1 km NW Cittareale (RI), on

  • 11-04-2020 14:38:22 (UTC)
  • 11-04-2020 16:38:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6280, 13.1490 at 12 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.

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 1 482 482
Accumoli RI 11 667 1149
Amatrice RI 12 2657 3806
Posta RI 12 694 4500
Borbona RI 13 617 5117
Montereale AQ 14 2581 7698
Cascia PG 15 3217 10915
Monteleone di Spoleto PG 16 599 11514
Leonessa RI 17 2435 13949
Capitignano AQ 17 665 14614
Norcia PG 19 4957 19571
Cagnano Amiterno AQ 20 1369 20940
Campotosto AQ 20 542 21482
Poggiodomo PG 20 117 21599

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NW of L'Aquila (69753 inhabitants)
42 Km E of Terni (111501 inhabitants)
46 Km W of Teramo (54892 inhabitants)
52 Km SE of Foligno (57155 inhabitants)
78 Km NE of Guidonia Montecelio (88673 inhabitants)
79 Km NE of Tivoli (56533 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
89 Km E of Viterbo (67173 inhabitants)
89 Km W of Chieti (51815 inhabitants)
89 Km W of Pescara (121014 inhabitants)
98 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
Bulletin
Rev1000
ML 1.6 2020-04-11
14:38:22
42.6275 13.1493 12 2020-07-18
21:08:37
Bollettino Sismico Italiano INGV 79408761
Reviewed
Rev100
ML 1.6 2020-04-11
14:38:22
42.6248 13.149 12 2020-04-11
14:49:57
Sala Sismica INGV-Roma 78109581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-11 14:38:22 ± 0.05
Latitude 42.6275 ± 0.0036
Longitude 13.1493 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79408761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 331
Semi-minor axis of confidence ellipse (meter) 166
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 161
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
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 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.08364
Epicentral distance of station farthest from the epicenter (degree) 0.46585
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 79408761
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-21 13:18:00

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 78109581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-11 14:49:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIAM.HHZ. 2020-04-11T14:38:35.42 0.1 undecidable manual S 184 39.9267 92 -0.09 95
IV.GIGS.HHZ. 2020-04-11T14:38:35.06 0.1 undecidable manual S 119 39.627 92 -0.37 89
IV.TERO.HHZ. 2020-04-11T14:38:34.68 0.1 undecidable manual S 91 37.1295 92 -0.07 95
IV.MMO1.EHZ. 2020-04-11T14:38:33.90 0.1 undecidable manual S 26 33.4443 92 0.12 97
IV.ARRO.EHZ. 2020-04-11T14:38:33.08 0.3 undecidable manual S 260 31.746 92 -0.25 69
IV.MF5.EHZ. 2020-04-11T14:38:31.56 0.1 undecidable manual P 32 47.3193 91 0.47 88
IV.MTRA.EHZ. 2020-04-11T14:38:31.06 0.1 undecidable manual S 55 24.753 94 -0.4 90
IV.CSP1.EHZ. 2020-04-11T14:38:31.89 0.3 undecidable manual P 5 51.7038 91 0.12 70
IV.GIGS.HHZ. 2020-04-11T14:38:30.29 0.1 undecidable manual P 119 39.627 92 0.37 90
IV.NRCA.HHZ. 2020-04-11T14:38:30.63 0.3 undecidable manual S 353 23.0547 94 -0.37 67
IV.FDMO.HHZ. 2020-04-11T14:38:30.73 0.3 undecidable manual P 354 45.621 91 -0.11 69
IV.FIAM.HHZ. 2020-04-11T14:38:29.83 0.1 undecidable manual P 184 39.9267 92 -0.14 93
IV.TERO.HHZ. 2020-04-11T14:38:29.37 0.1 undecidable manual P 91 37.1295 92 -0.16 93
IV.MC2.EHZ. 2020-04-11T14:38:28.84 0.3 undecidable manual P 6 31.6461 92 0.15 72
IV.SMA1.EHZ. 2020-04-11T14:38:28.97 0.3 undecidable manual S 89 15.1737 105 0.04 75
IV.ARRO.EHZ. 2020-04-11T14:38:28.80 0.1 undecidable manual P 260 31.746 92 0.1 97
IV.MMO1.EHZ. 2020-04-11T14:38:28.92 0.1 undecidable manual P 26 33.4443 92 -0.04 95
IV.RM33.EHZ. 2020-04-11T14:38:28.53 0.3 undecidable manual S 158 14.1747 108 -0.14 74
IV.MTRA.EHZ. 2020-04-11T14:38:27.52 0.3 undecidable manual P 55 24.753 94 -0.1 72
IV.LNSS.HHZ. 2020-04-11T14:38:27.47 0.1 undecidable manual S 253 9.2796 128 -0.05 100
IV.CAMP.HHE. 2020-04-11T14:38:27.58 0.3 undecidable manual P 116 23.5542 94 0.14 73
IV.T1299.HNE. 2020-04-11T14:38:27.82 0.1 undecidable manual S 86 10.878 121 -0.05 100
IV.NRCA.HHZ. 2020-04-11T14:38:27.29 0.1 undecidable manual P 353 23.0547 94 -0.07 96
IV.RM33.EHZ. 2020-04-11T14:38:26.11 0.1 undecidable manual P 158 14.1747 108 0.09 99
IV.SMA1.EHZ. 2020-04-11T14:38:26.40 0.1 undecidable manual P 89 15.1737 105 0.23 96
IV.T1299.HNE. 2020-04-11T14:38:25.77 0.1 negative manual P 86 10.878 121 0.22 97
IV.LNSS.HHZ. 2020-04-11T14:38:25.53 0.1 positive manual P 253 9.2796 128 0.18 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HNE. ML:2.1 0.001515 0.14 AML other m 2020-04-11T14:38:27.84
IV.LNSS.HHE. ML:2.1 0.001635 0.12 AML other m 2020-04-11T14:38:27.83
IV.LNSS.HHN. ML:1.8 0.0007674143499999999 0.16 AML other m 2020-04-11T14:38:27.88
IV.LNSS.HNN. ML:1.8 0.0007311333 0.1472 AML other m 2020-04-11T14:38:27.88
IV.RM33.EHN. ML:1.5 0.000288 0.5 AML other m 2020-04-11T14:38:28.92
IV.RM33.HNN. ML:1.5 0.0002935 0.5 AML other m 2020-04-11T14:38:28.92
IV.RM33.EHE. ML:1.4 0.00025883585 0.1792 AML other m 2020-04-11T14:38:29.42
IV.RM33.HNE. ML:1.5 0.0002717679 0.192 AML other m 2020-04-11T14:38:29.52
IV.NRCA.HHN. ML:1.8 0.0004325 0.16 AML other m 2020-04-11T14:38:30.80
IV.NRCA.HHE. ML:2.0 0.0006730000000000001 0.16 AML other m 2020-04-11T14:38:30.87
IV.MTRA.EHE. ML:1.5 0.00018141305000000002 0.2176 AML other m 2020-04-11T14:38:31.29
IV.MTRA.EHN. ML:1.5 0.000165051995 0.1408 AML other m 2020-04-11T14:38:31.38
IV.ARRO.EHN. ML:1.0 0.000049449999999999996 0.76 AML other m 2020-04-11T14:38:34.53
IV.TERO.HHE. ML:1.2 0.000054999999999999995 0.56 AML other m 2020-04-11T14:38:34.59
IV.TERO.HHN. ML:1.3 0.0000765 0.96 AML other m 2020-04-11T14:38:35.04
IV.ARRO.EHE. ML:1.0 0.000041800000000000006 0.5 AML other m 2020-04-11T14:38:35.73
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