Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 04-01-2020 and time 22:58:56 (UTC) in region 2 km SE Cittareale (RI)

A magnitude ML 1.6 earthquake occured in region: 2 km SE Cittareale (RI), on

  • 04-01-2020 22:58:56 (UTC)
  • 04-01-2020 23:58:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6050, 13.1710 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
Cittareale RI 2 482 482
Amatrice RI 10 2657 3139
Borbona RI 11 617 3756
Posta RI 11 694 4450
Montereale AQ 11 2581 7031
Accumoli RI 12 667 7698
Capitignano AQ 14 665 8363
Cagnano Amiterno AQ 17 1369 9732
Campotosto AQ 17 542 10274
Leonessa RI 18 2435 12709
Cascia PG 18 3217 15926
Monteleone di Spoleto PG 19 599 16525
Barete AQ 19 737 17262
Micigliano RI 19 127 17389

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of L'Aquila (69753 inhabitants)
43 Km E of Terni (111501 inhabitants)
44 Km W of Teramo (54892 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
76 Km NE of Guidonia Montecelio (88673 inhabitants)
78 Km NE of Tivoli (56533 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
87 Km W of Chieti (51815 inhabitants)
87 Km W of Pescara (121014 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
97 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 2020-01-04
22:58:56		 42.6047 13.1707 13 2020-07-18
21:08:19		 Bollettino Sismico Italiano INGV 76295431
Reviewed
Rev100 		ML 1.7 2020-01-04
22:58:56		 42.6147 13.1733 14 2020-01-04
23:06:46		 Sala Sismica INGV-Roma 75253221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-04 22:58:56 ± 0.11
Latitude 42.6047 ± 0.0054
Longitude 13.1707 ± 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 76295431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 561
Semi-minor axis of confidence ellipse (meter) 342
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 28
Circular confidence region, given by single value of horizontal uncertainty (meter) 560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.55308
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 75253221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-04 23:06:46

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 76295431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-06 15:07:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRES.EHZ. 2020-01-04T23:00:36.69 3.0 undecidable manual Sn -6.42 0
MN.TRI.HHZ. 2020-01-04T23:00:28.92 3.0 undecidable manual Sg 11.8 0
IV.FVI.HHZ. 2020-01-04T23:00:23.31 3.0 undecidable manual Sn -9.99 0
IV.MBAL.EHZ. 2020-01-04T23:00:20.25 3.0 undecidable manual Sn -5.24 0
IV.ZONE.HHZ. 2020-01-04T23:00:18.03 3.0 undecidable manual Sn -9.99 0
IV.VARE.HHZ. 2020-01-04T22:59:47.99 3.0 negative manual Pn -9.99 0
IV.MAGA.HHZ. 2020-01-04T22:59:46.70 3.0 undecidable manual Pg -0.81 0
IV.MCRV.HHZ. 2020-01-04T22:59:32.09 3.0 undecidable manual Pg 0.81 0
IV.OFFI.HHZ. 2020-01-04T22:59:16.46 0.3 undecidable manual S 49 55.6998 93 2.52 16
IV.SRES.HHZ. 2020-01-04T22:59:13.48 3.0 undecidable manual Sn -2.18 0
IV.CSP1.EHZ. 2020-01-04T22:59:13.77 0.3 undecidable manual S 3 54.1014 93 0.25 65
IV.MF5.EHZ. 2020-01-04T22:59:12.85 0.3 undecidable manual S 29 48.618 93 0.8 56
IV.FDMO.HHZ. 2020-01-04T22:59:11.73 0.6 undecidable manual S 352 48.4182 93 -0.27 45
IV.SENI.HNZ. 2020-01-04T22:59:11.71 3.0 undecidable manual Pg -1.21 0
IV.GIGS.HHZ. 2020-01-04T22:59:08.73 0.3 undecidable manual S 117 36.9297 95 -0.22 67
IV.MMO1.EHZ. 2020-01-04T22:59:08.09 0.3 undecidable manual S 21 35.0427 95 -0.36 67
IV.MNTT.EHZ. 2020-01-04T22:59:08.27 0.1 undecidable manual P 34 61.3941 92 0.78 74
IV.ARRO.EHZ. 2020-01-04T22:59:08.00 0.1 undecidable manual S 265 33.2445 96 0.05 94
IV.OFFI.HHZ. 2020-01-04T22:59:07.32 0.1 undecidable manual P 49 55.6998 93 0.7 78
IV.CSP1.EHZ. 2020-01-04T22:59:06.20 0.1 undecidable manual P 3 54.1014 93 -0.17 90
IV.MF5.EHZ. 2020-01-04T22:59:05.79 0.1 undecidable manual P 29 48.618 93 0.27 89
IV.NRCA.HHZ. 2020-01-04T22:59:05.28 0.3 undecidable manual S 350 25.752 99 -0.72 62
IV.GAVE.EHZ. 2020-01-04T22:59:05.42 0.1 undecidable manual S 293 24.5532 100 -0.25 95
IV.FDMO.HHZ. 2020-01-04T22:59:05.24 0.1 undecidable manual P 352 48.4182 93 -0.25 90
IV.MTRA.EHZ. 2020-01-04T22:59:05.16 0.1 undecidable manual S 47 24.9528 100 -0.62 83
IV.CAMP.HHZ. 2020-01-04T22:59:04.65 0.1 undecidable manual S 111 20.9679 104 -0.07 94
IV.MMO1.EHZ. 2020-01-04T22:59:03.20 0.1 undecidable manual P 21 35.0427 95 -0.25 91
IV.ARRO.EHZ. 2020-01-04T22:59:03.18 0.1 positive manual P 265 33.2445 96 0.02 96
IV.GIGS.HHZ. 2020-01-04T22:59:03.56 0.1 undecidable manual P 117 36.9297 95 -0.17 91
IV.RM33.EHZ. 2020-01-04T22:59:02.45 0.1 undecidable manual S 161 11.1777 128 0.09 100
IV.SMA1.EHZ. 2020-01-04T22:59:02.93 0.1 undecidable manual S 78 13.7751 119 0 98
IV.LNSS.HHZ. 2020-01-04T22:59:02.20 0.1 undecidable manual S 269 10.6782 130 -0.04 100
IV.CAMP.HHZ. 2020-01-04T22:59:01.38 0.1 positive manual P 111 20.9679 104 0.09 98
IV.MTRA.EHZ. 2020-01-04T22:59:01.64 0.1 positive manual P 47 24.9528 100 -0.26 92
IV.NRCA.HHZ. 2020-01-04T22:59:01.72 0.1 negative manual P 350 25.752 99 -0.31 92
IV.T1299.HNZ. 2020-01-04T22:59:01.79 0.1 undecidable manual S 70 9.6792 133 -0.26 94
IV.GAVE.EHZ. 2020-01-04T22:59:01.81 0.1 positive manual P 293 24.5532 100 -0.03 98
IV.LNSS.HHZ. 2020-01-04T22:59:00.00 0.1 positive manual P 269 10.6782 130 0.14 97
IV.RM33.EHZ. 2020-01-04T22:59:00.19 0.1 positive manual P 161 11.1777 128 0.25 96
IV.SMA1.EHZ. 2020-01-04T22:59:00.46 0.1 positive manual P 78 13.7751 119 0.2 97
IV.T1299.HNZ. 2020-01-04T22:58:59.83 0.1 positive manual P 70 9.6792 133 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:1.8 0.000658 0.3 AML other m 2020-01-04T22:59:02.46
IV.LNSS.HNN. ML:1.8 0.0006605 0.32 AML other m 2020-01-04T22:59:02.48
IV.LNSS.HHE. ML:2.1 0.00125 0.14 AML other m 2020-01-04T22:59:02.42
IV.LNSS.HNE. ML:2.0 0.001165 0.14 AML other m 2020-01-04T22:59:02.43
IV.RM33.EHN. ML:1.4 0.000257 0.24 AML other m 2020-01-04T22:59:02.69
IV.RM33.EHE. ML:1.3 0.0001995 0.12 AML other m 2020-01-04T22:59:03.11
IV.SMA1.EHN. ML:1.4 0.000245 0.22 AML other m 2020-01-04T22:59:03.30
IV.SMA1.EHE. ML:1.8 0.000592 0.28 AML other m 2020-01-04T22:59:03.26
IV.MTRA.EHN. ML:1.4 0.00014700000000000002 0.18 AML other m 2020-01-04T22:59:05.26
IV.NRCA.HHE. ML:2.0 0.0005335000000000001 0.12 AML other m 2020-01-04T22:59:05.40
IV.NRCA.HHN. ML:1.6 0.00023899999999999998 0.9 AML other m 2020-01-04T22:59:05.57
IV.GAVE.EHN. ML:1.7 0.0003 0.26 AML other m 2020-01-04T22:59:05.61
IV.GAVE.EHE. ML:1.7 0.00029700000000000006 0.16 AML other m 2020-01-04T22:59:05.62
IV.MTRA.EHE. ML:1.4 0.00014049999999999997 0.56 AML other m 2020-01-04T22:59:06.24
IV.ARRO.EHE. ML:0.9 0.0000276 0.62 AML other m 2020-01-04T22:59:10.80
IV.ARRO.EHN. ML:0.9 0.0000356 0.76 AML other m 2020-01-04T22:59:10.94
IV.FDMO.HHE. ML:1.0 0.000026700000000000002 0.6 AML other m 2020-01-04T22:59:12.58
IV.FDMO.HHN. ML:0.9 0.00002166 1.04 AML other m 2020-01-04T22:59:13.37
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