Earthquake with magnitude of ML 1.2 on date 20-08-2019 and time 11:01:13 (Italy) in region 9 km NW Cittareale (RI)

A magnitude ML 1.2 earthquake occured in region: 9 km NW Cittareale (RI), on

  • 20-08-2019 09:01:13 (UTC)
  • 20-08-2019 11:01:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.69, 13.12 at 14 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
Cittareale RI 9 482 482
Cascia PG 9 3217 3699
Accumoli RI 11 667 4366
Norcia PG 11 4957 9323
Monteleone di Spoleto PG 14 599 9922
Poggiodomo PG 15 117 10039
Amatrice RI 16 2657 12696
Arquata del Tronto AP 17 1178 13874
Posta RI 19 694 14568
Leonessa RI 19 2435 17003
Borbona RI 20 617 17620

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Terni (111501 inhabitants)
44 Km NW of L'Aquila (69753 inhabitants)
45 Km SE of Foligno (57155 inhabitants)
48 Km W of Teramo (54892 inhabitants)
75 Km SE of Perugia (166134 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km NE of Tivoli (56533 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
89 Km E of Viterbo (67173 inhabitants)
93 Km W of Pescara (121014 inhabitants)
94 Km W of Chieti (51815 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.2 2019-08-20
09:01:13
42.69 13.12 14 2019-08-20
09:09:09
Sala Sismica INGV-Roma 71644511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-20 09:01:13 ± 0.08
Latitude 42.69 ± 0.00
Longitude 13.12 ± 0.00
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71644511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 278
Semi-minor axis of confidence ellipse (meter) 120
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 192
Circular confidence region, given by single value of horizontal uncertainty (meter) 280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.19605
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 71644511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-20 09:09:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
SI.KOSI.HHZ. 2019-08-20T09:02:56.18 3.0 undecidable manual Sg 10.39 0
IV.TDS.HHZ. 2019-08-20T09:02:49.30 3.0 undecidable manual Sn 0.43 0
IV.ESLN.HHZ. 2019-08-20T09:02:37.22 3.0 undecidable manual Pg 19.16 0
IV.CADC.HNZ. 2019-08-20T09:02:34.76 3.0 undecidable manual Sn 2.14 0
MN.TRI.HHZ. 2019-08-20T09:02:28.34 3.0 undecidable manual Sn 1.34 0
AC.VLO.HHZ. 2019-08-20T09:02:20.31 3.0 negative manual Pn -1.45 0
CH.BERNI.HHZ. 2019-08-20T09:02:17.02 3.0 negative manual Pg 12.92 0
IV.MSAG.HHZ. 2019-08-20T09:02:13.16 3.0 undecidable manual Sn -0.01 0
OT.OT14.EHZ. 2019-08-20T09:02:11.59 3.0 undecidable manual Sn 0.01 0
IV.ZONE.HHZ. 2019-08-20T09:02:04.39 3.0 negative manual Pn 8.27 0
IV.PTRJ.HHZ. 2019-08-20T09:02:01.24 3.0 undecidable manual Sn 3.49 0
IV.VAGA.HHZ. 2019-08-20T09:01:49.77 3.0 undecidable manual Sn -3.85 0
IT.VNF1.HGZ. 2019-08-20T09:01:49.44 3.0 undecidable manual Sn -1.21 0
IT.ORP.HGZ. 2019-08-20T09:01:43.75 3.0 negative manual Pn 4.68 0
IV.RAVA.EHZ. 2019-08-20T09:01:38.40 3.0 positive manual Pn -1.49 0
IV.RIBO.EHZ.01 2019-08-20T09:01:34.64 3.0 positive manual P 8.5 0
IV.RM33.EHZ. 2019-08-20T09:01:21.44 0.6 undecidable manual S 159 0.1961 108 -0.09 49
IV.GAVE.EHZ. 2019-08-20T09:01:20.69 0.3 undecidable manual S 270 0.1655 114 0.01 75
IV.LNSS.HHZ. 2019-08-20T09:01:19.26 0.3 undecidable manual S 213 0.107 131 0.05 75
IV.NRCA.HHZ. 2019-08-20T09:01:19.94 0.3 undecidable manual S 358 0.1412 120 -0.08 74
IV.NRCA.HHZ. 2019-08-20T09:01:17.12 0.1 negative manual P 358 0.1412 120 0.02 100
IV.GAVE.EHZ. 2019-08-20T09:01:17.51 0.3 positive manual P 270 0.1655 114 0.04 74
IV.T1299.EHE. 2019-08-20T09:01:17.10 0.6 undecidable manual P 116 0.1331 122 0.12 49
IV.RM33.EHZ. 2019-08-20T09:01:17.88 0.3 undecidable manual P 159 0.1961 108 -0.08 73
IV.SMA1.EHE. 2019-08-20T09:01:17.68 0.6 undecidable manual P 111 0.17 113 0.14 49
IV.LNSS.HHZ. 2019-08-20T09:01:16.53 0.3 undecidable manual P 213 0.107 131 -0.09 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.1 0.00010261399 0.1408 AML other m 2019-08-20T09:01:19.37
IV.LNSS.HHN. ML:1 9.108483E-5 0.16 AML other m 2019-08-20T09:01:19.42
IV.LNSS.HNE. ML:1.1 0.00011202735 0.4352 AML other m 2019-08-20T09:01:19.23
IV.LNSS.HNN. ML:1.3 0.000192231455 1.0432 AML other m 2019-08-20T09:01:25.51
IV.NRCA.HHE. ML:1.2 0.00014091655 0.0768 AML other m 2019-08-20T09:01:20.10
IV.NRCA.HHN. ML:1.2 0.0001088218 0.0768 AML other m 2019-08-20T09:01:20.05
IV.NRCA.HNE. ML:1.2 0.000136262665 0.0768 AML other m 2019-08-20T09:01:20.10
IV.NRCA.HNN. ML:1.3 0.00014517933 0.6592 AML other m 2019-08-20T09:01:26.51
IV.GAVE.EHE. ML:0.9 5.7116445E-5 0.2944 AML other m 2019-08-20T09:01:20.72
IV.GAVE.EHN. ML:1 6.2863175E-5 0.16 AML other m 2019-08-20T09:01:21.66
IV.GAVE.HNE. ML:1.2 0.000107597365 0.768 AML other m 2019-08-20T09:01:38.89
IV.GAVE.HNN. ML:1.2 0.00012547135 0.7424 AML other m 2019-08-20T09:01:32.64
IV.RM33.EHE. ML:0.8 4.116391E-5 0.1984 AML other m 2019-08-20T09:01:22.27
IV.RM33.EHN. ML:0.8 4.201988E-5 0.1024 AML other m 2019-08-20T09:01:21.62
IV.RM33.HNE. ML:1.2 9.276973E-5 0.6016 AML other m 2019-08-20T09:01:40.20
IV.RM33.HNN. ML:1.4 0.0001406956 0.7104 AML other m 2019-08-20T09:01:28.42
IV.OFFI.HHE. ML:1.4 6.1345905E-5 0.32 AML other m 2019-08-20T09:01:33.18
IV.OFFI.HHN. ML:1.5 7.453291E-5 0.3968 AML other m 2019-08-20T09:01:27.11
IV.RNI2.HHE. ML:1.5 2.0606165E-5 0.0832 AML other m 2019-08-20T09:01:30.37
IV.RNI2.HHN. ML:1.6 2.338759E-5 0.0576 AML other m 2019-08-20T09:01:37.68
IV.RNI2.HNE. ML:1.8 4.1932615E-5 0.96 AML other m 2019-08-20T09:01:52.49
IV.RNI2.HNN. ML:1.6 2.60943385E-5 0.32 AML other m 2019-08-20T09:01:36.27
IV.LAV9.HNE. ML:2.7 0.00035173474 0.288 AML other m 2019-08-20T09:01:35.91
IV.LAV9.HNN. ML:2.8 0.0005219508 0.0896 AML other m 2019-08-20T09:01:30.61
IV.LAV9.HHE. ML:2.7 0.00036179685 0.0768 AML other m 2019-08-20T09:01:26.23
IV.LAV9.HHN. ML:2.9 0.00056140425 0.0832 AML other m 2019-08-20T09:01:30.61
IV.RAVA.EHE. ML:4.4 0.00391483695 0.2176 AML other m 2019-08-20T09:02:13.45
IV.RAVA.EHN. ML:4.2 0.00208726 0.0832 AML other m 2019-08-20T09:02:16.51
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download