Earthquake with magnitude of ML 1.1 on date 21-09-2019 and time 02:50:40 (Italy) in region 3 km NW Cittareale (RI)

A magnitude ML 1.1 earthquake occured in region: 3 km NW Cittareale (RI), on

  • 21-09-2019 00:50:40 (UTC)
  • 21-09-2019 02:50:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.64, 13.13 at 11 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 3 482 482
Accumoli RI 12 667 1149
Amatrice RI 13 2657 3806
Posta RI 13 694 4500
Cascia PG 13 3217 7717
Borbona RI 14 617 8334
Monteleone di Spoleto PG 15 599 8933
Montereale AQ 16 2581 11514
Leonessa RI 16 2435 13949
Norcia PG 18 4957 18906
Poggiodomo PG 18 117 19023
Capitignano AQ 19 665 19688

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NW of L'Aquila (69753 inhabitants)
41 Km E of Terni (111501 inhabitants)
47 Km W of Teramo (54892 inhabitants)
50 Km SE of Foligno (57155 inhabitants)
78 Km NE of Guidonia Montecelio (88673 inhabitants)
80 Km NE of Tivoli (56533 inhabitants)
80 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
88 Km E of Viterbo (67173 inhabitants)
91 Km W of Chieti (51815 inhabitants)
91 Km W of Pescara (121014 inhabitants)
98 Km NE of Roma (2864731 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 1.1 2019-09-21
00:50:40
42.64 13.13 11 2019-09-21
00:56:05
Sala Sismica INGV-Roma 72599651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-21 00:50:40 ± 0.05
Latitude 42.64 ± 0.00
Longitude 13.13 ± 0.00
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72599651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 284
Semi-minor axis of confidence ellipse (meter) 206
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 5
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) 88
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.07554
Epicentral distance of station farthest from the epicenter (degree) 0.4002
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 72599651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-21 00:56:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2019-09-21T00:50:55.02 0.1 undecidable manual S 355 0.4002 90 0.35 89
IV.TERO.HHZ. 2019-09-21T00:50:52.90 0.1 undecidable manual S 92 0.3471 90 -0.21 90
IV.ARRO.EHZ. 2019-09-21T00:50:51.08 0.1 undecidable manual S 258 0.2761 90 0.09 95
IV.MMO1.EHZ. 2019-09-21T00:50:51.77 0.1 undecidable manual S 29 0.2977 90 0.12 95
IV.MTRA.EHE. 2019-09-21T00:50:49.21 0.1 undecidable manual S 58 0.2275 90 -0.36 89
IV.GAVE.EHZ. 2019-09-21T00:50:48.02 0.1 undecidable manual S 287 0.1835 91 -0.23 93
IV.NRCA.HHZ. 2019-09-21T00:50:48.39 0.1 undecidable manual S 356 0.1961 90 -0.25 92
IV.FDMO.HHZ. 2019-09-21T00:50:48.52 1.0 positive manual P 355 0.4002 90 -0.1 23
IV.TERO.HHZ. 2019-09-21T00:50:47.72 0.1 undecidable manual P 92 0.3471 90 0 94
IV.SMA1.EHZ. 2019-09-21T00:50:47.40 0.1 undecidable manual S 93 0.1493 91 0.15 97
IV.ARRO.EHZ. 2019-09-21T00:50:46.65 1.0 negative manual P 258 0.2761 90 0.15 24
IV.MMO1.EHZ. 2019-09-21T00:50:46.90 0.6 positive manual P 29 0.2977 90 0.02 48
IV.T1299.EHE. 2019-09-21T00:50:46.23 0.1 undecidable manual S 92 0.1106 107 0.13 99
IV.RM33.EHZ. 2019-09-21T00:50:46.81 0.1 undecidable manual S 155 0.1421 92 -0.22 94
IV.CAMP.HHE. 2019-09-21T00:50:45.81 0.3 undecidable manual P 116 0.2275 90 0.13 72
IV.LNSS.HHZ. 2019-09-21T00:50:45.29 0.1 undecidable manual S 243 0.0755 129 0.08 100
IV.MTRA.EHE. 2019-09-21T00:50:45.58 0.1 undecidable manual P 58 0.2275 90 -0.1 94
IV.NRCA.HHZ. 2019-09-21T00:50:45.03 0.1 positive manual P 356 0.1961 90 -0.11 95
IV.RM33.EHZ. 2019-09-21T00:50:44.22 0.6 negative manual P 155 0.1421 92 0.01 49
IV.SMA1.EHZ. 2019-09-21T00:50:44.53 0.1 positive manual P 93 0.1493 91 0.19 96
IV.GAVE.EHZ. 2019-09-21T00:50:44.96 0.6 undecidable manual P 287 0.1835 91 0.04 49
IV.LNSS.HHZ. 2019-09-21T00:50:43.33 0.1 negative manual P 243 0.0755 129 0.17 98
IV.T1299.EHE. 2019-09-21T00:50:43.82 0.1 undecidable manual P 92 0.1106 107 0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.4 0.0003120301 0.14 AML other m 2019-09-21T00:50:45.45
IV.LNSS.HHN. ML:1.2 0.00022437265 0.16 AML other m 2019-09-21T00:50:45.38
IV.LNSS.HNE. ML:1.4 0.0002974743 0.14 AML other m 2019-09-21T00:50:45.38
IV.LNSS.HNN. ML:1.2 0.0002131511 0.12 AML other m 2019-09-21T00:50:46.06
IV.RM33.EHE. ML:0.8 6.183353E-5 0.1 AML other m 2019-09-21T00:50:47.73
IV.RM33.EHN. ML:1 9.4184005E-5 0.22 AML other m 2019-09-21T00:50:47.01
IV.RM33.HNE. ML:1.2 0.00015369102 0.63 AML other m 2019-09-21T00:50:46.53
IV.RM33.HNN. ML:1.1 9.960667E-5 0.19 AML other m 2019-09-21T00:50:46.99
IV.SMA1.EHE. ML:1.2 0.000125626675 0.16 AML other m 2019-09-21T00:50:47.65
IV.SMA1.EHN. ML:1.3 0.00015647985 0.26 AML other m 2019-09-21T00:50:47.62
IV.GAVE.HNE. ML:1.2 0.000115950015 0.25 AML other m 2019-09-21T00:50:48.53
IV.GAVE.EHE. ML:1 7.8768935E-5 0.22 AML other m 2019-09-21T00:50:48.54
IV.GAVE.EHN. ML:0.9 5.846011E-5 0.16 AML other m 2019-09-21T00:50:48.60
IV.NRCA.HNE. ML:1.5 0.00021551328 0.15 AML other m 2019-09-21T00:50:48.63
IV.NRCA.HHE. ML:1.5 0.0002258876 0.14 AML other m 2019-09-21T00:50:48.63
IV.NRCA.HHN. ML:1.3 0.000134155365 0.08 AML other m 2019-09-21T00:50:48.53
IV.ARRO.EHN. ML:0.5 1.3909793E-5 0.22 AML other m 2019-09-21T00:50:52.71
IV.TERO.HHE. ML:0.6 1.5585E-5 0.12 AML other m 2019-09-21T00:50:53.13
IV.TERO.HHN. ML:0.6 1.3184942E-5 0.08 AML other m 2019-09-21T00:50:53.45
IV.FDMO.HHE. ML:0.5 1.00914215E-5 0.24 AML other m 2019-09-21T00:50:55.61
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