Earthquake with magnitude of ML 1.1 on date 09-02-2020 and time 13:45:47 (Italy) in region 6 km W Cittareale (RI)

A magnitude ML 1.1 earthquake occured in region: 6 km W Cittareale (RI), on

  • 09-02-2020 12:45:47 (UTC)
  • 09-02-2020 13:45:47 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.64, 13.09 at 9 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 6 482 482
Cascia PG 11 3217 3699
Monteleone di Spoleto PG 11 599 4298
Posta RI 13 694 4992
Leonessa RI 13 2435 7427
Borbona RI 14 617 8044
Accumoli RI 15 667 8711
Poggiodomo PG 15 117 8828
Amatrice RI 16 2657 11485
Norcia PG 17 4957 16442
Montereale AQ 18 2581 19023

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Terni (111501 inhabitants)
41 Km NW of L'Aquila (69753 inhabitants)
48 Km SE of Foligno (57155 inhabitants)
50 Km W of Teramo (54892 inhabitants)
77 Km NE of Guidonia Montecelio (88673 inhabitants)
78 Km SE of Perugia (166134 inhabitants)
79 Km NE of Tivoli (56533 inhabitants)
84 Km E of Viterbo (67173 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
94 Km W of Chieti (51815 inhabitants)
94 Km W of Pescara (121014 inhabitants)
96 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 1.1 2020-02-09
12:45:47
42.64 13.09 9 2020-07-18
21:08:38
Bollettino Sismico Italiano INGV 79837981
Reviewed
Rev100
ML 0.8 2020-02-09
12:45:47
42.67 13.09 4 2020-02-09
13:31:46
Sala Sismica INGV-Roma 76374411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-09 12:45:47 ± 0.16
Latitude 42.64 ± 0.00
Longitude 13.09 ± 0.00
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79837981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 344
Semi-minor axis of confidence ellipse (meter) 325
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 7
Circular confidence region, given by single value of horizontal uncertainty (meter) 340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.04946
Epicentral distance of station farthest from the epicenter (degree) 0.28419
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 79837981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-02 22:49:47

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 76374411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-09 13:31:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MC2.EHZ. 2020-02-09T12:45:58.77 0.6 undecidable manual S 15 0.2842 105 0.31 45
IV.NRCA.HHZ. 2020-02-09T12:45:55.29 0.6 undecidable manual S 5 0.1979 112 -0.01 49
IV.SMA1.EHZ. 2020-02-09T12:45:54.70 0.3 undecidable manual S 92 0.1808 113 0 73
IV.GAVE.HNZ. 2020-02-09T12:45:53.75 0.6 undecidable manual S 291 0.1538 117 -0.01 49
IV.MC2.EHZ. 2020-02-09T12:45:53.31 0.3 undecidable manual P 15 0.2842 105 -0.36 67
IV.T1299.EHZ. 2020-02-09T12:45:53.30 0.3 undecidable manual S 91 0.1421 119 -0.04 73
IV.GAVE.HNZ. 2020-02-09T12:45:51.08 0.3 undecidable manual P 291 0.1538 117 0.13 72
IV.SMA1.EHZ. 2020-02-09T12:45:51.59 0.1 undecidable manual P 92 0.1808 113 0.1 96
IV.NRCA.HHZ. 2020-02-09T12:45:51.79 0.1 undecidable manual P 5 0.1979 112 -0.05 97
IV.T1299.EHZ. 2020-02-09T12:45:50.73 0.1 undecidable manual P 91 0.1421 119 0.02 98
IV.LNSS.HHZ. 2020-02-09T12:45:50.60 0.6 undecidable manual S 227 0.0495 148 -0.07 49
IV.LNSS.HHZ. 2020-02-09T12:45:49.18 0.1 undecidable manual P 227 0.0495 148 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.8 0.0010734695 0.1408 AML other m 2020-02-09T12:45:50.89
IV.LNSS.HHN. ML:1.5 0.0005665503 0.16 AML other m 2020-02-09T12:45:50.92
IV.SMA1.EHN. ML:0.8 4.635E-5 1.68 AML other m 2020-02-09T12:45:55.03
IV.SMA1.EHE. ML:1.2 0.0001214 0.32 AML other m 2020-02-09T12:45:55.05
IV.NRCA.HHE. ML:1.1 9.135E-5 0.94 AML other m 2020-02-09T12:45:55.95
IV.RM33.EHN. ML:0.6 3.3206735E-5 0.1216 AML other m 2020-02-09T12:45:56.35
IV.NRCA.HHN. ML:1.1 8.4E-5 0.1 AML other m 2020-02-09T12:45:56.51
IV.RM33.EHE. ML:0.5 2.8533225E-5 0.1792 AML other m 2020-02-09T12:45:57.43
IV.TERO.HHE. ML:0 1.125E-5 1.1 AML other m 2020-02-09T12:46:00.00
IV.TERO.HHN. ML:0 1.6085E-5 0.46 AML other m 2020-02-09T12:46:02.73
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