Earthquake with magnitude of ML 0.5 on date 02-02-2023 and time 06:46:59 (Italy) in region 5 km SW Cittareale (RI)

A magnitude ML 0.5 earthquake occured in region: 5 km SW Cittareale (RI), on

  • 02-02-2023 05:46:59 (UTC)
  • 02-02-2023 06:46:59 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5880, 13.1180 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 5 482 482
Posta RI 7 694 1176
Borbona RI 8 617 1793
Montereale AQ 13 2581 4374
Leonessa RI 13 2435 6809
Amatrice RI 15 2657 9466
Monteleone di Spoleto PG 15 599 10065
Micigliano RI 16 127 10192
Accumoli RI 16 667 10859
Capitignano AQ 17 665 11524
Cagnano Amiterno AQ 17 1369 12893
Cascia PG 17 3217 16110
Antrodoco RI 19 2588 18698

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of L'Aquila (69753 inhabitants)
39 Km E of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
53 Km SE of Foligno (57155 inhabitants)
73 Km NE of Guidonia Montecelio (88673 inhabitants)
74 Km NE of Tivoli (56533 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
85 Km E of Viterbo (67173 inhabitants)
90 Km W of Chieti (51815 inhabitants)
91 Km W of Pescara (121014 inhabitants)
93 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
Reviewed
Rev100
ML 0.5 2023-02-02
05:46:59
42.5875 13.1182 11 2023-02-02
05:55:10
Sala Sismica INGV-Roma 113975871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-02 05:46:59 ± 0.11
Latitude 42.5875 ± 0.0072
Longitude 13.1182 ± 0.0061
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 113975871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 849
Semi-minor axis of confidence ellipse (meter) 178
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 190
Circular confidence region, given by single value of horizontal uncertainty (meter) 850.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25900
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 113975871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-02 05:55:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.POFI.HHZ. 2023-02-02T05:47:26.99 3.0 undecidable manual S -0.06 0
IV.MMUR.HNZ. 2023-02-02T05:47:14.54 3.0 undecidable manual P 0.03 0
IV.SMA1.EHZ. 2023-02-02T05:47:07.42 0.3 undecidable manual S 75 18.3705 120 0.15 73
IV.RM33.EHZ. 2023-02-02T05:47:05.51 0.1 undecidable manual S 138 11.7771 132 0.09 99
IV.ARRO.EHZ. 2023-02-02T05:47:05.90 0.1 undecidable manual P 268 28.749 50 0.11 96
IV.SMA1.EHZ. 2023-02-02T05:47:04.05 0.1 positive manual P 75 18.3705 120 -0.1 98
IV.LNSS.HHZ. 2023-02-02T05:47:04.37 0.1 undecidable manual S 285 6.5934 149 0.11 100
IV.RM33.EHZ. 2023-02-02T05:47:02.95 0.1 undecidable manual P 138 11.7771 132 -0.13 99
IV.LNSS.HHZ. 2023-02-02T05:47:02.23 0.1 undecidable manual P 285 6.5934 149 -0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:0.5 0.0000518 0.12 AML other m 2023-02-02T05:47:04.67
IV.LNSS.HHN. ML:0.4 0.0000335 1.1 AML other m 2023-02-02T05:47:04.97
IV.RM33.EHN. ML:0.6 0.0000387 0.26 AML other m 2023-02-02T05:47:05.55
IV.RM33.EHE. ML:0.6 0.000040999999999999994 0.24 AML other m 2023-02-02T05:47:05.74
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