Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 05-05-2023 and time 01:09:06 (UTC) in region 4 km W Cittareale (RI)

A magnitude ML 1.2 earthquake occured in region: 4 km W Cittareale (RI), on

  • 05-05-2023 01:09:06 (UTC)
  • 05-05-2023 03:09:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6290, 13.1090 at 12 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.

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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 4 482 482
Posta RI 12 694 1176
Cascia PG 13 3217 4393
Monteleone di Spoleto PG 13 599 4992
Borbona RI 13 617 5609
Accumoli RI 14 667 6276
Leonessa RI 14 2435 8711
Amatrice RI 15 2657 11368
Montereale AQ 16 2581 13949
Poggiodomo PG 17 117 14066
Norcia PG 18 4957 19023
Capitignano AQ 20 665 19688

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Terni (111501 inhabitants)
39 Km NW of L'Aquila (69753 inhabitants)
49 Km W of Teramo (54892 inhabitants)
49 Km SE of Foligno (57155 inhabitants)
77 Km NE of Guidonia Montecelio (88673 inhabitants)
78 Km NE of Tivoli (56533 inhabitants)
79 Km SE of Perugia (166134 inhabitants)
86 Km E of Viterbo (67173 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
92 Km W of Chieti (51815 inhabitants)
92 Km W of Pescara (121014 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
Reviewed
Rev100 		ML 1.2 2023-05-05
01:09:06		 42.6293 13.1092 12 2023-05-05
01:14:05		 Sala Sismica INGV-Roma 117034271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-05 01:09:06 ± 0.05
Latitude 42.6293 ± 0.0027
Longitude 13.1092 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 117034271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 314
Semi-minor axis of confidence ellipse (meter) 202
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 57
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
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) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.05666
Epicentral distance of station farthest from the epicenter (degree) 0.46765
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:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 20
Type of magnitude ML
Reference to an origin 117034271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-05 01:14:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2023-05-05T01:09:23.01 0.6 undecidable manual S 9 51.9036 91 0.21 47
IV.FDMO.HHZ. 2023-05-05T01:09:21.27 0.6 undecidable manual S 358 45.2214 91 0.26 47
IV.CESI.HHZ. 2023-05-05T01:09:21.24 0.6 undecidable manual S 338 44.8218 91 0.32 46
IV.FIAM.HHZ. 2023-05-05T01:09:19.62 0.6 undecidable manual S 179 40.0266 92 -0.02 48
IV.TERO.HHZ. 2023-05-05T01:09:19.51 0.6 undecidable manual S 91 40.4262 92 -0.22 46
IV.ARRO.EHZ. 2023-05-05T01:09:16.62 0.6 undecidable manual S 259 28.5492 93 0.04 49
IV.CSP1.EHZ. 2023-05-05T01:09:15.97 0.6 positive manual P 9 51.9036 91 0.07 48
IV.TERO.HHZ. 2023-05-05T01:09:14.01 0.6 undecidable manual P 91 40.4262 92 -0.12 47
IV.FDMO.HHZ. 2023-05-05T01:09:14.80 1.0 positive manual P 358 45.2214 91 -0.07 24
IV.FIAM.HHZ. 2023-05-05T01:09:14.14 0.6 positive manual P 179 40.0266 92 0.06 49
IV.NRCA.HHZ. 2023-05-05T01:09:14.45 0.6 undecidable manual S 1 22.6551 95 -0.55 43
IV.SMA1.EHZ. 2023-05-05T01:09:14.01 0.3 undecidable manual S 89 18.4704 98 0.12 76
IV.CESI.HHZ. 2023-05-05T01:09:14.95 1.0 undecidable manual P 338 44.8218 91 0.13 24
IV.GIGS.HHZ. 2023-05-05T01:09:14.19 1.0 positive manual P 117 42.624 92 -0.29 23
IV.GAVE.EHZ. 2023-05-05T01:09:13.83 0.6 undecidable manual S 292 18.87 98 -0.16 49
IV.RM33.EHZ. 2023-05-05T01:09:13.28 0.6 undecidable manual S 147 15.873 103 0.07 51
IV.ARRO.EHZ. 2023-05-05T01:09:12.30 0.6 undecidable manual P 259 28.5492 93 -0.01 50
IV.NRCA.HHZ. 2023-05-05T01:09:11.12 0.1 undecidable manual P 1 22.6551 95 -0.28 94
IV.LNSS.HHZ. 2023-05-05T01:09:11.15 0.6 undecidable manual S 242 6.2937 143 0.07 52
IV.SMA1.EHZ. 2023-05-05T01:09:10.92 0.1 undecidable manual P 89 18.4704 98 0.16 100
IV.RM33.EHZ. 2023-05-05T01:09:10.46 1.0 undecidable manual P 147 15.873 103 0.09 25
IV.GAVE.EHZ. 2023-05-05T01:09:10.82 0.3 positive manual P 292 18.87 98 0 76
IV.LNSS.HHZ. 2023-05-05T01:09:09.29 0.6 undecidable manual P 242 6.2937 143 0.15 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.9 0.0010249999999999999 0.14 AML other m 2023-05-05T01:09:11.34
IV.LNSS.HHN. ML:1.7 0.000728 0.14 AML other m 2023-05-05T01:09:11.37
IV.RM33.EHN. ML:1.2 0.000147 0.44 AML other m 2023-05-05T01:09:13.45
IV.RM33.EHE. ML:0.9 0.00007275 0.28 AML other m 2023-05-05T01:09:13.79
IV.GAVE.EHN. ML:1.6 0.000268 1.7 AML other m 2023-05-05T01:09:13.97
IV.GAVE.EHE. ML:1.5 0.00025 0.16 AML other m 2023-05-05T01:09:14.11
IV.SMA1.EHN. ML:1.7 0.000386 0.24 AML other m 2023-05-05T01:09:14.43
IV.SMA1.EHE. ML:1.5 0.000237 0.18 AML other m 2023-05-05T01:09:14.36
IV.NRCA.HHN. ML:1.4 0.000169 0.1 AML other m 2023-05-05T01:09:15.10
IV.NRCA.HHE. ML:1.6 0.00026249999999999993 0.16 AML other m 2023-05-05T01:09:15.17
IV.ARRO.EHN. ML:0.7 0.00002315 0.84 AML other m 2023-05-05T01:09:17.32
IV.ARRO.EHE. ML:0.7 0.00002265 0.42 AML other m 2023-05-05T01:09:17.66
IV.FIAM.HHE. ML:0.9 0.000024449999999999998 1.06 AML other m 2023-05-05T01:09:20.37
IV.TERO.HHE. ML:1.1 0.000042 0.88 AML other m 2023-05-05T01:09:20.90
IV.TERO.HHN. ML:1.1 0.000044200000000000004 0.9 AML other m 2023-05-05T01:09:20.50
IV.FIAM.HHN. ML:0.8 0.00002135 0.16 AML other m 2023-05-05T01:09:21.31
IV.CESI.HHN. ML:1.1 0.00003855 0.28 AML other m 2023-05-05T01:09:22.03
IV.FDMO.HHE. ML:0.9 0.0000227 0.18 AML other m 2023-05-05T01:09:22.86
IV.CESI.HHE. ML:0.8 0.000018250000000000003 0.86 AML other m 2023-05-05T01:09:22.88
IV.FDMO.HHN. ML:0.7 0.00001715 0.22 AML other m 2023-05-05T01:09:23.61
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