Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 07-10-2023 and time 21:37:30 (Italy) in region 2 km SE Casteldelci (RN)

A magnitude ML 1.5 earthquake occured in region: 2 km SE Casteldelci (RN), on

  • 07-10-2023 19:37:30 (UTC)
  • 07-10-2023 21:37:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.7770, 12.1740 at 10 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
Casteldelci RN 2 407 407
Badia Tedalda AR 8 1087 1494
Pennabilli RN 9 2869 4363
Sant'Agata Feltria RN 10 2151 6514
Sestino AR 13 1355 7869
Carpegna PU 13 1674 9543
Verghereto FC 14 1907 11450
Maiolo RN 16 848 12298
Pieve Santo Stefano AR 16 3183 15481
Sarsina FC 16 3446 18927
Novafeltria RN 16 7164 26091
Borgo Pace PU 16 606 26697
Frontino PU 17 293 26990
Montecopiolo PU 17 1128 28118
Pietrarubbia PU 17 660 28778
Talamello RN 17 1104 29882
Belforte all'Isauro PU 18 769 30651
Bagno di Romagna FC 18 6026 36677
San Leo RN 19 2972 39649
Mercatello sul Metauro PU 20 1378 41027

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km S of Cesena (96758 inhabitants)
42 Km NE of Arezzo (99543 inhabitants)
45 Km SW of Rimini (147750 inhabitants)
51 Km S of Forlì (117913 inhabitants)
61 Km SE of Faenza (58541 inhabitants)
61 Km W of Pesaro (94582 inhabitants)
68 Km W of Fano (60888 inhabitants)
71 Km S of Ravenna (159116 inhabitants)
74 Km E of Firenze (382808 inhabitants)
74 Km SE of Imola (69797 inhabitants)
77 Km N of Perugia (166134 inhabitants)
80 Km E of Scandicci (50609 inhabitants)
85 Km NE of Siena (53903 inhabitants)
87 Km E of Prato (191150 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 1.5 2023-10-07
19:37:30		 43.7773 12.1735 11 2023-10-07
19:44:39		 Sala Sismica INGV-Roma 121868051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-07 19:37:30 ± 0.11
Latitude 43.7773 ± 0.0063
Longitude 12.1735 ± 0.0100
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 121868051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 766
Semi-minor axis of confidence ellipse (meter) 729
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 208
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45056
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 121868051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-07 19:44:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SEI.HHZ. 2023-10-07T19:37:54.91 3.0 undecidable manual S 0.19 0
IV.CSP1.EHZ. 2023-10-07T19:37:49.78 3.0 negative manual P -0.07 0
IV.FRON.EHZ. 2023-10-07T19:37:48.07 3.0 undecidable manual S 0.24 0
IV.LMD.HHZ. 2023-10-07T19:37:47.48 0.3 undecidable manual S 312 50.0166 50 0.66 62
IV.SEI.HHZ. 2023-10-07T19:37:43.69 3.0 positive manual P -0.46 0
IV.BADI.EHZ. 2023-10-07T19:37:41.81 0.3 undecidable manual S 169 30.2475 50 0.26 73
IV.SFI.EHZ. 2023-10-07T19:37:41.42 0.3 undecidable manual S 299 29.748 50 0.01 75
IV.FRON.EHZ. 2023-10-07T19:37:40.06 3.0 positive manual P -0.22 0
IV.CRE.HHZ. 2023-10-07T19:37:40.62 0.3 undecidable manual S 225 24.9528 50 0.46 66
IV.LMD.HHZ. 2023-10-07T19:37:39.91 0.1 undecidable manual P 312 50.0166 50 -0.18 92
IV.ATVO.HHZ. 2023-10-07T19:37:39.73 3.0 positive manual P 0.17 0
IV.MPAG.EHZ. 2023-10-07T19:37:39.61 3.0 negative manual P -0.13 0
IV.ATPI.EHZ. 2023-10-07T19:37:38.40 3.0 negative manual P 0.02 0
IV.NARO.HHZ. 2023-10-07T19:37:37.45 3.0 positive manual P -0.29 0
IV.PARC.HHZ. 2023-10-07T19:37:37.32 0.3 undecidable manual S 160 15.1737 125 0.04 75
IV.PIEI.HHZ. 2023-10-07T19:37:37.44 3.0 positive manual P -0.66 0
IV.SFI.EHZ. 2023-10-07T19:37:36.55 0.1 undecidable manual P 299 29.748 50 -0.41 91
IV.CRE.HHZ. 2023-10-07T19:37:36.14 0.3 undecidable manual P 225 24.9528 50 -0.09 75
IV.CPGN.EHZ. 2023-10-07T19:37:36.77 0.3 undecidable manual S 77 12.0768 131 0.35 71
IV.BADI.EHZ. 2023-10-07T19:37:36.79 0.3 undecidable manual P 169 30.2475 50 -0.25 69
IV.PE3.EHZ. 2023-10-07T19:37:36.30 3.0 positive manual P 0.21 0
IV.PARC.HHZ. 2023-10-07T19:37:34.39 0.1 undecidable manual P 160 15.1737 125 -0.19 99
IV.CPGN.EHZ. 2023-10-07T19:37:33.95 0.1 positive manual P 77 12.0768 131 -0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PARC.HHE. ML:1.3 0.0001855 0.5 AML other m 2023-10-07T19:37:37.92
IV.PARC.HHN. ML:1.4 0.0002245 1.72 AML other m 2023-10-07T19:37:39.97
IV.SFI.EHE. ML:1.5 0.000141 0.84 AML other m 2023-10-07T19:37:41.96
IV.PE3.EHN. ML:1.7 0.00026700000000000004 0.74 AML other m 2023-10-07T19:37:42.43
IV.PE3.EHE. ML:1.7 0.0002615 0.18 AML other m 2023-10-07T19:37:42.18
IV.CRE.HHN. ML:1.4 0.0001365 0.26 AML other m 2023-10-07T19:37:42.65
IV.BADI.EHE. ML:1.3 0.0000887 0.48 AML other m 2023-10-07T19:37:42.73
IV.SFI.EHN. ML:1.4 0.00011949999999999999 0.46 AML other m 2023-10-07T19:37:43.33
IV.NARO.HHN. ML:1.6 0.000156 0.5 AML other m 2023-10-07T19:37:43.71
IV.NARO.HHE. ML:1.4 0.000089 1.22 AML other m 2023-10-07T19:37:44.24
IV.PIEI.HHN. ML:1.2 0.0000504 0.54 AML other m 2023-10-07T19:37:44.44
IV.PIEI.HHE. ML:1.5 0.0001081 0.7 AML other m 2023-10-07T19:37:44.38
IV.CRE.HHE. ML:1.2 0.0000913 1.32 AML other m 2023-10-07T19:37:45.99
IV.BADI.EHN. ML:1.2 0.0000764 1.5 AML other m 2023-10-07T19:37:45.79
IV.ATVO.HHN. ML:1.5 0.00007919999999999999 0.52 AML other m 2023-10-07T19:37:47.17
IV.ATVO.HHE. ML:1.7 0.000131 0.48 AML other m 2023-10-07T19:37:47.17
IV.SEI.HHN. ML:1.8 0.00009984999999999999 0.26 AML other m 2023-10-07T19:37:54.84
IV.SEI.HHE. ML:1.7 0.00007865 1.1 AML other m 2023-10-07T19:37:55.39
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