Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 17-10-2022 and time 22:37:00 (Italy) in region 4 km E Greccio (RI)

A magnitude ML 1.0 earthquake occured in region: 4 km E Greccio (RI), on

  • 17-10-2022 20:37:00 (UTC)
  • 17-10-2022 22:37:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4490, 12.8180 at 10 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.

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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
Greccio RI 4 1558 1558
Contigliano RI 6 3783 5341
Rieti RI 6 47698 53039
Colli sul Velino RI 6 533 53572
Cantalice RI 7 2755 56327
Poggio Bustone RI 8 2055 58382
Rivodutri RI 8 1253 59635
Labro RI 9 374 60009
Morro Reatino RI 9 373 60382
Cottanello RI 12 563 60945
Cittaducale RI 13 6828 67773
Montasola RI 13 395 68168
Monte San Giovanni in Sabina RI 14 714 68882
Stroncone TR 14 4917 73799
Configni RI 15 633 74432
Polino TR 15 233 74665
Arrone TR 16 2763 77428
Belmonte in Sabina RI 16 636 78064
Vacone RI 16 256 78320
Montefranco TR 17 1276 79596
Casperia RI 17 1246 80842
Leonessa RI 17 2435 83277
Roccantica RI 18 563 83840
Torri in Sabina RI 18 1256 85096
Castel Sant'Angelo RI 19 1308 86404
Montenero Sabino RI 19 299 86703
Terni TR 19 111501 198204
Ferentillo TR 19 1913 200117
Micigliano RI 20 127 200244
Concerviano RI 20 291 200535
Poggio Catino RI 20 1341 201876

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km SE of Terni (111501 inhabitants)
49 Km W of L'Aquila (69753 inhabitants)
50 Km N of Guidonia Montecelio (88673 inhabitants)
54 Km N of Tivoli (56533 inhabitants)
57 Km S of Foligno (57155 inhabitants)
59 Km E of Viterbo (67173 inhabitants)
68 Km NE of Roma (2864731 inhabitants)
76 Km W of Teramo (54892 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
85 Km N of Velletri (53303 inhabitants)
89 Km NE of Fiumicino (78395 inhabitants)
90 Km N of Pomezia (62966 inhabitants)
93 Km E of Civitavecchia (52991 inhabitants)
96 Km N of Aprilia (73446 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 1.0 2022-10-17
20:37:00		 42.4493 12.818 10 2024-03-01
15:28:17		 Bollettino Sismico Italiano INGV 113912831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-10-17 20:37:00 ± 0.1
Latitude 42.4493 ± 0.0054
Longitude 12.8180 ± 0.0073
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 113912831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 617
Semi-minor axis of confidence ellipse (meter) 520
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 313
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.61963
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 113912831
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-01-30 15:08:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IX.SCL3.EHZ.02 2022-10-17T20:37:48.13 3.0 undecidable manual Pg 0.66 0
IV.IMOL.HNZ. 2022-10-17T20:37:36.82 3.0 negative manual Pg 0.15 0
IV.FDMO.HHZ. 2022-10-17T20:37:22.20 0.3 undecidable manual S 19 68.7756 50 0.16 69
IV.SMA1.EHN. 2022-10-17T20:37:16.37 0.3 undecidable manual S 64 46.8198 50 0.17 71
IV.NRCA.HHZ. 2022-10-17T20:37:16.41 0.6 undecidable manual S 29 49.0176 50 -0.37 45
IV.FDMO.HHZ. 2022-10-17T20:37:13.19 0.6 undecidable manual P 19 68.7756 50 0.07 47
IV.FIAM.HHZ. 2022-10-17T20:37:12.38 0.3 undecidable manual S 129 31.746 50 0.22 73
IV.RM33.EHZ. 2022-10-17T20:37:12.49 0.3 undecidable manual S 78 33.1446 50 -0.04 75
IV.GAVE.EHZ. 2022-10-17T20:37:10.50 0.3 undecidable manual S 13 27.6501 109 -0.57 67
IV.NRCA.HHZ. 2022-10-17T20:37:09.92 0.3 undecidable manual P 29 49.0176 50 -0.15 71
IV.MTCE.HHZ. 2022-10-17T20:37:09.43 0.6 undecidable manual P 188 47.7189 50 -0.44 45
IV.LNSS.HHZ. 2022-10-17T20:37:09.99 0.3 undecidable manual S 47 24.9528 111 -0.19 74
IV.SMA1.EHN. 2022-10-17T20:37:09.97 0.1 undecidable manual P 64 46.8198 50 0.23 94
IV.SRES.HHN. 2022-10-17T20:37:07.59 0.1 undecidable manual P 227 34.5432 50 -0.25 96
IV.FIAM.HHZ. 2022-10-17T20:37:07.19 0.3 undecidable manual P 129 31.746 50 -0.22 73
IV.ARRO.EHZ. 2022-10-17T20:37:07.19 0.6 undecidable manual S 343 15.0738 123 0.08 51
IV.RM33.EHZ. 2022-10-17T20:37:07.77 0.3 undecidable manual P 78 33.1446 50 0.15 73
IV.LNSS.HHZ. 2022-10-17T20:37:06.38 0.1 positive manual P 47 24.9528 111 0.12 100
IV.GAVE.EHZ. 2022-10-17T20:37:06.73 0.3 undecidable manual P 13 27.6501 109 -0.05 76
IV.CESX.HHE. 2022-10-17T20:37:06.77 0.3 undecidable manual P 313 25.8519 110 0.33 72
IV.ARRO.EHZ. 2022-10-17T20:37:04.88 0.3 undecidable manual P 343 15.0738 123 0.4 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHN. ML:0.8 0.0000653 0.94 AML other m 2022-10-17T20:37:07.48
IV.ARRO.EHE. ML:0.8 0.00006245 0.88 AML other m 2022-10-17T20:37:07.25
IV.LNSS.HHN. ML:1.0 0.000057400000000000006 0.3 AML other m 2022-10-17T20:37:10.67
IV.GAVE.EHN. ML:1.2 0.00007280000000000001 1.04 AML other m 2022-10-17T20:37:10.60
IV.GAVE.EHE. ML:1.3 0.0001125 0.3 AML other m 2022-10-17T20:37:10.82
IV.LNSS.HHE. ML:0.8 0.0000419 0.52 AML other m 2022-10-17T20:37:11.97
IV.NRCA.HHE. ML:1.0 0.000030600000000000005 1.86 AML other m 2022-10-17T20:37:17.00
IV.NRCA.HHN. ML:0.8 0.00001565 0.6 AML other m 2022-10-17T20:37:18.80
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