Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 06-10-2023 and time 09:45:03 (Italy) in region 3 km SW Riano (RM)

A magnitude ML 1.9 earthquake occured in region: 3 km SW Riano (RM), on

  • 06-10-2023 07:45:03 (UTC)
  • 06-10-2023 09:45:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.0700, 12.5100 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
Riano RM 3 10466 10466
Castelnuovo di Porto RM 6 8630 19096
Sacrofano RM 7 7740 26836
Morlupo RM 8 8696 35532
Capena RM 8 10592 46124
Formello RM 9 12918 59042
Monterotondo RM 9 40830 99872
Mentana RM 11 22921 122793
Magliano Romano RM 12 1448 124241
Fonte Nuova RM 12 32562 156803
Campagnano di Roma RM 13 11571 168374
Fiano Romano RM 13 15360 183734
Civitella San Paolo RM 15 2066 185800
Rignano Flaminio RM 16 10277 196077
Sant'Angelo Romano RM 17 5018 201095
Mazzano Romano RM 18 3165 204260
Calcata VT 18 918 205178
Faleria VT 18 2179 207357
Sant'Oreste RM 18 3687 211044
Nazzano RM 19 1436 212480
Guidonia Montecelio RM 20 88673 301153
Roma RM 20 2864731 3165884
Anguillara Sabazia RM 20 19357 3185241

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km W of Guidonia Montecelio (88673 inhabitants)
20 Km N of Roma (2864731 inhabitants)
27 Km W of Tivoli (56533 inhabitants)
40 Km NE of Fiumicino (78395 inhabitants)
44 Km N of Pomezia (62966 inhabitants)
48 Km NW of Velletri (53303 inhabitants)
51 Km SE of Viterbo (67173 inhabitants)
54 Km N of Aprilia (73446 inhabitants)
56 Km S of Terni (111501 inhabitants)
59 Km E of Civitavecchia (52991 inhabitants)
70 Km N of Anzio (54211 inhabitants)
75 Km NW of Latina (125985 inhabitants)
80 Km W of L'Aquila (69753 inhabitants)
100 Km S of Foligno (57155 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 1.9 2023-10-06
07:45:03		 42.0702 12.5095 10 2023-10-06
07:57:01		 Sala Sismica INGV-Roma 121814571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-06 07:45:03 ± 0.09
Latitude 42.0702 ± 0.0036
Longitude 12.5095 ± 0.0073
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121814571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 580
Semi-minor axis of confidence ellipse (meter) 369
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 268
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 102
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.89123
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 121814571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-06 07:57:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SPS2.HHZ. 2023-10-06T07:46:56.02 3.0 undecidable manual Sn 2.33 0
IV.TDS.HHZ. 2023-10-06T07:46:49.62 3.0 undecidable manual Sn 2.14 0
IV.SCHR.EHZ. 2023-10-06T07:46:37.71 3.0 undecidable manual Sn 2.33 0
IV.MCRV.HHZ. 2023-10-06T07:46:13.41 3.0 undecidable manual Sn 0.09 0
IV.SELL.HHZ. 2023-10-06T07:46:11.96 3.0 undecidable manual Pn 1.29 0
IV.CRAC.EHZ. 2023-10-06T07:46:04.14 3.0 negative manual Pg 7.2 0
IV.TDS.HHZ. 2023-10-06T07:46:04.52 3.0 undecidable manual Pn 2.52 0
IV.NOCI.HHZ. 2023-10-06T07:46:03.21 3.0 negative manual Pn 2.92 0
IV.MIGL.HHZ. 2023-10-06T07:46:01.04 3.0 negative manual Pg 5.57 0
IV.AMUR.HHZ. 2023-10-06T07:46:01.58 3.0 positive manual Pg 6.35 0
GU.GRAM.HHZ. 2023-10-06T07:45:59.19 3.0 undecidable manual Pg 7.73 0
GE.MATE.HHZ. 2023-10-06T07:45:57.71 3.0 positive manual Pn 0.07 0
IV.SFI.EHZ. 2023-10-06T07:45:38.66 3.0 negative manual Pg 2.58 0
IV.SACS.HHZ. 2023-10-06T07:45:32.74 3.0 undecidable manual S -2.85 0
IV.NRCA.HHZ. 2023-10-06T07:45:32.67 3.0 undecidable manual S -1.78 0
IV.SENI.HNZ. 2023-10-06T07:45:32.89 3.0 undecidable manual Pn -0.57 0
IV.VAGA.HHZ. 2023-10-06T07:45:31.66 3.0 undecidable manual P 1.66 0
IV.RIBO.EHZ.01 2023-10-06T07:45:30.95 3.0 undecidable manual P 1.51 0
IV.MOMA.HHZ. 2023-10-06T07:45:28.96 0.3 undecidable manual S 3 81.5517 50 0.85 52
IV.FIAM.HHZ. 2023-10-06T07:45:21.09 0.3 undecidable manual S 66 54.6009 50 0.17 68
IV.MGAB.HHZ. 2023-10-06T07:45:20.85 0.6 positive manual P 341 98.9232 50 0.44 39
IV.SMA1.EHZ. 2023-10-06T07:45:19.13 0.6 negative manual P 47 91.9413 50 -0.2 42
IV.GIUL.HHZ. 2023-10-06T07:45:18.20 3.0 positive manual P -0.97 0
IV.MOMA.HHZ. 2023-10-06T07:45:17.76 1.0 undecidable manual P 3 81.5517 50 0.03 22
IV.RM33.EHZ. 2023-10-06T07:45:16.43 0.3 positive manual P 50 75.5688 50 -0.39 62
IV.LNSS.HHZ. 2023-10-06T07:45:16.12 0.3 negative manual P 36 73.371 50 -0.36 63
IV.CESX.HHZ. 2023-10-06T07:45:14.24 0.6 undecidable manual P 6 60.0954 50 -0.18 45
IT.MMP1.HGE. 2023-10-06T07:45:14.18 0.3 undecidable manual S 45 27.9498 109 0.39 68
IT.CSO1.HGZ. 2023-10-06T07:45:13.32 3.0 undecidable manual P 0.59 0
IV.FIAM.HHZ. 2023-10-06T07:45:13.48 0.6 negative manual P 66 54.6009 50 -0.09 46
IV.BARO.EHZ. 2023-10-06T07:45:11.35 1.0 undecidable manual P 298 42.5241 50 -0.37 22
IV.MTCE.HHZ. 2023-10-06T07:45:11.26 0.1 undecidable manual S 105 19.869 116 0.06 98
IV.CERT.HHZ. 2023-10-06T07:45:11.37 1.0 positive manual P 109 41.1255 50 -0.14 23
IV.SRES.HHZ. 2023-10-06T07:45:10.68 0.1 undecidable manual S 0 18.4704 117 -0.09 98
IT.MMP1.HGE. 2023-10-06T07:45:09.28 0.1 undecidable manual P 45 27.9498 109 -0.18 95
IT.RMVT.HGZ. 2023-10-06T07:45:09.41 0.1 undecidable manual S 189 12.7761 127 0.32 94
IT.RMMM.HGE. 2023-10-06T07:45:07.37 0.1 undecidable manual P 196 16.9719 119 -0.08 98
IV.SRES.HHZ. 2023-10-06T07:45:07.59 0.1 positive manual P 0 18.4704 117 -0.13 97
IV.MTCE.HHZ. 2023-10-06T07:45:07.86 0.1 positive manual P 105 19.869 116 -0.1 97
IT.RMVT.HGZ. 2023-10-06T07:45:06.71 0.1 negative manual P 189 12.7761 127 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IT.RMVT.HGN. ML:4.0 0.118 0.26 AML other m 2023-10-06T07:45:09.69
IT.RMVT.HGE. ML:3.9 0.09595000000000001 0.14 AML other m 2023-10-06T07:45:09.61
IV.SRES.HHE. ML:1.8 0.0005335000000000001 1.3 AML other m 2023-10-06T07:45:10.99
IV.MTCE.HHN. ML:2.0 0.000753 1.18 AML other m 2023-10-06T07:45:11.68
IV.MTCE.HHE. ML:2.0 0.0007695 0.44 AML other m 2023-10-06T07:45:11.55
IV.SRES.HHN. ML:1.8 0.00046950000000000003 1.72 AML other m 2023-10-06T07:45:11.89
IV.CERT.HHN. ML:1.5 0.00011115 0.42 AML other m 2023-10-06T07:45:18.48
IV.CERT.HHE. ML:1.9 0.000266 0.54 AML other m 2023-10-06T07:45:19.41
IV.RCAV.EHE. ML:1.6 0.00014000000000000001 0.96 AML other m 2023-10-06T07:45:20.22
IV.RCAV.EHN. ML:1.7 0.00014500000000000003 1.4 AML other m 2023-10-06T07:45:21.95
IV.CESX.HHE. ML:2.0 0.00019350000000000001 0.9 AML other m 2023-10-06T07:45:25.49
IV.CESX.HHN. ML:1.9 0.0001635 0.32 AML other m 2023-10-06T07:45:25.79
IV.FIAM.HHE. ML:1.9 0.000178 1.14 AML other m 2023-10-06T07:45:27.96
IV.FIAM.HHN. ML:1.7 0.0001255 1.04 AML other m 2023-10-06T07:45:27.96
IV.RM33.EHE. ML:2.0 0.0001515 0.28 AML other m 2023-10-06T07:45:27.99
IV.LNSS.HHN. ML:2.2 0.000221 1.28 AML other m 2023-10-06T07:45:29.09
IV.LNSS.HHE. ML:2.1 0.0002055 0.62 AML other m 2023-10-06T07:45:29.98
IV.RM33.EHN. ML:1.7 0.0000743 0.42 AML other m 2023-10-06T07:45:30.24
IV.MOMA.HHN. ML:2.0 0.00011949999999999999 1.32 AML other m 2023-10-06T07:45:31.79
IV.MOMA.HHE. ML:2.0 0.0001285 0.18 AML other m 2023-10-06T07:45:31.53
IV.GIUL.HHE. ML:1.4 0.00003685 0.44 AML other m 2023-10-06T07:45:32.67
IV.GIUL.HHN. ML:1.5 0.00004245 1.42 AML other m 2023-10-06T07:45:33.15
IV.NRCA.HHN. ML:2.2 0.0001735 0.9 AML other m 2023-10-06T07:45:34.98
IV.NRCA.HHE. ML:2.4 0.000282 0.44 AML other m 2023-10-06T07:45:35.35
IV.SACS.HHN. ML:1.5 0.000031899999999999996 1.36 AML other m 2023-10-06T07:45:36.91
IV.MGAB.HHN. ML:1.8 0.0000675 0.6 AML other m 2023-10-06T07:45:36.61
IV.MGAB.HHE. ML:1.9 0.00007445000000000001 0.34 AML other m 2023-10-06T07:45:37.58
IV.SACS.HHE. ML:1.5 0.00003625000000000001 0.6 AML other m 2023-10-06T07:45:38.50
IV.SMA1.EHE. ML:2.1 0.00014450000000000002 1.56 AML other m 2023-10-06T07:45:39.97
IV.FDMO.HHE. ML:1.9 0.0000605 0.74 AML other m 2023-10-06T07:45:40.44
IV.SMA1.EHN. ML:2.0 0.00011724999999999999 0.5 AML other m 2023-10-06T07:45:40.32
IV.FDMO.HHN. ML:1.8 0.000052699999999999993 0.26 AML other m 2023-10-06T07:45:43.77
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