Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 11-04-2022 and time 22:29:33 (Italy) in region 1 km SW Ciciliano (RM)

A magnitude ML 1.2 earthquake occured in region: 1 km SW Ciciliano (RM), on

  • 11-04-2022 20:29:33 (UTC)
  • 11-04-2022 22:29:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.9540, 12.9320 at 9 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
Ciciliano RM 1 1336 1336
Sambuci RM 4 925 2261
Cerreto Laziale RM 4 1118 3379
Pisoniano RM 6 770 4149
Gerano RM 6 1263 5412
Castel Madama RM 6 7399 12811
Saracinesco RM 6 185 12996
San Gregorio da Sassola RM 6 1619 14615
Casape RM 6 744 15359
Rocca Canterano RM 8 196 15555
Vicovaro RM 8 4019 19574
Anticoli Corrado RM 8 915 20489
Poli RM 8 2418 22907
Marano Equo RM 8 779 23686
Mandela RM 9 917 24603
Canterano RM 9 351 24954
San Vito Romano RM 9 3273 28227
Agosta RM 9 1765 29992
Rocca Santo Stefano RM 9 975 30967
Roviano RM 10 1351 32318
San Polo dei Cavalieri RM 10 2992 35310
Capranica Prenestina RM 10 351 35661
Tivoli RM 11 56533 92194
Cineto Romano RM 11 601 92795
Roccagiovine RM 11 263 93058
Bellegra RM 11 2887 95945
Cervara di Roma RM 12 455 96400
Rocca di Cave RM 12 377 96777
Arsoli RM 12 1586 98363
Castel San Pietro Romano RM 12 902 99265
Marcellina RM 13 7280 106545
Gallicano nel Lazio RM 13 6334 112879
Palestrina RM 13 21672 134551
Olevano Romano RM 13 6687 141238
Riofreddo RM 13 781 142019
Licenza RM 14 1011 143030
Rocca di Botte AQ 14 856 143886
Genazzano RM 14 6036 149922
Oricola AQ 14 1244 151166
Roiate RM 14 737 151903
Subiaco RM 14 9074 160977
Cave RM 15 11287 172264
Zagarolo RM 15 17843 190107
Vallinfreda RM 16 283 190390
Affile RM 16 1548 191938
Percile RM 16 255 192193
Camerata Nuova RM 16 447 192640
Arcinazzo Romano RM 17 1348 193988
Vivaro Romano RM 18 182 194170
Guidonia Montecelio RM 18 88673 282843
San Cesareo RM 18 15153 297996
Pereto AQ 18 682 298678
Serrone FR 19 3099 301777
Palombara Sabina RM 19 13269 315046
Labico RM 19 6379 321425
Monteflavio RM 19 1348 322773
Paliano FR 20 8281 331054
Valmontone RM 20 15959 347013
Orvinio RI 20 405 347418
Colonna RM 20 4287 351705

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km E of Tivoli (56533 inhabitants)
18 Km E of Guidonia Montecelio (88673 inhabitants)
32 Km NE of Velletri (53303 inhabitants)
38 Km E of Roma (2864731 inhabitants)
46 Km NE of Aprilia (73446 inhabitants)
48 Km NE of Pomezia (62966 inhabitants)
54 Km N of Latina (125985 inhabitants)
59 Km SW of L'Aquila (69753 inhabitants)
61 Km E of Fiumicino (78395 inhabitants)
62 Km NE of Anzio (54211 inhabitants)
72 Km SE of Terni (111501 inhabitants)
85 Km SE of Viterbo (67173 inhabitants)
95 Km E of Civitavecchia (52991 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 1.2 2022-04-11
20:29:33		 41.9543 12.9323 9 2022-07-08
12:34:01		 Bollettino Sismico Italiano INGV 105313251
Reviewed
Rev100 		ML 1.2 2022-04-11
20:29:33		 41.9488 12.9242 9 2022-04-11
20:41:13		 Sala Sismica INGV-Roma 103096801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-04-11 20:29:33 ± 0.07
Latitude 41.9543 ± 0.0045
Longitude 12.9323 ± 0.0060
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 105313251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 466
Semi-minor axis of confidence ellipse (meter) 451
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 338
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.03687
Epicentral distance of station farthest from the epicenter (degree) 0.62683
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 105313251
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-05-29 17:57:01

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 103096801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-04-11 20:41:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.POFI.HNE. 2022-04-11T20:29:55.70 0.6 undecidable manual S 112 69.5748 50 0.31 47
IV.LRP.EHN. 2022-04-11T20:29:54.38 0.6 undecidable manual S 122 63.9915 50 0.49 46
IV.VVLD.HHZ. 2022-04-11T20:29:52.21 0.6 undecidable manual S 99 57.7977 50 -0.04 51
IV.GIUL.HHZ. 2022-04-11T20:29:50.55 0.6 undecidable manual S 149 51.4152 50 0 52
IV.SRES.HHZ. 2022-04-11T20:29:49.40 0.6 undecidable manual S 312 46.8198 50 0.08 52
IV.PTQR.HHZ. 2022-04-11T20:29:47.46 0.6 undecidable manual S 79 39.3273 50 0.14 52
IV.GUAR.HNN. 2022-04-11T20:29:46.68 0.3 undecidable manual S 119 36.0417 50 0.24 77
IV.POFI.HNE. 2022-04-11T20:29:46.09 0.1 undecidable manual P 112 69.5748 50 -0.26 96
IV.RM33.HNE. 2022-04-11T20:29:45.41 0.3 undecidable manual P 21 65.7897 50 -0.35 71
IV.LRP.EHN. 2022-04-11T20:29:45.56 0.6 undecidable manual P 122 63.9915 50 0.08 50
IV.RDP.HHE. 2022-04-11T20:29:45.12 0.6 undecidable manual S 221 28.2495 108 0.78 44
IV.SRES.HHZ. 2022-04-11T20:29:43.36 0.6 undecidable manual P 312 46.8198 50 0.52 47
IV.VVLD.HHZ. 2022-04-11T20:29:43.81 0.3 undecidable manual P 99 57.7977 50 -0.72 64
IV.GIUL.HHZ. 2022-04-11T20:29:43.34 0.1 undecidable manual P 149 51.4152 50 -0.2 100
IV.LATB.EHZ. 2022-04-11T20:29:42.94 0.3 undecidable manual P 177 51.1155 50 -0.57 69
IV.RMP.HHE. 2022-04-11T20:29:42.77 0.3 undecidable manual S 230 24.5532 111 -0.34 76
IV.FIAM.HHZ. 2022-04-11T20:29:41.28 0.3 undecidable manual P 24 37.9287 50 -0.2 77
IV.PTQR.HHZ. 2022-04-11T20:29:41.85 0.3 undecidable manual P 79 39.3273 50 0.17 77
IV.GUAR.HNN. 2022-04-11T20:29:41.33 0.3 undecidable manual P 119 36.0417 50 0.15 78
IV.RDP.HHE. 2022-04-11T20:29:40.44 0.3 undecidable manual P 221 28.2495 108 0.47 74
IV.MTCE.HHZ. 2022-04-11T20:29:40.68 0.3 undecidable manual S 296 17.3715 118 -0.18 80
IV.VIVA.HHN. 2022-04-11T20:29:39.74 0.6 undecidable manual P 211 26.3514 110 0.15 53
IV.RCAV.EHZ. 2022-04-11T20:29:39.07 0.3 undecidable manual S 175 11.9769 128 -0.19 81
IV.RMP.HHE. 2022-04-11T20:29:39.09 0.3 undecidable manual P 230 24.5532 111 -0.17 79
IV.MTCE.HHZ. 2022-04-11T20:29:38.12 0.3 undecidable manual P 296 17.3715 118 0.16 80
IT.CSO1.HGE. 2022-04-11T20:29:38.96 0.3 undecidable manual P 38 20.6682 114 0.41 76
IV.CERT.HHZ. 2022-04-11T20:29:37.45 0.3 undecidable manual S 98 4.0959 156 -0.1 83
IV.RCAV.EHZ. 2022-04-11T20:29:37.16 0.3 undecidable manual P 175 11.9769 128 0.12 82
IV.CERT.HHZ. 2022-04-11T20:29:36.07 0.3 undecidable manual P 98 4.0959 156 0.02 85
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERT.HNE. ML:1.5 0.00062410915 0.2304 AML other m 2022-04-11T20:29:37.66
IV.CERT.HHE. ML:1.2 0.00028368059500000003 0.256 AML other m 2022-04-11T20:29:37.91
IV.CERT.HNN. ML:1.6 0.0007880080000000001 0.192 AML other m 2022-04-11T20:29:37.88
IV.CERT.HHN. ML:1.6 0.0008058023 0.1792 AML other m 2022-04-11T20:29:37.89
IV.RCAV.EHN. ML:1.6 0.00047017585 0.256 AML other m 2022-04-11T20:29:39.46
IV.RCAV.EHE. ML:1.3 0.00025539995 0.2688 AML other m 2022-04-11T20:29:39.33
IV.MTCE.HHE. ML:1.1 0.00010331986 0.2816 AML other m 2022-04-11T20:29:42.25
IV.MTCE.HHN. ML:1.0 0.000096 0.38 AML other m 2022-04-11T20:29:43.01
IV.PTQR.HHN. ML:1.2 0.0000502 1.5 AML other m 2022-04-11T20:29:47.76
IV.PTQR.HHE. ML:0.9 0.0000293 1.78 AML other m 2022-04-11T20:29:47.97
IV.FIAM.HHE. ML:0.7 0.000020900000000000003 0.82 AML other m 2022-04-11T20:29:51.04
IV.GIUL.HHE. ML:0.9 0.00002077385 0.2688 AML other m 2022-04-11T20:29:52.20
IV.GIUL.HHN. ML:1.0 0.000025758295 0.256 AML other m 2022-04-11T20:29:53.64
IV.FIAM.HHN. ML:0.8 0.000025349999999999996 1.3 AML other m 2022-04-11T20:29:53.75
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