Earthquake with magnitude of ML 2.2 on date 01-04-2022 and time 09:23:11 (Italy) in region 1 km SW Ciciliano (RM)

A magnitude ML 2.2 earthquake occured in region: 1 km SW Ciciliano (RM), on

  • 01-04-2022 07:23:11 (UTC)
  • 01-04-2022 09:23:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.9550, 12.9310 at 9 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.

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
Castel Madama RM 6 7399 10778
Pisoniano RM 6 770 11548
Gerano RM 6 1263 12811
Saracinesco RM 6 185 12996
San Gregorio da Sassola RM 6 1619 14615
Casape RM 6 744 15359
Vicovaro RM 8 4019 19378
Rocca Canterano RM 8 196 19574
Anticoli Corrado RM 8 915 20489
Poli RM 8 2418 22907
Marano Equo RM 9 779 23686
Mandela RM 9 917 24603
San Vito Romano RM 9 3273 27876
Agosta RM 9 1765 29641
Canterano RM 9 351 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
Roccagiovine RM 11 263 92457
Cineto Romano RM 11 601 93058
Bellegra RM 12 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
Riofreddo RM 13 781 135332
Olevano Romano RM 13 6687 142019
Licenza RM 14 1011 143030
Oricola AQ 14 1244 144274
Rocca di Botte AQ 14 856 145130
Genazzano RM 14 6036 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
Percile RM 16 255 190645
Affile RM 16 1548 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
Palombara Sabina RM 19 13269 311947
Serrone FR 19 3099 315046
Labico RM 19 6379 321425
Monteflavio RM 19 1348 322773
Valmontone RM 20 15959 338732
Paliano FR 20 8281 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)
71 Km SE of Terni (111501 inhabitants)
85 Km SE of Viterbo (67173 inhabitants)
95 Km E of Civitavecchia (52991 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 2.2 2022-04-01
07:23:11
41.9548 12.931 9 2022-04-01
07:32:33
Sala Sismica INGV-Roma 102653391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-04-01 07:23:11 ± 0.08
Latitude 41.9548 ± 0.0045
Longitude 12.9310 ± 0.0073
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 102653391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 574
Semi-minor axis of confidence ellipse (meter) 348
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 302
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.57467
Number of stations at which the event was observed 40
Number of stations from which data was used for origin computation 14
Magnitude information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 52
Type of magnitude ML
Reference to an origin 102653391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-04-01 07:32:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
FR.SAOF.HHZ.00 2022-04-01T07:25:11.55 3.0 undecidable manual Sn 1.74 0
IV.CET2.HHZ. 2022-04-01T07:24:55.28 3.0 undecidable manual Sg 13.15 0
IV.ORI.HHZ. 2022-04-01T07:24:39.96 3.0 undecidable manual Sn -0.64 0
IV.MUCR.HHZ. 2022-04-01T07:24:23.80 3.0 undecidable manual Pg 10.17 0
ST.PANI.EHZ. 2022-04-01T07:24:21.37 3.0 undecidable manual Pn 6.12 0
MN.VAE.HHZ. 2022-04-01T07:24:20.60 3.0 undecidable manual Pn 1.07 0
IV.ZEN8.EHZ. 2022-04-01T07:24:16.01 3.0 positive manual Pn 4.09 0
IV.CSNT.HHZ. 2022-04-01T07:24:07.27 3.0 undecidable manual Sn -1.63 0
CR.STON.BHZ. 2022-04-01T07:24:06.32 3.0 undecidable manual Pn -0.39 0
IV.EL6.EHZ. 2022-04-01T07:23:58.18 3.0 undecidable manual S 2.88 0
IV.PII.HHZ. 2022-04-01T07:23:54.56 3.0 negative manual Pn 3.43 0
IV.FDMO.HHZ. 2022-04-01T07:23:48.97 3.0 undecidable manual S 0.81 0
IV.EL6.EHZ. 2022-04-01T07:23:37.77 3.0 undecidable manual P 1.95 0
IV.POFI.HHZ. 2022-04-01T07:23:33.37 3.0 undecidable manual S 0.09 0
IV.FOSV.EHZ. 2022-04-01T07:23:33.96 3.0 undecidable manual P -1.39 0
IV.MMO1.EHZ. 2022-04-01T07:23:30.63 3.0 undecidable manual P 0.2 0
IV.CESI.HHZ. 2022-04-01T07:23:30.02 3.0 positive manual P -1.27 0
IV.MC2.EHZ. 2022-04-01T07:23:29.40 3.0 undecidable manual P -0.86 0
IV.NRCA.HHZ. 2022-04-01T07:23:28.84 3.0 positive manual P -0.04 0
IV.GIUL.HHZ. 2022-04-01T07:23:27.97 0.3 undecidable manual S 149 0.4641 50 0.05 68
IV.SMA1.EHZ. 2022-04-01T07:23:26.27 3.0 positive manual P 0.21 0
IV.INTR.HHZ. 2022-04-01T07:23:25.19 3.0 negative manual P -0.28 0
IV.PTQR.HHZ. 2022-04-01T07:23:25.20 0.3 undecidable manual S 79 0.3552 50 0.5 63
IV.GUAR.HHZ. 2022-04-01T07:23:24.15 0.3 undecidable manual S 119 0.3256 50 0.32 66
IV.FIAM.HHZ. 2022-04-01T07:23:24.16 0.3 undecidable manual S 24 0.3417 50 -0.15 69
IV.ARRO.EHZ. 2022-04-01T07:23:24.17 3.0 negative manual P -0.04 0
IV.SAMA.EHE. 2022-04-01T07:23:23.49 0.1 undecidable manual S 235 0.3067 50 0.24 91
IV.FAGN.HHZ. 2022-04-01T07:23:23.31 0.3 undecidable manual P 57 0.5747 50 0.52 60
IV.POFI.HHZ. 2022-04-01T07:23:23.18 3.0 positive manual P -0.27 0
IV.RM33.EHZ. 2022-04-01T07:23:22.57 3.0 undecidable manual P -0.79 0
IV.LRP.EHZ. 2022-04-01T07:23:22.46 3.0 negative manual P 0.03 0
IV.RDP.HHZ. 2022-04-01T07:23:22.20 0.1 undecidable manual S 220 0.2545 108 0.62 83
IV.VVLD.HHZ. 2022-04-01T07:23:21.19 3.0 undecidable manual P -0.39 0
IV.LNSS.HHZ. 2022-04-01T07:23:21.37 3.0 undecidable manual P -3.14 0
IV.GIUL.HHZ. 2022-04-01T07:23:20.36 0.1 undecidable manual P 149 0.4641 50 -0.53 82
IV.SRES.HHZ. 2022-04-01T07:23:20.39 3.0 positive manual Pg 0.26 0
IT.CSO1.HGN. 2022-04-01T07:23:19.50 0.1 undecidable manual S 39 0.1871 114 0.36 90
IV.LAV9.HHZ. 2022-04-01T07:23:19.32 0.6 undecidable manual P 212 0.3265 50 0.79 38
IV.PTQR.HHZ. 2022-04-01T07:23:18.66 0.6 negative manual P 79 0.3552 50 -0.37 44
IV.MTCE.HHZ. 2022-04-01T07:23:18.35 0.3 undecidable manual S 296 0.1556 118 0.28 69
IV.FIAM.HHZ. 2022-04-01T07:23:18.60 0.3 undecidable manual P 24 0.3417 50 -0.2 68
IV.SAMA.EHE. 2022-04-01T07:23:18.05 0.1 undecidable manual P 235 0.3067 50 -0.14 92
IV.RDP.HHZ. 2022-04-01T07:23:17.04 0.1 undecidable manual P 220 0.2545 108 -0.19 92
IT.MMP1.HGN. 2022-04-01T07:23:17.96 0.1 undecidable manual P 335 0.3238 50 -0.53 84
IV.GUAR.HHZ. 2022-04-01T07:23:17.88 0.6 undecidable manual P 119 0.3256 50 -0.64 40
IV.RCAV.EHZ. 2022-04-01T07:23:16.24 0.1 undecidable manual S 174 0.1079 127 -0.27 93
IV.RMP.HHZ. 2022-04-01T07:23:16.55 0.3 undecidable manual P 230 0.2203 110 0.03 72
IT.CSO1.HGN. 2022-04-01T07:23:15.90 0.1 undecidable manual P 39 0.1871 114 0.08 96
IV.MTCE.HHZ. 2022-04-01T07:23:14.92 0.1 positive manual P 296 0.1556 118 -0.28 92
IV.RCAV.EHZ. 2022-04-01T07:23:14.11 0.1 undecidable manual P 174 0.1079 127 -0.19 95
IV.CERT.HHZ. 2022-04-01T07:23:13.30 0.1 negative manual P 99 0.0378 155 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERT.HNN. ML:2.9 0.015649999999999997 0.5 AML other m 2022-04-01T07:23:14.89
IV.CERT.HHN. ML:2.9 0.016300000000000002 0.36 AML other m 2022-04-01T07:23:15.79
IV.CERT.HNE. ML:3.0 0.01785 0.56 AML other m 2022-04-01T07:23:15.81
IV.CERT.HHE. ML:2.6 0.0074399999999999996 0.24 AML other m 2022-04-01T07:23:15.83
IV.RCAV.EHN. ML:2.6 0.0046 0.34 AML other m 2022-04-01T07:23:16.42
IV.RCAV.EHE. ML:2.6 0.00477 0.34 AML other m 2022-04-01T07:23:17.59
IV.MTCE.HHE. ML:2.1 0.00116 0.8 AML other m 2022-04-01T07:23:18.99
IV.MTCE.HHN. ML:2.1 0.00122 1.24 AML other m 2022-04-01T07:23:20.24
IV.RDP.HHE. ML:2.4 0.0012850000000000001 0.8 AML other m 2022-04-01T07:23:22.52
IV.RDP.HHN. ML:2.7 0.0025250000000000003 0.6 AML other m 2022-04-01T07:23:25.07
IV.GUAR.HNE. ML:2.3 0.000785 1.38 AML other m 2022-04-01T07:23:25.96
IV.GUAR.HHE. ML:2.3 0.000775 0.34 AML other m 2022-04-01T07:23:25.79
IV.GUAR.HHN. ML:2.4 0.0009450000000000001 1.64 AML other m 2022-04-01T07:23:26.95
IV.GUAR.HNN. ML:2.4 0.0009735000000000001 1.62 AML other m 2022-04-01T07:23:26.95
IV.PTQR.HHN. ML:2.3 0.000729 0.82 AML other m 2022-04-01T07:23:26.32
IV.PTQR.HHE. ML:2.0 0.00035850000000000004 0.28 AML other m 2022-04-01T07:23:26.75
IV.SRES.HHN. ML:2.2 0.0004395 0.34 AML other m 2022-04-01T07:23:27.82
IV.GIUL.HHN. ML:2.4 0.000739 1.52 AML other m 2022-04-01T07:23:29.94
IV.SRES.HHE. ML:2.0 0.000296 0.94 AML other m 2022-04-01T07:23:29.40
IV.GIUL.HHE. ML:2.3 0.0005285 1.46 AML other m 2022-04-01T07:23:30.22
IV.FIAM.HHE. ML:1.9 0.00030649999999999997 0.54 AML other m 2022-04-01T07:23:31.04
IV.FIAM.HHN. ML:2.0 0.00037150000000000003 0.5 AML other m 2022-04-01T07:23:32.05
IV.VVLD.HHN. ML:2.0 0.00023299999999999997 0.34 AML other m 2022-04-01T07:23:33.08
IV.VVLD.HNN. ML:2.1 0.0002735 1.42 AML other m 2022-04-01T07:23:33.09
IV.LRP.EHE. ML:2.3 0.00039049999999999995 0.26 AML other m 2022-04-01T07:23:33.72
IV.ARRO.EHN. ML:2.1 0.000225 0.3 AML other m 2022-04-01T07:23:34.56
IV.VVLD.HNE. ML:2.1 0.0003 0.6 AML other m 2022-04-01T07:23:34.60
IV.VVLD.HHE. ML:2.1 0.00029000000000000006 1.48 AML other m 2022-04-01T07:23:35.16
IV.RM33.EHN. ML:2.1 0.000224 0.46 AML other m 2022-04-01T07:23:36.33
IV.POFI.HHN. ML:1.8 0.00009735 0.74 AML other m 2022-04-01T07:23:36.84
IV.LRP.EHN. ML:1.6 0.000087 0.66 AML other m 2022-04-01T07:23:37.06
IV.ARRO.EHE. ML:2.1 0.00020250000000000002 0.2 AML other m 2022-04-01T07:23:37.56
IV.POFI.HHE. ML:1.9 0.000128 1 AML other m 2022-04-01T07:23:38.01
IV.FAGN.HHN. ML:2.3 0.0003615 1.6 AML other m 2022-04-01T07:23:38.92
IV.FAGN.HHE. ML:2.4 0.0004685 0.46 AML other m 2022-04-01T07:23:42.04
IV.RM33.EHE. ML:2.2 0.000279 0.54 AML other m 2022-04-01T07:23:42.10
IV.SMA1.EHN. ML:2.5 0.0003885 0.42 AML other m 2022-04-01T07:23:43.21
IV.INTR.HHN. ML:2.1 0.0001635 1.58 AML other m 2022-04-01T07:23:43.97
IV.NRCA.HHE. ML:2.1 0.00013340000000000002 0.8 AML other m 2022-04-01T07:23:45.50
IV.SMA1.EHE. ML:2.6 0.0005045 0.38 AML other m 2022-04-01T07:23:45.52
IV.NRCA.HHN. ML:2.3 0.00019800000000000002 1.32 AML other m 2022-04-01T07:23:45.95
IV.INTR.HHE. ML:2.0 0.0001465 0.82 AML other m 2022-04-01T07:23:47.33
IV.MMO1.EHN. ML:2.4 0.0001895 1.06 AML other m 2022-04-01T07:23:49.85
IV.MMO1.EHE. ML:2.3 0.0001545 0.72 AML other m 2022-04-01T07:23:51.73
IV.CESI.HHN. ML:2.4 0.00019600000000000002 0.32 AML other m 2022-04-01T07:23:51.92
IV.FDMO.HHN. ML:2.0 0.00006315 0.54 AML other m 2022-04-01T07:23:52.67
IV.CESI.HHE. ML:2.3 0.00015095 0.82 AML other m 2022-04-01T07:23:52.00
IV.FDMO.HHE. ML:2.0 0.00007735 0.44 AML other m 2022-04-01T07:23:53.09
IV.CSNT.HHE. ML:2.3 0.00005205 0.42 AML other m 2022-04-01T07:23:57.74
IV.FOSV.EHE. ML:2.0 0.0000555 0.52 AML other m 2022-04-01T07:24:03.39
IV.FOSV.EHN. ML:2.1 0.00006765 1.08 AML other m 2022-04-01T07:24:06.35
IV.CSNT.HHN. ML:2.3 0.00005215 1.58 AML other m 2022-04-01T07:24:40.03
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download