Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 12-04-2018 and time 12:48:39 (Italy) in region 1 km NE Monte Compatri (RM)

A magnitude ML 2.2 earthquake occured in region: 1 km NE Monte Compatri (RM), on

  • 12-04-2018 10:48:39 (UTC)
  • 12-04-2018 12:48:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.8200, 12.7440 at 11 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
Monte Compatri RM 1 11978 11978
Colonna RM 2 4287 16265
Monte Porzio Catone RM 2 8693 24958
Rocca Priora RM 3 11962 36920
San Cesareo RM 5 15153 52073
Frascati RM 5 22087 74160
Rocca di Papa RM 7 17034 91194
Grottaferrata RM 7 20327 111521
Zagarolo RM 8 17843 129364
Gallicano nel Lazio RM 9 6334 135698
Marino RM 9 43026 178724
Castel Gandolfo RM 11 8997 187721
Nemi RM 11 1943 189664
Ciampino RM 12 38412 228076
Albano Laziale RM 12 41715 269791
Palestrina RM 12 21672 291463
Labico RM 12 6379 297842
Lariano RM 13 13432 311274
Ariccia RM 13 19407 330681
Castel San Pietro Romano RM 13 902 331583
Genzano di Roma RM 13 23970 355553
Poli RM 15 2418 357971
Velletri RM 15 53303 411274
Valmontone RM 15 15959 427233
Casape RM 15 744 427977
San Gregorio da Sassola RM 15 1619 429596
Cave RM 16 11287 440883
Lanuvio RM 16 13632 454515
Tivoli RM 17 56533 511048
Artena RM 17 14276 525324
Rocca di Cave RM 17 377 525701
Capranica Prenestina RM 18 351 526052
Genazzano RM 19 6036 532088

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km N of Velletri (53303 inhabitants)
17 Km S of Tivoli (56533 inhabitants)
20 Km S of Guidonia Montecelio (88673 inhabitants)
23 Km E of Roma (2864731 inhabitants)
26 Km NE of Pomezia (62966 inhabitants)
26 Km NE of Aprilia (73446 inhabitants)
41 Km NW of Latina (125985 inhabitants)
42 Km E of Fiumicino (78395 inhabitants)
42 Km N of Anzio (54211 inhabitants)
80 Km SW of L'Aquila (69753 inhabitants)
83 Km S of Terni (111501 inhabitants)
84 Km E of Civitavecchia (52991 inhabitants)
85 Km SE of Viterbo (67173 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 2.2 2018-04-12
10:48:39		 41.8198 12.744 11 2019-04-24
14:49:24		 Bollettino Sismico Italiano INGV 55547861
Reviewed
Rev100 		ML 0.6 2018-04-12
10:48:37		 43.0768 13.0498 7 2018-04-12
11:29:46		 Sala Sismica INGV-Roma 55497851
Reviewed
Rev100 		ML 2.1 2018-04-12
10:48:38		 41.8378 12.715 13 2018-04-12
11:26:46		 Sala Sismica INGV-Roma 55497751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-04-12 10:48:39 ± 0.04
Latitude 41.8198 ± 0.0036
Longitude 12.7440 ± 0.0036
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 55547861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 356
Semi-minor axis of confidence ellipse (meter) 339
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 210
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 43
Number of associated phases, regardless of their use for origin computation 50
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.44161
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 55497751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-04-12 11:26:46

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 55547861
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-07-06 18:12:42

ML:0.6

Field Value
Value 0.6
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 55497851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-04-12 11:29:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRJA.HHZ. 2018-04-12T10:50:26.43 3.0 undecidable manual Sn -4.13 0
IV.MBAL.EHZ. 2018-04-12T10:50:22.15 3.0 undecidable manual Sg 15.52 0
IV.VOBA.HNZ. 2018-04-12T10:50:13.53 3.0 undecidable manual Sn 5.28 0
IV.NDIM.HNZ. 2018-04-12T10:49:52.31 3.0 undecidable manual Sn 3.4 0
CR.ZAG.BHZ. 2018-04-12T10:49:33.90 3.0 negative manual Pn 4.75 0
MN.TRI.HHZ. 2018-04-12T10:49:31.59 3.0 negative manual Pg 12.1 0
BA.PZUN.HHZ. 2018-04-12T10:49:18.95 3.0 undecidable manual Pg 7.43 0
IV.CDCA.HNZ. 2018-04-12T10:49:06.33 3.0 undecidable manual S -0.62 0
IV.VVLD.HHZ. 2018-04-12T10:49:01.25 1.0 undecidable manual S 85 72.8715 50 0.06 22
IV.IFOR.HHZ. 2018-04-12T10:49:00.33 3.0 positive manual P 153.9348 -4.08 0
IV.FIAM.HNN. 2018-04-12T10:48:57.69 0.3 undecidable manual S 32 58.497 50 0.35 64
IV.PTQR.HHZ. 2018-04-12T10:48:57.68 0.6 undecidable manual S 67 58.5969 50 0.28 43
IV.GIUL.HHZ. 2018-04-12T10:48:55.82 0.3 undecidable manual S 124 51.3153 50 0.39 65
IV.SRES.HHN. 2018-04-12T10:48:55.29 0.6 undecidable manual S 337 50.1165 50 0.17 45
IV.GUAR.HHZ. 2018-04-12T10:48:54.29 0.3 undecidable manual S 93 47.1195 50 -0.02 70
IV.LATB.EHZ. 2018-04-12T10:48:52.19 0.6 undecidable manual S 153 40.4262 50 -0.34 44
IV.TOLF.HHZ. 2018-04-12T10:48:51.08 0.1 undecidable manual P 294 67.0773 50 0.06 90
IV.VVLD.HHZ. 2018-04-12T10:48:51.67 0.1 positive manual P 85 72.8715 50 -0.24 85
IV.FIAM.HNN. 2018-04-12T10:48:49.49 0.1 undecidable manual P 32 58.497 50 -0.2 88
IV.PTQR.HHZ. 2018-04-12T10:48:49.77 0.1 undecidable manual P 67 58.5969 50 0.05 91
IV.GIUL.HHZ. 2018-04-12T10:48:48.61 0.3 undecidable manual P 124 51.3153 50 0.02 70
IV.SRES.HHN. 2018-04-12T10:48:48.63 0.3 undecidable manual P 337 50.1165 50 0.22 67
IV.MTCE.HHZ. 2018-04-12T10:48:47.48 0.6 undecidable manual S 360 22.5552 50 -0.27 46
IV.GUAR.HHZ. 2018-04-12T10:48:47.76 0.3 undecidable manual P 93 47.1195 50 -0.17 68
IV.CERT.HHZ. 2018-04-12T10:48:47.94 0.3 undecidable manual S 54 24.2535 50 -0.29 69
IV.T1221.EHZ. 2018-04-12T10:48:47.34 3.0 undecidable manual S 2.73 0
IV.RCAV.EHZ. 2018-04-12T10:48:46.19 0.3 undecidable manual S 80 16.872 123 -0.01 74
IV.LATB.EHZ. 2018-04-12T10:48:46.54 0.1 undecidable manual P 153 40.4262 50 -0.37 88
IV.LAV9.HHZ. 2018-04-12T10:48:46.05 0.3 undecidable manual S 193 16.1727 124 0.06 74
IV.LPEL.HHZ. 2018-04-12T10:48:46.24 3.0 undecidable manual P 121.3896 -9.99 0
IV.MTCE.HHZ. 2018-04-12T10:48:44.00 0.1 undecidable manual P 360 22.5552 50 -0.15 95
IV.VIVA.HHZ. 2018-04-12T10:48:44.07 0.3 undecidable manual S 164 7.9809 143 0.16 73
IV.CERT.HHZ. 2018-04-12T10:48:44.37 0.1 undecidable manual P 54 24.2535 50 -0.06 97
IV.RDP.HHZ. 2018-04-12T10:48:43.60 0.3 undecidable manual S 203 7.1928 147 -0.14 74
IV.LAV9.HHZ. 2018-04-12T10:48:43.30 0.1 undecidable manual P 193 16.1727 124 0.17 96
IV.MA9.HHZ. 2018-04-12T10:48:43.63 0.3 undecidable manual S 232 8.9799 140 -0.48 68
IV.RCAV.EHZ. 2018-04-12T10:48:43.35 0.1 undecidable manual P 80 16.872 123 0.1 97
IV.ROM9.HNE. 2018-04-12T10:48:43.87 0.1 undecidable manual P 273 18.87 50 0.28 93
IV.VIVA.HHZ. 2018-04-12T10:48:42.20 0.1 undecidable manual P 164 7.9809 143 0.27 95
IV.SNTG.HHZ. 2018-04-12T10:48:42.56 3.0 undecidable manual P 160.0176 -9.99 0
IV.RDP.HHZ. 2018-04-12T10:48:42.01 0.1 undecidable manual P 203 7.1928 147 0.18 97
IV.RMP.HHZ. 2018-04-12T10:48:42.96 0.3 undecidable manual S 254 3.5964 162 -0.23 73
IV.MA9.HHZ. 2018-04-12T10:48:42.02 0.1 undecidable manual P 232 8.9799 140 -0.03 100
IV.RMP.HHZ. 2018-04-12T10:48:41.60 0.1 negative manual P 254 3.5964 162 0.08 100
IV.CESI.HHZ. 2018-04-12T10:48:41.12 3.0 positive manual P 132.0678 -9.99 0
IV.PF6.EHZ. 2018-04-12T10:48:40.96 3.0 undecidable manual P 150.738 -9.99 0
IV.CSP1.EHZ. 2018-04-12T10:48:40.93 3.0 positive manual P 146.0427 -9.99 0
IV.MML1.EHZ. 2018-04-12T10:48:40.10 3.0 negative manual P -1.56 0
IV.T1220.EHZ. 2018-04-12T10:48:39.78 3.0 negative manual P -1.94 0
IV.FDMO.HHZ. 2018-04-12T10:48:39.61 3.0 undecidable manual P 137.862 -9.99 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHN. ML:2.0 0.000142 0.34 AML other m 2018-04-12T10:49:02.37
IV.MA9.HHN. ML:2.6 0.00535 0.3 AML other m 2018-04-12T10:48:43.69
IV.RDP.HHN. ML:2.7 0.00723 0.42 AML other m 2018-04-12T10:48:43.97
IV.RDP.HHE. ML:2.8 0.00956 1.5 AML other m 2018-04-12T10:48:43.91
IV.VIVA.HHE. ML:3.0 0.012850000000000002 0.42 AML other m 2018-04-12T10:48:44.37
IV.VIVA.HHN. ML:2.8 0.008795 1.06 AML other m 2018-04-12T10:48:45.35
IV.RCAV.EHN. ML:2.1 0.001107 0.2 AML other m 2018-04-12T10:48:47.59
IV.RCAV.EHE. ML:1.9 0.0009285000000000001 0.96 AML other m 2018-04-12T10:48:48.22
IV.MTCE.HHN. ML:1.6 0.000363 1.56 AML other m 2018-04-12T10:48:48.81
IV.MA9.HHE. ML:2.3 0.00266 0.82 AML other m 2018-04-12T10:48:48.81
IV.CERT.HHN. ML:2.0 0.0005665000000000001 0.62 AML other m 2018-04-12T10:48:49.35
IV.LAV9.HHE. ML:2.3 0.003405 1.68 AML other m 2018-04-12T10:48:49.85
IV.LAV9.HNE. ML:2.3 0.00336 1.68 AML other m 2018-04-12T10:48:49.86
IV.CERT.HHE. ML:2.0 0.0007875 0.5 AML other m 2018-04-12T10:48:50.74
IV.MTCE.HHE. ML:1.6 0.0003985 0.44 AML other m 2018-04-12T10:48:51.14
IV.LAV9.HHN. ML:2.4 0.003175 0.38 AML other m 2018-04-12T10:48:52.74
IV.LAV9.HNN. ML:2.4 0.00304 0.38 AML other m 2018-04-12T10:48:52.75
IV.GUAR.HHN. ML:2.0 0.0003035 0.54 AML other m 2018-04-12T10:48:56.58
IV.GIUL.HHN. ML:2.1 0.00033899999999999995 0.16 AML other m 2018-04-12T10:48:56.56
IV.GIUL.HHE. ML:1.9 0.0002145 0.48 AML other m 2018-04-12T10:48:57.86
IV.GUAR.HHE. ML:1.8 0.0002725 0.28 AML other m 2018-04-12T10:48:58.37
IV.PTQR.HHE. ML:1.8 0.0001255 0.72 AML other m 2018-04-12T10:48:58.81
IV.PTQR.HHN. ML:2.0 0.00018825930000000002 0.4416 AML other m 2018-04-12T10:48:58.25
IV.VVLD.HHE. ML:2.1 0.000199 0.42 AML other m 2018-04-12T10:49:02.13
IV.RMP.HHN. ML:2.8 0.0096624225 0.4416 AML other m 2018-04-12T10:48:43.25
IV.RMP.HHE. ML:2.8 0.010656404999999999 0.32 AML other m 2018-04-12T10:48:43.03
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
Waveforms Seismic signals in miniseed + resp format Download