Earthquake with magnitude of ML 1.3 on date 25-04-2020 and time 01:08:20 (UTC) in region 4 km S Fiano Romano (RM)

A magnitude ML 1.3 earthquake occured in region: 4 km S Fiano Romano (RM), on

  • 25-04-2020 01:08:20 (UTC)
  • 25-04-2020 03:08:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.14, 12.61 at 8 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
Fiano Romano RM 4 15360 15360
Capena RM 5 10592 25952
Civitella San Paolo RM 6 2066 28018
Morlupo RM 8 8696 36714
Castelnuovo di Porto RM 9 8630 45344
Riano RM 9 10466 55810
Nazzano RM 10 1436 57246
Monterotondo RM 10 40830 98076
Torrita Tiberina RM 11 1089 99165
Montelibretti RM 11 5323 104488
Mentana RM 12 22921 127409
Sant'Oreste RM 12 3687 131096
Rignano Flaminio RM 13 10277 141373
Filacciano RM 13 477 141850
Fara in Sabina RI 13 13742 155592
Ponzano Romano RM 13 1155 156747
Montopoli di Sabina RI 14 4210 160957
Sacrofano RM 14 7740 168697
Magliano Romano RM 14 1448 170145
Moricone RM 14 2650 172795
Toffia RI 15 1058 173853
Sant'Angelo Romano RM 15 5018 178871
Poggio Mirteto RI 15 6315 185186
Castelnuovo di Farfa RI 15 1059 186245
Nerola RM 15 1926 188171
Palombara Sabina RM 16 13269 201440
Fonte Nuova RM 16 32562 234002
Faleria VT 16 2179 236181
Montorio Romano RM 17 1984 238165
Mompeo RI 17 530 238695
Calcata VT 17 918 239613
Salisano RI 17 567 240180
Forano RI 17 3179 243359
Stimigliano RI 18 2328 245687
Poggio Nativo RI 18 2622 248309
Formello RM 18 12918 261227
Mazzano Romano RM 18 3165 264392
Campagnano di Roma RM 18 11571 275963
Poggio Catino RI 19 1341 277304
Guidonia Montecelio RM 19 88673 365977
Cantalupo in Sabina RI 19 1685 367662
Monteflavio RM 19 1348 369010
Frasso Sabino RI 19 743 369753
Scandriglia RI 20 3108 372861
Selci RI 20 1106 373967

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NW of Guidonia Montecelio (88673 inhabitants)
25 Km NW of Tivoli (56533 inhabitants)
29 Km NE of Roma (2864731 inhabitants)
47 Km S of Terni (111501 inhabitants)
51 Km NE of Fiumicino (78395 inhabitants)
51 Km SE of Viterbo (67173 inhabitants)
53 Km N of Velletri (53303 inhabitants)
53 Km N of Pomezia (62966 inhabitants)
61 Km N of Aprilia (73446 inhabitants)
67 Km E of Civitavecchia (52991 inhabitants)
69 Km W of L'Aquila (69753 inhabitants)
77 Km N of Anzio (54211 inhabitants)
79 Km NW of Latina (125985 inhabitants)
91 Km S of Foligno (57155 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.3 2020-04-25
01:08:20
42.14 12.61 8 2020-04-25
01:15:00
Sala Sismica INGV-Roma 78553881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-25 01:08:20 ± 0.1
Latitude 42.14 ± 0.00
Longitude 12.61 ± 0.01
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78553881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 666
Semi-minor axis of confidence ellipse (meter) 182
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 670
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 23
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
Epicentral distance of station farthest from the epicenter (degree) 0.88943
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 78553881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-25 01:15:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PE3.EHZ. 2020-04-25T01:09:11.55 3.0 undecidable manual S 2.32 0
IV.CESI.HHZ. 2020-04-25T01:08:50.75 0.6 undecidable manual S 14 0.8894 50 1.04 32
IV.MOMA.HHZ. 2020-04-25T01:08:43.69 1.0 undecidable manual S 358 0.6619 50 0.74 19
IV.CESX.HHZ. 2020-04-25T01:08:38.04 0.6 undecidable manual S 358 0.4658 50 0.88 37
IV.CESI.HHZ. 2020-04-25T01:08:37.06 1.0 positive manual P 14 0.8894 50 -0.17 21
IV.VIVA.HHZ. 2020-04-25T01:08:36.18 3.0 undecidable manual S -0.01 0
IV.ARRO.EHZ. 2020-04-25T01:08:36.68 0.6 undecidable manual S 15 0.4524 50 -0.07 48
IV.BARO.EHZ. 2020-04-25T01:08:35.58 0.3 undecidable manual S 285 0.4236 50 -0.33 68
IV.FIAM.HHZ. 2020-04-25T01:08:34.86 0.3 undecidable manual S 71 0.3993 50 -0.31 69
IV.SAMA.EHZ. 2020-04-25T01:08:34.26 0.1 undecidable manual S 182 0.3615 50 0.19 95
IV.RMP.HHZ. 2020-04-25T01:08:33.50 0.6 undecidable manual S 167 0.3381 50 0.12 48
IV.CERT.HHZ. 2020-04-25T01:08:33.05 0.3 undecidable manual S 125 0.3399 50 -0.36 69
IV.MOMA.HHZ. 2020-04-25T01:08:32.98 0.1 undecidable manual P 358 0.6619 50 -0.35 86
IV.LAV9.HHZ. 2020-04-25T01:08:30.34 1.0 negative manual P 171 0.4694 50 0.29 23
IV.ARRO.EHZ. 2020-04-25T01:08:29.45 0.6 positive manual P 15 0.4524 50 -0.3 46
IV.CESX.HHZ. 2020-04-25T01:08:29.76 1.0 negative manual P 358 0.4658 50 -0.22 23
IV.SAMA.EHZ. 2020-04-25T01:08:28.05 0.6 negative manual P 182 0.3615 50 -0.15 48
IV.RMP.HHZ. 2020-04-25T01:08:28.12 0.3 negative manual P 167 0.3381 50 0.32 70
IV.FIAM.HHZ. 2020-04-25T01:08:28.81 1.0 undecidable manual P 71 0.3993 50 -0.03 24
IV.BARO.EHZ. 2020-04-25T01:08:28.94 1.0 positive manual P 285 0.4236 50 -0.32 23
IV.CERT.HHZ. 2020-04-25T01:08:27.41 1.0 negative manual P 125 0.3399 50 -0.41 23
IV.MTCE.HHZ. 2020-04-25T01:08:26.87 0.6 undecidable manual S 140 0.1565 114 0.06 51
IV.SRES.HHZ. 2020-04-25T01:08:25.25 0.6 undecidable manual S 323 0.1178 121 -0.23 49
IV.MTCE.HHZ. 2020-04-25T01:08:24.14 0.1 positive manual P 140 0.1565 114 0.13 100
IV.SRES.HHZ. 2020-04-25T01:08:23.40 0.3 negative manual P 323 0.1178 121 0.16 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SRES.HHE. ML:1.2 0.0001825 0.24 AML other m 2020-04-25T01:08:26.23
IV.SRES.HHN. ML:1 0.000129 1.72 AML other m 2020-04-25T01:08:26.03
IV.MTCE.HHN. ML:1.4 0.0002405 0.28 AML other m 2020-04-25T01:08:27.15
IV.MTCE.HHE. ML:1.7 0.000473 0.16 AML other m 2020-04-25T01:08:27.09
IV.CERT.HHN. ML:0.9 2.83E-5 1.28 AML other m 2020-04-25T01:08:35.72
IV.CERT.HHE. ML:1 3.54E-5 0.46 AML other m 2020-04-25T01:08:35.37
IV.FIAM.HHE. ML:0.7 1.43E-5 0.42 AML other m 2020-04-25T01:08:35.73
IV.FIAM.HHN. ML:0.5 1.205E-5 1.02 AML other m 2020-04-25T01:08:36.63
IV.RMP.HHE. ML:1.7 0.000183 0.52 AML other m 2020-04-25T01:08:36.22
IV.RMP.HHN. ML:1.8 0.0002335 1.26 AML other m 2020-04-25T01:08:36.67
IV.ARRO.EHN. ML:1.2 3.985E-5 0.16 AML other m 2020-04-25T01:08:38.11
IV.ARRO.EHE. ML:1.1 3.165E-5 0.14 AML other m 2020-04-25T01:08:38.43
IV.CESX.HHN. ML:1.2 4.26E-5 0.58 AML other m 2020-04-25T01:08:38.61
IV.VIVA.HHN. ML:1.7 0.000149 0.46 AML other m 2020-04-25T01:08:39.61
IV.VIVA.HHE. ML:1.7 0.000141 1.7 AML other m 2020-04-25T01:08:40.03
IV.CESX.HHE. ML:1.2 3.865E-5 0.96 AML other m 2020-04-25T01:08:40.06
IV.MOMA.HHE. ML:1.4 3.745E-5 1.74 AML other m 2020-04-25T01:08:45.88
IV.MOMA.HHN. ML:1.5 4.98E-5 1.72 AML other m 2020-04-25T01:08:45.94
IV.CESI.HHE. ML:1.2 1.54E-5 0.98 AML other m 2020-04-25T01:08:52.69
IV.CESI.HHN. ML:1.3 2.195E-5 0.48 AML other m 2020-04-25T01:08:55.91
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download