Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 01-04-2020 and time 23:15:15 (UTC) in region 2 km SE Rocca Sinibalda (RI)

A magnitude ML 1.4 earthquake occured in region: 2 km SE Rocca Sinibalda (RI), on

  • 01-04-2020 23:15:15 (UTC)
  • 02-04-2020 01:15:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.2620, 12.9380 at 16 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
Rocca Sinibalda RI 2 815 815
Longone Sabino RI 3 597 1412
Castel di Tora RI 6 288 1700
Torricella in Sabina RI 6 1342 3042
Colle di Tora RI 6 372 3414
Monteleone Sabino RI 7 1224 4638
Varco Sabino RI 7 187 4825
Belmonte in Sabina RI 7 636 5461
Poggio San Lorenzo RI 8 589 6050
Concerviano RI 8 291 6341
Poggio Moiano RI 8 2751 9092
Ascrea RI 9 234 9326
Paganico Sabino RI 9 172 9498
Marcetelli RI 10 89 9587
Montenero Sabino RI 10 299 9886
Casaprota RI 11 744 10630
Frasso Sabino RI 11 743 11373
Pozzaglia Sabina RI 11 360 11733
Petrella Salto RI 12 1197 12930
Collegiove RI 13 213 13143
Poggio Nativo RI 13 2622 15765
Scandriglia RI 13 3108 18873
Cittaducale RI 14 6828 25701
Orvinio RI 14 405 26106
Turania RI 15 241 26347
Monte San Giovanni in Sabina RI 15 714 27061
Mompeo RI 15 530 27591
Fiamignano RI 16 1413 29004
Salisano RI 16 567 29571
Nespolo RI 16 246 29817
Toffia RI 16 1058 30875
Castelnuovo di Farfa RI 16 1059 31934
Nerola RM 17 1926 33860
Collalto Sabino RI 17 442 34302
Castel Sant'Angelo RI 17 1308 35610
Rieti RI 17 47698 83308
Montorio Romano RM 17 1984 85292
Fara in Sabina RI 18 13742 99034
Pescorocchiano RI 18 2075 101109
Percile RM 19 255 101364
Vivaro Romano RM 19 182 101546
Monteflavio RM 19 1348 102894
Borgo Velino RI 19 972 103866

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NE of Guidonia Montecelio (88673 inhabitants)
35 Km NE of Tivoli (56533 inhabitants)
39 Km W of L'Aquila (69753 inhabitants)
41 Km SE of Terni (111501 inhabitants)
55 Km NE of Roma (2864731 inhabitants)
65 Km N of Velletri (53303 inhabitants)
71 Km E of Viterbo (67173 inhabitants)
75 Km NE of Pomezia (62966 inhabitants)
77 Km SW of Teramo (54892 inhabitants)
78 Km NE of Aprilia (73446 inhabitants)
79 Km NE of Fiumicino (78395 inhabitants)
80 Km S of Foligno (57155 inhabitants)
88 Km N of Latina (125985 inhabitants)
94 Km N of Anzio (54211 inhabitants)
96 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
Reviewed
Rev100 		ML 1.4 2020-04-01
23:15:15		 42.2615 12.9378 16 2020-04-01
23:20:58		 Sala Sismica INGV-Roma 77769651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-01 23:15:15 ± 0.06
Latitude 42.2615 ± 0.0027
Longitude 12.9378 ± 0.0036
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77769651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 299
Semi-minor axis of confidence ellipse (meter) 133
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 309
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.58636
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 77769651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-01 23:20:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRMI.HHZ. 2020-04-01T23:15:54.46 3.0 undecidable manual Pg 4.45 0
IV.CPGN.EHZ. 2020-04-01T23:15:43.64 3.0 undecidable manual Pn 0.47 0
IV.MF5.EHZ. 2020-04-01T23:15:31.23 3.0 positive manual P -0.18 0
IV.FDMO.HHZ. 2020-04-01T23:15:30.48 3.0 negative manual P -0.19 0
IV.CESI.HHZ. 2020-04-01T23:15:29.77 3.0 positive manual P -0.17 0
IV.MMO1.EHZ. 2020-04-01T23:15:28.76 3.0 positive manual P -0.38 0
IV.LNSS.HNZ. 2020-04-01T23:15:28.25 0.3 undecidable manual S 12 38.8278 100 0.07 95
IV.SRES.HHZ. 2020-04-01T23:15:27.64 0.6 undecidable manual S 266 35.2425 101 0.39 60
IV.ARRO.EHZ. 2020-04-01T23:15:27.91 0.3 undecidable manual S 338 37.9287 100 -0.05 95
IV.CERT.HHZ. 2020-04-01T23:15:27.07 0.3 undecidable manual S 174 34.8429 101 -0.08 97
IV.RM33.EHZ. 2020-04-01T23:15:27.24 0.3 undecidable manual S 39 35.6421 101 -0.1 95
IV.MTCE.HHZ. 2020-04-01T23:15:26.00 0.3 undecidable manual S 211 30.9468 104 -0.14 96
IV.NRCA.HHZ. 2020-04-01T23:15:26.63 0.3 undecidable manual P 13 65.0904 95 -0.11 90
IV.SMA1.EHZ. 2020-04-01T23:15:24.90 0.6 undecidable manual P 38 52.3032 97 0.12 61
IV.FIAM.HHZ. 2020-04-01T23:15:22.22 0.3 undecidable manual S 87 14.7741 127 0.06 100
IV.LNSS.HNZ. 2020-04-01T23:15:22.64 0.3 undecidable manual P 12 38.8278 100 -0.08 95
IV.RM33.EHZ. 2020-04-01T23:15:22.25 0.3 positive manual P 39 35.6421 101 0.01 97
IV.SRES.HHZ. 2020-04-01T23:15:22.19 0.6 undecidable manual P 266 35.2425 101 0 64
IT.MMP1.HGZ. 2020-04-01T23:15:22.10 0.3 undecidable manual S 265 15.6732 124 -0.25 95
IV.ARRO.EHZ. 2020-04-01T23:15:22.60 0.3 undecidable manual P 338 37.9287 100 0.01 96
IV.CERT.HHZ. 2020-04-01T23:15:22.07 0.3 positive manual P 174 34.8429 101 -0.05 97
IV.MTCE.HHZ. 2020-04-01T23:15:21.54 0.3 positive manual P 211 30.9468 104 0 97
IV.FIAM.HHZ. 2020-04-01T23:15:19.40 0.3 undecidable manual P 87 14.7741 127 0.15 98
IT.MMP1.HGZ. 2020-04-01T23:15:19.46 0.3 undecidable manual P 265 15.6732 124 0.1 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FIAM.HHN. ML:1.1 0.0001061 0.68 AML other m 2020-04-01T23:15:22.82
IV.FIAM.HHE. ML:1.1 0.0000948 0.16 AML other m 2020-04-01T23:15:22.53
IV.ARRO.EHE. ML:1.3 0.00006415 1.38 AML other m 2020-04-01T23:15:28.30
IV.ARRO.EHN. ML:1.6 0.0001225 0.62 AML other m 2020-04-01T23:15:28.35
IV.CERT.HHN. ML:1.2 0.00005705 0.76 AML other m 2020-04-01T23:15:28.74
IV.RM33.EHN. ML:1.4 0.00008340000000000001 0.76 AML other m 2020-04-01T23:15:28.43
IV.CERT.HHE. ML:1.3 0.00007795 0.94 AML other m 2020-04-01T23:15:28.57
IV.RM33.EHE. ML:1.4 0.00010445 1.36 AML other m 2020-04-01T23:15:28.05
IV.NRCA.HHE. ML:1.7 0.00009655 0.54 AML other m 2020-04-01T23:15:36.71
IV.NRCA.HHN. ML:1.5 0.0000583 1.38 AML other m 2020-04-01T23:15:37.73
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