Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 05-04-2020 and time 22:40:27 (Italy) in region 5 km S Castel Sant'Angelo (RI)

A magnitude ML 1.8 earthquake occured in region: 5 km S Castel Sant'Angelo (RI), on

  • 05-04-2020 20:40:27 (UTC)
  • 05-04-2020 22:40:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3510, 13.0370 at 10 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
Castel Sant'Angelo RI 5 1308 1308
Concerviano RI 5 291 1599
Borgo Velino RI 6 972 2571
Petrella Salto RI 7 1197 3768
Antrodoco RI 8 2588 6356
Cittaducale RI 8 6828 13184
Longone Sabino RI 10 597 13781
Micigliano RI 11 127 13908
Fiamignano RI 12 1413 15321
Belmonte in Sabina RI 12 636 15957
Rocca Sinibalda RI 12 815 16772
Varco Sabino RI 12 187 16959
Marcetelli RI 14 89 17048
Rieti RI 16 47698 64746
Castel di Tora RI 16 288 65034
Torricella in Sabina RI 17 1342 66376
Colle di Tora RI 17 372 66748
Cantalice RI 17 2755 69503
Ascrea RI 18 234 69737
Paganico Sabino RI 18 172 69909
Scoppito AQ 18 3727 73636
Pescorocchiano RI 19 2075 75711
Poggio San Lorenzo RI 19 589 76300
Collegiove RI 20 213 76513
Monteleone Sabino RI 20 1224 77737
Borbona RI 20 617 78354
Cagnano Amiterno AQ 20 1369 79723
Posta RI 20 694 80417
Montenero Sabino RI 20 299 80716

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km W of L'Aquila (69753 inhabitants)
40 Km SE of Terni (111501 inhabitants)
47 Km NE of Guidonia Montecelio (88673 inhabitants)
47 Km NE of Tivoli (56533 inhabitants)
65 Km SW of Teramo (54892 inhabitants)
68 Km NE of Roma (2864731 inhabitants)
73 Km SE of Foligno (57155 inhabitants)
77 Km N of Velletri (53303 inhabitants)
77 Km E of Viterbo (67173 inhabitants)
88 Km NE of Pomezia (62966 inhabitants)
90 Km NE of Aprilia (73446 inhabitants)
92 Km NE of Fiumicino (78395 inhabitants)
93 Km W of Chieti (51815 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
98 Km W of Pescara (121014 inhabitants)
99 Km N of Latina (125985 inhabitants)
99 Km SE of Perugia (166134 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 1.8 2020-04-05
20:40:27		 42.3512 13.037 10 2020-07-18
21:08:32		 Bollettino Sismico Italiano INGV 78073781
Reviewed
Rev100 		ML 1.8 2020-04-05
20:40:27		 42.347 13.0287 9 2020-04-05
20:51:00		 Sala Sismica INGV-Roma 77930941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-05 20:40:27 ± 0.06
Latitude 42.3512 ± 0.0027
Longitude 13.0370 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 78073781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 323
Semi-minor axis of confidence ellipse (meter) 259
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.66010
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 77930941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-05 20:51:00

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 78073781
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-10 10:03:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VITU.HHZ. 2020-04-05T20:40:58.31 3.0 undecidable manual Pg 0.09 0
IV.FAGN.HHZ. 2020-04-05T20:40:42.20 0.3 undecidable manual S 102 45.8208 50 -0.15 72
IV.CERT.HHZ. 2020-04-05T20:40:42.75 0.6 undecidable manual S 186 44.8218 50 0.66 42
IV.CESI.HHZ. 2020-04-05T20:40:40.30 0.3 undecidable manual P 352 73.2711 50 0.02 70
IV.SMA1.EHZ. 2020-04-05T20:40:40.24 0.6 undecidable manual S 38 39.4272 50 -0.4 46
IV.CAMP.HHE. 2020-04-05T20:40:40.58 0.6 undecidable manual S 56 36.741 50 0.67 42
IV.ARRO.EHZ. 2020-04-05T20:40:39.24 0.3 undecidable manual S 319 33.6441 50 0.14 73
MN.AQU.HNN. 2020-04-05T20:40:38.09 0.3 undecidable manual S 89 30.1476 50 -0.08 75
IV.LNSS.HHZ. 2020-04-05T20:40:37.37 0.3 undecidable manual S 1 27.9498 50 -0.2 73
IV.CESX.HHZ. 2020-04-05T20:40:36.14 0.3 undecidable manual P 308 46.62 50 -0.02 73
IV.PTQR.HHZ. 2020-04-05T20:40:36.02 0.3 undecidable manual P 141 47.2194 50 -0.23 70
IV.RM33.EHZ. 2020-04-05T20:40:36.01 0.3 undecidable manual S 40 22.755 114 -0.04 76
IV.SMA1.EHZ. 2020-04-05T20:40:35.23 0.1 undecidable manual P 38 39.4272 50 0.17 96
IV.MTCE.HHZ. 2020-04-05T20:40:35.87 0.3 undecidable manual P 214 43.7229 50 0.14 72
IV.CERT.HHZ. 2020-04-05T20:40:35.68 0.3 undecidable manual P 186 44.8218 50 -0.21 71
IV.SRES.HHZ. 2020-04-05T20:40:35.82 0.3 undecidable manual P 254 45.0216 50 -0.1 72
IV.FAGN.HHZ. 2020-04-05T20:40:35.98 0.3 undecidable manual P 102 45.8208 50 -0.07 73
IV.CAMP.HHE. 2020-04-05T20:40:34.70 0.1 undecidable manual P 56 36.741 50 0.07 99
IV.T1299.HNN. 2020-04-05T20:40:34.63 0.3 undecidable manual P 32 37.2294 50 -0.09 74
IV.ARRO.EHZ. 2020-04-05T20:40:34.01 0.3 undecidable manual P 319 33.6441 50 -0.16 73
IV.LNSS.HHZ. 2020-04-05T20:40:33.36 0.1 undecidable manual P 1 27.9498 50 0.08 100
MN.AQU.HNN. 2020-04-05T20:40:33.68 0.3 undecidable manual P 89 30.1476 50 0.05 75
IV.RM33.EHZ. 2020-04-05T20:40:32.55 0.1 undecidable manual P 40 22.755 114 0.15 100
IV.FIAM.HHZ. 2020-04-05T20:40:32.42 0.3 undecidable manual S 145 11.3775 131 -0.25 75
IT.MMP1.HGE. 2020-04-05T20:40:32.90 0.1 undecidable manual P 245 26.2515 50 -0.13 99
IV.FIAM.HHZ. 2020-04-05T20:40:30.68 0.1 negative manual P 145 11.3775 131 0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNE. ML:2.4 0.0015185585 0.2688 AML other m 2020-04-05T20:40:37.11
IV.RM33.EHE. ML:2.4 0.0014814505 0.2688 AML other m 2020-04-05T20:40:37.12
IV.LNSS.HNN. ML:1.9 0.0004595565 0.3456 AML other m 2020-04-05T20:40:38.15
IV.LNSS.HHN. ML:1.9 0.00045899845 0.32 AML other m 2020-04-05T20:40:38.32
IV.RM33.HNN. ML:1.9 0.0005857014 0.448 AML other m 2020-04-05T20:40:38.21
IV.RM33.EHN. ML:2.0 0.0006200209999999999 0.4608 AML other m 2020-04-05T20:40:38.22
IV.LNSS.HHE. ML:1.8 0.00034399040000000005 0.4352 AML other m 2020-04-05T20:40:40.51
IV.ARRO.EHN. ML:1.6 0.00015411264999999998 0.2048 AML other m 2020-04-05T20:40:41.43
IV.LNSS.HNE. ML:1.8 0.000332430825 0.16 AML other m 2020-04-05T20:40:42.43
IV.ARRO.EHE. ML:1.6 0.00015418155 0.256 AML other m 2020-04-05T20:40:43.17
IV.SMA1.EHN. ML:1.9 0.00028147500000000005 0.512 AML other m 2020-04-05T20:40:43.67
IV.SMA1.EHE. ML:1.6 0.0001455163 0.32 AML other m 2020-04-05T20:40:43.71
IV.SRES.HHE. ML:1.3 0.00006720201000000001 1.3472 AML other m 2020-04-05T20:40:45.02
IV.CESX.HHN. ML:1.4 0.00006821292500000001 0.4608 AML other m 2020-04-05T20:40:48.60
IV.SRES.HHN. ML:1.1 0.000037098464999999995 0.5504 AML other m 2020-04-05T20:40:48.90
IV.CESX.HHE. ML:1.2 0.000046416145 0.7168 AML other m 2020-04-05T20:40:51.42
IV.CESI.HHN. ML:1.7 0.000078048165 0.2688 AML other m 2020-04-05T20:40:52.56
IV.CESI.HNE. ML:2.2 0.00024772285 0.608 AML other m 2020-04-05T20:40:59.61
IV.CESI.HHE. ML:1.5 0.000047576480000000006 1.1936 AML other m 2020-04-05T20:40:59.36
IV.CESI.HNN. ML:2.2 0.00027625581 1.4304 AML other m 2020-04-05T20:41:09.20
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