Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 24-04-2020 and time 05:31:12 (Italy) in region 4 km SE Amelia (TR)

A magnitude ML 1.4 earthquake occured in region: 4 km SE Amelia (TR), on

  • 24-04-2020 03:31:12 (UTC)
  • 24-04-2020 05:31:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5310, 12.4370 at 7 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
Amelia TR 4 11897 11897
Narni TR 7 19785 31682
Penna in Teverina TR 8 1099 32781
Orte VT 9 8923 41704
Giove TR 9 1928 43632
Lugnano in Teverina TR 10 1494 45126
Attigliano TR 12 2028 47154
Otricoli TR 12 1869 49023
Bassano in Teverina VT 13 1313 50336
San Gemini TR 13 5018 55354
Alviano TR 13 1463 56817
Avigliano Umbro TR 14 2558 59375
Montecastrilli TR 14 5022 64397
Vasanello VT 14 4068 68465
Guardea TR 15 1836 70301
Bomarzo VT 16 1805 72106
Terni TR 18 111501 183607
Gallese VT 18 2849 186456
Calvi dell'Umbria TR 18 1856 188312
Stroncone TR 19 4917 193229
Magliano Sabina RI 19 3774 197003
Montecchio TR 19 1676 198679
Graffignano VT 20 2292 200971
Acquasparta TR 20 4778 205749

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km W of Terni (111501 inhabitants)
30 Km E of Viterbo (67173 inhabitants)
52 Km SW of Foligno (57155 inhabitants)
64 Km NW of Guidonia Montecelio (88673 inhabitants)
64 Km S of Perugia (166134 inhabitants)
70 Km NW of Tivoli (56533 inhabitants)
71 Km N of Roma (2864731 inhabitants)
72 Km NE of Civitavecchia (52991 inhabitants)
81 Km W of L'Aquila (69753 inhabitants)
86 Km N of Fiumicino (78395 inhabitants)
96 Km N of Pomezia (62966 inhabitants)
98 Km N of Velletri (53303 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 1.4 2020-04-24
03:31:12		 42.5307 12.4368 7 2020-07-18
21:08:36		 Bollettino Sismico Italiano INGV 79040011
Reviewed
Rev100 		ML 1.4 2020-04-24
03:31:12		 42.5305 12.4292 7 2020-04-24
03:41:34		 Sala Sismica INGV-Roma 78519871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-24 03:31:12 ± 0.06
Latitude 42.5307 ± 0.0027
Longitude 12.4368 ± 0.0037
Depth (km) 7 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79040011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 299
Semi-minor axis of confidence ellipse (meter) 233
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 325
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) 60
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.69518
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 23
Type of magnitude ML
Reference to an origin 78519871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-24 03:41:34

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 25
Type of magnitude ML
Reference to an origin 79040011
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-11 07:17:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AGLI.HHZ. 2020-04-24T03:32:40.36 3.0 undecidable manual Sg 2.87 0
IT.PLTA.HNZ. 2020-04-24T03:32:15.93 3.0 undecidable manual Sg 3.7 0
IV.CADC.HNZ. 2020-04-24T03:32:12.33 3.0 undecidable manual Pg 4.61 0
IV.FDMO.HHZ. 2020-04-24T03:31:37.29 0.3 undecidable manual S 43 77.1672 50 0.47 62
IV.SMA1.EHZ. 2020-04-24T03:31:36.33 0.6 undecidable manual S 81 74.1702 50 0.3 43
IV.CESI.HHE. 2020-04-24T03:31:33.93 1.0 undecidable manual S 36 64.9905 50 0.37 22
IV.NRCA.HHZ. 2020-04-24T03:31:33.47 0.3 undecidable manual S 58 64.6908 50 -0.01 70
IV.TOLF.HHN. 2020-04-24T03:31:33.28 0.6 undecidable manual S 215 62.9925 50 0.26 45
IV.MTCE.HHZ. 2020-04-24T03:31:32.78 0.3 undecidable manual S 156 61.6938 50 0.1 70
IV.SACS.HHZ. 2020-04-24T03:31:31.29 0.6 undecidable manual S 310 55.5999 50 0.22 46
IV.LATE.HHZ. 2020-04-24T03:31:30.58 0.6 undecidable manual S 280 52.503 50 0.34 45
IV.VCEL.EHZ. 2020-04-24T03:31:30.89 3.0 undecidable manual P -3.94 0
IV.LNSS.HNZ. 2020-04-24T03:31:29.48 0.3 undecidable manual S 81 49.9167 50 -0.07 71
IV.MGAB.HHZ. 2020-04-24T03:31:29.81 0.3 undecidable manual S 328 49.9167 50 0.25 69
IV.BARO.HNZ. 2020-04-24T03:31:28.16 0.3 undecidable manual S 225 44.5221 50 0.06 72
IV.SMA1.EHZ. 2020-04-24T03:31:26.02 0.1 undecidable manual P 81 74.1702 50 -0.21 89
IV.FDMO.HHZ. 2020-04-24T03:31:26.33 0.1 undecidable manual P 43 77.1672 50 -0.35 85
IT.MMP1.HGE. 2020-04-24T03:31:26.68 0.3 undecidable manual S 141 40.3263 50 -0.31 69
IV.ATTE.HHZ. 2020-04-24T03:31:26.29 0.1 undecidable manual P 355 74.37 50 0.04 92
IV.NRCA.HHZ. 2020-04-24T03:31:24.54 0.1 undecidable manual P 58 64.6908 50 -0.22 90
IV.TOLF.HHN. 2020-04-24T03:31:24.76 0.3 undecidable manual P 215 62.9925 50 0.26 67
IV.MTCE.HHZ. 2020-04-24T03:31:24.30 0.1 undecidable manual P 156 61.6938 50 0 95
IT.GNU.HGE. 2020-04-24T03:31:24.67 0.6 undecidable manual S 20 32.1456 102 0.4 46
IV.SRES.HHZ. 2020-04-24T03:31:24.48 0.3 undecidable manual S 170 33.1446 102 -0.11 73
IV.CESI.HHE. 2020-04-24T03:31:24.41 0.1 undecidable manual P 36 64.9905 50 -0.39 87
IV.MOMA.HHZ. 2020-04-24T03:31:23.88 0.3 undecidable manual S 20 32.2455 102 -0.39 69
IV.LATE.HHZ. 2020-04-24T03:31:23.03 0.1 undecidable manual P 280 52.503 50 0.14 93
IV.SACS.HHZ. 2020-04-24T03:31:23.40 0.1 undecidable manual P 310 55.5999 50 0.03 95
IV.ARRO.EHZ. 2020-04-24T03:31:22.83 0.3 undecidable manual S 79 27.4503 104 0.18 73
IV.MGAB.HHZ. 2020-04-24T03:31:22.29 0.1 positive manual P 328 49.9167 50 -0.2 93
IV.LNSS.HNZ. 2020-04-24T03:31:22.24 0.1 undecidable manual P 81 49.9167 50 -0.25 92
IV.BARO.HNZ. 2020-04-24T03:31:21.42 0.1 undecidable manual P 225 44.5221 50 -0.23 93
IT.MMP1.HGE. 2020-04-24T03:31:21.27 0.3 undecidable manual P 141 40.3263 50 0.26 70
IT.TRN1.HGN. 2020-04-24T03:31:19.71 0.3 undecidable manual S 80 17.3715 112 0.38 71
IV.SRES.HHZ. 2020-04-24T03:31:19.47 0.1 undecidable manual P 170 33.1446 102 -0.15 97
IV.MOMA.HHZ. 2020-04-24T03:31:19.03 0.1 undecidable manual P 20 32.2455 102 -0.41 92
IT.GNU.HGE. 2020-04-24T03:31:19.30 0.1 undecidable manual P 20 32.1456 102 -0.14 97
IV.ARRO.EHZ. 2020-04-24T03:31:18.54 0.1 undecidable manual P 79 27.4503 104 0.03 100
IV.CESX.HHZ. 2020-04-24T03:31:18.68 0.3 undecidable manual S 55 14.9739 115 0.11 75
IV.CESX.HHZ. 2020-04-24T03:31:16.30 0.1 negative manual P 55 14.9739 115 0.15 100
IT.TRN1.HGN. 2020-04-24T03:31:16.97 0.1 undecidable manual P 80 17.3715 112 0.38 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHE. ML:1.2 0.00017254665 0.2 AML other m 2020-04-24T03:31:20.30
IV.CESX.HHN. ML:1.3 0.0001987483 0.2592 AML other m 2020-04-24T03:31:24.65
IV.ARRO.EHN. ML:1.5 0.0001887453 0.3008 AML other m 2020-04-24T03:31:25.03
IV.ARRO.EHE. ML:1.4 0.0001257363 1.72 AML other m 2020-04-24T03:31:25.08
IV.MOMA.HHE. ML:1.2 0.000078878555 0.2192 AML other m 2020-04-24T03:31:25.95
IV.SRES.HHN. ML:0.9 0.00003415016 0.64 AML other m 2020-04-24T03:31:26.32
IV.MOMA.HHN. ML:1.2 0.00007665894000000001 0.2208 AML other m 2020-04-24T03:31:27.61
IV.MOMA.HNE. ML:1.4 0.00011576962 0.44 AML other m 2020-04-24T03:31:28.42
IV.SRES.HHE. ML:0.8 0.000030801724999999995 0.4384 AML other m 2020-04-24T03:31:30.05
IV.MOMA.HNN. ML:1.4 0.0001034202 0.4304 AML other m 2020-04-24T03:31:30.52
IV.MGAB.HNN. ML:1.6 0.00009964999999999998 0.3 AML other m 2020-04-24T03:31:30.55
IV.MGAB.HHN. ML:1.6 0.00009665 0.24 AML other m 2020-04-24T03:31:30.70
IV.MGAB.HNE. ML:1.8 0.00015033245 0.44 AML other m 2020-04-24T03:31:31.04
IV.LATE.HHE. ML:1.3 0.000046496425 0.2592 AML other m 2020-04-24T03:31:31.42
IV.LATE.HHN. ML:1.5 0.00007364999999999999 0.5 AML other m 2020-04-24T03:31:32.15
IV.MGAB.HHE. ML:1.7 0.00013900000000000002 0.5 AML other m 2020-04-24T03:31:33.24
IV.NRCA.HHN. ML:1.4 0.000042615544999999995 0.1392 AML other m 2020-04-24T03:31:36.32
IV.NRCA.HHE. ML:1.5 0.000059050000000000006 0.9 AML other m 2020-04-24T03:31:37.28
IV.SMA1.EHE. ML:1.9 0.00011449999999999999 0.3 AML other m 2020-04-24T03:31:38.28
IV.SMA1.EHN. ML:1.6 0.000060100000000000004 0.58 AML other m 2020-04-24T03:31:38.83
IV.SACS.HHN. ML:1.1 0.000030462745 1.32 AML other m 2020-04-24T03:31:39.92
IV.FDMO.HHN. ML:1.2 0.000024656125 0.4592 AML other m 2020-04-24T03:31:41.77
IV.FDMO.HHE. ML:1.3 0.00002895 0.4 AML other m 2020-04-24T03:31:42.69
IV.ATTE.HHE. ML:1.4 0.0000365823 0.28 AML other m 2020-04-24T03:31:43.27
IV.ATTE.HHN. ML:1.3 0.000030050000000000002 0.8 AML other m 2020-04-24T03:31:43.63
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