Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 25-05-2020 and time 04:54:39 (UTC) in region 3 km SW Castel Giorgio (TR)

A magnitude ML 1.9 earthquake occured in region: 3 km SW Castel Giorgio (TR), on

  • 25-05-2020 04:54:39 (UTC)
  • 25-05-2020 06:54:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6860, 11.9540 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 Giorgio TR 3 2131 2131
San Lorenzo Nuovo VT 4 2091 4222
Bolsena VT 5 3991 8213
Grotte di Castro VT 7 2683 10896
Castel Viscardo TR 9 2938 13834
Gradoli VT 9 1353 15187
Acquapendente VT 10 5506 20693
Onano VT 11 995 21688
Latera VT 12 836 22524
Porano TR 12 1966 24490
Proceno VT 13 557 25047
Orvieto TR 13 20630 45677
Bagnoregio VT 14 3650 49327
Lubriano VT 14 909 50236
Allerona TR 14 1794 52030
Capodimonte VT 16 1731 53761
Marta VT 17 3499 57260
Valentano VT 17 2868 60128
Montefiascone VT 18 13432 73560
Ficulle TR 19 1669 75229
Sorano GR 20 3428 78657
Celleno VT 20 1355 80012

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of Viterbo (67173 inhabitants)
58 Km W of Terni (111501 inhabitants)
59 Km SW of Perugia (166134 inhabitants)
67 Km N of Civitavecchia (52991 inhabitants)
68 Km W of Foligno (57155 inhabitants)
69 Km E of Grosseto (82087 inhabitants)
87 Km SE of Siena (53903 inhabitants)
87 Km S of Arezzo (99543 inhabitants)
98 Km NW of Roma (2864731 inhabitants)
99 Km NW of Guidonia Montecelio (88673 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 1.9 2020-05-25
04:54:39		 42.6862 11.9537 10 2020-11-19
12:36:51		 Bollettino Sismico Italiano INGV 80828141
Reviewed
Rev100 		ML 2.0 2020-05-25
04:54:39		 42.6885 11.9527 10 2020-05-25
05:12:07		 Sala Sismica INGV-Roma 79540931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-25 04:54:39 ± 0.1
Latitude 42.6862 ± 0.0054
Longitude 11.9537 ± 0.0061
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80828141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 561
Semi-minor axis of confidence ellipse (meter) 252
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 171
Circular confidence region, given by single value of horizontal uncertainty (meter) 560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.98386
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 79540931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-25 05:12:07

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 49
Type of magnitude ML
Reference to an origin 80828141
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-14 01:00:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SALB.HHZ. 2020-05-25T04:56:36.14 3.0 undecidable manual Sn -1.01 0
IV.LINA.HHZ. 2020-05-25T04:56:33.01 3.0 undecidable manual Pg 16.15 0
GU.ROTM.HHZ. 2020-05-25T04:56:18.25 3.0 undecidable manual Sg 15.95 0
IV.PAOL.HHZ. 2020-05-25T04:56:01.19 3.0 undecidable manual Sg 7.59 0
GU.RNCA.HHZ. 2020-05-25T04:55:59.13 3.0 undecidable manual Sg 10.77 0
IV.MSRU.HHZ. 2020-05-25T04:55:57.34 3.0 negative manual Pn 1.8 0
CR.ZAG.BHZ. 2020-05-25T04:55:48.46 3.0 positive manual Pn 6.16 0
GU.GENL.EHZ. 2020-05-25T04:55:45.12 3.0 undecidable manual Sn -1.96 0
IV.PTRJ.HNZ. 2020-05-25T04:55:44.10 3.0 undecidable manual Sn -4.16 0
IV.ROSPO.HHZ. 2020-05-25T04:55:43.44 3.0 undecidable manual Sn -3.27 0
IV.PZUN.HHZ. 2020-05-25T04:55:36.12 3.0 negative manual Pn 2.41 0
IV.POFI.HHZ. 2020-05-25T04:55:30.50 3.0 undecidable manual Sn -0.49 0
IV.PTRJ.HNZ. 2020-05-25T04:55:28.92 3.0 undecidable manual Pg 11.74 0
IV.CPOZ.HHZ. 2020-05-25T04:55:17.60 3.0 positive manual Pn -1.07 0
IV.PARC.HHZ. 2020-05-25T04:54:58.52 0.3 undecidable manual P 12 109.2129 50 0.34 59
IV.FDMO.HHZ. 2020-05-25T04:54:57.44 0.3 undecidable manual P 67 100.0221 50 0.68 54
IV.CASP.HHE. 2020-05-25T04:54:56.08 0.3 undecidable manual P 278 89.4438 50 0.95 49
IV.MOMA.HHZ. 2020-05-25T04:54:56.81 0.6 undecidable manual S 75 51.9036 50 0.51 42
IV.BARO.EHZ. 2020-05-25T04:54:55.10 0.6 undecidable manual S 171 49.3173 50 -0.5 42
IV.ATFO.HHZ. 2020-05-25T04:54:55.87 0.3 undecidable manual P 33 90.6426 50 0.56 58
IV.ATVO.HHZ. 2020-05-25T04:54:54.59 0.1 negative manual P 25 85.4478 50 0.07 87
IV.ARCI.HHZ. 2020-05-25T04:54:54.46 0.6 undecidable manual S 295 43.0236 50 0.52 43
IV.CESI.HHZ. 2020-05-25T04:54:54.55 0.3 undecidable manual P 65 85.0482 50 0.1 65
IV.ATLO.EHE. 2020-05-25T04:54:53.45 0.3 undecidable manual P 28 78.8655 50 -0.05 66
IV.MURB.HHZ. 2020-05-25T04:54:53.74 0.6 undecidable manual P 36 78.9654 50 0.22 43
TV.SF01.EHZ. 2020-05-25T04:54:51.76 0.6 undecidable manual S 294 34.743 50 0.04 48
IV.ATTE.HHZ. 2020-05-25T04:54:51.55 0.1 negative manual P 30 65.3901 50 0.12 89
TV.SF11.HHE. 2020-05-25T04:54:50.17 0.6 undecidable manual S 312 30.1476 50 -0.33 46
TV.SF13.HHE. 2020-05-25T04:54:50.60 0.6 undecidable manual S 298 30.9468 50 -0.1 48
TV.SF14.HHE. 2020-05-25T04:54:50.07 0.3 undecidable manual S 286 28.6491 50 -0.03 73
IV.MOMA.HHZ. 2020-05-25T04:54:49.20 0.3 undecidable manual P 75 51.9036 50 -0.14 68
TV.SF03.EHZ. 2020-05-25T04:54:49.00 0.3 undecidable manual S 301 25.3524 50 -0.22 71
TV.SF04.EHZ. 2020-05-25T04:54:49.87 0.6 undecidable manual S 305 29.0487 50 -0.34 46
IV.MGAB.HHZ. 2020-05-25T04:54:49.56 0.3 undecidable manual S 27 28.2495 50 -0.43 67
IV.MCIV.CHZ. 2020-05-25T04:54:49.47 0.6 undecidable manual S 295 24.753 50 0.4 45
IV.BARO.EHZ. 2020-05-25T04:54:48.44 0.3 undecidable manual P 171 49.3173 50 -0.5 64
IV.ARCI.HHZ. 2020-05-25T04:54:48.52 0.3 undecidable manual P 295 43.0236 50 0.54 64
IV.SACS.HHZ. 2020-05-25T04:54:47.13 0.3 undecidable manual S 349 18.3705 119 -0.05 74
TV.SF01.EHZ. 2020-05-25T04:54:47.04 0.3 undecidable manual P 294 34.743 50 0.34 68
IV.LATE.HHZ. 2020-05-25T04:54:46.20 0.3 undecidable manual S 237 14.5743 125 0.14 73
TV.SF13.HHE. 2020-05-25T04:54:46.03 0.1 positive manual P 298 30.9468 50 -0.08 96
TV.SF03.EHZ. 2020-05-25T04:54:45.14 0.1 undecidable manual P 301 25.3524 50 -0.12 96
TV.SF11.HHE. 2020-05-25T04:54:45.97 0.3 undecidable manual P 312 30.1476 50 -0.02 73
TV.SF04.EHZ. 2020-05-25T04:54:45.66 0.1 undecidable manual P 305 29.0487 50 -0.17 95
TV.SF14.HHE. 2020-05-25T04:54:45.62 0.1 undecidable manual P 286 28.6491 50 -0.15 95
IV.MGAB.HHZ. 2020-05-25T04:54:45.00 0.1 positive manual P 27 28.2495 50 -0.7 82
IV.MCIV.CHZ. 2020-05-25T04:54:44.89 0.6 undecidable manual P 295 24.753 50 -0.28 47
IV.SACS.HHZ. 2020-05-25T04:54:43.81 0.1 positive manual P 349 18.3705 119 -0.26 94
IV.LATE.HHZ. 2020-05-25T04:54:43.42 0.1 positive manual P 237 14.5743 125 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LATE.HHN. ML:2.2 0.0016580605 0.1792 AML other m 2020-05-25T04:54:49.13
IV.LATE.HHE. ML:2.1 0.0012129835 0.32 AML other m 2020-05-25T04:54:47.50
IV.SACS.HHE. ML:2.4 0.002070675 0.24 AML other m 2020-05-25T04:54:47.48
IV.SACS.HNN. ML:2.1 0.0011175895 0.2592 AML other m 2020-05-25T04:54:47.88
IV.SACS.HHN. ML:2.1 0.0011396120000000001 0.2592 AML other m 2020-05-25T04:54:47.88
IV.SACS.HNE. ML:2.4 0.002085 0.24 AML other m 2020-05-25T04:54:47.48
IV.MCIV.CHN. ML:1.7 0.00028949785 0.1024 AML other m 2020-05-25T04:54:50.38
IV.MGAB.HHN. ML:2.0 0.00058295455 0.1408 AML other m 2020-05-25T04:54:51.65
IV.MGAB.HHE. ML:2.0 0.00047722525 0.2592 AML other m 2020-05-25T04:54:50.52
IV.MGAB.HNE. ML:2.0 0.0005042927 0.2624 AML other m 2020-05-25T04:54:50.52
IV.MGAB.HNN. ML:2.0 0.00051670915 0.16 AML other m 2020-05-25T04:54:51.72
TV.SF04.EHE. ML:1.9 0.00041371015 0.24 AML other m 2020-05-25T04:54:53.00
TV.SF04.EHN. ML:2.1 0.00065008215 0.3008 AML other m 2020-05-25T04:54:52.36
TV.SF01.EHE. ML:1.8 0.00024716035 0.2784 AML other m 2020-05-25T04:54:53.16
TV.SF01.EHN. ML:1.9 0.0002936429 0.2208 AML other m 2020-05-25T04:54:54.51
IV.BARO.EHE. ML:1.7 0.00014537235 0.4 AML other m 2020-05-25T04:54:57.33
IV.BARO.HNE. ML:1.8 0.00016962892 0.4192 AML other m 2020-05-25T04:54:57.33
IV.BARO.HNN. ML:1.9 0.0001986368 0.4608 AML other m 2020-05-25T04:54:57.19
IV.BARO.EHN. ML:1.8 0.00017142205 0.4224 AML other m 2020-05-25T04:54:57.40
IV.ARCI.HHN. ML:1.5 0.00009689114 0.16 AML other m 2020-05-25T04:54:56.43
IV.ARCI.HHE. ML:1.5 0.0000936755 0.1984 AML other m 2020-05-25T04:54:56.53
IV.MOMA.HNN. ML:2.0 0.0002388878 0.4576 AML other m 2020-05-25T04:54:59.89
IV.MOMA.HNE. ML:1.9 0.00018104485 0.2784 AML other m 2020-05-25T04:55:00.98
IV.MOMA.HHE. ML:1.8 0.00016033365 0.2592 AML other m 2020-05-25T04:54:57.43
IV.MOMA.HHN. ML:1.8 0.00017300684999999998 0.24 AML other m 2020-05-25T04:54:58.29
IV.ASSB.HHN. ML:1.8 0.000101210575 0.2784 AML other m 2020-05-25T04:55:06.08
IV.ASSB.HHE. ML:1.9 0.0001355697 0.4576 AML other m 2020-05-25T04:55:04.63
IV.ATTE.HHE. ML:1.8 0.00011467158000000001 0.56 AML other m 2020-05-25T04:55:06.87
IV.ATTE.HHN. ML:1.9 0.00014371454 0.2816 AML other m 2020-05-25T04:55:04.78
IV.ATCC.EHN. ML:2.1 0.0001631441 0.5216 AML other m 2020-05-25T04:55:07.80
IV.ATCC.EHE. ML:2.1 0.00017019275 0.1376 AML other m 2020-05-25T04:54:54.95
IV.MURB.HNE. ML:2.6 0.0005296305 0.3584 AML other m 2020-05-25T04:55:09.43
IV.MURB.HHN. ML:2.7 0.00067727295 0.32 AML other m 2020-05-25T04:55:10.62
IV.MURB.HNN. ML:2.7 0.00068442685 0.3616 AML other m 2020-05-25T04:55:10.64
IV.MURB.HHE. ML:2.6 0.0006211238500000001 0.2592 AML other m 2020-05-25T04:55:07.46
IV.CESI.HHE. ML:1.8 0.00008760345499999999 0.2976 AML other m 2020-05-25T04:55:09.99
IV.CESI.HHN. ML:1.8 0.000076583845 0.3008 AML other m 2020-05-25T04:55:10.10
IV.ATVO.HHN. ML:1.9 0.00008979532000000001 0.4992 AML other m 2020-05-25T04:55:12.51
IV.ATVO.HHE. ML:2.0 0.0001257839 0.3808 AML other m 2020-05-25T04:55:08.34
IV.SNTG.HHN. ML:1.7 0.000049070605000000004 0.5216 AML other m 2020-05-25T04:55:13.33
IV.SNTG.HHE. ML:1.5 0.000028662485 0.5184 AML other m 2020-05-25T04:55:12.65
IV.ATFO.HHE. ML:2.0 0.0001054452 0.5184 AML other m 2020-05-25T04:55:10.71
IV.ATFO.HHN. ML:2.1 0.00014460044999999998 0.4032 AML other m 2020-05-25T04:55:10.17
IV.SSFR.HHN. ML:1.9 0.000066907675 0.2208 AML other m 2020-05-25T04:55:14.98
IV.SSFR.HHE. ML:1.9 0.000072757855 0.24 AML other m 2020-05-25T04:55:15.06
IV.FDMO.HHN. ML:1.7 0.000043108255 0.5024 AML other m 2020-05-25T04:55:12.47
IV.FDMO.HHE. ML:1.8 0.000056891899999999996 0.32 AML other m 2020-05-25T04:55:13.59
IV.PARC.HHE. ML:1.7 0.000039152085000000006 0.4224 AML other m 2020-05-25T04:55:16.26
IV.PARC.HHN. ML:1.7 0.00003981847 0.3808 AML other m 2020-05-25T04:55:21.17
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