Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 15-05-2020 and time 16:40:32 (Italy) in region 3 km SW Castel Giorgio (TR)

A magnitude ML 2.1 earthquake occured in region: 3 km SW Castel Giorgio (TR), on

  • 15-05-2020 14:40:32 (UTC)
  • 15-05-2020 16:40:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6840, 11.9570 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 12 995 21688
Porano TR 12 1966 23654
Latera VT 12 836 24490
Orvieto TR 13 20630 45120
Proceno VT 13 557 45677
Bagnoregio VT 13 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 17 13432 73560
Ficulle TR 19 1669 75229
Celleno VT 20 1355 76584
Sorano GR 20 3428 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 2.1 2020-05-15
14:40:32		 42.6843 11.9568 11 2020-11-19
12:36:58		 Bollettino Sismico Italiano INGV 82212431
Reviewed
Rev100 		ML 2.0 2020-05-15
14:40:32		 42.6903 11.9533 10 2020-05-15
14:54:18		 Sala Sismica INGV-Roma 79160571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-15 14:40:32 ± 0.09
Latitude 42.6843 ± 0.0045
Longitude 11.9568 ± 0.0049
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 82212431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 464
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 188
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 32
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.71226
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 79160571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-15 14:54:18

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 21
Type of magnitude ML
Reference to an origin 82212431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-20 15:00:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SBPO.HNZ. 2020-05-15T14:41:13.02 3.0 undecidable manual P -0.22 0
IV.MOMA.HNZ. 2020-05-15T14:40:48.66 0.6 undecidable manual S 75 51.7038 50 0.04 47
IV.ARCI.HNZ. 2020-05-15T14:40:47.25 0.6 undecidable manual S 296 43.4232 50 0.85 37
IV.BARO.HNZ. 2020-05-15T14:40:47.80 0.6 undecidable manual S 171 49.0176 50 -0.11 46
IV.MURB.HNZ. 2020-05-15T14:40:46.70 0.3 undecidable manual P 35 79.0653 50 0.79 54
IV.ATTE.HHZ. 2020-05-15T14:40:44.15 0.3 undecidable manual P 29 65.49 50 0.33 64
IV.TOLF.HHZ. 2020-05-15T14:40:44.22 0.6 undecidable manual P 177 68.8755 50 -0.13 44
IV.ARRO.EHZ. 2020-05-15T14:40:44.50 0.6 undecidable manual P 100 67.0773 50 0.44 42
TV.SF01.EHZ. 2020-05-15T14:40:44.51 0.6 undecidable manual S 294 35.0427 50 0.34 45
TV.SF11.HHN. 2020-05-15T14:40:43.14 0.3 undecidable manual S 312 30.4473 50 0.18 71
TV.SF13.HHZ. 2020-05-15T14:40:43.06 0.3 undecidable manual S 299 31.2465 50 -0.1 72
IV.MGAB.HHZ. 2020-05-15T14:40:42.25 0.3 undecidable manual S 26 28.3494 50 -0.13 72
IV.CESX.HHE. 2020-05-15T14:40:42.32 0.6 undecidable manual P 99 52.1034 50 0.56 41
TV.SF04.EHZ. 2020-05-15T14:40:42.13 0.6 undecidable manual S 305 29.4483 50 -0.54 43
TV.SF14.HHN. 2020-05-15T14:40:42.59 0.3 undecidable manual S 286 28.9488 50 0.04 73
IV.MCIV.CHZ. 2020-05-15T14:40:41.49 0.3 undecidable manual S 295 25.1526 50 -0.04 73
IT.GNU.HGE. 2020-05-15T14:40:41.54 0.6 undecidable manual P 75 51.7038 50 -0.16 46
TV.SF03.EHE. 2020-05-15T14:40:41.40 0.3 undecidable manual S 301 25.6521 50 -0.29 70
IV.MOMA.HNZ. 2020-05-15T14:40:41.43 0.6 undecidable manual P 75 51.7038 50 -0.26 45
IV.ARCI.HNZ. 2020-05-15T14:40:40.94 0.3 undecidable manual P 296 43.4232 50 0.53 64
IV.BARO.HNZ. 2020-05-15T14:40:40.78 0.3 undecidable manual P 171 49.0176 50 -0.5 64
TV.SF01.EHZ. 2020-05-15T14:40:39.40 0.3 undecidable manual P 294 35.0427 50 0.27 69
IV.SACS.HHZ. 2020-05-15T14:40:39.62 0.3 undecidable manual S 348 18.6702 119 -0.04 74
IV.LATE.HHZ. 2020-05-15T14:40:38.84 0.6 undecidable manual S 238 14.6742 125 0.34 47
TV.SF13.HHZ. 2020-05-15T14:40:38.42 0.3 undecidable manual P 299 31.2465 50 -0.12 71
TV.SF11.HHN. 2020-05-15T14:40:38.38 0.3 undecidable manual P 312 30.4473 50 -0.05 73
TV.SF04.EHZ. 2020-05-15T14:40:38.18 0.3 undecidable manual P 305 29.4483 50 -0.08 72
TV.SF14.HHN. 2020-05-15T14:40:37.99 0.1 positive manual P 286 28.9488 50 -0.2 94
TV.SF03.EHE. 2020-05-15T14:40:37.53 0.1 undecidable manual P 301 25.6521 50 -0.16 95
IV.MCIV.CHZ. 2020-05-15T14:40:37.55 0.3 undecidable manual P 295 25.1526 50 -0.05 73
IV.MGAB.HHZ. 2020-05-15T14:40:37.70 0.1 negative manual P 26 28.3494 50 -0.39 90
IV.SACS.HHZ. 2020-05-15T14:40:36.32 0.1 positive manual P 348 18.6702 119 -0.2 96
IV.LATE.HHZ. 2020-05-15T14:40:35.83 0.1 positive manual P 238 14.6742 125 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SACS.HHN. ML:2.3 0.00149 1.06 AML other m 2020-05-15T14:40:39.83
IV.LATE.HHE. ML:2.1 0.00113 0.82 AML other m 2020-05-15T14:40:39.93
IV.SACS.HHE. ML:2.3 0.001435 1.4 AML other m 2020-05-15T14:40:39.29
IV.SACS.HNE. ML:2.3 0.00146 1.4 AML other m 2020-05-15T14:40:39.29
IV.MCIV.CHE. ML:1.8 0.0003505 0.28 AML other m 2020-05-15T14:40:42.32
IV.MCIV.CHN. ML:1.6 0.000237 0.8 AML other m 2020-05-15T14:40:42.50
IV.MGAB.HNE. ML:2.2 0.000794 0.76 AML other m 2020-05-15T14:40:43.00
TV.SF04.EHE. ML:2.0 0.0005655 0.18 AML other m 2020-05-15T14:40:43.20
IV.LATE.HHN. ML:2.3 0.0019199999999999998 0.6 AML other m 2020-05-15T14:40:43.50
IV.MGAB.HNN. ML:2.1 0.0006395 0.6 AML other m 2020-05-15T14:40:43.38
IV.MGAB.HHN. ML:2.2 0.0008169999999999999 0.74 AML other m 2020-05-15T14:40:43.38
TV.SF04.EHN. ML:2.1 0.0006910000000000001 0.94 AML other m 2020-05-15T14:40:43.10
IV.MGAB.HHE. ML:2.1 0.000697 0.3 AML other m 2020-05-15T14:40:44.30
TV.SF01.EHN. ML:1.8 0.000264 0.42 AML other m 2020-05-15T14:40:44.92
TV.SF01.EHE. ML:1.9 0.0003375 0.56 AML other m 2020-05-15T14:40:48.45
IV.ATTE.HHN. ML:1.9 0.0001585 1.12 AML other m 2020-05-15T14:40:55.28
IV.ATTE.HHE. ML:1.9 0.000136 0.3 AML other m 2020-05-15T14:40:57.14
IV.ARRO.EHN. ML:1.7 0.00009604999999999999 0.26 AML other m 2020-05-15T14:40:58.46
IV.ARRO.EHE. ML:1.6 0.00007635 0.78 AML other m 2020-05-15T14:40:58.35
IV.MURB.HHE. ML:2.4 0.000363 0.78 AML other m 2020-05-15T14:41:00.58
IV.MURB.HHN. ML:2.5 0.00047 0.28 AML other m 2020-05-15T14:41:01.07
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