Earthquake with magnitude of ML 0.9 on date 22-05-2020 and time 21:55:21 (Italy) in region 2 km SW Castel Giorgio (TR)

A magnitude ML 0.9 earthquake occured in region: 2 km SW Castel Giorgio (TR), on

  • 22-05-2020 19:55:21 (UTC)
  • 22-05-2020 21:55:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.69, 11.96 at 11 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.

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 5 2091 4222
Bolsena VT 5 3991 8213
Grotte di Castro VT 8 2683 10896
Castel Viscardo TR 8 2938 13834
Acquapendente VT 10 5506 19340
Gradoli VT 10 1353 20693
Porano TR 11 1966 22659
Onano VT 12 995 23654
Orvieto TR 12 20630 44284
Latera VT 13 836 45120
Bagnoregio VT 13 3650 48770
Proceno VT 13 557 49327
Lubriano VT 13 909 50236
Allerona TR 14 1794 52030
Capodimonte VT 16 1731 53761
Marta VT 17 3499 57260
Montefiascone VT 18 13432 70692
Valentano VT 18 2868 73560
Ficulle TR 18 1669 75229
Celleno VT 20 1355 76584
Fabro TR 20 2876 79460

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of Viterbo (67173 inhabitants)
58 Km W of Terni (111501 inhabitants)
58 Km SW of Perugia (166134 inhabitants)
67 Km W of Foligno (57155 inhabitants)
68 Km N of Civitavecchia (52991 inhabitants)
70 Km E of Grosseto (82087 inhabitants)
87 Km S of Arezzo (99543 inhabitants)
87 Km SE of Siena (53903 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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.9 2020-05-22
19:55:21
42.69 11.96 11 2020-05-22
20:09:21
Sala Sismica INGV-Roma 79461381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-22 19:55:21 ± 0.1
Latitude 42.69 ± 0.00
Longitude 11.96 ± 0.01
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79461381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 530
Semi-minor axis of confidence ellipse (meter) 383
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 278
Circular confidence region, given by single value of horizontal uncertainty (meter) 530
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.44696
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 79461381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-22 20:09:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
ST.OZOL.EHZ. 2020-05-22T19:57:09.83 3.0 undecidable manual Sg 4.68 0
IV.MTMR.EHZ. 2020-05-22T19:56:41.20 3.0 undecidable manual Sn -1.27 0
IV.NDIM.HHZ. 2020-05-22T19:56:30.88 3.0 undecidable manual Sg 0.74 0
IV.FIR.HHZ. 2020-05-22T19:56:02.20 3.0 undecidable manual S -0.58 0
IV.RUFI.EHZ. 2020-05-22T19:56:00.23 3.0 undecidable manual S -2.17 0
IV.BARO.HNZ. 2020-05-22T19:55:37.01 0.6 undecidable manual S 172 0.447 50 0.18 45
IV.ARCI.HNZ. 2020-05-22T19:55:35.41 0.6 undecidable manual S 294 0.393 50 0.17 46
IV.SRES.HHZ. 2020-05-22T19:55:33.19 3.0 negative manual P -0.28 0
TV.SF01.EHZ. 2020-05-22T19:55:33.25 0.3 undecidable manual S 293 0.3184 50 0.23 69
TV.SF11.HHE. 2020-05-22T19:55:32.11 0.3 undecidable manual S 311 0.2743 50 0.38 68
IV.MGAB.HHZ. 2020-05-22T19:55:31.28 0.3 undecidable manual S 26 0.2473 50 0.37 68
TV.SF04.EHZ. 2020-05-22T19:55:31.23 0.1 undecidable manual S 303 0.2662 50 -0.24 93
TV.SF13.HHE. 2020-05-22T19:55:31.63 0.3 undecidable manual S 297 0.2833 50 -0.35 68
IV.ARCI.HNZ. 2020-05-22T19:55:29.49 0.6 undecidable manual P 294 0.393 50 0.25 45
IV.BARO.HNZ. 2020-05-22T19:55:29.95 0.3 undecidable manual P 172 0.447 50 -0.2 68
IV.SACS.HHZ. 2020-05-22T19:55:28.40 0.3 undecidable manual S 346 0.1637 121 0.04 74
TV.SF01.EHZ. 2020-05-22T19:55:27.75 0.3 undecidable manual P 293 0.3184 50 -0.21 70
IV.SF14.HHZ. 2020-05-22T19:55:27.84 3.0 undecidable manual P 0
IV.LATE.HHZ. 2020-05-22T19:55:27.60 0.1 undecidable manual S 237 0.1403 124 -0.01 100
TV.SF04.EHZ. 2020-05-22T19:55:27.20 0.6 undecidable manual P 303 0.2662 50 0.14 47
TV.SF13.HHE. 2020-05-22T19:55:27.34 0.3 undecidable manual P 297 0.2833 50 -0.02 73
TV.SF11.HHE. 2020-05-22T19:55:26.93 0.3 undecidable manual P 311 0.2743 50 -0.28 69
IV.MCIV.CHE. 2020-05-22T19:55:26.79 1.0 undecidable manual P 293 0.2284 50 0.36 23
IV.MGAB.HHZ. 2020-05-22T19:55:26.49 0.1 undecidable manual P 26 0.2473 50 -0.25 93
TV.SF03.EHZ. 2020-05-22T19:55:26.45 0.1 undecidable manual P 299 0.2329 50 -0.05 97
IV.SACS.HHZ. 2020-05-22T19:55:25.11 0.6 positive manual P 346 0.1637 121 -0.16 48
IV.LATE.HHZ. 2020-05-22T19:55:25.10 0.3 undecidable manual P 237 0.1403 124 0.27 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LATE.HHN. ML:1.2 0.0001275283 0.1024 AML other m 2020-05-22T19:55:29.16
IV.LATE.HHE. ML:1 9.657683E-5 0.2816 AML other m 2020-05-22T19:55:31.03
IV.SACS.HHE. ML:1 8.0420235E-5 0.2432 AML other m 2020-05-22T19:55:29.35
IV.SACS.HHN. ML:0.6 3.2299215E-5 0.4864 AML other m 2020-05-22T19:55:31.37
IV.MGAB.HNE. ML:1 5.539336E-5 0.3968 AML other m 2020-05-22T19:55:33.11
IV.MGAB.HHE. ML:0.8 3.3126785E-5 0.2944 AML other m 2020-05-22T19:55:34.76
IV.MGAB.HHN. ML:0.9 4.34253E-5 0.3968 AML other m 2020-05-22T19:55:35.04
TV.SF04.EHE. ML:0.9 4.0220436E-5 0.1792 AML other m 2020-05-22T19:55:32.53
TV.SF04.EHN. ML:1 4.5759145E-5 0.1664 AML other m 2020-05-22T19:55:32.28
TV.SF01.EHE. ML:0.8 2.47383E-5 0.2944 AML other m 2020-05-22T19:55:35.48
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download