Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 07-02-2020 and time 23:34:34 (Italy) in region 7 km SW Todi (PG)

A magnitude ML 1.6 earthquake occured in region: 7 km SW Todi (PG), on

  • 07-02-2020 22:34:34 (UTC)
  • 07-02-2020 23:34:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7330, 12.3500 at 8 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
Todi PG 7 16851 16851
Montecchio TR 9 1676 18527
Avigliano Umbro TR 11 2558 21085
Monte Castello di Vibio PG 12 1567 22652
Guardea TR 13 1836 24488
Baschi TR 13 2722 27210
Fratta Todina PG 14 1839 29049
Montecastrilli TR 15 5022 34071
Massa Martana PG 15 3770 37841
Castiglione in Teverina VT 15 2329 40170
Alviano TR 17 1463 41633
San Venanzo TR 17 2218 43851
Acquasparta TR 17 4778 48629
Lugnano in Teverina TR 18 1494 50123
Civitella d'Agliano VT 19 1640 51763
Collazzone PG 20 3473 55236
Orvieto TR 20 20630 75866
Amelia TR 20 11897 87763
Marsciano PG 20 18902 106665

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Terni (111501 inhabitants)
38 Km SW of Foligno (57155 inhabitants)
40 Km NE of Viterbo (67173 inhabitants)
42 Km S of Perugia (166134 inhabitants)
85 Km NE of Civitavecchia (52991 inhabitants)
87 Km NW of Guidonia Montecelio (88673 inhabitants)
90 Km SE of Arezzo (99543 inhabitants)
93 Km NW of Tivoli (56533 inhabitants)
94 Km N of Roma (2864731 inhabitants)
96 Km W of L'Aquila (69753 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 1.6 2020-02-07
22:34:34		 42.7327 12.3498 8 2020-07-18
21:08:24		 Bollettino Sismico Italiano INGV 77076691
Reviewed
Rev100 		ML 1.6 2020-02-07
22:34:34		 42.7345 12.3527 8 2020-02-07
22:49:11		 Sala Sismica INGV-Roma 76327481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-07 22:34:34 ± 0.07
Latitude 42.7327 ± 0.0036
Longitude 12.3498 ± 0.0037
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77076691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 322
Semi-minor axis of confidence ellipse (meter) 288
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 187
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) 49
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
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) 0.17627
Epicentral distance of station farthest from the epicenter (degree) 0.61963
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 77076691
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-06 15:12:29

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 27
Type of magnitude ML
Reference to an origin 76327481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-07 22:49:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHZ. 2020-02-07T22:34:54.25 0.6 undecidable manual S 13 60.495 50 0.56 42
IV.NRCA.HHZ. 2020-02-07T22:34:54.45 0.6 undecidable manual S 80 63.1923 50 0.03 48
IV.BARO.HNE. 2020-02-07T22:34:53.77 0.6 undecidable manual S 205 59.0964 50 0.47 44
IV.SRES.HHZ. 2020-02-07T22:34:52.90 0.6 undecidable manual S 167 56.499 50 0.27 46
IV.ATCC.EHZ. 2020-02-07T22:34:52.42 1.0 undecidable manual S 25 55.4001 50 0.08 24
IV.MCIV.CHN. 2020-02-07T22:34:52.42 0.6 undecidable manual S 276 55.1004 50 0.18 47
TV.SF04.EHZ. 2020-02-07T22:34:52.37 0.6 undecidable manual S 282 57.2982 50 -0.46 44
IV.ATTE.HHZ. 2020-02-07T22:34:51.31 0.6 undecidable manual S 0 51.6039 50 -0.01 49
IV.GAVE.EHZ. 2020-02-07T22:34:48.74 0.6 undecidable manual S 96 44.622 50 -0.7 41
IV.SACS.HHZ. 2020-02-07T22:34:47.67 0.6 undecidable manual S 290 38.1285 50 -0.04 50
IV.ARRO.EHZ. 2020-02-07T22:34:47.73 0.6 undecidable manual S 117 37.9287 50 0.05 50
IV.ATMI.HHZ. 2020-02-07T22:34:47.08 0.3 undecidable manual P 354 67.0773 50 0.52 64
IV.MURB.HHZ. 2020-02-07T22:34:46.03 0.6 undecidable manual P 13 60.495 50 0.48 43
IV.FDMO.HHZ. 2020-02-07T22:34:46.95 0.3 undecidable manual P 60 68.7756 50 0.13 69
IV.NRCA.HHZ. 2020-02-07T22:34:45.81 0.3 undecidable manual P 80 63.1923 50 -0.16 70
IV.BARO.HNE. 2020-02-07T22:34:45.20 0.6 undecidable manual P 205 59.0964 50 -0.12 47
IV.MCIV.CHN. 2020-02-07T22:34:44.84 0.3 undecidable manual P 276 55.1004 50 0.13 71
TV.SF03.EHE. 2020-02-07T22:34:44.39 1.0 undecidable manual P 278 54.6009 50 -0.25 23
TV.SF04.EHZ. 2020-02-07T22:34:44.88 0.3 undecidable manual P 282 57.2982 50 -0.17 70
IV.SRES.HHZ. 2020-02-07T22:34:44.97 0.3 undecidable manual P 167 56.499 50 0.04 72
IV.ATCC.EHZ. 2020-02-07T22:34:44.55 0.6 undecidable manual P 25 55.4001 50 -0.22 46
IV.MGAB.HHZ. 2020-02-07T22:34:44.51 0.3 undecidable manual S 316 27.75 106 0.04 76
IV.LATE.HHZ. 2020-02-07T22:34:43.64 0.3 undecidable manual P 254 46.4202 50 0.26 70
IV.ATTE.HHZ. 2020-02-07T22:34:43.70 0.1 undecidable manual P 0 51.6039 50 -0.47 88
IV.GAVE.EHZ. 2020-02-07T22:34:42.94 0.3 undecidable manual P 96 44.622 50 -0.16 72
IV.CESX.HHZ. 2020-02-07T22:34:42.83 0.3 undecidable manual S 125 23.754 109 -0.29 73
IV.ARRO.EHZ. 2020-02-07T22:34:42.05 0.1 undecidable manual P 117 37.9287 50 -0.03 100
IV.MOMA.HHZ. 2020-02-07T22:34:41.81 0.6 undecidable manual S 66 19.5693 112 0.03 51
IT.GNU.HGZ. 2020-02-07T22:34:41.66 0.6 undecidable manual S 66 19.5693 112 -0.13 50
IV.SACS.HHZ. 2020-02-07T22:34:41.88 0.1 undecidable manual P 290 38.1285 50 -0.21 96
IV.MGAB.HHZ. 2020-02-07T22:34:40.02 0.1 negative manual P 316 27.75 106 -0.2 98
IV.CESX.HHZ. 2020-02-07T22:34:39.58 0.1 undecidable manual P 125 23.754 109 0.13 100
IT.GNU.HGZ. 2020-02-07T22:34:39.16 0.6 undecidable manual P 66 19.5693 112 0.48 47
IV.MOMA.HHZ. 2020-02-07T22:34:38.95 0.3 undecidable manual P 66 19.5693 112 0.28 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:1.6 0.0001522472 0.2816 AML other m 2020-02-07T22:34:49.16
IV.SACS.HHN. ML:1.3 0.00006984 0.4224 AML other m 2020-02-07T22:34:49.39
IV.SACS.HHE. ML:1.3 0.00008011821499999999 0.2048 AML other m 2020-02-07T22:34:49.88
IV.GAVE.EHE. ML:1.6 0.00013732274999999998 0.2304 AML other m 2020-02-07T22:34:51.22
IV.LATE.HHE. ML:1.4 0.000070335575 0.1664 AML other m 2020-02-07T22:34:53.75
IV.ATTE.HHE. ML:1.6 0.000089119105 1.68 AML other m 2020-02-07T22:34:54.04
TV.SF04.EHE. ML:1.5 0.000067686545 0.2048 AML other m 2020-02-07T22:34:54.39
IV.ATTE.HHN. ML:1.7 0.00012204345 0.3072 AML other m 2020-02-07T22:34:54.50
TV.SF04.EHN. ML:1.5 0.000068767885 0.192 AML other m 2020-02-07T22:34:55.14
IV.NRCA.HHN. ML:1.4 0.00004503224 0.1536 AML other m 2020-02-07T22:34:55.75
IV.MURB.HHN. ML:2.1 0.0002805464 0.256 AML other m 2020-02-07T22:34:56.34
IV.MURB.HHE. ML:2.3 0.00039592085 0.3072 AML other m 2020-02-07T22:34:56.99
IV.MURB.HNE. ML:2.2 0.00036157035000000003 0.2944 AML other m 2020-02-07T22:34:56.99
IV.NRCA.HHE. ML:1.6 0.00007663942 0.128 AML other m 2020-02-07T22:34:57.12
IV.PARC.HHE. ML:1.5 0.000029786514999999998 1.616 AML other m 2020-02-07T22:35:07.10
IV.PARC.HHN. ML:1.6 0.000034987895 0.4608 AML other m 2020-02-07T22:35:07.45
IV.MOMA.HNE. ML:1.7 0.00041408765000000005 0.3584 AML other m 2020-02-07T22:34:42.82
IV.MOMA.HHE. ML:1.6 0.00035314080000000005 0.3584 AML other m 2020-02-07T22:34:42.13
IV.MOMA.HNN. ML:1.7 0.00035856935 0.2816 AML other m 2020-02-07T22:34:43.08
IV.MOMA.HHN. ML:1.7 0.00036081735000000005 0.2688 AML other m 2020-02-07T22:34:43.07
IV.CESX.HHN. ML:1.4 0.00015435470000000001 0.3584 AML other m 2020-02-07T22:34:44.08
IV.CESX.HHE. ML:1.2 0.0001166347 0.1792 AML other m 2020-02-07T22:34:44.29
IV.MGAB.HNN. ML:2.0 0.0006439595499999999 0.32 AML other m 2020-02-07T22:34:45.61
IV.MGAB.HHE. ML:2.1 0.0007878318 0.2304 AML other m 2020-02-07T22:34:45.74
IV.MGAB.HNE. ML:2.1 0.0006875938500000001 0.2432 AML other m 2020-02-07T22:34:45.73
IV.MGAB.HHN. ML:2.1 0.00069477205 0.192 AML other m 2020-02-07T22:34:45.61
IV.ARRO.EHN. ML:1.4 0.00010203453 0.192 AML other m 2020-02-07T22:34:50.17
IV.LATE.HHN. ML:1.8 0.00017214324999999999 0.2816 AML other m 2020-02-07T22:34:55.01
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