Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 24-08-2020 and time 00:13:40 (Italy) in region 7 km W Giano dell'Umbria (PG)

A magnitude ML 1.6 earthquake occured in region: 7 km W Giano dell'Umbria (PG), on

  • 23-08-2020 22:13:40 (UTC)
  • 24-08-2020 00:13:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8380, 12.4950 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
Giano dell'Umbria PG 7 3846 3846
Massa Martana PG 7 3770 7616
Collazzone PG 8 3473 11089
Todi PG 9 16851 27940
Gualdo Cattaneo PG 10 6155 34095
Fratta Todina PG 11 1839 35934
Monte Castello di Vibio PG 12 1567 37501
Bevagna PG 14 5081 42582
Montefalco PG 14 5679 48261
Castel Ritaldi PG 15 3278 51539
Marsciano PG 15 18902 70441
Acquasparta TR 17 4778 75219
Deruta PG 17 9669 84888
San Venanzo TR 19 2218 87106
Cannara PG 19 4305 91411
Bettona PG 20 4367 95778

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SW of Foligno (57155 inhabitants)
31 Km S of Perugia (166134 inhabitants)
33 Km NW of Terni (111501 inhabitants)
57 Km NE of Viterbo (67173 inhabitants)
86 Km SE of Arezzo (99543 inhabitants)
92 Km NW of L'Aquila (69753 inhabitants)
95 Km N of Guidonia Montecelio (88673 inhabitants)
100 Km N of Tivoli (56533 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 2020-08-23
22:13:40		 42.838 12.4952 8 2020-11-19
12:37:02		 Bollettino Sismico Italiano INGV 83002811
Reviewed
Rev100 		ML 1.5 2020-08-23
22:13:40		 42.8387 12.5013 7 2020-08-23
22:21:26		 Sala Sismica INGV-Roma 82274121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-23 22:13:40 ± 0.06
Latitude 42.8380 ± 0.0027
Longitude 12.4952 ± 0.0049
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83002811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 377
Semi-minor axis of confidence ellipse (meter) 230
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 243
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.66100
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 38
Type of magnitude ML
Reference to an origin 83002811
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-12 11:48:58

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 82274121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-23 22:21:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ROSPO.HHZ. 2020-08-23T22:14:41.15 3.0 undecidable manual Sg 1.33 0
IV.ROSPO.HHZ. 2020-08-23T22:14:16.98 3.0 undecidable manual Pg 3.36 0
IV.RNI2.HHZ. 2020-08-23T22:14:10.70 3.0 undecidable manual Pn 0.01 0
IV.SRES.HHZ. 2020-08-23T22:14:02.83 3.0 undecidable manual S -1.75 0
IV.MMO1.EHZ. 2020-08-23T22:14:01.65 0.6 undecidable manual S 84 67.9764 50 0.39 42
IV.ATMI.HHZ. 2020-08-23T22:13:58.51 0.6 undecidable manual S 342 57.9975 50 -0.1 45
IV.FDMO.HHZ. 2020-08-23T22:13:57.65 0.6 undecidable manual S 65 52.9026 50 0.42 43
IV.NRCA.HHZ. 2020-08-23T22:13:56.83 0.6 undecidable manual S 90 50.4162 50 0.27 44
IV.MURB.HHZ. 2020-08-23T22:13:55.79 0.6 undecidable manual S 3 47.2194 50 0.08 46
IV.EL6.EHZ. 2020-08-23T22:13:53.13 0.3 undecidable manual P 42 73.371 50 0 67
IV.ATCC.EHZ. 2020-08-23T22:13:53.56 0.6 undecidable manual S 17 40.2264 50 -0.3 45
IV.GAVE.EHZ. 2020-08-23T22:13:52.95 0.6 undecidable manual S 116 36.3414 50 0.15 46
IV.MMO1.EHZ. 2020-08-23T22:13:52.32 0.3 undecidable manual P 84 67.9764 50 0.03 67
IV.CAFI.HHZ. 2020-08-23T22:13:52.55 0.3 undecidable manual P 322 69.2751 50 0.04 67
IV.ARRO.EHZ. 2020-08-23T22:13:52.64 0.6 undecidable manual S 142 36.2415 50 -0.14 46
IV.ATMI.HHZ. 2020-08-23T22:13:50.79 0.3 undecidable manual P 342 57.9975 50 0.02 69
IV.ASSB.HHZ. 2020-08-23T22:13:49.47 0.6 undecidable manual S 30 26.2515 108 -0.16 47
IV.MURB.HHZ. 2020-08-23T22:13:49.12 0.3 undecidable manual P 3 47.2194 50 0.02 70
IV.CESX.HHZ. 2020-08-23T22:13:49.89 0.6 undecidable manual S 164 26.5512 107 0.18 47
IV.NRCA.HHZ. 2020-08-23T22:13:49.38 0.1 undecidable manual P 90 50.4162 50 -0.2 89
IV.SACS.HHE. 2020-08-23T22:13:49.56 0.3 undecidable manual P 272 47.619 50 0.4 65
IV.FDMO.HHZ. 2020-08-23T22:13:49.83 0.3 undecidable manual P 65 52.9026 50 -0.14 68
IT.FOPC.HGN. 2020-08-23T22:13:48.74 0.6 undecidable manual S 49 22.3554 111 0.41 45
IV.ARRO.EHZ. 2020-08-23T22:13:47.00 0.3 undecidable manual P 142 36.2415 50 -0.4 66
IV.GAVE.EHZ. 2020-08-23T22:13:47.18 0.3 undecidable manual P 116 36.3414 50 -0.24 68
IV.ATCC.EHZ. 2020-08-23T22:13:47.82 0.1 undecidable manual P 17 40.2264 50 -0.2 91
IV.MGAB.HHZ. 2020-08-23T22:13:46.77 0.3 undecidable manual P 285 32.2455 105 0.05 71
IT.FOPC.HGN. 2020-08-23T22:13:45.07 0.3 undecidable manual P 49 22.3554 111 0.24 70
IV.ASSB.HHZ. 2020-08-23T22:13:45.47 0.1 positive manual P 30 26.2515 108 -0.12 95
IV.CESX.HHZ. 2020-08-23T22:13:45.81 0.3 undecidable manual P 164 26.5512 107 0.18 70
IT.GNU.HGE. 2020-08-23T22:13:43.74 0.6 undecidable manual S 122 7.1928 139 -0.14 49
IV.MOMA.HHZ. 2020-08-23T22:13:43.63 0.6 undecidable manual S 122 7.1928 139 -0.25 48
IV.MOMA.HHZ. 2020-08-23T22:13:42.30 0.1 negative manual P 122 7.1928 139 0.03 100
IT.GNU.HGE. 2020-08-23T22:13:42.29 0.1 undecidable manual P 122 7.1928 139 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:2.3 0.0035913585 0.2176 AML other m 2020-08-23T22:13:44.22
IV.MOMA.HNE. ML:2.2 0.0030815685 0.2688 AML other m 2020-08-23T22:13:44.48
IV.MOMA.HNN. ML:2.2 0.002739783 0.2048 AML other m 2020-08-23T22:13:45.36
IV.MOMA.HHN. ML:2.2 0.0030550205 0.2176 AML other m 2020-08-23T22:13:45.34
IV.MGAB.HNE. ML:1.4 0.00012634780000000002 1.4368 AML other m 2020-08-23T22:13:48.86
IV.ASSB.HHN. ML:1.3 0.00010358453000000001 1.7184 AML other m 2020-08-23T22:13:49.13
IV.ASSB.HHE. ML:1.3 0.000116528405 0.1792 AML other m 2020-08-23T22:13:50.28
IV.MGAB.HNN. ML:1.6 0.00018583735000000001 1.728 AML other m 2020-08-23T22:13:51.46
IV.NRCA.HNN. ML:1.7 0.00013490922500000003 1.3088 AML other m 2020-08-23T22:13:52.99
IV.CESX.HHN. ML:1.5 0.0001899457 0.4096 AML other m 2020-08-23T22:13:53.08
IV.GAVE.HNE. ML:1.6 0.00015669175 0.2176 AML other m 2020-08-23T22:13:53.99
IV.ARRO.EHE. ML:1.2 0.00006434655000000001 0.256 AML other m 2020-08-23T22:13:54.28
IV.CESX.HHE. ML:1.3 0.0001210792 0.4608 AML other m 2020-08-23T22:13:54.36
IV.ARRO.EHN. ML:1.3 0.00007678850500000001 0.2048 AML other m 2020-08-23T22:13:54.73
IV.MGAB.HHE. ML:1.3 0.00009564559 1.68 AML other m 2020-08-23T22:13:54.86
IV.CAFI.HNN. ML:1.8 0.00012045366 0.8736 AML other m 2020-08-23T22:13:54.97
IV.MGAB.HHN. ML:1.4 0.00012523215 0.2816 AML other m 2020-08-23T22:13:55.30
IV.CAFI.HNE. ML:1.9 0.00013030338 0.768 AML other m 2020-08-23T22:13:55.76
IV.GAVE.EHE. ML:1.5 0.00013380285 0.1792 AML other m 2020-08-23T22:13:56.19
IV.GAVE.EHN. ML:1.4 0.00010876655 0.2304 AML other m 2020-08-23T22:13:56.26
IV.ATCC.EHE. ML:1.3 0.000065540165 0.2944 AML other m 2020-08-23T22:13:56.74
IV.ATCC.EHN. ML:1.5 0.00009972875 1.5648 AML other m 2020-08-23T22:13:57.16
IV.FDMO.HHN. ML:1.1 0.000030303339999999998 0.1536 AML other m 2020-08-23T22:13:58.30
IV.MURB.HHE. ML:2.1 0.00039409165 0.2176 AML other m 2020-08-23T22:13:58.43
IV.NRCA.HHN. ML:1.6 0.000099126995 0.1408 AML other m 2020-08-23T22:13:58.27
IV.MURB.HHN. ML:1.9 0.00023095035000000001 0.1792 AML other m 2020-08-23T22:13:58.46
IV.MURB.HNE. ML:2.1 0.0003302109 0.2304 AML other m 2020-08-23T22:13:58.41
IV.MURB.HNN. ML:2.0 0.00027721230000000004 0.2048 AML other m 2020-08-23T22:13:58.45
IV.NRCA.HHE. ML:1.5 0.00007252927500000001 1.8592 AML other m 2020-08-23T22:13:58.05
IV.FDMO.HHE. ML:1.2 0.000036951665000000005 0.2688 AML other m 2020-08-23T22:13:59.51
IV.GAVE.HNN. ML:1.6 0.00016136909500000002 0.9472 AML other m 2020-08-23T22:14:01.52
IV.ATMI.HHN. ML:1.8 0.00013614215 1.6928 AML other m 2020-08-23T22:14:02.87
IV.ATMI.HHE. ML:1.8 0.00012701215 0.256 AML other m 2020-08-23T22:14:03.41
IV.CAFI.HHE. ML:1.1 0.000019694440000000002 0.3456 AML other m 2020-08-23T22:14:05.73
IV.EL6.EHE. ML:1.7 0.00007585 0.82 AML other m 2020-08-23T22:14:06.46
IV.NRCA.HNE. ML:1.6 0.00010676712 1.2448 AML other m 2020-08-23T22:14:09.12
IV.EL6.EHN. ML:1.5 0.0000453 0.76 AML other m 2020-08-23T22:14:12.93
IV.CAFI.HHN. ML:1.2 0.000022553490000000003 0.0416 AML other m 2020-08-23T22:14:22.16
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