Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 13-08-2020 and time 01:41:31 (UTC) in region 3 km SW Foligno (PG)

A magnitude ML 0.7 earthquake occured in region: 3 km SW Foligno (PG), on

  • 13-08-2020 01:41:31 (UTC)
  • 13-08-2020 03:41:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9440, 12.6780 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Foligno PG 3 57155 57155
Spello PG 6 8645 65800
Bevagna PG 6 5081 70881
Montefalco PG 6 5679 76560
Trevi PG 9 8469 85029
Cannara PG 10 4305 89334
Gualdo Cattaneo PG 11 6155 95489
Castel Ritaldi PG 13 3278 98767
Valtopina PG 14 1398 100165
Giano dell'Umbria PG 15 3846 104011
Assisi PG 15 28299 132310
Campello sul Clitunno PG 16 2442 134752
Bastia Umbra PG 17 21874 156626
Bettona PG 18 4367 160993

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km SW of Foligno (57155 inhabitants)
30 Km SE of Perugia (166134 inhabitants)
43 Km N of Terni (111501 inhabitants)
75 Km NE of Viterbo (67173 inhabitants)
87 Km SE of Arezzo (99543 inhabitants)
88 Km NW of L'Aquila (69753 inhabitants)
90 Km W of Teramo (54892 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
Reviewed
Rev100 		ML 0.7 2020-08-13
01:41:31		 42.9435 12.6777 10 2020-08-13
01:49:54		 Sala Sismica INGV-Roma 81926071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-13 01:41:31 ± 0.06
Latitude 42.9435 ± 0.0036
Longitude 12.6777 ± 0.0061
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81926071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 523
Semi-minor axis of confidence ellipse (meter) 340
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 300
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.03238
Epicentral distance of station farthest from the epicenter (degree) 0.36962
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 81926071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-13 01:49:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MML1.HNN. 2020-08-13T01:41:42.24 0.3 undecidable manual S 52 30.4473 50 -0.23 69
IV.SNTG.HNE. 2020-08-13T01:41:39.57 0.3 undecidable manual P 32 40.626 50 0.11 69
IV.ARRO.EHE. 2020-08-13T01:41:39.97 0.6 undecidable manual P 170 41.0256 50 0.44 43
IV.MURB.HHZ. 2020-08-13T01:41:39.11 0.3 undecidable manual P 341 37.5291 50 0.12 70
IV.CESI.HHZ. 2020-08-13T01:41:39.50 0.3 undecidable manual S 70 19.6692 117 0.23 70
IV.FDMO.HHZ. 2020-08-13T01:41:38.46 0.3 undecidable manual P 73 34.8429 50 -0.11 70
IV.MOMA.HHZ. 2020-08-13T01:41:38.49 0.3 undecidable manual S 209 17.7711 119 -0.21 71
IV.MML1.HNN. 2020-08-13T01:41:37.73 0.1 undecidable manual P 52 30.4473 50 -0.16 93
IV.ATCC.EHZ. 2020-08-13T01:41:37.29 0.3 undecidable manual P 354 26.9508 50 -0.07 72
IV.CESI.HHZ. 2020-08-13T01:41:36.10 0.3 undecidable manual P 70 19.6692 117 0.06 73
IV.ASSB.HHZ. 2020-08-13T01:41:36.83 0.1 undecidable manual S 352 11.0778 132 0.04 99
IV.MOMA.HHZ. 2020-08-13T01:41:35.79 0.3 undecidable manual P 209 17.7711 119 0.08 73
IT.FOPC.HGZ. 2020-08-13T01:41:35.07 0.1 undecidable manual S 35 3.5964 160 -0.22 96
IV.ASSB.HHZ. 2020-08-13T01:41:34.74 0.1 undecidable manual P 352 11.0778 132 0.12 97
IT.FOPC.HGZ. 2020-08-13T01:41:33.78 0.1 undecidable manual P 35 3.5964 160 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:0.7 0.00005685 1.84 AML other m 2020-08-13T01:41:37.99
IV.ASSB.HHE. ML:0.8 0.00006855 0.08 AML other m 2020-08-13T01:41:37.32
IV.MOMA.HHN. ML:0.8 0.000054449999999999995 0.32 AML other m 2020-08-13T01:41:38.72
IV.CESI.HHN. ML:0.5 0.0000226 1.54 AML other m 2020-08-13T01:41:39.00
IV.MOMA.HHE. ML:0.8 0.000056750000000000004 0.62 AML other m 2020-08-13T01:41:39.87
IV.CESI.HHE. ML:0.3 0.00001575 0.52 AML other m 2020-08-13T01:41:40.37
IV.ATCC.EHE. ML:0.7 0.000025450000000000002 1.28 AML other m 2020-08-13T01:41:43.95
IV.ATCC.EHN. ML:0.7 0.00002315 0.56 AML other m 2020-08-13T01:41:44.34
IV.MURB.HHE. ML:1.0 0.0000351 0.76 AML other m 2020-08-13T01:41:45.86
IV.MURB.HHN. ML:1.0 0.000041800000000000006 0.34 AML other m 2020-08-13T01:41:46.70
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