Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 13-10-2020 and time 19:06:29 (UTC) in region 2 km SE Spello (PG)

A magnitude ML 0.7 earthquake occured in region: 2 km SE Spello (PG), on

  • 13-10-2020 19:06:29 (UTC)
  • 13-10-2020 21:06:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9770, 12.6800 at 9 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
Spello PG 2 8645 8645
Foligno PG 3 57155 65800
Bevagna PG 7 5081 70881
Cannara PG 8 4305 75186
Montefalco PG 9 5679 80865
Valtopina PG 11 1398 82263
Assisi PG 12 28299 110562
Trevi PG 12 8469 119031
Gualdo Cattaneo PG 13 6155 125186
Bastia Umbra PG 15 21874 147060
Bettona PG 16 4367 151427
Castel Ritaldi PG 17 3278 154705
Nocera Umbra PG 18 5839 160544
Giano dell'Umbria PG 18 3846 164390
Campello sul Clitunno PG 19 2442 166832

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km NW of Foligno (57155 inhabitants)
28 Km SE of Perugia (166134 inhabitants)
46 Km N of Terni (111501 inhabitants)
78 Km NE of Viterbo (67173 inhabitants)
85 Km SE of Arezzo (99543 inhabitants)
91 Km W of Teramo (54892 inhabitants)
91 Km NW of L'Aquila (69753 inhabitants)
98 Km SW of Ancona (100861 inhabitants)
100 Km S of Fano (60888 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 0.7 2020-10-13
19:06:29		 42.9772 12.68 9 2021-02-26
14:56:01		 Bollettino Sismico Italiano INGV 84210121
Reviewed
Rev100 		ML 0.9 2020-10-13
19:06:29		 42.9793 12.6695 10 2020-10-13
19:13:07		 Sala Sismica INGV-Roma 83760781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-13 19:06:29 ± 0.04
Latitude 42.9772 ± 0.0018
Longitude 12.6800 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84210121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 265
Semi-minor axis of confidence ellipse (meter) 223
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 122
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.01889
Epicentral distance of station farthest from the epicenter (degree) 0.62773
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 84210121
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-28 12:09:46

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 83760781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-13 19:13:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATVA.EHE. 2020-10-13T19:06:45.01 0.3 undecidable manual S 316 46.2204 50 -0.04 70
IV.ATLO.EHE. 2020-10-13T19:06:44.29 0.6 undecidable manual S 330 43.5231 50 -0.03 47
IV.MURB.HHE. 2020-10-13T19:06:42.08 0.3 undecidable manual S 338 34.1436 50 0.27 68
IV.SNTG.HHE. 2020-10-13T19:06:42.64 0.3 undecidable manual S 34 37.3293 50 -0.03 71
IV.CAFI.HNN. 2020-10-13T19:06:41.99 0.6 undecidable manual P 304 69.6747 50 -0.23 43
IV.MML1.HNZ. 2020-10-13T19:06:39.80 0.3 undecidable manual S 57 28.0497 108 -0.25 69
IT.MTCL.HGZ. 2020-10-13T19:06:39.33 0.6 undecidable manual S 86 25.9518 109 -0.03 48
IV.ATLO.EHE. 2020-10-13T19:06:38.50 0.1 undecidable manual P 330 43.5231 50 0.32 88
IV.ATCC.EHZ. 2020-10-13T19:06:38.40 0.3 undecidable manual S 352 23.2545 111 -0.08 72
IV.ATVA.EHE. 2020-10-13T19:06:38.46 0.3 undecidable manual P 316 46.2204 50 -0.14 68
IV.MGAB.HHZ. 2020-10-13T19:06:38.61 0.3 undecidable manual P 261 46.62 50 -0.06 70
IV.SNTG.HHE. 2020-10-13T19:06:37.12 0.3 undecidable manual P 34 37.3293 50 -0.12 70
IV.CESX.HHE. 2020-10-13T19:06:37.88 0.3 undecidable manual P 191 41.625 50 -0.01 71
IV.MOMA.HHZ. 2020-10-13T19:06:37.63 0.3 undecidable manual S 205 21.1677 113 -0.18 71
IT.GNU.HGZ. 2020-10-13T19:06:37.74 0.6 undecidable manual S 205 21.1677 113 -0.07 48
IV.CESI.HHZ. 2020-10-13T19:06:37.31 0.3 undecidable manual S 80 18.4704 116 0.36 69
IV.GAVE.EHN. 2020-10-13T19:06:36.90 0.6 undecidable manual P 151 36.1416 50 -0.14 46
IV.MURB.HHE. 2020-10-13T19:06:36.96 0.3 undecidable manual P 338 34.1436 50 0.22 69
IV.MML1.HNZ. 2020-10-13T19:06:35.43 0.1 undecidable manual P 57 28.0497 108 -0.29 92
IT.MTCL.HGZ. 2020-10-13T19:06:35.48 0.6 undecidable manual P 86 25.9518 109 0.16 47
IV.MOMA.HHZ. 2020-10-13T19:06:34.38 0.1 undecidable manual P 205 21.1677 113 -0.04 97
IT.GNU.HGZ. 2020-10-13T19:06:34.57 0.1 undecidable manual P 205 21.1677 113 0.14 95
IV.ATCC.EHZ. 2020-10-13T19:06:34.62 0.1 undecidable manual P 352 23.2545 111 -0.2 94
IV.CESI.HHZ. 2020-10-13T19:06:33.92 0.1 undecidable manual P 80 18.4704 116 -0.01 99
IT.FOPC.HGZ. 2020-10-13T19:06:33.11 0.1 undecidable manual S 114 2.0979 167 0.07 100
IV.ASSB.HHZ. 2020-10-13T19:06:33.79 0.3 undecidable manual S 347 7.4814 141 -0.09 74
IV.ASSB.HHZ. 2020-10-13T19:06:32.30 0.1 undecidable manual P 347 7.4814 141 0.14 98
IT.FOPC.HGZ. 2020-10-13T19:06:31.84 0.1 undecidable manual P 114 2.0979 167 0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHN. ML:0.7 0.000034922535 0.3968 AML other m 2020-10-13T19:06:39.47
IV.ASSB.HHE. ML:1.2 0.00023241299999999997 0.128 AML other m 2020-10-13T19:06:34.07
IV.MOMA.HHE. ML:0.6 0.000039527649999999994 0.2176 AML other m 2020-10-13T19:06:38.30
IV.MOMA.HHN. ML:0.7 0.00004046318 0.1536 AML other m 2020-10-13T19:06:38.67
IV.ATCC.EHE. ML:0.8 0.000040868705000000004 0.128 AML other m 2020-10-13T19:06:38.90
IV.CESI.HHE. ML:0.4 0.000020027755000000002 1.3312 AML other m 2020-10-13T19:06:37.52
IV.CESI.HHN. ML:0.4 0.000018470500000000002 1.024 AML other m 2020-10-13T19:06:37.40
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