Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 30-09-2020 and time 22:58:10 (UTC) in region 3 km SE Montefalco (PG)

A magnitude ML 1.5 earthquake occured in region: 3 km SE Montefalco (PG), on

  • 30-09-2020 22:58:10 (UTC)
  • 01-10-2020 00:58:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8680, 12.6760 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
Montefalco PG 4 5679 5679
Castel Ritaldi PG 5 3278 8957
Trevi PG 6 8469 17426
Giano dell'Umbria PG 9 3846 21272
Bevagna PG 9 5081 26353
Campello sul Clitunno PG 10 2442 28795
Foligno PG 10 57155 85950
Gualdo Cattaneo PG 11 6155 92105
Spello PG 14 8645 100750
Spoleto PG 16 38218 138968
Cannara PG 16 4305 143273
Massa Martana PG 16 3770 147043
Vallo di Nera PG 19 364 147407
Collazzone PG 20 3473 150880
Sant'Anatolia di Narco PG 20 564 151444

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km S of Foligno (57155 inhabitants)
34 Km N of Terni (111501 inhabitants)
35 Km SE of Perugia (166134 inhabitants)
68 Km NE of Viterbo (67173 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
87 Km W of Teramo (54892 inhabitants)
93 Km SE of Arezzo (99543 inhabitants)
97 Km N of Guidonia Montecelio (88673 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 1.5 2020-09-30
22:58:10		 42.8685 12.6758 9 2021-02-26
14:56:12		 Bollettino Sismico Italiano INGV 85793961
Reviewed
Rev100 		ML 1.5 2020-09-30
22:58:10		 42.8693 12.6728 9 2020-09-30
23:06:11		 Sala Sismica INGV-Roma 83399531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-30 22:58:10 ± 0.05
Latitude 42.8685 ± 0.0027
Longitude 12.6758 ± 0.0049
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 85793961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 311
Semi-minor axis of confidence ellipse (meter) 288
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.10072
Epicentral distance of station farthest from the epicenter (degree) 0.69967
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 38
Type of magnitude ML
Reference to an origin 83399531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-30 23:06:11

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 38
Type of magnitude ML
Reference to an origin 85793961
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-28 13:37:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-09-30T22:58:30.75 0.6 undecidable manual S 34 61.6938 50 0.61 40
IV.SMA1.EHZ. 2020-09-30T22:58:30.96 0.6 undecidable manual S 116 59.8956 50 1.31 29
IV.MMO1.EHZ. 2020-09-30T22:58:28.05 0.6 undecidable manual S 86 53.0025 50 0.22 45
IV.CSP1.EHZ. 2020-09-30T22:58:27.11 0.6 undecidable manual S 60 49.617 50 0.2 46
IV.MURB.HHZ. 2020-09-30T22:58:26.20 0.6 undecidable manual S 344 45.4212 50 0.39 44
IV.MNTT.EHZ. 2020-09-30T22:58:25.24 0.3 undecidable manual P 74 77.6667 50 0.87 53
IV.MML1.EHN. 2020-09-30T22:58:23.09 0.6 undecidable manual S 41 36.2415 50 -0.26 46
IV.FDMO.HHZ. 2020-09-30T22:58:23.84 0.6 undecidable manual S 61 38.2284 50 -0.04 48
IV.NRCA.HHZ. 2020-09-30T22:58:23.07 0.6 undecidable manual S 96 35.8419 50 -0.18 47
IV.ARRO.EHZ. 2020-09-30T22:58:22.47 0.6 undecidable manual S 167 32.9448 50 0.01 49
IV.FEMA.HNE. 2020-09-30T22:58:22.11 0.6 undecidable manual S 71 32.1456 105 -0.09 48
IV.MF5.EHZ. 2020-09-30T22:58:22.76 0.3 undecidable manual P 78 64.9905 50 0.33 65
IV.ATCC.EHZ. 2020-09-30T22:58:22.93 0.6 undecidable manual S 355 35.2425 50 -0.16 47
IV.EL6.EHZ. 2020-09-30T22:58:21.83 0.3 undecidable manual P 34 61.6938 50 -0.08 69
IV.CESX.HHZ. 2020-09-30T22:58:21.34 0.6 undecidable manual S 194 29.748 106 -0.06 49
IV.SMA1.EHZ. 2020-09-30T22:58:21.74 0.3 undecidable manual P 116 59.8956 50 0.11 68
IV.ATVO.HHZ. 2020-09-30T22:58:21.67 0.3 undecidable manual P 339 60.9945 50 -0.13 68
IT.MTCL.HGZ. 2020-09-30T22:58:21.28 0.6 undecidable manual S 62 29.748 106 -0.12 48
IV.MMO1.EHZ. 2020-09-30T22:58:20.41 0.1 negative manual P 86 53.0025 50 -0.17 91
IV.GAVE.EHZ. 2020-09-30T22:58:20.35 0.6 undecidable manual S 138 26.4513 108 0.05 49
IV.MURB.HHZ. 2020-09-30T22:58:19.25 0.1 positive manual P 344 45.4212 50 -0.16 93
IV.MGAB.HNE. 2020-09-30T22:58:19.74 0.3 undecidable manual P 276 46.1205 50 0.24 68
IV.CESI.HHZ. 2020-09-30T22:58:19.55 0.6 undecidable manual S 51 23.9538 110 0.05 49
IV.CSP1.EHZ. 2020-09-30T22:58:19.94 0.3 undecidable manual P 60 49.617 50 -0.1 70
IV.ASSB.HHZ. 2020-09-30T22:58:18.15 0.6 undecidable manual S 356 19.3695 114 0.14 49
IV.FDMO.HHZ. 2020-09-30T22:58:18.06 0.1 undecidable manual P 61 38.2284 50 -0.24 93
IV.ATCC.EHZ. 2020-09-30T22:58:17.50 0.3 undecidable manual P 355 35.2425 50 -0.34 68
IV.NRCA.HHZ. 2020-09-30T22:58:17.64 0.1 negative manual P 96 35.8419 50 -0.29 92
IV.MML1.EHN. 2020-09-30T22:58:17.71 0.1 undecidable manual P 41 36.2415 50 -0.28 92
IV.ARRO.EHZ. 2020-09-30T22:58:17.36 0.3 undecidable manual P 167 32.9448 50 -0.12 72
IV.FEMA.HNE. 2020-09-30T22:58:17.22 0.3 undecidable manual P 71 32.1456 105 -0.1 72
IT.MTCL.HGZ. 2020-09-30T22:58:16.47 0.3 undecidable manual P 62 29.748 106 -0.4 68
IV.GAVE.EHZ. 2020-09-30T22:58:16.30 0.1 undecidable manual P 138 26.4513 108 0.07 98
IV.CESX.HHZ. 2020-09-30T22:58:16.52 0.1 undecidable manual P 194 29.748 106 -0.34 92
IV.CESI.HHZ. 2020-09-30T22:58:15.85 0.1 undecidable manual P 51 23.9538 110 0.09 98
IT.FOPC.HGZ. 2020-09-30T22:58:15.89 0.6 undecidable manual S 11 11.4774 127 0.26 48
IV.MOMA.HHZ. 2020-09-30T22:58:15.53 0.6 undecidable manual S 230 11.1777 127 -0.03 51
IT.GNU.HGZ. 2020-09-30T22:58:15.66 0.3 undecidable manual S 230 11.1777 127 0.1 75
IV.ASSB.HHZ. 2020-09-30T22:58:14.88 0.1 positive manual P 356 19.3695 114 -0.03 100
IV.MOMA.HHZ. 2020-09-30T22:58:13.58 0.1 positive manual P 230 11.1777 127 0.09 100
IT.GNU.HGZ. 2020-09-30T22:58:13.65 0.1 undecidable manual P 230 11.1777 127 0.16 99
IT.FOPC.HGZ. 2020-09-30T22:58:13.71 0.1 undecidable manual P 11 11.4774 127 0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HNE. ML:1.9 0.00096559255 0.2176 AML other m 2020-09-30T22:58:16.15
IV.MOMA.HHE. ML:1.9 0.0010097095499999999 0.2176 AML other m 2020-09-30T22:58:16.15
IV.MOMA.HHN. ML:1.8 0.0008513454 0.192 AML other m 2020-09-30T22:58:16.43
IV.ASSB.HHE. ML:1.4 0.000208604 0.1792 AML other m 2020-09-30T22:58:18.35
IV.ASSB.HHN. ML:1.4 0.00019469295 0.2048 AML other m 2020-09-30T22:58:18.68
IV.CESI.HNE. ML:1.4 0.0001427944 0.32 AML other m 2020-09-30T22:58:19.85
IV.CESI.HHE. ML:1.3 0.00012714904999999997 0.2304 AML other m 2020-09-30T22:58:20.06
IV.GAVE.HNE. ML:1.8 0.00038202215 0.3968 AML other m 2020-09-30T22:58:20.99
IV.GAVE.EHE. ML:1.9 0.00042223645 0.3968 AML other m 2020-09-30T22:58:20.99
IV.CESI.HHN. ML:1.6 0.00023656504999999999 0.4224 AML other m 2020-09-30T22:58:21.27
IV.CESX.HHN. ML:1.5 0.00015940235000000001 0.2176 AML other m 2020-09-30T22:58:22.57
IV.ARRO.EHE. ML:1.2 0.000075220475 0.2304 AML other m 2020-09-30T22:58:22.69
IV.CESX.HHE. ML:1.4 0.0001171047 0.3968 AML other m 2020-09-30T22:58:22.71
IV.GAVE.EHN. ML:1.7 0.00030685455 0.3584 AML other m 2020-09-30T22:58:22.85
IV.ATCC.EHE. ML:1.4 0.00010139858000000001 1.6928 AML other m 2020-09-30T22:58:24.10
IV.FDMO.HHN. ML:1.2 0.000063677185 0.2048 AML other m 2020-09-30T22:58:24.60
IV.ATCC.EHN. ML:1.4 0.00009438288 0.1792 AML other m 2020-09-30T22:58:24.88
IV.ARRO.EHN. ML:1.3 0.000089246545 0.192 AML other m 2020-09-30T22:58:25.05
IV.NRCA.HNE. ML:1.6 0.00013897239999999998 0.128 AML other m 2020-09-30T22:58:25.48
IV.FDMO.HHE. ML:1.2 0.000063257215 0.2304 AML other m 2020-09-30T22:58:25.65
IV.NRCA.HHN. ML:1.5 0.000125984 0.1152 AML other m 2020-09-30T22:58:25.73
IV.NRCA.HHE. ML:1.5 0.00013583645 0.1792 AML other m 2020-09-30T22:58:26.15
IV.MURB.HHN. ML:1.8 0.0001660374 1.7312 AML other m 2020-09-30T22:58:27.05
IV.MURB.HNE. ML:1.8 0.0001705276 0.2688 AML other m 2020-09-30T22:58:27.32
IV.MURB.HHE. ML:1.8 0.00019637625 0.2304 AML other m 2020-09-30T22:58:27.31
IV.MURB.HNN. ML:1.8 0.00016732325000000001 0.4352 AML other m 2020-09-30T22:58:27.40
IV.CSP1.EHE. ML:1.7 0.00013263688 0.1664 AML other m 2020-09-30T22:58:27.57
IV.CSP1.EHN. ML:1.8 0.00017495375000000003 0.384 AML other m 2020-09-30T22:58:29.56
IV.EL6.EHE. ML:1.7 0.00009501941 0.2048 AML other m 2020-09-30T22:58:32.19
IV.EL6.EHN. ML:1.6 0.0000791489315 0.2176 AML other m 2020-09-30T22:58:32.79
IV.MF5.EHE. ML:1.2 0.000032025985 0.2944 AML other m 2020-09-30T22:58:33.56
IV.MF5.EHN. ML:1.3 0.00003272153999999999 0.2048 AML other m 2020-09-30T22:58:33.64
IV.ATVO.HHE. ML:1.1 0.00002728122 0.4992 AML other m 2020-09-30T22:58:34.75
IV.ATVO.HHN. ML:1.1 0.00002439341 0.2688 AML other m 2020-09-30T22:58:34.55
IV.SMA1.EHN. ML:1.4 0.000054741255 0.2816 AML other m 2020-09-30T22:58:36.64
IV.SMA1.EHE. ML:1.5 0.000057889915 0.4736 AML other m 2020-09-30T22:58:38.70
IV.MNTT.EHE. ML:1.6 0.00005933505 0.3968 AML other m 2020-09-30T22:58:40.45
IV.MNTT.EHN. ML:1.6 0.000066837005 0.2688 AML other m 2020-09-30T22:58:41.82
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